Method for comprehensively extracting valuable metals from tellurium-containing polymetallic materials
A technology for comprehensive extraction of valuable metals, which is applied in the field of hydrometallurgical process and comprehensive extraction of valuable metals, can solve the problems of difficult-to-handle grades, low tellurium-containing materials, and high production costs, and achieve reduced production costs and high tellurium recovery rates , The effect of saving technology
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[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0026] The composition of the tellurium-containing smelting slag used in this embodiment is as follows:
[0027] Pb22.27%, Cu12.06%, Te5.74%, Bi27.1%, Ag3.2024%;
[0028] The technological steps of extracting refined tellurium from the above-mentioned tellurium-containing smelting slag and comprehensively recovering valuable metals are shown in the appendix figure 1 .
[0029] The specific process and process parameters are as follows:
[0030] a. Oxidation leaching
[0031] Large pieces of tellurium-containing polymetallic materials are crushed by a crusher to a particle size of less than 3cm; then ground by a wet ball mill, and the particle size is required to be below 150 mesh; nitric acid is used as an oxidant and leaching agent to leach lead, copper, bismuth, silver, and tellurium. Let all the valuable metals enter the soluti...
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