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Combined treatment method for nickel-iron alloy material and nickel-containing raw material

A nickel-iron alloy and joint treatment technology, applied in the field of hydrometallurgy, can solve the problems of large consumption, achieve effective utilization, save the cost of auxiliary materials, and save the consumption of alkali

Pending Publication Date: 2022-01-21
JINGMEN GEM NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And high pressure leaching needs to consume a lot of acid

Method used

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  • Combined treatment method for nickel-iron alloy material and nickel-containing raw material
  • Combined treatment method for nickel-iron alloy material and nickel-containing raw material
  • Combined treatment method for nickel-iron alloy material and nickel-containing raw material

Examples

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Effect test

Embodiment 1

[0034] A joint processing method of nickel-iron alloy material and nickel-containing raw material, comprising the following steps:

[0035] (1) Put the nickel-iron alloy material into the anode basket of the electrolytic cell after pretreatment, add the initial electrolyte, energize and carry out the electrolysis reaction, and obtain the electrolyte solution; the nickel-iron alloy material is nickel pig iron mainly composed of nickel and iron, and the iron content is 85%, and the nickel content is 10%; the nickel-iron alloy material is pretreated, and the nickel-iron alloy material is broken or cut into the size that the anode basket of the electrolytic cell can accommodate. In this embodiment, the length of the alloy material is no more than 10cm. The maximum thickness does not exceed 5cm; the initial electrolyte is H + A sulfuric acid solution with a concentration of 1mol / L;

[0036] (2) After the electrolysis reaction ends, the electrolytic solution rich in nickel and iron...

Embodiment 2

[0042] A joint processing method of nickel-iron alloy material and nickel-containing raw material, comprising the following steps:

[0043] (1) Put the nickel-iron alloy material into the anode basket of the electrolytic cell after pretreatment, add the initial electrolyte, energize and carry out the electrolysis reaction, and obtain the electrolyte solution; the nickel-iron alloy material is nickel pig iron mainly composed of nickel and iron, and the iron content is 85%, and the nickel content is 10%; the nickel-iron alloy material is pretreated, and the nickel-iron alloy material is broken or cut into the size that the anode basket of the electrolytic cell can accommodate. In this embodiment, the length of the alloy material is no more than 10cm. The maximum thickness does not exceed 5cm; the initial electrolyte is H + Concentration is the sulfuric acid solution of 5mol / L;

[0044] (2) After the electrolysis reaction ends, the electrolytic solution rich in nickel and iron i...

Embodiment 3

[0050] A joint processing method of nickel-iron alloy material and nickel-containing raw material, comprising the following steps:

[0051] (1) Put the nickel-iron alloy material into the anode basket of the electrolytic cell after pretreatment, add the initial electrolyte, energize and carry out the electrolysis reaction, and obtain the electrolyte solution; the nickel-iron alloy material is a waste nickel-iron alloy product mainly composed of nickel and iron, wherein iron The nickel content is 70%, and the nickel content is 25%. The pretreatment of the nickel-iron alloy material is to crush or cut the nickel-iron alloy material into a size that can be accommodated by the anode basket of the electrolytic cell. In this embodiment, the length of the alloy material is not more than 5cm, the maximum thickness does not exceed 2cm; the initial electrolyte is H + A sulfuric acid solution with a concentration of 10mol / L;

[0052] (2) After the electrolytic reaction finishes, the ele...

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Abstract

The invention discloses a combined treatment method for a nickel-iron alloy material and a nickel-containing raw material. The method comprises the following steps of putting the nickel-iron alloy material into an anode basket of an electrolytic bath for electrochemical dissolution, dissolving nickel and iron in an electrolyte in an ion form after electron loss, mixing the electrolyte containing nickel and iron after electrolysis with the nickel-containing raw material to prepare pulp, transferring the mixed ore pulp into a high-pressure kettle, introducing oxygen to carry out pressurized reaction, carrying out solid-liquid separation on the slurry subjected to the pressurized reaction to obtain a nickel-rich solution and iron-rich slag, further purifying the nickel-containing solution to recover nickel, and recovering iron from the iron-rich slag. According to the method, the characteristic that the content of iron and residual acid in the nickel-iron alloy electrolyte is high is fully utilized, the nickel-containing raw material is leached through the residual acid in the electrolyte and the acid released by iron ion high-pressure hydrolysis precipitation, effective utilization of the acid is achieved, the two materials are treated at the same time, separation and enrichment of nickel and iron are achieved, and the effect that multiple purposes are achieved at one stroke is achieved.

Description

technical field [0001] The invention relates to the field of hydrometallurgy, in particular to a combined treatment method of nickel-iron alloy materials and nickel-containing raw materials. Background technique [0002] Nickel-iron alloys such as nickel pig iron are important raw materials or products in the steelmaking industry. Generally, such materials are processed or recycled into required metal products by pyrotechnics. In recent years, with the development of the new energy industry, nickel is an important component in power batteries, and the market demand for nickel is increasing day by day. How to recover nickel from metal products and use it in power batteries has also become a technical solution considered by some enterprises. Electrolysis is a conventional method for processing alloy materials. For nickel-iron alloys, in order to ensure a certain electrolysis rate, it is generally required to have a sufficient concentration of acid in the electrolyte, which le...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B3/44C22B1/00C22B23/00C01G53/10
CPCC22B3/08C22B3/44C22B1/00C22B23/043C01G53/10Y02P10/20
Inventor 许开华朱少文李琴香张坤王文杰王峻
Owner JINGMEN GEM NEW MATERIAL
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