First, the basic situation of the design of the Ashele copper mine (1) Ore properties and design processes and indicators Ashele copper ore deposits copper metal and Zinc metal sulfide ore, the primary metal minerals include pyrite, chalcopyrite, sphalerite and tennantite, wherein the pyrite content of 66.5% relative minerals; yellow Copper ore accounts for 5.81% of the relative content of minerals; arsenic bismuth ore accounts for 0.63% of the relative content of minerals; sphalerite accounts for 1.76% of the relative content of minerals. Both copper minerals and zinc minerals are closely embedded with pyrite, and the inlay size is fine. Copper minerals are mostly aggregates, in which the chalcopyrite embedding is relatively simple, and there is basically no solid solution structure with sphalerite; the arsenic bismuth copper ore is most complicated, and is encapsulated in fine particles and replaced in chalcopyrite and pyrite. In the middle or the edge of the sphalerite; the sphalerite is formed in two stages, a part of the inlay is simple and floatable, and the other part is a fine intergranular complex embedding. The order of floatability of major metal minerals is: pyrite > chalcopyrite > sphalerite > arsenic bismuth copper ore. The nature of the ore indicates that the ore is very complex and difficult to select, and copper and zinc separation is difficult. The optional study carried out the beneficiation tests of three kinds of processes: copper-zinc mixed separation and separation, partial priority and sequential priority, among which the copper-zinc mixed separation and separation process has the best index, so it was designed and adopted as the current production process: at 85 Under the condition of %-74μm grinding fineness, the copper-zinc mixed flotation (hereinafter referred to as the mixed-sorting section), the three coarse selection, the two-sweep flotation, and the mixed coarse concentrate are re-grinded, and the fineness is 95%~ 43μm; then copper and zinc separation flotation (hereinafter referred to as copper selection system), one rough selection, three sweeps, three selected flotation foam products are the final copper concentrate; copper and zinc separated tailings for zinc and sulfur separation Flotation (hereinafter referred to as zinc-selecting system), a rough selection, two sweeps, and five selected flotation foam products are the final zinc concentrate. (2) The flotation reagent base of the Ashele copper mine 1, collector The collectors of the mixing section mainly include xanthate and PAC (or BK308); the collector of the copper-selecting system mainly has BK404; the collector of the zinc-selecting system is mainly xanthate. Among them, xanthate has strong ability to capture copper-zinc sulfide ore, but has poor selectivity for pyrite (hereinafter referred to as sulfur), or “sulphur-sulphide†when collecting copper or zinc; PAC or BK308 is a highly selective collector. Compared with xanthate, the ability to capture sulfur is weak, or the phenomenon of "sulphur extraction" when copper and zinc are collected is weak, but it is aimed at copper and zinc. The selectivity is not much different; BK404 is also a highly selective collector, mainly for the selectivity between copper and zinc, or "bronze" is stronger and "zinc" is weaker, but its overall capture The ability to receive is weaker than the first two drugs and has both foaming properties. 2, inhibitor The "sulphur-reducing" inhibitor of the mixing section is lime, which is added to the pumping tank of the second-stage grinding; the combined inhibitor of zinc-removing zinc (hereinafter referred to as zinc-pressing) of the copper-selecting system is mainly zinc sulfate + sodium sulfite, and is added in stages. Firstly add activated carbon and sodium sulfide to remove the drug in the regrind machine, then add zinc sulfate + sodium sulfite in a rough selection, three sweeps, and three selection operations of copper and zinc separation; the sulfur pressure inhibitor of the zinc selection system is lime. . Second, copper concentrate production status and mineral processing technology progress The concentrator was put into trial production in November 2004. Only 180 skilled workers and 80 technical school graduates were employed among the 180 employees. The staff were less skilled in the process, process and operation, and each of the five mineral processing technicians After a period of overcoming the difficulties of winter production in Xinjiang and unskilled employees, after a winter tempering, it has been able to produce stably as of April 2005: the treatment capacity is 97t/h, and the copper concentrate grade is generally 18.9%-20. %, copper metal recovery rate is stable at about 75%, copper concentrate contains 4% to 5.7% zinc, zinc metal recovery rate is 23% to 30%, and the