A kind of white metal continuous chlorine gas leaching method

A white alloy and leaching technology, applied in the direction of improving process efficiency, can solve the problems of low leaching rate, high cobalt and copper content in leaching slag, slow reaction speed, etc., and achieve the effect of high reactivity and improved economy.

Active Publication Date: 2016-08-17
LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] White metal is a copper-cobalt alloy in the form of metal particles. Its main components are Co, Cu, and Fe. The content ratio of these three elements in lily is close to 1:1:1. The conventional leaching process is mainly mixed acid leaching and Oxidative acid leaching, low leaching rate, slow reaction speed, high cobalt and copper content in leaching slag, poor economic efficiency

Method used

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  • A kind of white metal continuous chlorine gas leaching method

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Comparison scheme
Effect test

Embodiment 1

[0024] The white metal is crushed and sieved to -80 mesh, and the sieved white metal material is put into a three-compartment reactor at a rate of 400kg / h. The concentration is 60g / L hydrochloric acid solution, the liquid-solid ratio is 5:1, the temperature of the leaching process is 85°C, the potential of the 1# compartment of the leaching kettle is 497mV, the potential of the 2# compartment is 500mV, the potential of the 3# compartment is 655mV, and the leaching time is 8.2h. Slurry: The slurry obtained after leaching is continuously discharged to the leaching intermediate tank, and the leachate and filter residue are obtained by filtering with a plate and frame filter press; the filter residue is discarded after washing and filtering, and the filter residue cleaning solution is recovered.

Embodiment 2

[0026] The white metal is crushed and sieved to -100 mesh, and the sieved white metal material is put into a three-compartment reactor at a rate of 400kg / h. The concentration is 70 / L hydrochloric acid solution, the liquid-solid ratio is 5:1, the temperature of the leaching process is 104°C, the potential of the 1# compartment of the leaching kettle is 480mV, the potential of the 2# compartment is 520mV, the potential of the 3# compartment is 680mV, and the leaching time is 8h. The slurry obtained after leaching is continuously discharged to the leaching intermediate tank, and the leachate and filter residue are obtained by filtering with a plate and frame filter press; the filter residue is discarded after washing and filtering, and the filter residue cleaning solution is recovered.

Embodiment 3

[0028] The white metal is crushed and sieved to -80 mesh, and the sieved white metal material is put into a three-compartment reactor at a rate of 400kg / h. Concentration 80g / L hydrochloric acid solution, liquid-solid ratio 5:1, leaching process temperature 110°C, leaching kettle 1# compartment potential 495mV, 2# compartment potential 550mV, 3# compartment potential 685mV, leaching time 7.5h, to obtain slurry The slurry obtained after leaching is continuously discharged to the leaching intermediate tank, and the leachate and filter residue are obtained by filtering with a plate and frame filter press; the filter residue is discarded after washing and filtering, and the filter residue cleaning solution is recovered.

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Abstract

The invention discloses a continuous chlorine leaching method for white alloy. The continuous chlorine leaching method for white alloy comprises the following steps: crushing the white alloy and then sieving to obtain a powder with a size of minus 80 to minus 100 meshes; continuously adding the white alloy powder in a three-compartment leaching kettle, and adding a hydrochloric acid solution with a concentration of 60-80 g / L in the three-compartment leaching kettle; charging chlorine in each compartment of the three-compartment leaching kettle, setting different potentials in the compartments, and adequately carrying out leaching reaction to obtain slurry; continuously discharging the slurry to a leaching intermediate tank, and filtering by a plate-and-frame filter press to obtain leachate and residue; and washing and filtering the residue, and then abandoning the washed residue, and recovering the residue washing solution. The white alloy powder is high in reactivity after being crushed, and capable of increasing a speed of participating in inlet-outlet reaction; chlorine is used as an oxidizing agent in the leaching process, valuable metals such as copper, cobalt and iron in the powder enter the solution in a chloride state by controlling the potentials in the kettle, and the leaching rates of cobalt and copper can achieve more than 99%.

Description

technical field [0001] The invention relates to the technical field of nonferrous metallurgy, in particular to a continuous chlorine gas leaching method for white metal. Background technique [0002] White metal is a copper-cobalt alloy in the form of metal particles. Its main components are Co, Cu, and Fe. The content ratio of these three elements in lily is close to 1:1:1. The conventional leaching process is mainly mixed acid leaching and Oxidative acid leaching has low leaching rate, slow reaction speed, high cobalt and copper content in leaching slag, and poor economic efficiency. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a continuous chlorine gas leaching method for white metal. [0004] The present invention solves its technical problem and adopts the following technical solutions. [0005] A method for continuous chlorine leaching of white metal, comprising the following steps: [0006] Step 1, c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/10C22B15/00C22B23/00
CPCY02P10/20
Inventor 杨志强周林华闫忠强胡家彦陈文福丁庆华朱永泽冯玉洁周春元朱锐伦曾辉胡伟李洪江
Owner LANZHOU JINCHUAN NEW MATERIAL SCI & TECH
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