Multi-grade gold-solver-copper-zinc enriching and comprehensive recovering method for cyanide gold refining waste residues
A technology of gold, silver and waste residue, which is applied in the field of recycling and utilization of cyanide gold extraction waste residue, can solve the problems of inoperability, complicated process, high energy consumption, etc., and achieve the elimination of pollution hazards, large economic benefits, and prolong the comprehensive utilization of resources chain effect
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Embodiment 1
[0027] A method for multi-stage enrichment of gold, silver, copper, and zinc in cyanidation gold extraction waste residue and comprehensive recovery, comprising the following steps:
[0028] 1) Mixed decyanation technology:
[0029] Mix the cyanidation gold extraction waste slag with the high-temperature hot slag produced by roasting acid production at a mass ratio of 10:1, and use warm dilute sulfuric acid produced by the purification section of the roasting acid production process for slurry adjustment, and control the pulp concentration to 10wt %, control the pH=4.5, control the temperature of the whole process to be 70°C, stir for 60 minutes, then place the pulp in the concentrator to concentrate, the overflow returns to the roasting acid purification section for recycling, the concentration of the bottom flow pulp is 30wt%, and directly enters the floating selection process;
[0030] 2) Sulfur concentrate technology for enriching gold and silver by flotation:
[0031] A...
Embodiment 2
[0043] A method for multi-stage enrichment of gold, silver, copper, and zinc in cyanidation gold extraction waste residue and comprehensive recovery, comprising the following steps:
[0044] 1) Mixed decyanation technology:
[0045] Mix the cyanidation gold extraction waste slag with the high-temperature hot slag produced by roasting acid production at a mass ratio of 15:1, and use warm dilute sulfuric acid produced in the purification section of the roasting acid production process to adjust the slurry, and control the pulp concentration to 20wt% , control the pH=5.5, control the temperature of the whole process to be 75°C, stir for 150 minutes, then place the pulp in the concentrator to concentrate, the overflow returns to the roasting acid purification section for recycling, the concentration of the bottom flow pulp is 40wt%, and directly enters the floating selection process;
[0046] 2) Sulfur concentrate technology for flotation enrichment of gold and silver:
[0047] ...
Embodiment 3
[0059] A method for multi-stage enrichment of gold, silver, copper, and zinc in cyanidation gold extraction waste residue and comprehensive recovery, comprising the following steps:
[0060] 1) Mixed decyanation technology:
[0061] Mix the cyanidation gold extraction waste residue with the high-temperature hot slag produced by roasting acid production at a ratio of 20:1, and use the warm dilute sulfuric acid produced in the purification section of the roasting acid production process to adjust the slurry, and control the pulp concentration to 29wt%. pH=6.5, the temperature of the whole process is 80°C, stirring for 240 minutes, and then the pulp is concentrated in the concentrator, and the overflow is returned to the roasting acid purification section for recycling. The concentration of the bottom flow pulp is 50wt%, and it directly enters the flotation process;
[0062] 2) Flotation enrichment gold and silver sulfur concentrate technology:
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