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Method for leaching indium directly from indium ore

A leaching and direct technology is applied in the field of separating indium from indium sulfide concentrate, which can solve the problem that high indium sulfide concentrate cannot be directly leached, and achieves simplified smelting process, high metal recovery rate, and short process. Effect

Inactive Publication Date: 2009-10-21
LIUJIANG HUIQIANG COKING
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The method for directly leaching indium from indium ore provided by the present invention solves the problem that high-indium sulfide concentrate cannot be directly leached, and realizes simple technical process, high recovery rate of indium metal, easy separation of indium, and small consumption of reagents the goal of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Direct leaching of indium from 2.5 tons of indium sulfide concentrate containing 1500 g / t of indium, the steps are as follows:

[0029] 1. Crush 2.5 tons of indium sulfide concentrate with 8% water content and 1500 g / t indium content, add water and ball mill, and grind until the pulp reaches 85% or more through a 200-mesh sieve.

[0030]2. According to the weight and water content of the above-mentioned ore pulp, add the calculated amount of sulfuric acid and water, so that the sulfuric acid concentration in the sulfuric acid aqueous solution is 150 grams per liter, and the liquid-solid weight ratio is 4: 1, and they are added to 15 cubic meters of In the pressure reactor, heat with steam and feed oxygen into the reactor at a flow rate of 1.4 kg / min, control the temperature in the reactor at 101°C±1°C, maintain the pressure in the reactor at 1.0MPa, and allow the indium sulfide concentrate to react Reaction leaching in the kettle for 30 minutes, the indium leaching rate...

example 2

[0035] Directly leaching indium from 2.5 tons of indium sulfide concentrate containing 4500 grams / ton of indium, the steps are as follows:

[0036] 1. Crush 2.5 tons of indium sulfide concentrate with 8% water content and 4500 g / t indium indium sulfide concentrate, add water and ball mill, and grind until the pulp reaches 85% or more through a 200-mesh sieve.

[0037] 2. According to the weight and water content of the above-mentioned ore pulp, add the calculated amount of sulfuric acid and water, so that the sulfuric acid concentration in the sulfuric acid aqueous solution is 200 grams per liter, and the liquid-solid weight ratio is 5: 1, and they are added to 15 cubic meters of In the pressure reactor, heat with steam and feed oxygen into the reactor at a flow rate of 2.5 kg / min, control the temperature in the reactor at 300°C±1°C, maintain the pressure in the reactor at 6.0MPa, and allow the indium sulfide concentrate to react Reaction leaching in the kettle for 60 minutes,...

example 3

[0042] Direct leaching of indium from 2.5 tons of indium sulfide concentrate containing 2500 grams / ton of indium, the steps are as follows:

[0043] 1. Crush 2.5 tons of indium sulfide concentrate with 8% water content and 2500 g / t indium content, add water and ball mill, and grind until the pulp reaches 85% or more through a 200-mesh sieve.

[0044] 2. According to the weight and water content of the above-mentioned ore pulp, add the calculated amount of sulfuric acid and water, so that the concentration of sulfuric acid in the sulfuric acid aqueous solution is 180 grams per liter, and the liquid-solid weight ratio is 6: 1, and they are added to 15 cubic meters of In the pressure reactor, heat with steam and feed oxygen into the reactor at a flow rate of 3.6 kg / min, control the temperature in the reactor at 200°C±1°C, maintain the pressure in the reactor at 3.0MPa, and allow the indium sulfide concentrate to react React leaching in the kettle for 120 minutes, and the indium l...

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Abstract

The invention discloses a method of leaching indium directly from indium ore, which relates to the technical field of hydrometurlogy. The method is to put indium sulfide concentration in reaction vessel immersing into vitriol solution, add oxygen, increase temperature and pressure to lead indium to appear in the solution in the form of dissolvable compound, use the process of extraction - stripping - replacement to extract indium from the leaching solution. The invention solves the problem of unable to directly leach indium from indium sulfide concentration with the prior art , compared with the prior art, the method is simple in process, easy leach indium, having high indium metal recycle rate, and low consumption of reagent.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a process method for separating indium from indium sulfide concentrate. Background technique [0002] The indium sulfide concentrate referred to in the present invention refers to minerals containing 1500-4500 grams / ton of indium, 18-35% iron, 26-38% sulfur and other valuable metal elements. [0003] The content of indium in nature is very small, and most of indium is associated with sulfide ores such as galena, sphalerite, chalcopyrite, pyrite, etc., and some are associated with tin ore. Indium-containing deposits are often polymetallic In the process of beneficiation, the rare metal indium in the polymetallic ore can be enriched into indium sulfide concentrate. The minerals of indium in the indium sulfide concentrate include sulfindium iron ore (FeIn 2 S 4 ), Copper Indium (CuInS 2 ), sulfur indium copper tin zinc ore {(Cu, Zn, Fe) 3 (InSn) S 4}} and indiumite (In(...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B3/22C22B58/00
CPCY02P10/20
Inventor 魏昶林玲魏旭王东伟周志强张迎辉
Owner LIUJIANG HUIQIANG COKING
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