Acid dump leaching technology of atacamite

Abstract

The invention provides an acid dump leaching technology of atacamite. The acid dump leaching technology comprises the following steps of: crushing atacamite ores in two sections; screening; directly conveying oversize products to a stock dump to carry out the acid dump leaching; conveying a screen underflow into a thickener; adding an adhesion agent to the underflow in the thickener to mix the size; transferring the underflow into a granulator to mix with an acid-proof gravel carrier to granulate, so as to obtain mineral particles with a layer of atacamites covered on the surface; conveying the obtained mineral particles to the stock dump to carry out the acid dump leaching, wherein the concentration variation condition of the acid and copper in leaching liquor is monitored on real time during leaching, and the acidity as well as the spray intensity of the spray liquid are adjusted based on the monitoring data; treating copper-rich leaching liquor which is circularly sprayed at a plurality of times in the stock dump by the processes of extracting, reverse extracting and electrodeposition, so as to obtain a cathode copper product; treating extraction raffinate by degreasing or purifying process; and then returning to the dump leaching process. The acid dump leaching technology of the atacamite, provided by the invention, is a technology for treating clay-containing minerals and easily-slimed atacamite ores in the Gobi Desert Region; and atacamite resources which are difficulty utilized in the past can be fully utilized by the acid dump leaching technology.

Description

technical field [0001] The invention relates to a new process for heap leaching of copper chloride ore by acid method, in particular to a new technology for leaching and extracting copper from copper chloride ore with a relatively high degree of oxidation in the Gobi desert area. Background technique [0002] Chloratackite is a rare mineral that is associated with malachite, azurite and quartz as a secondary mineral in the oxidation zone of copper deposits in arid regions. Oxidized chlorotacamite has large mud content, strong solubility, and has common characteristics such as flotation. [0003] The main methods to deal with chlortacamite ore are flotation and leaching. For the highly oxidized and low-grade copper chloride ores in the Gobi Desert, the recovery rate of the traditional flotation method is low, and it is difficult to solve the problem of fine ore or slime interference, and the relative water consumption of the mineral processing is relatively large, and the ec...

AI Technical Summary

Problems solved by technology

For the highly oxidized and low-grade copper chloride ores in the Gobi Desert, the recovery rate of the traditional flotation method is low, and it is difficult to solve the problem of fine ore or slime interference, and the relative water consumption of the mineral processing is relatively large, and the economic benefits in the dry and less rainy areas of the Gobi Desert Low; the stirring leaching method has the advantages of short leaching cycle and high copper leaching rate, but has defects such as high production cost and difficult solid-liquid separation

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