Method for floatation and recovery of lead zinc mixed concentrate from gold mine cyaniding slag tails
A technology of cyanidation tailings and mixed concentrate, applied in flotation, process efficiency improvement, solid separation and other directions, can solve the problems of high cyanide concentration, excess flotation reagents, affecting the recovery rate of lead and zinc, etc. High zinc recovery rate and good flotation effect
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[0030] (1) Pretreatment of gold ore cyanidation tailings:
[0031] Add water to the cyanide tailings, stir to form a slurry, add activated carbon and Y0 agent to the slurry,
[0032] The pretreatment process conditions are:
[0033] Pulp concentration: 35%
[0034] Activated carbon dosage: 1.3Kg / T
[0035] Y0 agent dosage: 0.2Kg / T, Y0 agent component is 1 part of FeSO 4 + 3 parts ammonium persulfate, its composition is weight ratio
[0036] Stirring time: 30 minutes
[0037] (2) Asynchronous mixed selection:
[0038] Pump the pretreated ore slurry to the flotation unit I for the first step of roughing, add Y0 agent, lime, butyl xanthate, and float the galena; send the tailings slurry after the first step of roughing to Go to flotation unit II, then enter the second step of roughing, add Y0 agent, lime, copper sulfate, butyl xanthate, and flotation sphalerite.
[0039] The process conditions of asynchronous mixed selection are:
[0040] The first rough selection: PH val...
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