design index is quite different. (1) Optimizing the control of mixed selection The ore dressing research report of the Beijing Research Institute of Mining and Metallurgy clearly states that the ore properties of the Ashele copper deposit are special. The orientation of pyrite in the flotation affects both the recovery index of copper and zinc and the separation of copper and zinc concentrates. Containing impurities and impurities, the control of the amount of lime is very sensitive to the ore dressing adjustment. Therefore, at the beginning of the commissioning, the degree of influence of the pH control of the mixed selection has been discussed and studied. It is observed that the rough selection of the copper selection system and the cleaning of the foam layer are abnormally too large and too thick and too sticky, and the copper is coarsely selected. The "bottleneck" effect is obvious. The copper-zinc separated tailings (hereinafter referred to as copper tails) always contain twice as much copper as the original ore and cannot be reduced. For this reason, it is suspected that the copper-zinc separation flotation time is not enough. In an expert discussion with the Beijing Research Institute of Mining and Metallurgy in April 2005, the ore dressing technicians found that the mixed yield controlled by the copper-zinc recovery rate to ensure mixed selection was too large, about 35% to 42%, and the design The requirement is 35% or less, thus increasing the load on the copper-zinc separation operation. So far, a new understanding of the specific control indicators of mixed elections has been made: 1. Strengthen the “sulphur reduction†condition of mixed selection and control the appropriate amount of lime (ie pH value); 2. Adjust the mixed-selection pharmacy system to achieve the goal of “low sulphur†and reduce the mixed yield. Increasing the proportion of PAC and other highly selective collectors, from 45% to 68% of the design, and PAC (or BK308) is mainly used in the mixed rough section, and the mixing sweeping section is stronger. Yellow medicine. After a series of adjustments to the pharmaceutical system, the yield of the mixed-mix operation is basically controlled at about 30%, but the recovery rate is lower than the design value. During the mine overhaul in November 2005, various control parameters such as the clearance of the impeller cover and the amount of aeration of the flotation machine were adjusted to make the flotation machine work under the best conditions, and the recovery rate of the mixed operation was further improved. improve. The mixed selection indicators after optimized mixing control are shown in the table below. Mixed selection indicator table /% The “sulphur-sulphur†pharmacy solution in the mixing section improves the copper recovery rate of the mixed-mixing by 4% to 6%, which is close to the design index. (2) Semi-priority process transformation The Ascher copper ore is complex in nature, the ore distribution of each type of ore in the ore body is extremely uneven, and the grade of ore varies greatly. Therefore, the ore property and grade change of the ore dressing plant are large, and the important conditions of the flotation operation process are more difficult to control. Big. After several on-site production processes, it was found that the copper-zinc mixed rough selection I (hereinafter referred to as mixed coarse I) had a copper-containing grade of 19.2% to 23% in the first two tanks, which was close to the copper concentrate grade. It is indicated that under the grinding fineness of 85%-74μm, some of the chalcopyrites which have been dissociated by the monomer have good floatability and fast floating speed, and are well enriched in the foam products of the first two tanks of the mixed coarse I. . At this time, some of the sphalerites with better floatability have a faster floating speed. They are also faster enriched in the foam products of the first two tanks mixed with coarse I, and the grade is between 4% and 6%, slightly higher than The zinc-containing grade in the final copper concentrate. The resulting "semi-preferential copper selection" process idea: let the first and second tank foam products of the mixed coarse I directly enter the copper-zinc separation and selection II (hereinafter referred to as copper essence II) operation, reducing the residence time of copper metal in the process, Improve the copper selection effect. The specific modification of the process is as follows: the foam tanks of the first, second and third tanks of the mixed coarse I are separated by baffles, and the first and second tanks of the mixed coarse I become semi-preferred copper flotation tanks (hereinafter referred to as Half-priority), the latter 3 slots are still used as the mixed coarse I flotation tank, and the semi-priority foam