New flotation technique of lead zinc sulphur ore

A sulfide ore and new process technology, applied in flotation, solid separation, etc., can solve the problems of high cost, poor concentrate quality, high tailing, etc., achieve high recovery rate, reduce the mutual content of concentrate, and have little impact on separation Effect

Inactive Publication Date: 2009-04-29
HUANGSHAPING MINING BRANCH HUNAN NONFERROUS METALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an economical, applicable, good separation effect and high recovery index for th

Method used

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  • New flotation technique of lead zinc sulphur ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A new process for flotation of lead-zinc sulfide ore, the following process steps are adopted:

[0018] ①. Use a wet ball mill for ball milling. Add 400g / t of zinc sulfate, 210g / t of sodium sulfite, and 500g / t of sodium carbonate to the raw lead-zinc sulfide ore of the ball mill to calculate the beneficiation agent according to the weight of the reactants. When -200 mesh accounts for 68%, the grinding product does not go through desliming, directly adds 50g / t of ethyl butylated xanthate, 50g / t of butyl ether alcohol into the lead-sulfur mixed flotation tank for flotation, and the pH value of the flotation medium Control is 7.5;

[0019] ②. Add 190g / t of zinc sulfate and 200g / t of sodium sulfite to the target minerals flotation in step ① according to the weight of the reactants in the current step, and add 190g / t of sodium sulfite into a beneficiation, and take the foam product to obtain the mixed concentrate of lead and sulfur;

[0020] ③. Add lime 2400g / t to the flota...

Embodiment 2

[0027] A new process for flotation of lead-zinc sulfide ore, the following process steps are adopted:

[0028] ①. Use a wet ball mill for ball milling. Add 380g / t of zinc sulfate, 200g / t of sodium sulfite, and 520g / t of sodium carbonate to the lead-zinc sulfide raw ore of the ball mill to calculate the beneficiation agent according to the weight of the reactants. When -200 mesh accounts for 75%, the grinding product does not go through desliming, directly adds 40g / t of ethyl butylated xanthate, 70g / t of butyl ether alcohol into the flotation of the lead-sulfur mixed flotation tank, and the pH value of the flotation medium Control is 8;

[0029] ②. Add 210g / t of zinc sulfate and 190g / t of sodium sulfite to the target minerals flotation in step ① according to the weight of the reactants in the current step, and then add 210g / t of sodium sulfite into a beneficiation, and take the foam product to obtain a mixed concentrate of lead and sulfur;

[0030] ③. Add lime 2500g / t to the f...

Embodiment 3

[0037] A new process for flotation of lead-zinc sulfide ore, the following process steps are adopted:

[0038] ①. Use a wet ball mill for ball milling. Add 410g / t of zinc sulfate, 190g / t of sodium sulfite, and 480g / t of sodium carbonate to the raw lead-zinc sulfide ore of the ball mill to calculate the beneficiation agent according to the weight of the reactants. When -200 mesh accounts for 70%, the grinding product does not go through desliming, directly adds 60g / t of ethyl butyrate xanthate, 60g / t of butyl ether alcohol into the flotation of the lead-sulfur mixed flotation tank, and the pH value of the flotation medium Control is 8.5;

[0039] ②. Add 200g / t of zinc sulfate and 210g / t of sodium sulfite to the target minerals flotation in step ① according to the weight of the reactants in the current step, and add 200g / t of sodium sulfite into a beneficiation, and take the foam product to obtain the mixed concentrate of lead and sulfur;

[0040] ③. Add lime 2600g / t to the flo...

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Abstract

The invention relates to a new technology for lead zinc sulfide ore floatation. Lead sulfide mineral is preferably carried out with mixed floatation in a neutral or weak alkali medium, then zinc floating and lead sulfur separation are carried out in a high alkali medium. The lead sulfide mineral is firstly floated to enter product, before zinc floating, lead sulfide mixed product is obtained, only pure zinc mineral enters slurry in a zinc floating work zone, thus being beneficial to zinc floatation and avoiding the operation method of heavy pulling and heavy stress; and lead tailing has no sulfur mineral, thus reducing useless poor circulation formed in zinc floating of the sulfur mineral, saving the beneficiation reagent and improving the sorting standard.

Description

technical field [0001] The invention relates to a process for improving the mineral processing recovery index of lead-zinc sulfide ore, in particular to a new process for flotation of lead-zinc sulfide ore. Background technique [0002] The beneficiation and separation process of lead-zinc sulfide ore, especially high-sulfur lead-zinc ore, usually adopts the priority flotation process of suppressing zinc and floating lead. In the subsequent zinc floating operation, zinc mineral activator should also be added to the zinc-sulfur tailings produced. The addition of a large number of regulators further increases the consumption of collectors, resulting in the flotation phenomenon of "heavy pressure and heavy pull", resulting in low recovery rates of lead and zinc, large consumption of mineral dressing agents, poor economic benefits, and increased environmental pollution. It is the preferred flotation process for processing some high-grade lead-zinc sulfide ores and some lead-zin...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/012B03D1/008B03D1/004B03D1/002B03B1/00B03B1/04B03D101/02B03D101/04B03D101/06B03D103/02
Inventor 曾建喜王贤兴
Owner HUANGSHAPING MINING BRANCH HUNAN NONFERROUS METALS
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