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Treatment process of nickel-containing alloy powder in hydrochloric acid system

A technology of nickel alloy powder and treatment process is applied in the field of treatment technology of nickel-containing alloy powder in a hydrochloric acid system, which can solve the problems of difficult recovery of nickel alloy powder and the like, and achieve the effect of realizing recycling.

Pending Publication Date: 2021-09-07
金川镍钴研究设计院有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem that the nickel alloy powder is not easy to recover the valuable metal nickel element, and provide a high-efficiency and clean nickel-containing alloy powder treatment process for the selective leaching of nickel element and the recycling of leaching reagents

Method used

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  • Treatment process of nickel-containing alloy powder in hydrochloric acid system
  • Treatment process of nickel-containing alloy powder in hydrochloric acid system
  • Treatment process of nickel-containing alloy powder in hydrochloric acid system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The composition of the nickel-containing alloy powder in this embodiment is shown in Table 1.

[0021] Table 1 Composition of nickel-containing alloy powder (wt%)

[0022]

[0023] The hydrochloric acid system treatment process of the nickel-containing alloy powder comprises the following steps:

[0024] (1) Pre-soaking of nickel-containing alloy powder: Mix nickel-containing alloy powder, water and concentrated hydrochloric acid (36wt%) at a ratio of 1:8:0.25 and then stir for pre-soaking. The pre-soaking temperature is 60°C and the pre-soaking time is 1 hour;

[0025] (2) High-pressure oxygen leaching: Pour the prepreg slurry into the autoclave, raise the temperature to 150°C, feed oxygen, oxygen partial pressure 0.2Mpa, reaction pressure 0.7Mpa, reaction time 1.5h, cool down and liquid-solid Separation, the output leaching slag is stored, and the leachate enters the neutralization and impurity removal process;

[0026] (3) Neutralization and impurity removal: Ad...

Embodiment 2

[0031] The composition of the nickel-containing alloy powder in this embodiment is shown in Table 2.

[0032] Table 2 Composition of nickel-containing alloy powder (wt%)

[0033]

[0034] The hydrochloric acid system treatment process of the nickel-containing alloy powder comprises the following steps:

[0035] (1) Pre-soaking of nickel-containing alloy powder: Mix nickel-containing alloy powder, water and concentrated hydrochloric acid (36wt%) at a ratio of 1:8:0.3 and then stir for pre-soaking. The pre-soaking temperature is 65°C and the pre-soaking time is 1 hour;

[0036] (2) High-pressure oxygen leaching: Pour the prepreg slurry into the autoclave, raise the temperature to 160°C, feed oxygen, oxygen partial pressure 0.2Mpa, reaction pressure 0.8Mpa, reaction time 1h, cooling and liquid-solid separation , the output leaching slag is piled up, and the leachate enters the neutralization and impurity removal process;

[0037] (3) Neutralization and impurity removal: Add ...

Embodiment 3

[0042] The composition of the nickel-containing alloy powder in this embodiment is shown in Table 3.

[0043] Table 3 Composition of nickel-containing alloy powder (wt%)

[0044]

[0045] The hydrochloric acid embodiment treatment process of the nickel-containing alloy powder comprises the following steps:

[0046] (1) Pre-soaking of nickel-containing alloy powder: Mix nickel-containing alloy powder, water and concentrated hydrochloric acid (36wt%) at a ratio of 1:10:0.25, then stir for pre-soaking. The pre-soaking temperature is 60°C, and the pre-soaking time is 1 hour;

[0047] (2) High-pressure oxygen leaching: Pour the prepreg slurry into the autoclave, raise the temperature to 150°C, feed oxygen, oxygen partial pressure 0.2Mpa, reaction pressure 0.7Mpa, reaction time 1.5h, cool down and liquid-solid Separation, the output leaching slag is stored, and the leachate enters the neutralization and impurity removal process;

[0048] (3) Neutralization and impurity removal:...

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Abstract

The invention provides a treatment process of nickel-containing alloy powder in a hydrochloric acid system. The treatment process comprises the following steps that (1) presoaking of the nickel-containing alloy powder is carried out, specifically, the nickel-containing alloy powder, concentrated hydrochloric acid and water are mixed, and then heated, stirred and presoaked; (2) high-pressure oxygen introduction and leaching is carried out, specifically, prepreg is poured into a high-pressure kettle, heating is carried out, oxygen is introduced to react for a certain time, cooling and liquid-solid separation are carried out, leaching residues are produced and stacked, and leaching liquid enters a next process; (3) neutralization and impurity removal are carried out, specifically, the pH value of the leaching liquid is adjusted by using nickel carbonate, a neutralization solution and neutralization slag are produced, and the neutralization slag returns to the leaching process; (4) cobalt extraction with resin is carried out, specifically, cobalt ions in the neutralization solution is adsorbed with the resin to produce cobalt carbonate precipitate and cobalt-extracted liquid; and (5) product preparation is carried out, specifically, nickel carbonate is prepared from a small part of cobalt-extracted liquid for a neutralization and impurity removal process, the rest liquid is concentrated and pyrolyzed, hydrochloric acid is produced for recycling, and nickel oxide is taken as a final product. According to the treatment process, the nickel oxide product is produced through the leaching, purifying and pyrolyzing processes, meanwhile, hydrochloric acid and a neutralizing and impurity-removing reagent are recycled, and the treatment process is clean and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal hydrometallurgy, and in particular relates to a process for treating nickel-containing alloy powder in a hydrochloric acid system. Background technique [0002] Nickel has good plasticity, corrosion resistance and magnetic properties. It is mainly used in the fields of steel, nickel-based alloys, electroplating and batteries. It is widely used in various military manufacturing industries such as aircraft and radar, civil machinery manufacturing and electroplating industries. Wait. With the depletion of nickel resources, people pay more and more attention to the secondary recycling of nickel. Due to the high content of iron in the nickel-containing alloy powder, it is difficult to economically and effectively recover the valuable metal nickel in the pyro-smelting process or the hydro-smelting process. Therefore, it is of great practical significance to carry out comprehensive utilization...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B23/00
CPCC22B7/007C22B23/0423C22B3/24Y02P10/20
Inventor 贺来荣沙滨宗红星张鹏陈小林魏建周姚菲王多江
Owner 金川镍钴研究设计院有限责任公司
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