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Method for recovering rhenium from arsenic sulfide pressurization leach liquor

A pressure leaching and arsenic sulfide technology, applied in the field of hydrometallurgy, can solve the problems of low regeneration times, limited resin exchange capacity, and restrictions on large-scale industrial application, and achieve the effect of convenient storage and transportation and high rhenium recovery rate

Active Publication Date: 2014-07-09
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the ion exchange method has a simple process and low pollution, the exchange capacity of the resin is limited and the number of regenerations is low, which limits its large-scale industrial application.

Method used

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  • Method for recovering rhenium from arsenic sulfide pressurization leach liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The filter cake containing rhenium and arsenic treated in this example comes from a domestic copper smelting enterprise, and its main chemical composition is (%): As12.14~13.45, Sb 0.065~0.078, Bi 1.23~1.54, Au 2.98~3.21 (g / t), Ag 43.16~45.18(g / t), Cu8.77~9.37, Pb 3.99~4.03, Zn 0.67~0.84, S 5.13~6.43, Re 0.09~0.11, Se 0.34~0.41, Te0.0032~0.0034 , In 0.0078~0.0089, Fe 0.19~0.25, Sn 0.29~0.35, and the rest are impurities.

[0017] Put 200g of rhenium-containing arsenic filter cake in a GAS type 2L vertical autoclave, add additives, acid, water, etc., mix them in a certain proportion, put them in the axe, seal, stir, and heat up. When the temperature rises to the set value (100°C), adjust the oxygen partial pressure to the set value (0.4Mpa) with oxygen, and start timing. After reacting for 3 hours, pass cooling water to cool down, open the valve to reduce the pressure, after the material is separated from solid and liquid, the leached residue is put into an oven (60°C) ...

Embodiment 2

[0020] The filter cake containing rhenium and arsenic treated in this example comes from a domestic copper smelting enterprise, and its main chemical composition is (%): As12.14~13.45, Sb 0.065~0.078, Bi 1.23~1.54, Au 2.98~3.21 (g / t), Ag 43.16~45.18(g / t), Cu8.77~9.37, Pb 3.99~4.03, Zn 0.67~0.84, S 5.13~6.43, Re 0.09~0.11, Se 0.34~0.41, Te0.0032~0.0034 , In 0.0078~0.0089, Fe 0.19~0.25, Sn 0.29~0.35, and the rest are impurities.

[0021] Put 100g of rhenium-containing arsenic filter cake in a GAS type 2L vertical autoclave, add additives, acid, water, etc., mix them in a certain proportion, put them into the axe, seal, stir, and heat up. When the temperature rises to the set value (60°C), adjust the oxygen partial pressure to the set value (0.8Mpa) with oxygen, and start timing. After reacting for 2 hours, pass cooling water to cool down, open the valve to reduce the pressure, after the material is separated from solid and liquid, the leaching residue is put into an oven (50°C...

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Abstract

The invention discloses a method for recovering rhenium from arsenic sulfide pressurization leach liquor, and relates to recovery of rhenium from a rhenium-containing solution, and in particular relates to enriching of rhenium from arsenic sulfide pressurization leach liquor. The method is characterized by comprising the following steps: (1) performing oxygenation and pressurization on an arsenic filter cake for leaching; and (2) reducing leach liquor by using sulfur dioxide to produce arsenic trioxide, extracting rhenium in the solution by using arsenic precipitation mother liquor, and performing multi-stage reverse extraction and evaporative crystallization to produce ammonium rhenate. According to the method, an ammonium rhenate product is obtained finally by adopting a technology consisting of oxidative pressure leaching, SO2 reduction and extraction. In the entire process, the process flow is simple, the recovery rate of rhenium is high, the price of a rhenium extracting agent is low, secondary waste of valuable metal resources is avoided, and good economic benefit can be created for enterprises.

Description

technical field [0001] The invention discloses a method for recovering rhenium from arsenic sulfide pressure leaching solution, which relates to recovering rhenium from rhenium-containing solution, in particular extracting rhenium from arsenic sulfide-containing pressure leaching solution, and belongs to the field of hydrometallurgy. Background technique [0002] Rhenium is a rare refractory metal. There are almost no independent rhenium minerals in the world, and it is mostly dispersed in molybdenite and copper rhenium ore. Rhenium is widely used in metallurgy, aerospace, catalyst, electrical machinery, electronics and instrumentation and other fields. According to Mineral Commodity Summaries2013 (USGS) data, as of 2012, the global rhenium reserves were 2,500t, and the reserve base was 10,000t; the mine output of rhenium in 2012 was 52t, an increase of 2.6% compared with 2011. On January 17, 2014, the spot price of rhenium in the Shanghai market was 60,000-65,000 (yuan / kg)...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B3/44C22B3/40C22B61/00C22B30/04
CPCY02P10/20
Inventor 蒋开喜王海北王玉芳李岚张邦胜冯亚平李贺邹小平尹一男
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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