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Method for deinhibition activation flotation recovery of zinc sulfide ore in copper-lead flotation tailings

A technology for flotation of tailings and sulfide zinc ore, applied in flotation, solid separation and other directions, can solve the problems of loss of zinc minerals in tailings, waste of zinc sulfide resources, and high beneficiation cost, so as to improve the flotation effect and solve the Difficult to recycle, good sorting effect

Active Publication Date: 2020-08-14
KUNMING UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In the prior art, the method for recovering sphalerite from the tailings of lead-sulfur mixed concentrate is to use lime to suppress pyrite, use copper sulfate to activate sphalerite, and add aniline as a collector to recover lead-sulfur mixed concentrate by flotation. Sphalerite in ore separation tailings; ore dressing method for recovering zinc from floating lead tailings, using copper sulfate as activator, butyl xanthate as collector, and methyl isobutyl carbinol as foaming agent Zinc minerals in lead tailings are recovered by flotation; however, both of these two methods require regrinding of zinc coarse concentrate, which consumes a lot of energy, and the cost of beneficiation is high, and a considerable part of zinc minerals is still lost in the tailings. It is because the flotation recovery of zinc sulfide minerals in polymetallic sulfide ores not only involves the activation of zinc sulfide minerals, but also needs to eliminate the impact of its pre-inhibitory effect on subsequent flotation
[0005] Therefore, the use of the traditional activator copper sulfate can only have a good activation effect on uninhibited or weakly inhibited zinc sulfide minerals, but cannot have dual effects of de-inhibition and activation on completely inhibited zinc sulfide minerals, resulting in copper A large amount of zinc sulfide resource waste in lead flotation tailings

Method used

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  • Method for deinhibition activation flotation recovery of zinc sulfide ore in copper-lead flotation tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: the mass percentage content of zinc in the copper-lead flotation tailings of this embodiment is 2.0%;

[0036] Such as figure 1 Shown, a kind of method that zinc sulfide depressurization activates flotation recovery in copper-lead flotation tailings, concrete steps are as follows:

[0037] (1) Slurry the copper-lead flotation tailings until the pulp mass percentage concentration is 30%, add lime, combined inhibitor, cuproammonia complex, combined collector and foaming agent in turn in the pulp, and carry out coarse The roughing concentrate and roughing tailings are obtained from the beneficiation operation; calculated on the basis of each ton of copper-lead flotation tailings, the amount of roughing agents added to the pulp is 800g of lime, 400g of combined inhibitors, 100g of copper ammonia complexes, and combined collection Agent 200g, foaming agent 20g;

[0038] (2) Lime, combined inhibitor, copper ammonium complex, combined collector and foaming agen...

Embodiment 2

[0044] Embodiment 2: the mass percentage content of zinc in the copper-lead flotation tailings of the present embodiment is 5.5%;

[0045] Such as figure 1 Shown, a kind of method that zinc sulfide depressurization activates flotation recovery in copper-lead flotation tailings, concrete steps are as follows:

[0046] (1) Slurry the copper-lead flotation tailings until the pulp mass percentage concentration is 35%, add lime, combined inhibitor, copper ammonia complex, combined collector and foaming agent successively in the pulp, and carry out coarse The roughing concentrate and roughing tailings are obtained from the beneficiation operation; calculated on the basis of each ton of copper-lead flotation tailings, the amount of roughing agents added to the pulp is 1200g of lime, 800g of combined inhibitors, 300g of copper ammonia complexes, and combined collection Agent 300g, foaming agent 30g;

[0047] (2) Lime, combined inhibitor, copper ammonium complex, combined collector a...

Embodiment 3

[0053] Embodiment 3: the mass percentage content of zinc in the copper-lead flotation tailings of this embodiment is 8.5%;

[0054] Such as figure 1 Shown, a kind of method that zinc sulfide depressurization activates flotation recovery in copper-lead flotation tailings, concrete steps are as follows:

[0055] (1) Slurry the copper-lead flotation tailings until the pulp mass percentage concentration is 40%, add lime, combined inhibitor, copper ammonia complex, combined collector and foaming agent successively in the pulp, and carry out coarse The roughing concentrate and roughing tailings are obtained from the beneficiation operation; calculated on the basis of each ton of copper-lead flotation tailings, the amount of roughing agents added to the pulp is 1600g of lime, 1000g of combined inhibitors, 400g of copper ammonia complexes, and combined collection Agent 400g, foaming agent 40g;

[0056] (2) Lime, combined inhibitor, copper ammonium complex, combined collector and foa...

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Abstract

The invention discloses a method for deinhibition activation flotation recovery of zinc sulfide ore in copper-lead flotation tailings, and belongs to the technical field of mineral processing. Lime isadopted to adjust the pH value of copper-lead flotation tailing pulp, a combined inhibitor is added to inhibit gangue minerals in the pulp, an activator copper-ammonia complex is added to deinhibit and activate zinc sulfide minerals in the pulp, and a combined collecting agent and a foaming agent are sequentially added to recover the zinc sulfide minerals in the pulp through flotation. The copper-ammonia complex is adopted to deinhibit and activate the inhibited zinc sulfide mineral so that the hydrophilic layer on the surface of the zinc sulfide mineral can be destroyed, the zinc sulfide mineral can be activated to form a copper-rich surface, the adsorption capacity of the collecting agent is enhanced, and hydrophobic floating of the zinc sulfide mineral is enhanced; meanwhile, the gangue minerals are subjected to synergistic inhibition by adopting the combined inhibitor, and the activated zinc sulfide minerals are subjected to synergistic hydrophobic treatment by adopting the combined collecting agent so that the technical problem that the zinc sulfide ores in the copper-lead flotation tailings are difficult to recover is solved.

Description

technical field [0001] The invention relates to a method for depressurizing and activating flotation recovery of zinc sulfide ore in copper-lead flotation tailings, belonging to the technical field of mineral processing. Background technique [0002] Zinc is an important non-ferrous metal, and its status in national economic construction is becoming increasingly important. The reason why zinc can be so widely developed and applied in industrial production is due to its inherent physical and chemical properties. Therefore, zinc is widely used in iron and steel, metallurgy, machinery, electrical, chemical industry, light industry, military and medicine and other fields . From a global perspective, zinc smelting has always used zinc sulfide minerals as raw materials, and the vast majority of industrial zinc production comes from zinc sulfide minerals, and sphalerite is the most common zinc sulfide mineral. [0003] In nature, there is almost no single zinc sulfide deposit, an...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03B1/04B03D1/018B03D1/012B03D103/04B03D101/06B03D101/02
CPCB03D1/02B03B1/04B03D1/018B03D1/012B03D2203/04B03D2201/06B03D2201/02
Inventor 丰奇成王美丽文书明赵文娟
Owner KUNMING UNIV OF SCI & TECH
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