(2) The topography of the site should be as suitable as possible for the process of the concentrator. The topographic conditions of the concentrator, in addition to meeting the site area requirements, it is best to make the ore slurry self-flow, followed by semi-self-flow, and finally for pressure delivery. Generally, the suitable terrain of the crushing plant is about 25 degrees, and the main building is about 15 degrees. If there is no such ideal terrain condition, even if the flat construction team needs to consider the drainage of the plant, the Kunming site should still have a natural slope of 4-5%. The semi-autogenous concentrator of the slurry requires a topographic slope between the two. (3) The principle of saving land should be implemented. Whether it is to build a factory on a hillside or in a flat land, under the premise of meeting the production needs, it is necessary to occupy as little land as possible, especially if it does not occupy or occupy the land. For tailings ponds, reclamation should be considered when conditions permit. (4) The volume of the tailings pond should be compatible with the service life of the concentrator. The valley or the status of the earthwork with a low concave shape should be selected to be the smallest and the largest in the reservoir. The location of the tailings pond should be as close as possible to the concentrator to save the cost of tailings transportation. When conditions permit, we must strive to achieve self-flow or semi-self-flow. It should also prevent the harm or pollution of tailings to the environment, rivers, agricultural fishery production and residential areas. (5) The water supply team's ore dressing plant has a large amount of water, and some operations also require water quality. Therefore, under the premise of ensuring that the water quality and water quantity meet the production and living needs, the site of the concentrator should be as close as possible to the water source, avoiding the large amount of water rising to the height, and special attention should be paid not to compete with agriculture. (6) Power supply conditions: The concentrator must have a reliable power supply and minimize the transmission line. Anyone who has the conditions to use the power grid arch power should use it as much as possible to avoid the increase in investment and operation and management costs. (7) Have appropriate transportation conditions. The original ore of the ore dressing factory, various consumables and finished concentrates should have convenient transportation conditions. Rail transport to facilitate the integration with the national trunk lines to reduce the special construction, road transport and to facilitate the convergence of national highways, water transport to facilitate sharing existing dock or select a suitable location needs a new marina. (8) The site should have good engineering geological conditions. The site should be avoided from being built on faults, landslides and flood levels. It should avoid the construction of cultural relics in bad areas such as cavities, silt, humus, pits and gullies. The demand for soil acceptance in the plant area is greater than 100kN/m2. The requirements for heavy construction sites such as crushing plant, main plant of mine dressing and mine bin are not less than 200kN/m2. It is not advisable to build a factory in the earthquake zone of Grade 9 or above or the collapsible loess zone of Grade III or above. The groundwater level at the site should not be too high to reduce the complexity of infrastructure and infrastructure costs. (9) Pay attention to environmental protection. The site of the ore dressing should be selected as far as possible in the downwind direction of the town or residential area to minimize the pollution of the environment by dust, smoke and other emissions. (10) The location of the living area of ​​the concentrator should be selected in accordance with the principles of favorable production, convenient living and full cooperation. Residential areas should not be too far from the factory area, and transportation links should be convenient. (11) For mines with a promising future, the concentrator should have room for expansion.
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Basic principles for the selection of mineral processing sites
(1) beneficiation plant site in general should be as close to the mine. However, processing of higher grade ore or mineral concentrate still more metal ore concentrator, when the user out of close proximity with the ore, or limited to, water, electricity, fuel supply and other reasons, the user can close or factory built in the user area, Consolidate the slag bin of the concentrator with the user's storage bin to save investment; for some precious metal concentrators, to avoid the loss of concentrate in bulk transportation, or the concentrate of some concentrators must be dry When the user has waste heat available for use, the concentrator can be brought close to the user, and even the selected concentrate slurry can be directly sent to the smelting plant for dehydration treatment; when the mine resource association needs to concentrate on building the concentrator At the time, it is advisable to choose a reasonable location between the mine and the user in order to obtain the lowest combined freight rates for both the original ore and the concentrate. When the mine is near the mine, the concentrator should avoid building on the ore body, the magnetic anomaly zone, the collapse limit and the blasting danger zone.