The purpose of laying a heap immersion mat is to ensure the stability of the heap and to prevent leakage of the leachate. The quality of the heap immersion mat is one of the key factors for the success of heap leaching. Foreign countries attach great importance to this aspect, and there are many studies, such as "GEOTECHNICAL ASPECTS OF HEAP LEACH DESIGN" (geotechnology in heap leaching design).
The basic requirements for heap immersion mats are:
First, there is enough pressure resistance to withstand the vertical gravity applied by the heap and the pressure from the construction equipment.
Second, there is a certain slope, which can discharge the leachate in the heap in time.
Third, low permeability, generally requires a permeability coefficient of less than 1 × 10 -7 cm / s.
4. It does not react chemically with the leachate, nor does it physically or chemically adsorb the ions that are leached.
5. It has a long service life and can withstand changes in natural conditions (temperature, atmosphere). Cracks do not occur due to changes in natural conditions during at least one heap immersion cycle.
6. No harmful effects on human health.
Seven, easy to construct on site, construction methods are simple and easy to master.
Eight, the cost is low, the source of materials is widely available.
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Shandong Kingoro Machinery Co., Ltd , https://www.kingoromachinery.com