The heap immersion bottom pad generally consists of three parts: foundation, underlayer and protective layer, as shown in Figure 1. The heap immersion underlayer is often based on local conditions, the nature of the heap leaching materials, etc., and can be used in a variety of structures, including single, double and triple layers. If some mud ore granulation heap leaching often does not require a protective layer, only a layer of underlay can be laid on a solid and flat foundation. Some heap leaching fields have a gravel layer on the foundation and then in the gravel layer. clay thickness of about 400 ~ 450mm plated bottom cushion; gravel layer acting as the bottom cushion leakage detection. In some heap immersion fields, a drainage layer is added on the protective layer. Figure 1 Composition of the heap immersion mat The function of the heap immersion mat is mainly to carry the pressure of the heap and collect all the leachate. The foundation should be selected to be stable in the stratum, without large cavities, fractures and cracks on the flat or sloped land that is not developed to ensure that the heap immersion bottom cushion can carry the pressure of the ore heap, and the pile collapses without causing the pile to collapse, the surface of the foundation Flatness is required to prevent the underlayer from being punctured from below; the foundation should have a slope of 3% to 5% in order to discharge the leachate in time. The flatness and compaction of the foundation is the first step of laying the heap immersion mat. Generally, the bulldozer is first pushed to a certain slope according to the requirements, and then repeatedly compacted by a road roller, or manually leveled and tamped. If there is hard rock on the surface, it should be blasted off, processed and filled, and compacted. The main role of the bottom cushion is a solution to prevent leachate leaking out of the heap leach off, resulting in the loss of metal and groundwater sources are contaminated. The protective layer is mainly used to protect the bottom cushion from the upper part from the damage of the ore, and prevent the fracturing and damage of the underlying layer caused by the movement of the construction equipment and the walking of the personnel. Therefore, the choice of the material of the protective layer and the determination of the thickness depend on the height of the heap, the size of the ore, the type of building equipment, and the nature of the underlying material. It is generally desirable that the protective layer material be smooth pebbles or coarse sand, and where possible, the protective layer may also use a bamboo mat. When the ore is finely sized, such as -10 mm, especially during granulation heap leaching, the protective layer may not be used. Exposed Fan Coil unit/Europe Fan Coil unit
Air flow: 340m3/h-2380m3/h, Cooling capacity: 1800W-12600W
Exposed fan coil unit as terminals of Central Air Conditioner. Equipped with main air cooled chiller or Water Cooled Chiller to cool or heat the target place. Mainly used for hotel, hospital, bank, apartment and amusement place.
6.Installation type. On the wall/standing on the floor
Exposed Fan Coil Exposed Fan Coil,Vertical Exposed Fan Coil,Ceiling Exposed Fan Coil,Horizontal Exposed Fan Coil Jinan Amrta Air Conditioning Co.,Ltd , https://www.amrtaac.com
1.Installation
With supporting legs
Without support legs
2.Air intake
Front air intake
Underside air intake
3.Coil type. 2 pipes 3 rows/4 pipes 3+1 rows/2 pipes 4 rows
4..Controller. 3-speed controller or LED controller.
Wire controller/Remote controller/Wire controller with remote controller
5.DC/EC motor(optional)
