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Flotation separation beneficiation method for lead-zinc-tin sulfide ores

A mineral processing method, lead-zinc sulfide technology, applied in flotation, solid separation, etc., can solve the problems of ineffective recovery and waste of resources, and achieve the effect of reducing waste and improving mineral recovery

Inactive Publication Date: 2013-02-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are various flotation methods for these two types of minerals, but most of the beneficiation methods are only flotation of lead and zinc concentrates, and other valuable components have not been effectively recovered. Valuable minerals are piled up near the mine along with the tailings, causing a lot of waste of resources

Method used

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  • Flotation separation beneficiation method for lead-zinc-tin sulfide ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: The flotation separation ore dressing method of lead-zinc-tin ore in this embodiment: (such as figure 1 shown)

[0024] (1) First crush the lead-zinc-tin ore (composition and percentage range: 2wt% lead, 3wt% zinc, 9wt% sulfur, 0.4wt% tin, and the rest are impurities) until the particle size is less than 15mm, and then add water to adjust the pulp concentration to 68wt% Finally, grind the ore, and add 20% lead-zinc-tin ore dry base in the process of grinding 200 on a dry basis of ethyl sulfur nitrogen, lead-zinc-tin ore lime to adjust the slurry pH to 11, and then add inhibitors zinc sulfate and sodium sulfite in sequence (the addition of zinc sulfate is 100% of the dry basis of lead-zinc-tin ore , the addition of sodium sulfite is 100% of the dry basis of lead-zinc-tin ore ), lead-zinc-tin ore dry basis 20 The foaming agent 730A is used to keep the pulp pH > 11, and finally the grinding fineness is over 200 mesh sieve to reach more than 80wt%;

...

Embodiment 2

[0031] The flotation separation ore dressing method of the present embodiment lead-zinc-tin sulfide ore: (as figure 1 shown)

[0032] (1) First crush the lead-zinc-tin ore (composition and percentage range: 2.5wt% lead, 3.5wt% zinc, 8wt% sulfur, 0.45wt% tin, and the rest are impurities) until the particle size is less than 15mm, and then add water to adjust the slurry concentration to Grinding after 70wt%, and in the process of grinding, add 100% lead-zinc-tin ore dry basis successively 1000 on a dry basis of ethyl disulfide nitrogen, lead zinc tin ore lime to adjust the pH of the slurry to 12, and then add inhibitors zinc sulfate and sodium sulfite in sequence (the amount of zinc sulfate added is 400% of the dry basis of lead-zinc-tin ore , the addition of sodium sulfite is 400% of the dry basis of lead-zinc-tin ore ), lead-zinc-tin ore dry basis 40 The foaming agent 730A is used to keep the pulp pH > 11, and finally the grinding fineness is over 200 mesh sieve to re...

Embodiment 3

[0039] The flotation separation ore dressing method of the present embodiment lead-zinc-tin sulfide ore: (as figure 1 shown)

[0040] (1) First, crush the lead-zinc-tin ore (composition and percentage range: lead 3wt%, zinc 3.1wt%, sulfur 7wt%, tin 0.6wt%, and the rest are impurities) until the particle size is less than 15mm, and then add water to adjust the slurry concentration to 60wt % after grinding, and in the process of grinding, add 80% lead-zinc-tin ore dry base successively 850 on a dry basis of ethyl disulfide nitrogen, lead zinc tin ore lime to adjust the pH of the slurry to 11.5, and then add inhibitors zinc sulfate and sodium sulfite in sequence (the addition of zinc sulfate is 300% of the dry basis of lead-zinc-tin ore , the addition of sodium sulfite is 200% of the dry basis of lead-zinc-tin ore ), lead-zinc-tin ore dry basis 70 The foaming agent 730A is used to keep the pulp pH > 11, and finally the grinding fineness is over 200 mesh sieve to reach mo...

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Abstract

The invention discloses a flotation separation beneficiation method for lead-zinc-tin sulfide ores, in particular relates to a beneficiation method for lead-zinc-tin sulfide associated ores complex and difficult to separate, belonging to the technical field of beneficiation. The method comprises the following steps that the procedures of one roughing, one scavenging and two concentration is carried out during grinding lead-zinc-tin ores, and lead concentrate is firstly obtained; secondly concentration and scavenging are performed on the scavenged zinc, sulfur and tin mixtures to obtain zinc-sulfur mixtures and scavenging tailings; thirdly the procedures of three concentration and one scavenging are performed on the zinc-sulfur mixtures to obtain zinc concentrate and a part of sulfur concentrate; and finally sulfur concentrate and flotation tailings are scavenged to be separated from the scavenging tailings, and tin concentrate and gravity tailings are obtained by adopting the prior art for separation. According to the flotation separation beneficiation method, the grade of the obtained plumbum is 50-55%, and the recovery percent is 80-85%; the grade of the obtained zinc concentrate is 45-50%, and the recovery percent is 80-85%; the grade of the obtained sulfur is 35-40%; and the grade of the obtained tin is 40-45%.

Description

technical field [0001] The invention discloses a beneficiation method for flotation separation of lead-zinc-tin ore, in particular to a beneficiation method for complex refractory associated ore of lead-zinc-tin sulfide, belonging to the technical field of beneficiation. Background technique [0002] my country is rich in lead-zinc ore resources, which are mainly divided into two types: one is pyrite whose main target minerals are sphalerite, galena and pyrite, and the other is mainly hemimorphite, The oxidized ore of smithsonite is the main target mineral, and its lead oxidation rate is relatively high. The galena in the ore has different flotation properties due to reasons such as high embedded particle size and oxidation. Due to the wide variety of minerals contained in the lead-zinc sulfide ore, the associated components of the ore are very unstable and contain a large number of various useful minerals, such as iron, tin, copper, silver and so on. At present, there are v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/04B03D1/012B03D101/02B03D101/04B03D101/06
Inventor 刘杨曾春平周海攀
Owner KUNMING UNIV OF SCI & TECH
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