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Method of quickly separating and extracting ruthenium from low content ruthenium-containing wastes

A low-content, waste technology, applied in the field of ruthenium separation, can solve the problems of low efficiency, long time for separation and extraction of ruthenium, etc., and achieves the effects of low energy consumption, high ruthenium yield and simple process

Pending Publication Date: 2019-01-04
CHENZHOU GAOXIN PLATINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the problems of long time and low efficiency for separating and extracting ruthenium in the prior art, and provides a clean and environment-friendly method for separating and extracting ruthenium, with high ruthenium leaching rate and a yield as high as 99% or more

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 10kg of ruthenium-containing waste material, add 15L of water to soak, add 1.2% polyethylene glycol and stir to disperse for 20 minutes, filter, add 30L of 6mol / L hydrochloric acid to a 50L reaction kettle, add dispersed ruthenium waste material, heat up and stir , the temperature reached 65° C., and the reaction of chlorine gas was started, and the reaction was carried out for 1 hour, the material was discharged and filtered, and the solution was neutralized by adding a mass fraction of 15% alkali.

[0023] In a closed state, add a 10% NaOH solution under negative pressure, heat up to 60°C, pass in chlorine gas, and control the reaction temperature at 95°C to generate yellow RuO 4 The gas is passed into the multi-stage hydrochloric acid absorption liquid through negative pressure, and the temperature of the hydrochloric acid absorption liquid is kept at 25°C, and the reaction produces brown-red H 2 RuCl 5 The analyzed ruthenium content in the solution and slag w...

Embodiment 2

[0025] Weigh 10kg of ruthenium-containing waste material, add 15L of water to soak, add 1.5% zinc stearate, stir and disperse for 20 minutes, filter, add 30L of 8mol / L hydrochloric acid to a 50L reaction kettle, add dispersed ruthenium waste material, heat up and stir , the temperature reached 65°C, and the chlorine gas reaction was started, and the reaction was carried out for 1 hour, the material was discharged and filtered, and the solution was neutralized by adding a mass fraction of 20% alkali.

[0026] In a closed state, add NaOH solution with a mass fraction of 20% under negative pressure, heat up to 80°C, feed chlorine gas, control the reaction temperature at 105°C, and generate yellow RuO 4 The gas is passed into the multi-stage hydrochloric acid absorption liquid through negative pressure, and the temperature of the hydrochloric acid absorption liquid is kept at 25°C, and the reaction produces brown-red H 2 RuCl 5 The ruthenium content in the solution and slag was a...

Embodiment 3

[0028] Weigh 10kg of ruthenium-containing waste material, add 15L of water to soak, add 1.2% polyethylene glycol, stir and disperse for 20 minutes, filter, add 30L6mol / L hydrochloric acid to a 50L reactor, add dispersed ruthenium waste material, heat up and stir, When the temperature reaches 80°C, the chlorine gas reaction is started, and the reaction is carried out for 1 hour, the material is discharged and filtered, and the solution is neutralized by adding a mass fraction of 30% alkali.

[0029] In a closed state, add NaOH solution with a mass fraction of 30% under negative pressure, heat up to 70°C, pass in chlorine gas, control the reaction temperature at 100°C, and generate yellow RuO 4 The gas is passed into the multi-stage hydrochloric acid absorption liquid through negative pressure, and the temperature of the hydrochloric acid absorption liquid is kept at 25°C, and the reaction produces brown-red H 2 RuCl 5 The analyzed ruthenium content in the solution and slag was...

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PUM

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Abstract

The invention discloses a method of quickly separating and extracting ruthenium from low content ruthenium-containing wastes. The method comprises the following steps: adding water into a low contentruthenium-containing resource as a raw material to be soaked, adding a dispersant to be uniformly stirred and filtering and washing the mixture; inputting dispersed residues in a reaction kettle, adding hydrochloric acid, raising the temperature to stir, introducing chlorine gas to react for a period of time after reaching the temperature, and stopping the reaction after the reaction; and filtering the solution, adding alkali into the solution to precipitate, and carrying out oxidative distillation to obtain a product ruthenium trichloride. The method disclosed by the invention has the characteristics of being simple in process flow, low in energy consumption, high in efficiency, high in ruthenium yield and clean and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of precious metal metallurgy, and in particular relates to a method for separating ruthenium from low-content ruthenium-containing waste materials. Background technique [0002] Ruthenium is a hard and brittle polyvalent rare metal element with a light gray color. It has chemical catalytic activity and good electrical conductivity. It is widely used in the field of fine chemicals and sputtering targets for computer hard disks. One of the most important compounds is an important chemical raw material in the fields of heterogeneous catalysis, homogeneous catalysis, coating, electroplating and other fields. [0003] The traditional separation and extraction of ruthenium in low-content ruthenium-containing waste materials uses dissolved carriers to enrich ruthenium or directly melts and extracts ruthenium. The enrichment method produces three wastes, which is not environmentally friendly and has a long process, ...

Claims

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Application Information

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IPC IPC(8): C22B1/00C22B7/00C22B11/06C01G55/00
CPCC01G55/005C22B1/005C22B7/006C22B11/042C22B11/06Y02P10/20
Inventor 叶咏祥杨拥军雷婧欧阳文兵雷涤尘杨静
Owner CHENZHOU GAOXIN PLATINUM
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