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Method for recovering rhenium, copper, selenium and sulfur in rhenium concentrates

A concentrate and copper precipitation technology, which is applied in the field of recovering rhenium, selenium and sulfur from copper and rhenium concentrates, can solve the problems of complex components, achieve high recovery rate and purity, increase the sulfuration reaction rate, and improve the recovery rate.

Active Publication Date: 2017-10-27
YANGGU XIANGGUANG COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rhenium-containing materials generally have complex components and contain more valuable elements such as copper, selenium, and sulfur. How to effectively separate and comprehensively recycle the valuable elements in rhenium-containing materials from rhenium is a trend and is also advocated by the state. The policy of comprehensive utilization of resources and turning waste into treasure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1.1 Oxidation leaching

[0034] Add 200kg dry weight of the washed filter residue A (rhenium-rich residue) to the reactor according to the liquid-solid ratio of 3:1, add 600L of hydrogen peroxide with a concentration of 27.5% for oxidation leaching, the reaction time is 12h, the reaction temperature is 60°C, and the oxidation leachate and oxidation leaching solution are obtained. Leach slag; the composition of rhenium-rich slag is as shown in Table 1, and the dry weight of oxidized leaching slag is 158kg, and the composition is as shown in Table 2;

[0035] Table 1 The above-mentioned rhenium-rich slag composition data table

[0036] element

[0037] Table 2 Oxidation leaching slag composition data table

[0038] element

[0039] It can be seen from Table 2 that the leaching rate of rhenium is 96%, the leaching rate of copper is 99%, the rate of sulfur entering the slag is 98.5%, and the rate of selenium entering the slag is 98.7%.

[0040] 1.2 Neu...

Embodiment 2

[0053] 1.1 Oxidation leaching

[0054] The washed filter residue A (rhenium-rich residue) with a dry weight of 200 kg was added to the reactor according to the liquid-solid ratio of 8:1, and 1600 L of hydrogen peroxide with a concentration of 27.5% was added for oxidative leaching. The reaction time was 8 hours and the reaction temperature was 40°C to obtain the oxidized leachate and Oxidation leaching slag; the composition of rhenium-rich slag is as shown in Table 5, and the dry weight of oxidization leaching slag is 144kg, and the composition is as shown in Table 6;

[0055] Table 5 Rhenium-rich slag composition data table

[0056] element

[0057] Table 6 Oxidation leaching slag composition data table

[0058] element

[0059] It can be seen from Table 6 that the leaching rate of rhenium is 99.1%, the leaching rate of copper is 99.8%, the rate of sulfur entering the slag is 99.1%, and the rate of selenium entering the slag is 99.5%.

[0060] 1.2 Neutra...

Embodiment 3

[0073] 1.1 Oxidation leaching

[0074] Add 200kg dry weight of the washed filter residue A (rhenium-rich residue) to the reaction kettle according to the liquid-solid ratio of 5:1, add 1000L of hydrogen peroxide with a concentration of 27.5% for oxidation leaching, the reaction time is 14h, and the reaction temperature is 70°C to obtain the oxidation leachate and oxidation leaching solution. Leaching slag; the composition of rhenium-rich slag is as shown in Table 9, and the dry weight of oxidized leaching slag is 149kg, and the composition is as shown in Table 10;

[0075] Table 9 Rhenium-rich slag composition data table

[0076] element

[0077] Table 10 Oxidation leaching slag composition data table

[0078] element

[0079] As can be seen from Table 10, the leaching rate of rhenium is 99.4%, the leaching rate of copper is 99.2%, the rate of sulfur entering the slag is 99%, and the rate of selenium entering the slag is 99.6%;

[0080] 1.2 Neutralization...

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Abstract

The invention provides a method for recovering rhenium, copper, selenium and sulfur in rhenium concentrates. The method comprises the following steps: A) washing the rhenium concentrates, and filtering the rhenium concentrates to obtain a filtrate A and filter residues A; B) oxidatively leaching the filter residues A, and filtering the leached filter residues A to obtain a filtrate B and filter residues B; C) neutralizing the filtrate B for copper sedimentation to obtain copper hydroxide and a crude ammonium perrhenate solution, carrying out ion exchange on the crude ammonium perrhenate solution, carrying out thickening crystallization on the obtained solution to obtain ammonium perrhenate, carrying out sulfidation reaction on the filter residues B, and filtering the treated filter residues B to obtain a filtrate C and filter residues C. The method for recovering the rhenium, the copper, the selenium and the sulfur in the rhenium concentrates provided by the invention fully recovers and utilizes the copper, the selenium and the sulfur in the rhenium concentrates while treating the rhenium concentrates to recover the rhenium.

Description

technical field [0001] The invention relates to the technical field of rare and precious metal alloy recovery, in particular to a method for recovering rhenium, copper, selenium and sulfur from rhenium concentrate. Background technique [0002] Due to their excellent properties, rhenium and rhenium alloys are mainly used in petrochemical, national defense and aerospace, electronics, metallurgy and other fields. As a rare element, rhenium is mainly associated with molybdenite, and a small amount is associated with copper ore. At present, solid materials containing rhenium at home and abroad are mainly derived from molybdenum concentrate roasting soot, and the main form of rhenium in molybdenum concentrate roasting soot is ReO 2 、ReO 3 、Re 2 S and ReS 2 . [0003] In the process of copper smelting and molybdenum smelting, in order to recover metallic rhenium, various techniques for recovering rhenium have been researched and developed. For example, Chinese Patent Applica...

Claims

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Application Information

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IPC IPC(8): C22B3/04C22B3/44C22B3/42C22B15/00C22B61/00C01G47/00C01G3/02
CPCC01G3/02C01G47/00C01P2006/80C22B3/04C22B3/42C22B3/44C22B15/0065C22B15/0089C22B61/00Y02P10/20
Inventor 王志普陈一恒丁成芳
Owner YANGGU XIANGGUANG COPPER
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