directly enters the second tank of the copper essence II, and the rest of the process is unchanged. The difference between the process before and after the process transformation is as follows: the first two tanks of the original mixed selection are used as the semi-priority operation, and the copper-zinc mixed selection after the semi-priority operation; the semi-priority foam and the mixed copper and zinc foam products are merged in the copper-precision II operation. After being sorted by copper fine III, it becomes the final copper concentrate. The copper concentrate indicator improved rapidly after the semi-priority process was activated. In view of the short-term process of semi-priority foam and the great influence on the quality of copper concentrate, the commissioning of semi-priority and different pharmaceutical systems was carried out. The commissioning was basically divided into three major stages: 1. In the first stage, the original mixed drug system was basically maintained. Considering that the yellow medicine has the characteristics of strong harvesting ability and weak selectivity, in order to ensure the copper concentrate grade and reduce the influence of the floating of pyrite on the quality of copper concentrate, the stirring tank before the mixed selection stops using the yellow medicine, only A better selective collector PAC is used to improve the quality of the semi-preferred foam, and the coarse selection of copper and zinc is used to increase the amount of xanthate used to improve the separation effect of copper and zinc. 2. In the second phase, the pharmaceutical conditions of the partial priority operation of the partial priority process are adopted. Due to the large loss of zinc in the copper concentrate produced in the first stage of commissioning, the technicians re-examined the “Acheler Copper Mine No. 1 Ore Dressing Test Report†of the Beijing Research Institute of Mining and Metallurgy, and considered that some of the priority processes were prioritized. The pharmaceutical conditions of the operation can be cut into the semi-priority process, and BK404 is selected as the semi-priority collector to enhance the selectivity difference between copper and zinc floating in the semi-priority foam and reduce the enrichment of zinc metal in the semi-priority foam. . The specific medication is: before the mixing, the "zinc-zinc" inhibitor zinc sulfate + sodium sulfite and the collector BK404 are added, and the third tank of the mixed coarse I is added to the PAC to maintain the total amount of the mixed medicine. Keep the total amount of mixed drugs. 3. The third stage, the improved semi-priority pharmaceutical system. The semi-priority process is essentially a floatable + copper-zinc mixed-separation flotation process such as copper and zinc. After the semi-priority operation, the slurry enters the copper-zinc mixing process. However, the second stage of commissioning was to add a large amount of zinc sulphate and sodium sulfite in the stirred tank before the selection. Theoretically, zinc sulphate and sodium sulfite are combined inhibitors of sphalerite, which are present in the pulp and inhibit zinc. The metal floats above the semi-priority operation, and also inhibits the zinc metal mixed up after the semi-priority, which has a negative effect on the zinc recovery of the copper-zinc mixed selection; the total amount of the inhibitor is larger, which increases the cost of the medicament. For this reason, the addition of zinc sulphate and sodium sulfite was changed to a semi-priority foam tank. Before the semi-priority, the “zinc-zinc†of the slurry was semi-prioritized and the foam “zinc-pressedâ€, forming an improved semi-priority pharmacy system: The copper and zinc collectors with selective harvesting difference BK404, semi-priority foam zinc suppression, and semi-priority copper selection "zinc pressure" do not affect the subsequent copper-zinc mixing effect. The overall comparison of copper selection results, the semi-priority process has the following advantages: 1. The semi-priority process is conducive to improving the recovery rate of copper metal. 2. The semi-priority process is conducive to improving the processing capacity and energy consumption of some equipment. Theoretically, the semi-priority operation makes a part of the copper metal slurry directly enter the copper essence II through the rough sweeping operation of the re-grinding machine and the separation of copper and zinc, which reduces the load of the re-grinding machine and the copper-selecting operation, and to a certain extent, saves Equipment energy consumption also increases the processing capacity of regrinders and copper flotation equipment . 