Flotation process for arsenic-containing pyrite

An arsenic pyrite and flotation technology, applied in flotation, solid separation and other directions, can solve the problems of heavy economic pressure on production enterprises and environmental hazards in the surrounding area.

Inactive Publication Date: 2013-07-24
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to my country's external drainage requirements for smelting enterprises, this part of waste acid must go through a series of complicated treatment processes before it can be discharged, and new waste residue will be generated during the treatment process. Such a cycle will not only bring heavy economic pressure to production enterprises , will also cause great harm to the surrounding environment

Method used

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  • Flotation process for arsenic-containing pyrite
  • Flotation process for arsenic-containing pyrite
  • Flotation process for arsenic-containing pyrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Select the ore containing 25.30% sulfur and 2.28% arsenic, grind the raw ore through a grinding machine until the monomers are dissociated, and then enter the flotation process, and add copper smelting waste acid (including Cu 2+ The content is 0.1mg / L), the dosage is 3000g / t, 4000g / t, 5000g / t respectively, as the activator of pyrite, adjust the pH value of the pulp to 6~7, and then add 500g of arsenopyrite inhibitor sodium humate / t, collector butyl xanthate 120g / t, pine oil 100g / t for pyrite flotation to obtain sulfur concentrate.

[0012] Table 1 Sulfur concentrate flotation indicators

[0013]

Embodiment 2

[0015] Select the ore containing 25.30% sulfur and 2.28% arsenic, grind the raw ore through a grinding machine until the monomers are dissociated, and then enter the flotation process, and add copper smelting waste acid (including Cu 2+ Content selection 0.2mg / L), the dosage is 3000g / t, 4000g / t, 5000g / t respectively, as the activator of pyrite, adjust the pH value of the pulp to 6~7, and then add 500g of arsenopyrite inhibitor sodium humate / t, collector butyl xanthate 120g / t, pine oil 100g / t for pyrite flotation to obtain sulfur concentrate.

[0016] Table flotation indicators of disulfide concentrate

[0017]

Embodiment 3

[0019] Select the ore containing 25.30% sulfur and 2.28% arsenic, grind the raw ore through a grinding machine until the monomers are dissociated, and then enter the flotation process, and add copper smelting waste acid (including Cu 2+ The content is 0.3mg / L), the dosage is 3000g / t, 4000g / t, 5000g / t respectively, as the activator of pyrite, adjust the pH value of the pulp to 6~7, and then add 500g of arsenopyrite inhibitor sodium humate / t, collector butyl xanthate 120g / t, pine oil 100g / t for pyrite flotation to obtain sulfur concentrate.

[0020] Table 3 Sulfur Concentrate Flotation Index Situation

[0021]

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Abstract

The invention relates to a flotation process for arsenic-containing pyrite. The method comprises the following steps: grinding ore through an ore mill until monomer separation and then entering a flotation process; adding copper smelting waste acid as an activator of pyrite; adjusting the pH (Potential of Hydrogen) value to be 6-7; and adding an arsenopyrite inhibitor, a collector and pine oil to perform pyrite flotation so as to obtain low-arsenic sulfur concentrate. The copper smelting waste acid adopted by the flotation process is waste acid stock solution of a copper smelting plant, and the using amount is 3,000-5,000 g/t; and Cu<2+> included in the copper smelting waste acid is 0.1-0.3 mg/L. The process has the advantages of simple flow, low medicament cost, capability of recycling the copper smelting waste acid of the copper smelting plant, low-arsenic high-sulfur sulfur concentrate can be obtained by the process, and the process has good industrialapplicationprospect.

Description

technical field [0001] The invention relates to the technical field of flotation of polymetallic sulfide ores, in particular to a flotation process of arsenic-containing pyrite. Background technique [0002] A large amount of acid gas is often produced in the hydrometallurgical production process. After flue gas purification, part of the acid gas can be converted into sulfuric acid for reuse, while the other part becomes waste acid. According to my country's external drainage requirements for smelting enterprises, this part of waste acid must go through a series of complicated treatment processes before it can be discharged, and new waste residue will be generated during the treatment process. Such a cycle will not only bring heavy economic pressure to production enterprises , will also cause great harm to the surrounding environment. [0003] The present invention applies copper smelting waste acid to the flotation process of arsenic-containing pyrite, replaces sulfuric aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/04
Inventor 刘智林叶雪均许方
Owner JIANGXI UNIV OF SCI & TECH
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