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Method for extracting nickel from nickel-containing iron powder and preparing iron phosphate and application

A technology of ferronickel powder and ferric phosphate is applied in the field of extracting nickel and preparing ferric phosphate, which can solve the problems of high production cost and equipment maintenance cost, unsuitable promotion and the like, and achieve the effects of low cost, great economic benefit and simple process

Active Publication Date: 2021-06-25
HUNAN BRUNP RECYCLING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not produce hydrogen during the reaction process, which solves some safety problems, but this process requires high-pressure oxygen leaching, and the production cost and equipment maintenance cost are relatively high, so it is not suitable for promotion

Method used

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  • Method for extracting nickel from nickel-containing iron powder and preparing iron phosphate and application
  • Method for extracting nickel from nickel-containing iron powder and preparing iron phosphate and application
  • Method for extracting nickel from nickel-containing iron powder and preparing iron phosphate and application

Examples

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Effect test

Embodiment 1

[0041] A method for extracting nickel from nickel-containing iron powder and preparing iron phosphate, comprising the following steps:

[0042] (1) prepare respectively the sulfuric acid of 2mol / L and the phosphoric acid of 14mol / L, standby;

[0043] (2) Weigh 50g of nickel-containing iron powder, wherein the iron content is 64.13%, the nickel content is 35.67%, add the above-mentioned phosphoric acid of 37mL, then add the above-mentioned sulfuric acid of 250mL, the slurry water bath is heated to 80 ℃, and the stirring time is 3h;

[0044] (3) Add 50 mL of hydrogen peroxide, stir for 1 h, then add 7 g of aluminum hydroxide and ferric phosphate into the solution, heat up to 90° C., stir for 10 h, and filter to obtain ferric phosphate and nickel sulfate solution;

[0045](4) Slurry and wash ferric phosphate with water at a liquid-solid ratio of 5:1mL / g for 1 hour, and dry the ferric phosphate at 105°C after filtering to obtain the ferric phosphate product;

[0046] (5) Add a 2...

Embodiment 2

[0048] A method for extracting nickel from nickel-containing iron powder and preparing iron phosphate, comprising the following steps:

[0049] (1) prepare respectively the sulfuric acid of 1.5mol / L and the phosphoric acid of 13.5mol / L, standby;

[0050] (2) Weigh 100g of nickel-iron powder, wherein the iron content is 69.28%, the nickel content is 30.29%, add the above-mentioned phosphoric acid of 85mL, then add the above-mentioned sulfuric acid of 520mL, the slurry water bath is heated to 85 ℃, stirring time is 4h;

[0051] (3) Add 40mL of hydrogen peroxide, and at the same time pass through 2h of aeration oxygen, then add 15g of titanium dioxide and ferric phosphate dihydrate into the solution, heat up to 80°C, stir for 8h, and filter to obtain ferric phosphate and nickel sulfate solution;

[0052] (4) Slurry and wash ferric phosphate with water at a liquid-solid ratio of 10:1mL / g for 2 hours, filter and dry ferric phosphate at 90°C to obtain ferric phosphate product;

[...

Embodiment 3

[0055] A method for extracting nickel from nickel-containing iron powder and preparing iron phosphate, comprising the following steps:

[0056] (1) prepare respectively the sulfuric acid of 2.5mol / L and the phosphoric acid of 14.5mol / L, standby;

[0057] (2) Weigh 100g of nickel-iron powder, wherein the iron content is 85.42%, the nickel content is 13.95%, add the above-mentioned phosphoric acid of 95mL, then add the above-mentioned sulfuric acid of 200mL, the slurry water bath is heated to 75 ℃, stirring time is 6h;

[0058] (3) Add 100mL of hydrogen peroxide, stir for 0.5h, then add 20g of alumina and titanium dioxide to the solution, heat up to 85°C, stir for 6h, and filter to obtain iron phosphate and nickel sulfate solutions;

[0059] (4) Slurry and wash ferric phosphate with water at a liquid-solid ratio of 8:1mL / g for 0.5h, filter and dry ferric phosphate at 105°C to obtain ferric phosphate product;

[0060] (5) Add 5% sodium hydroxide solution to the nickel sulfate s...

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Abstract

The invention discloses a method for extracting nickel from nickel-containing iron powder and preparing iron phosphate and application. The method comprises the following steps of (1) adding sulfuric acid and phosphoric acid into the nickel-containing iron powder, and carrying out heating and stirring so as to obtain mixed slurry; (2) adding an oxidizing agent into the mixed slurry, carrying out heating and stirring, and carrying out filtering so as to obtain an iron phosphate and nickel sulfate solution; (3) washing, filtering and drying the iron phosphate so as to obtain an iron phosphate product; and (4) adding a neutralizer into the nickel sulfate solution, carrying out heating and stirring, and carrying out filtering so as to obtain the nickel sulfate solution subjected to impurity removal. According to the method and the application, the nickel-containing iron powder is subjected to acid leaching by using mixed acid, the mixed acid is added by proportioning the content of iron and nickel in the raw materials, the nickel can enter the solution in the form of ions, the iron exists in a solid phase in the form of the iron phosphate, so that the nickel and the iron in the solid phase can be effectively separated, the process is simple, energy consumption is low, the cost is low, meanwhile, large economic benefits are achieved, and the method is suitable for industrial production and application.

Description

technical field [0001] The invention belongs to the technical field of nickel-iron hydrometallurgy, and in particular relates to a method and application for extracting nickel from nickel-containing iron powder and preparing iron phosphate. Background technique [0002] The nickel ore that exists widely in nature is mainly divided into nickel sulfide ore and nickel oxide ore. Due to the high iron content in nickel ore, nickel-iron alloy can be obtained after smelting, which is mainly used to manufacture stainless steel. In recent years, the output of stainless steel has increased rapidly, which has also stimulated the rapid rise in global demand for nickel. Nickel is a non-renewable resource. Due to continuous mining and application, nickel resources have been increasingly exhausted. Therefore, the secondary nickel in ferronickel alloys has been adopted It is a development trend to convert to primary nickel that can be used in cathode materials. [0003] At present, the pos...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B23/00C01G53/10C01B25/37
CPCC22B7/007C22B23/043C01B25/375C01G53/10C01P2006/40Y02P10/20
Inventor 何芳乔延超陈若葵阮丁山谌志新邓浩臻李长东
Owner HUNAN BRUNP RECYCLING TECH
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