3. Under appropriate ore conditions, the semi-priority process has potential. In the production practice, a flotation phenomenon usually occurs: the majority of the sphalerite is floated in the coarse selection II or even the mixed III. It shows that the characteristics of the two-stage formation of sphalerite in the ore are very obvious during the mixing process: except for a small amount of easily floating sphalerite which floats faster and is enriched in semi-priority operations, most of the flash Zinc ore still lags behind the flotation rate of chalcopyrite. If the content of easy-to-float zinc is less under the conditions of high-copper and low-zinc ore, the zinc content in the semi-priority foam will be reduced, and the semi-priority process will give full play to the advantages: both copper metal fast-receiving and early harvesting are achieved. The impact of zinc metal recycling is also small. At present, in order to further increase production capacity and efficiency, the mine is undergoing engineering transformation of a flotation column with a semi-priority process. (3) Optimizing the separation of copper and zinc After the mixed optimization control and semi-priority process transformation, the copper concentrate index is about 20% copper, the copper metal recovery rate is about 80%, the zinc content is 3% to 4%, and the zinc loss rate in the copper concentrate is 25%. 30%, copper tailings still contain copper above the original ore grade. Various indications indicate that copper and zinc separation is difficult. To this end, research on the mechanism of collection and inhibition of copper and zinc separation has been carried out in order to find the matching point between collector and inhibitor, and to improve the selection trend of copper and zinc floatability. . 1. Improvement of "Zinc Suppression" Conditions in Copper-Zinc Separation Section The inhibition mechanism and dosage of copper-zinc separation flotation were studied and added reasonably. There are two specific studies: (1) 30% to 40% of the total amount of the inhibitor is added to the regrinder. The theoretical basis is that the order of addition of the flotation agent is generally: first adding a modifier such as an inhibitor, an activator, etc., followed by a collector and a foaming agent. Therefore, the inhibitor dosing point can be mentioned from the copper-zinc separation agitation tank to the regrinder and the desorption agitation tank. The desorption agitation tank is the best point, but the height difference is not enough, and the dosing point of the selected inhibitor is re Mill; theoretical basis 2 is that the separation of the flotation inhibitor before adding sufficient amount in the flotation, can be completely inhibited, so the main amount of inhibitor should be added to the regrinder. After nearly one month of repeated debugging and verification, it is determined that the amount of inhibitor added to the regrinder is 30% of the total amount, the effect of "zinc pressing" is obvious, and the zinc loss rate in the copper concentrate is significantly reduced. (2) Adjust the “zinc-zinc†idea of ​​copper sweeping. In the sweeping part of copper-zinc separation, the order of the designed inhibitors is: copper sweep I> copper sweep II> copper sweep III, and the copper sweep III operation has no sodium sulfite dosing point, indicating that the copper sweep III operation is the most zinc-pressed The zinc compaction of the weak and copper sweep II operation is weaker than the copper sweep I operation, that is, the concept of “zinc pressure†at the time of design is: the “zinc pressure†effect along the slurry flow to the copper sweeping operation can be gradually reduced. In actual production, copper sweep II and III operations often have a relatively serious phenomenon of zinc floating. The data of several process inspections also show that the zinc content of copper-swept II and III operations is several times higher than that of copper. Whenever this happens, the zinc content in the copper concentrate will increase, either by increasing the amount of inhibitor or by adjusting the proportion of selective collector types, and these adjustments will increase the cost of the ore but have little effect. In repeated adjustments and discussions, it is gradually recognized that: to increase the amount of inhibitors for copper sweep II and III operations, first suppress zinc in copper sweep II and III operations, then they return to the slurry of copper sweep I, zinc The floating property is weak, and the addition of inhibitors in the copper sweep I operation can change the selectivity of the copper-zinc flotation of the copper sweeping slurry. In view of the fact that the slurry after the copper sweep III operation enters the zinc-selecting system, the inhibitor dosage is slightly It is lower than the copper sweep II operation; that is, the order of the amount of the inhibitor is: copper