Method for regenerating high-purity nickel sulfate from nickel-based alloy waste material

A technology of nickel-based alloy waste and nickel sulfate, applied in the direction of improving process efficiency, etc., can solve the problem of no report on the regeneration of high-purity nickel sulfate, and achieve the effects of strong raw material adaptability, environmental friendliness, and low cost

Active Publication Date: 2015-05-27
XIAN RAREALLOYS
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] At present, the research on the regeneration of high-purity nickel sulfate from nickel-based alloy waste has not been reported yet

Method used

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  • Method for regenerating high-purity nickel sulfate from nickel-based alloy waste material
  • Method for regenerating high-purity nickel sulfate from nickel-based alloy waste material
  • Method for regenerating high-purity nickel sulfate from nickel-based alloy waste material

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Embodiment 1

[0039] to combine figure 1 , the present embodiment regenerates the method for high-purity nickel sulfate from nickel-base alloy waste material and comprises the following steps:

[0040] Step 1. Melting the nickel-based alloy scrap into a liquid state in a high-frequency induction melting furnace to obtain an alloy solution; after testing, the nickel-based alloy scrap contains 62.34wt% of Ni and 8.67wt% of Co;

[0041] Step 2, using water atomization to atomize the alloy solution described in step 1 to obtain alloy powder;

[0042] Step 3, place the alloy powder in step 2 in a leaching acid for a leaching treatment, obtain a leaching solution and a leaching slag after solid-liquid separation; the concentration of hydrogen ions in the leaching acid is 2mol / L, the The volume V of the leaching acid in the first stage 1 Meet: V 1 =5m 1 , where m 1 is the mass of alloy powder, m 1 The unit is g, V 1 The unit is mL, the temperature of the first-stage leaching treatment is 75°C...

Embodiment 2

[0061] combine figure 1 , the present embodiment regenerates the method for high-purity nickel sulfate from nickel-base alloy waste material and comprises the following steps:

[0062] Step 1. Melting the nickel-based alloy scrap into a liquid state in an electric arc furnace to obtain an alloy solution; after testing, the nickel-based alloy scrap contains 58.31wt% of Ni and 10.24wt% of Co;

[0063] Step 2, using a gas atomization method to atomize the alloy liquid described in step 1 to obtain alloy powder;

[0064] Step 3, placing the alloy powder described in step 2 in a stage of leaching acid for a stage of leaching treatment, and obtaining a stage of leachate and a stage of leaching slag after solid-liquid separation; the concentration of hydrogen ions in the stage of leaching acid is 4mol / L, the resulting The volume V of the leaching acid in the first stage 1 Meet: V 1 =6m 1 , where m 1 is the mass of alloy powder, m 1 The unit is g, V 1 The unit is mL, the temper...

Embodiment 3

[0083] combine figure 1 , the present embodiment regenerates the method for high-purity nickel sulfate from nickel-base alloy waste material and comprises the following steps:

[0084] Step 1. Melting the nickel-based alloy scrap into a liquid state in an intermediate frequency induction melting furnace to obtain an alloy liquid; after testing, the nickel-based alloy scrap contains 50.21wt% of Ni and 9.77wt% of Co;

[0085] Step 2, using water atomization to atomize the alloy solution described in step 1 to obtain alloy powder;

[0086] Step 3, place the alloy powder in step 2 in a leaching acid for a leaching treatment, obtain a leaching solution and a leaching slag after solid-liquid separation; the concentration of hydrogen ions in the leaching acid is 5mol / L, and the The volume V of the leaching acid in the first stage 1 Meet: V 1 = 4m 1 , where m 1 is the mass of alloy powder, m 1 The unit is g, V 1 The unit is mL, the temperature of the first-stage leaching treatm...

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Abstract

The invention provides a method for regenerating high-purity nickel sulfate from a nickel-based alloy waste material. The method comprises the following steps of: 1, fusing the nickel-based alloy waste material; 2, atomizing; 3, carrying out first-stage leaching treatment to obtain a first-stage leaching solution and a first-stage leaching residue; 4, respectively treating the first-stage leaching solution and the first-stage leaching residue, carrying out second-stage leaching on the first-stage leaching residue, then regulating the concentration of hydrogen ions contained in a second-stage leaching solution, and then substituting for first-stage leaching acid for recycling; sequentially carrying out first-stage precipitation impurity removal, second-stage precipitation impurity removal, nickel and cobalt extraction separation, sodium ion or / and ammonium ion extraction removal, sulfuric acid reverse extraction, oil adsorption removal and evaporative crystallization treatment on the first-stage leaching solution to obtain the high-purity nickel sulfate. The method provided by the invention can be used for effectively recovering nickel contained in the nickel-based alloy waste material so as to be prepared into the high-purity nickel sulfate and directly applying the high-purity nickel sulfate to related industries, such as accumulators and electroplating, and has the characteristics of high raw material adaptability, high product purity, less environmental pollution and the like.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metallurgy, and in particular relates to a method for regenerating high-purity nickel sulfate from nickel-based alloy waste. Background technique [0002] Nickel is an important strategic reserve metal, widely used in aviation, military industry, chemical industry, electronics, etc. my country is a nickel-deficient country. With the rapid development of my country's economy and the continuous development of high-tech, the application range of nickel in modern industry continues to expand, and the demand continues to increase. my country has now become the world's largest nickel consumer, but nickel primary mineral resources are increasingly scarce. Therefore, the comprehensive development and utilization of various nickel-containing secondary resources is an effective way and an inevitable choice to make up for the serious shortage of primary mineral resources. [0003] Secondary resource Nic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B23/00
CPCY02P10/20
Inventor 王靖坤李进王治钧彭济时许万祥孙晓亮
Owner XIAN RAREALLOYS
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