Bulk concentrate flotation separation method based on reinforcement of lead sulfide inhibition
A technology of mixing concentrates and separation methods, applied in flotation, solid separation, etc., can solve the problem of failure to completely realize the effective separation of copper, lead or lead and zinc, difficulty in changing the surface floatability difference of copper and lead minerals, and the surface of lead sulfide Weak inhibitory effect and other problems, to achieve the effect of low cost, strong pertinence, and thorough effect
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[0026] Example 1: Such as figure 1 As shown, a method for flotation and separation of a mixed concentrate based on enhanced inhibition of lead sulfide. The mixed concentrate is a fine-grained copper-lead sulfide mixed concentrate. In this mixed concentrate, the particle size of less than 400 mesh by mass accounts for 95%, of which Containing 13.92wt% Cu, 15.35wt% Pb, the main copper mineral is copper sulfide (40.03wt%), the main lead mineral is lead sulfide (17.16wt%), and the remaining gangue minerals are small, with quartz, calcite and kaolinite Mainly, the specific steps are as follows:
[0027] (1) Wet pretreatment of mixed concentrate: The copper-lead sulfide mixed concentrate is placed in a stirring tank, and 20% sulfuric acid solution and manganese dioxide are added to the copper-lead sulfide mixed concentrate to adjust to The slurry concentration is 30%, where the mass ratio of the added manganese dioxide to the mixed concentrate is 1:100g, the slurry is heated to 80°C, ...
Example Embodiment
[0032] Example 2: A method for flotation and separation of mixed concentrate based on enhanced inhibition of lead sulfide. The mixed concentrate is a fine-grained copper-lead sulfide mixed concentrate. In this mixed concentrate, the particle size of less than 400 mesh by mass accounts for 90%. It contains 14.56wt% Cu and 16.37wt% Pb. The main copper mineral is copper sulfide (41.70wt%), the lead mineral is lead sulfide (18.05wt%), and the remaining gangue minerals are a small amount of quartz, kaolinite and serpentine. Mainly. Specific steps are as follows:
[0033] (1) Wet pretreatment of mixed concentrate: place the copper-lead sulfide mixed concentrate in a stirring tank, and add 25% sulfuric acid solution and ammonium persulfate to the copper-lead sulfide mixed concentrate to adjust Until the slurry concentration is 35%, the mass ratio of the added ammonium persulfate to the mixed concentrate is 2g:100g, the slurry is heated to 85°C, the stirring speed is 400r / min, and the s...
Example Embodiment
[0039] Example 3: A method for flotation and separation of mixed concentrate based on enhanced inhibition of lead sulfide. The mixed concentrate is a fine-grained copper-lead-zinc sulfide mixed concentrate. In this mixed concentrate, the particle size of less than 400 meshes by mass accounts for 85% , Which contains 16.24wt% Cu, 25.71wt% Pb, and 7.51wt% Zn. The main copper mineral is copper sulfide (45.94wt%), the lead mineral is lead sulfide (29.02 wt%), and the main zinc mineral is zinc sulfide (11.05). wt%) The remaining gangue minerals are mainly a small amount of quartz and carbonate. Specific steps are as follows:
[0040] (1) Wet pretreatment of the mixed concentrate: The copper-lead-zinc sulfide mixed concentrate is placed in a stirring tank, and a sulfuric acid solution with a mass concentration of 30% is added to the copper-lead-zinc sulfide mixed concentrate to adjust to a slurry The concentration is 35%, the slurry is heated to 95℃, the stirring speed is 500r / min, an...
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