sweep II> copper sweep III> copper sweep I. The addition of the copper sulphide III sodium sulfite dosing point has been added, further enhancing the "zinc pressure" effect. With the change of the idea of ​​“sintering zinc†in copper sweeping, the selectivity between copper and zinc in copper-zinc separation operation has changed fundamentally: the zinc-containing grade in copper concentrate was once less than 1%, and the zinc-containing loss rate was 15 The copper-bearing grade of copper tailings drops to 1.2% to 2%; the copper content of copper tailings is higher than that of copper-zinc separation ore, generally 4% to 6%, and the zinc content of the ore is as high as 10% or more; copper The recovery rate of zinc separation has increased from about 85% to over 90%. 2. Less "zinc-zinc" conditions in the copper-zinc separation section tend to be reasonable In-depth study of the reasonable proportion of the use of collectors for copper and zinc separation flotation at each point. On July 15-19, 2005, there was an indicator that the copper recovery rate was higher than 80% for five consecutive days but the copper concentrate grade was lower than 18%. By carefully studying the five-day pharmaceutical system, the capture of copper and zinc was captured. The proportional relationship between the dosages of the collectors: the amount of collectors for copper rough selection accounts for 51% to 54% of the total amount, the copper sweep I accounts for 18% to 24%, and the copper sweep II accounts for 16%. 19%, copper sweep III accounted for 8% to 12%. On August 1st, the amount of collector used for rough copper selection was 50% of the total amount, and the copper recovery rate was higher than 80% for 11 consecutive days. The reason for the analysis was that the recovery ratio of copper and zinc was higher than 8%. Then, on August 21st to 25th, the proportion of each point of copper-zinc separation collector is strictly according to copper rough selection: copper sweep I: copper sweep II: copper sweep III=52:19:19:9.5 addition, copper zinc The separation recovery rate is higher than the previous 10%, and the copper recovery rate is higher than 85% for 8 consecutive days. When the mine was overhauled in November 2005, the amount of copper-zinc separation collector was basically as follows: copper rough selection: copper sweep I: copper sweep II: copper sweep III=52:19:19:9.5 ratio The copper index for the second half of the month has risen steadily. When there is fluctuation, the adjustment method is: when the copper tailings have a high copper grade, the ratio of copper sweep II is increased to 20% to 24%; when the copper concentrate grade is high, the proportion of copper rough selection is adjusted. Up to 52% to 54%; when the zinc concentrate is high, adjust the ratio between BK404 and xanthate of single-point collector, generally BK404: xanthate is about: copper rough selection (2~3) 1, copper sweep II (2 ~ 3): 1, copper sweep III 2: 1; when the copper concentrate is too high zinc, the proportion of xanthate is smaller or trace. With the gradual accumulation of experience, the adjustment of the proportion of collectors at each point can be targeted and reasonable. The "zinc-zinc" and "zinc-zinc" pharmacy solutions for copper-zinc separation and flotation reduce the zinc-containing grade of copper concentrate and increase the recovery rate of copper-zinc separation operation by 3% to 4%. The successful application of the theory of inhibition and capture in the separation process of copper and zinc separation has completely changed the selection trend of the floatability of copper and zinc, and improved the separation efficiency of copper and zinc separation operations. 3. Production status of zinc concentrate and progress in mineral processing technology The zinc-sulfur separation flotation section is the last section of the three major flotation sections of the Ashele copper ore dressing plant. It is subject to the residual mineral content, residual chemicals, and mineral acidity of the mixed-segment and copper-selecting systems. Therefore, the zinc-selecting system is passive. State, the first two flotation sections are required to provide suitable basic conditions for it: 1. Mixed-segment section, fully floating zinc and strong sulfur-spraying, minimizing the impurity load of zinc-sulfur separation; 2. Selecting copper system, selecting copper tailings Copper, and rushing a sufficient amount of zinc to the copper tailings to provide a better mineral composition for the zinc-sulfur separation section; 3. The residual agent of the copper-selective system needs to be eliminated or controlled in the zinc-selecting system. Within the scope; 4, the pH value of the copper tailings slurry of the copper selection system needs to meet the action conditions of the