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Method for producing high-purity iron powder

An iron powder and high-purity technology, applied in the field of iron slag reuse, can solve the problems of environmental pollution and resource waste, achieve low energy consumption, improve recovery rate, and solve the effects of environmental pollution and resource waste

Inactive Publication Date: 2019-07-12
徐州润锋新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Iron slag, as the waste produced in the steelmaking process, contains not only a large amount of inorganic waste, but also many iron particles. Direct disposal of this part of waste will cause waste of resources and pollute the environment

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for producing high-purity iron powder, comprising the following methods:

[0026] Step 1: Put the collected iron slag into the mixed solution and soak for 2 hours, stirring continuously during the soaking process, the mixed solution is composed of 20 parts of sodium carbonate, 15 parts of 2-methylpropene and 350 parts of pure water;

[0027] Step 2: filtering the solid-liquid mixture obtained in step 1 to obtain solid slag;

[0028] Step 3: adding coke to the fixed slag under the condition of 1450 degrees to obtain molten iron;

[0029] Step 4: casting molten iron into iron plates;

[0030] Step 5: Put the iron plate in step 4 into the electrolytic tank as an anode plate, and put a nickel-chromium alloy plate in the electrolytic tank as a cathode for electrolysis, and collect high-purity iron powder on the stainless steel plate after electrolysis.

[0031] The amount of iron obtained per kilogram of iron slag is 48 grams, and the purity is 96.2%.

Embodiment 2

[0033] A method for producing high-purity iron powder, comprising the following methods:

[0034] Step 1: Put the collected iron slag into the mixed solution and soak for 2 hours, stirring continuously during the soaking process, the mixed solution is composed of 25 parts of sodium carbonate, 10 parts of 2-methylpropene and 350 parts of pure water;

[0035] Step 2: filtering the solid-liquid mixture obtained in step 1 to obtain solid slag;

[0036] Step 3: adding coke to the fixed slag under the condition of 1600 degrees to obtain molten iron;

[0037] Step 4: casting molten iron into iron plates;

[0038] Step 5: Put the iron plate in step 4 into the electrolytic tank as an anode plate, and put a nickel-chromium alloy plate in the electrolytic tank as a cathode for electrolysis, and collect high-purity iron powder on the stainless steel plate after electrolysis.

[0039] The amount of iron obtained per kilogram of iron slag is 58 grams, and the purity is 97.1%.

[0040] Th...

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PUM

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Abstract

The invention discloses a method for producing high-purity iron powder. The method for producing the high-purity iron powder comprises the following steps: step 1, the collected iron slag is placed into a mixed solution and soaked for 2 hours, stirring is continuously carried out in the soaking process, and the mixed solution is composed of 20-25 parts of sodium carbonate, 10-15 parts of 2-methacrylonitrile and 350 parts of pure water; step 2, a solid-liquid mixture obtained in the step 1 is filtered to obtain solid slag; step 3, the solid slag is added into coke under the condition of 1450-1600 DEG C to obtain molten iron; step 4, the molten iron is cast into an iron plate; and step 5, the iron plate in the step 4 is placed into an electrolysis bath and used as an anode plate, a nickel-chromium alloy plate is placed into the electrolysis bath as a cathode, electrolysis is carried out, and the high-purity iron powder is collected on a stainless steel plate after the electrolysis is concluded. According to the method, the iron powder is produced by virtue of the iron slag, so that the purpose of iron slag waste utilization can be effectively achieved, and the value of the iron slagcan be adequately exerted.

Description

technical field [0001] The invention relates to the technical field of iron slag reuse, in particular to a method for producing high-purity iron powder. Background technique [0002] Iron slag, as a waste produced in the steelmaking process, contains not only a large amount of inorganic waste, but also many iron particles. Direct disposal of this part of waste will cause waste of resources and pollute the environment. Powder metallurgy is an industrial technology that uses metal powder or a mixture of metal powder and non-metal powder as a raw material, after forming and sintering, to produce metal materials, composite materials and various types of products. Iron powder is the most important metal powder in the powder metallurgy industry, and it is used in the largest amount in powder metallurgy production. How to give full play to the value of iron slag and avoid the waste of resources has become a technical problem. Contents of the invention [0003] Aiming at the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C5/02C21B13/00
CPCC21B13/0066C25C5/02Y02P10/134
Inventor 刘力强
Owner 徐州润锋新材料有限公司
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