Low-alkali separation method for high-sulfur copper-zinc ore
A separation method and technology for copper-zinc ore, applied in the direction of solid separation, flotation, etc., can solve the problems of poor quality of concentrate products, increased production costs, running grooves, etc.
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Embodiment 1
[0029] figure 1 Be the method flowchart of the present embodiment, wherein have: 1-calcium oxide dry powder; 2-sodium metabisulfite dry powder; 3-copper efficient collector.
[0030] A kind of low-alkali separation method of high-sulfur copper-zinc ore provided by the present embodiment, such as figure 1 shown, including the following steps:
[0031] S1. Raw ore grinding: Put the raw ore and water into the mill for grinding at a mass ratio of 5:3, add calcium oxide dry powder in the mill, adjust the pH value of the pulp to 7.5-8; grind to the final product Parts with a fineness of -75μm account for 80-85% of the total mass;
[0032] S2. Copper roughing: put the grinding product obtained in step S1 into the flotation machine, add calcium oxide dry powder in the flotation machine, adjust the pH value of the pulp to 9-9.5, and stir for 3 minutes; then add zinc inhibitor solids in sequence Sodium pyrosulfite powder and high-efficiency copper collector are stirred for 3 minutes ...
Embodiment 2
[0038]Mineral raw materials: The raw ore of a foreign high-sulfur copper-zinc polymetallic mine is taken. The ore contains 1.55% Cu, 4.70% Zn, 1.02g / t Au, 42.34g / t Ag, and 45.67% S by mass percentage. The main useful minerals of raw ore are chalcopyrite and sphalerite, other sulfides are mainly pyrite, and the content of pyrite is as high as 85.01%. The original production process mainly has problems such as poor copper-zinc separation effect and poor pyrite inhibition effect. Adopt the process described in embodiment 1 to process this ore, concrete steps comprise:
[0039] S1. Raw ore grinding: Put the raw ore and water into the mill for grinding according to the mass ratio of 5:3, add calcium oxide dry powder in the mill, and the dosage is 1000g / t per ton of raw ore, and adjust the pulp The pH value is up to 8; after grinding, the part of the grinding product with a fineness of -75μm accounts for 80% of the total mass;
[0040] S2. Copper roughing: put the grinding product ...
Embodiment 3
[0048] The raw ore used in this example differs from the raw ore in Example 2 in that it contains 1.28% Cu, 3.99% Zn, 0.5g / t Au, 43.13g / t Ag, and 42.53% S by mass percentage.
[0049] Adopt the process described in embodiment 1 to process this ore, concrete steps comprise:
[0050] S1. Raw ore grinding: put the raw ore and water into the mill for grinding at a mass ratio of 5:3, add calcium oxide dry powder into the mill, and adjust the pH value of the pulp to 7.5; after grinding, the ground product The part with a fineness of -75μm accounts for 85% of the total mass;
[0051] S2. Copper roughing: feed the grinding product obtained in step S1 into the flotation machine, first add calcium oxide dry powder in the flotation machine, stir for 3 minutes, and adjust the pH value of the slurry to 9.5; then zinc inhibitor solid sodium metabisulfite Powder and high-efficiency copper collector are stirred for 3 minutes and 2 minutes respectively to obtain copper rough concentrate and c...
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