activator and inhibitor of the zinc-sulfur separation section. (1) Increasing the return amount of zinc in the selected mines and solving the "sulfur entrainment" phenomenon of the zinc-selected operation foam. When the two techniques of mixed-mixing and copper-zinc separation have not reached a certain level, the zinc concentrate grade is generally 30. % or less; pyrite "entrainment" (hereinafter referred to as "sulfur entrainment") is a serious phenomenon in the flotation foam of zinc-sulfur separation; the foam often exhibits an abnormal "cooked porridge" phenomenon; when the copper tailings have a high copper grade The foam color of the zinc-sulfur separation flotation section is yellow, the zinc concentrate grade drops below 20%, and the copper content in the zinc concentrate is as high as 10% or higher; in order to maintain the zinc concentrate grade, the zinc-sulfur separation operation of sulfuric acid Flotation agents such as copper and xanthine are often forced to stop. To this end, there are five specific measures for zinc selection: 1. It is required to minimize the amount of "sulphur" in the mixed-sorting section: the selective-selection agent PAC (or BK308) is used in a mixed-mixing section to properly coordinate with the xanthate to minimize the zinc selection. The content of sulfur in the system slurry; 2. The pH control of the enhanced mixing: control the pH value of the copper-zinc separation section to be below 9 to ensure that the zinc-sulfur separation section has sufficient pulping opportunities; 3. Eliminate the separation of copper and zinc. Residual agent in the section: adding activated carbon to the copper tailings to remove part of the pyrite in the copper-zinc separation flotation section to reduce the possibility of floating pyrite; 4, increase zinc selection The amount of mine return in the operation: it is required to increase the amount of foam washing water selected by zinc in the operation, and the coarse sand hole of the flotation machine that keeps the zinc selection operation fully open; 5. Renovation of zinc selection II, III, IV, V float Machine selection: Open a large size medium mine return hole at the lowest position of the flotation machine below the liquid level control gate. After the measures were taken, the debugging was improved. The zinc concentrates began to simmer around 45% from September to October, but the operation mode was abnormal: all the flotation machines selected for zinc stopped the foam scraper; the flotation foam rinse water was too large. The amount of new water and return water that caused the grinding system was out of balance. The zinc recovery rate has not been raised, and it can only barely maintain an indicator of zinc concentrate grade. (two) increase the amount of activator After the copper-zinc separation has reached a certain level: the loss rate of zinc in copper concentrate is less than 20%; the copper content in copper tailings is reduced to 1.2% to 2%; the zinc content in copper tail is above 4% to 6%. The zinc is selected to have the selected mineral conditions. A comparison test of the order of addition of copper sulfate and lime at the end of December 2005 showed that the zinc-selecting effect was significantly better when the amount of copper sulfate exceeded twice the designed amount. On-site production immediately adopted this test result, greatly increasing the amount of copper sulfate in the zinc-selecting system. The on-site zinc rough selection and zinc flotation of the selected foam were very obvious, and the zinc-selected foam also showed zinc floating. . The zinc concentrate grade was 45% in the month and the zinc recovery rate was 38%. (3) Adjusting the order of activation and inhibition, copper sulfate is added before lime The basic idea of ​​designing zinc-sulfur separation is to first adjust the pH value of the selected slurry with lime, inhibit pyrite under high calcium conditions, and then add copper sulfate to activate the sphalerite which has been inhibited during the copper-zinc separation process; Add the xanthate and BK201 to float the sphalerite. The program has a theoretical disadvantage: copper sulfate has a higher activation ability for pyrite than sphalerite. When copper sulfate activates sphalerite, a large amount of pyrite in the slurry is also activated, thus causing zinc concentrate. The selection of foam "sulfur entrainment" is serious, affecting the effect of zinc selection. The activation mechanism of copper sulfate is: copper sulfate is an acidic salt, completely ionized in water, so that the solution is weakly acidic, and the effective Cu 2 + concentration in the solution is related to the pH value of the slurry. In order to prevent hydrolysis of Cu 2 + and improve activation efficiency, It is preferred to use copper sulfate in an acidic or