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Carbonyl group method of extracting cobalt in nickel copper alloy

A carbonyl method, nickel-copper technology, applied in carbonyl cobalt and other directions, can solve the problems of high energy consumption, complex process, low recovery rate, etc., and achieve the effects of low reaction temperature, simple reaction process and short reaction time.

Active Publication Date: 2010-05-12
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the disadvantages of complex process, many reagents required, low recovery rate, and large energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Add 50g of nickel-copper primary alloy into the reactor. After the reactor is replaced by CO, the catalyst hydrogen sulfide CO gas containing 0.1% by volume is continuously fed into the reactor, and the reaction is carried out at a pressure of 20.0MPa and a temperature of 185°C for 45 hour, the reaction mixture containing cobalt carbonyl is introduced into the condensing gas-liquid separator to collect cobalt carbonyl, and the tail gas is recycled, and the cobalt yield is 30.1%.

Embodiment 2

[0012] Add 50g of nickel-copper primary alloy into the reactor. After the reactor is replaced by CO, the reactor is continuously fed with hydrogen sulfide CO gas containing 0.5% catalyst hydrogen sulfide, and the reaction is carried out at a pressure of 20.5MPa MPa and a temperature of 190°C. After 45 hours, the reaction mixture containing cobalt carbonyl was introduced into the condensing gas-liquid separator to collect cobalt carbonyl, and the tail gas was recycled. The cobalt yield was 32.0%.

Embodiment 3

[0014] Add 50g of nickel-copper primary alloy into the reactor. After the reactor is replaced by CO, CO gas containing catalyst hydrogen sulfide with a volume percentage of 0.3% is continuously fed into the reactor, and the reaction is carried out at a pressure of 21.0MPa MPa and a temperature of 195°C. After 45 hours, the reaction mixture containing cobalt carbonyl was introduced into the condensing gas-liquid separator to collect cobalt carbonyl, and the tail gas was recycled. The cobalt yield was 33.4%.

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Abstract

The invention relates to a method to extract cobalt from primary alloy of nickel-copper by using carbonyl. The process of extracting is characterized in that: Under the pressure of 20.0-25.0MPa and the temperature of 150-250deg.C, the primary alloy of nickel-copper carries carbonylation reaction by continuously inletting CO with catalyst. In this method, the reaction temperature for composing cobalt carbonyl is low and has extensive applicability and ideal effect. The yield of composing cobalt carbonyl is high and the reaction time is short. Because of being under high pressure, requirements of reaction materials are not exacting, which makes its extensively application. With its simple crafts and flush materials, the method is applicable for commercial production.

Description

technical field [0001] The invention discloses a method for extracting cobalt in a nickel-copper primary alloy by a carbonyl method, relating to a method for producing cobalt carbonyl from a nickel-copper primary alloy. Background technique [0002] The technology of extracting metals by carbonyl method has been developed for more than 100 years in foreign countries, among which nickel carbonyl and iron carbonyl are the main ones. People have also used the carbonyl method to extract cobalt from the raw materials to produce cobalt powder, catalysts, etc.; under high temperature and high pressure conditions, cobalt carbonyl was prepared using cobalt carbonate and cobalt halides as raw materials. This method has the disadvantages of complex process, many reagents required, low recovery rate, and large energy consumption. In the copper-nickel production process, how to recover the cobalt in the copper-nickel primary alloy, especially how to convert the cobalt in the alloy into ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B23/02C22B5/20C01G51/02B01J27/04
Inventor 李永军张强林谭世雄肖冬明王多冬刘军位李朝平王良王大窝
Owner JINCHUAN GROUP LIMITED