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Inhibitor for copper lead sulphide minerals and method for conducting flotation separation with inhibitor

A mineral flotation and separation method technology, applied in flotation, solid separation, etc., can solve problems such as poor suppression effect, incomplete separation effect of copper and lead, and large environmental hazards, so as to promote clean production and reduce processing costs and treatment difficulty, and the effect of improving the comprehensive recovery rate

Active Publication Date: 2017-11-17
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an inhibitor of copper-lead sulfide minerals and a method for flotation separation thereof to solve the problems of existing inhibitors such as large environmental hazards, poor inhibitory effect and incomplete copper-lead separation effect

Method used

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  • Inhibitor for copper lead sulphide minerals and method for conducting flotation separation with inhibitor
  • Inhibitor for copper lead sulphide minerals and method for conducting flotation separation with inhibitor
  • Inhibitor for copper lead sulphide minerals and method for conducting flotation separation with inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In a copper-lead-zinc complex polymetallic sulfide mine in Hunan, the copper content in the ore is 0.34%, and the lead content is

[0044] 1.23%, the grade of raw ore is low, and different minerals are metasomatically symbiotic and wrapped with each other, and the particle size of useful minerals is not uniform, and some are fine-grained. Phase analysis shows that the copper and lead in the raw ore are mainly in the form of It exists in the form of chalcopyrite, chalcocite, bornite, lead sulfide and other sulfide ores. The gangue minerals are mainly quartz, and there are a small amount of chlorite and calcite. According to the process mineralogy characteristics of the ore, the process of copper-lead mixed flotation to obtain mixed concentrate and then copper-lead separation process is used to recover the valuable metals. The specific process is as follows: figure 1 shown, including the following steps:

[0045] (1) Grinding the raw ore, after grinding, the fineness to ...

Embodiment 2

[0058] The content of copper in a raw ore in Anhui is 0.51%, and the content of lead is 0.96%. The process of three fines and two sweeps is separated, and the specific process is as follows figure 1 shown, including the following steps:

[0059] (1) Grinding the raw ore, after grinding, the fineness to -0.074mm accounts for 86.5%;

[0060] (2) Carry out copper-lead mixed flotation by grinding, the medicament system adopted is: butyl xanthate 20g / t, Z200 35g / t as collector; 2# oil 20g / t as foaming agent; zinc sulfate 500g / t, sodium sulfide 180g / t and sodium carbonate 550g / t as inhibitors;

[0061] (3) Add 1000g / t of activated carbon to the copper-lead mixed coarse concentrate and stir for 8min; add 100g / t of ferric chloride solution and stir for 3min; add 800g / t of sodium humate and stir for 5min; add 50g / t of thiocarbamate t is used as a collector, stirring for 3 minutes to carry out copper and lead separation roughing operation;

[0062] (4) Carry out 3 times of benefici...

Embodiment 3

[0072] The copper content in a raw ore in Guizhou is 0.78%, and the lead content is 1.42%. The process of three fines and two sweeps is separated, and the specific process is as follows figure 1 shown, including the following steps:

[0073] (1) Grinding the raw ore, after grinding, the fineness to -0.074mm accounts for 82.5%;

[0074] (2) Carry out copper-lead mixed flotation by grinding, the medicament system adopted is: butyl xanthate 20g / t, Z200 35g / t as collector; 2# oil 20g / t as foaming agent; zinc sulfate 500g / t, sodium sulfide 180g / t and sodium carbonate 550g / t as inhibitors;

[0075] (3) Add 800g / t of activated carbon to the copper-lead mixed coarse concentrate and stir for 6min; add 75g / t of ferric chloride solution and stir for 3min; add 600g / t of sodium humate and stir for 5min; add 30g / t of thiocarbamate t is used as a collector, stirring for 3 minutes to carry out copper and lead separation roughing operation;

[0076] (4) Carry out 3 times of beneficiation ...

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Abstract

The invention discloses a novel combined inhibitor for copper lead sulphide mineral flotation separation. The inhibitor is formed by mixing a ferric chloride solution with the mass concentration being 1%-3% and a humic acid substance solution with the mass concentration being 8%-10%, and the mass proportion of the ferric chloride (FeCl3) solution and the humic acid substance solution is 1:(6-10). A flotation separation method for copper lead sulphide minerals is provided. The method comprises the following steps that 1, raw ore is subjected to ore grinding; 2, copper and lead mixed flotation is conducted on ground ore; 3, flotation separation is conducted, wherein copper and lead mixed rough concentrate is subjected to reagent removal, the inhibitor composed of the ferric chloride (FeCl3) solution and the humic acid substance solution is added, a collecting agent and a foaming agent are added, and copper concentrate and lead concentrate are obtained through roughing, concentration and scavenging. The inhibitor is applied to copper lead sulphide mineral separation, the copper and lead proportion in the concentrated ore can be lowered, and the grade of the concentrated ore is improved; the advantages that the mineral recovery rate is high, the economical and environmentally friendly properties are achieved, and beneficiation wastewater is easy to process are achieved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to an inhibitor of copper-lead sulfide minerals and a flotation separation method using the same. Background technique [0002] Chalcopyrite and galena are two important non-ferrous metal resources and an important material basis for national economic construction. Due to the similar natural buoyancy of chalcopyrite and galena, in natural deposits, the two are often densely symbiotic, and the phenomenon of mutual wrapping is serious. The resource characteristics of copper and lead minerals are becoming more and more prominent, which makes the flotation and separation of copper and lead minerals more difficult. Carrying out research on the separation of copper and lead sulfide minerals is of great significance for improving the utilization rate of copper and lead mineral resources and optimizing the subsequent metallurgical process. [0003] In the copper-lead flotation sep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06
Inventor 焦芬覃文庆刘维王道委王云帆薛凯
Owner CENT SOUTH UNIV
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