neutral slurry. The design of copper sulfate is the use of copper sulfate under alkaline conditions having a pH greater than 11. At this time, a portion of the copper ions into basic copper carbonate or basic copper sulfate, reducing the effective Cu 2 + concentration, activation resulting in reduced performance. In January 2006, after the completion of copper sulfate, the lime addition scheme and the copper sulfate prior to the lime addition scheme were compared, that is, the experiment of using lime to adjust the pyrite to add the copper sulfate to activate the sphalerite, and the first use of sulfuric acid The copper-activated sphalerite was tested by adding lime to inhibit pyrite. The test index of copper sulphate prior to the lime addition scheme is much higher than the lime addition scheme after the copper sulphate: the zinc grade of zinc concentrate is 10.5% higher, the recovery rate is 18.48% higher; the copper sulphate is added to the zinc before the lime addition test. Crude concentrate foam, pyrite "entrainment" phenomenon is significantly reduced. The comparison test results show that with the increase of pulp pH, the effective activation component of copper sulfate in the pulp decreases, and the activation ability of sphalerite is weakened. The process modification of copper sulfate addition point before advance to lime was completed on February 24, 2006. The cumulative zinc concentrate index in March: 43% zinc grade, 43% zinc metal recovery rate, and greatly improved zinc selection index. Fourth, the conclusion 1. The processing capacity of mineral processing is steadily increasing. From the initial 1800t / d to 3500 ~ 3800t / d, the production of qualified copper concentrate and zinc concentrate, copper concentrate containing 20% ​​copper, zinc containing less than 3%, zinc concentrate containing zinc 42%, containing copper Less than 3%. 2, copper selection technology through optimization of mixed selection control, semi-priority process transformation and optimization of copper and zinc separation of the three major steps, the index has been greatly improved, the zinc loss rate in copper concentrates dropped to about 22%; copper metal recovery rate from the initial The 75% increase to about 85%, the copper recovery rate is increased by 10%, and the mine economic benefits are significant. 3. Zinc selection technology has greatly improved the index by increasing the return of zinc in the middle of the mine, increasing the amount of activator and adjusting the order of activation and inhibition. Under the premise of ensuring the quality of zinc concentrate, zinc The metal recovery rate has gradually increased to about 43%, improving the comprehensive benefits of the mine. references [1] Beijing Nonferrous Metallurgy Design and Research Institute, Urumqi Nonferrous Metallurgy Design and Research Institute. Xinjiang Ascher Copper Mine preliminary design (3000t/d) [R] .2001. [2] Beijing Research Institute of Mining and Metallurgy. Research on ore process mineralogy of No. I ore body in Ashele Copper Mine, Xinjiang [R]. 1996. [3] Beijing Research Institute of Mining and Metallurgy. Report on the expansion and re-election of mixed samples of No. I ore body in Ashele Copper Mine, Xinjiang [R]. 1996. [4] Beijing Research Institute of Mining and Metallurgy. Ore ore dressing test report of No.1 ore body in Ashele Copper Mine, Xinjiang [R].1996. Author unit: Xinjiang Ashele Copper Industry Co., Ltd. (Wan Ling) Sichuan Xinyuan Mining Co., Ltd. (Hua Jincang) Leisuwash specializing in manufacture Automatic Car Wash Machine, Touchless Car Wash , automatic touchless car wash, Touchless Car Wash Equipment, robot car wash, smart car wash system, Leisuwash 360 , Leisuwash Leibao 360, laserwash 360, leisuwash Touchless Car Wash Machine, Leisu Wash touchless car wash automatic, leisu wash 360 high pressure touchless car wash equipment, robo car wash, touch free car wash, leisuwash 360 touch free car wash, leisuwash 360 price, automatic car wash price, leisuwash in malaysia, no touch automatic Car Wash Machine .
Leisuwash 360 touchless car wash machine high intelligent high quality, with car wash + car care + drying process totally, each car wash takes time 1 minute to 5 minutes which depends on the car wash mode.
The contactless robotic automatic robot leisuwash 360 is the newest technology of contactless high-speed automatic washing of cars. Fully automated process of contour washing and drying of the car in combination with the technological capabilities of self-service (payment, choice of car wash programs) provide high-quality contactless washing services in the absence of staff.
Leisuwash 360 Plus Machine Car Wash,Leisuwash 360 Plus,Automatic Express Car Wash,Touchless Car Wash Hangzhou Leisu Cleaning Equipment Co.,Ltd , https://www.leisuwashtouchless.com