Low-cost Fe-Co alloy preparation method

An iron-cobalt alloy, low-cost technology, applied in the field of preparation of low-cost iron-cobalt alloy, can solve the problems of high price and difficulty in popularization and application, and achieve the effects of low cost, improved slag alkalinity, and high yield strength

Inactive Publication Date: 2019-06-18
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its high price, it is currently mostly used in high-tech fields such as aerospace and other high-tech fields that have certain requirements for lightweight power devices, and it is difficult to widely popularize and apply it.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of low-cost iron-cobalt alloy, concrete steps are as follows:

[0023] (1) Take 30% high cobalt slag, 45% Bayer process red mud and 25% coke powder according to the weight percentage, and set aside;

[0024] (2) Coarsely crush high cobalt slag into particles below 10mm;

[0025] (3) The coarsely crushed high-cobalt slag particles, Bayer process red mud and coke powder were ball-milled for 8 hours with a ball mill, and passed through a 200-mesh sieve after ball milling;

[0026] (4) Put the sieved raw materials into a three-dimensional mixer and mix them for 10 hours to obtain a mixture for later use;

[0027] (5) Add 1.25vol% sodium carboxymethyl cellulose aqueous solution to the mixture, and then make pellets through a ball-disc machine. The average particle size of the green balls is 10mm, and dry them in a blast drying oven at 70°C for 4 hours to obtain dry green balls. ;

[0028] (6) Send the dried raw pellets to a vacuum electric arc...

Embodiment 2

[0031] A kind of preparation method of low-cost iron-cobalt alloy, concrete steps are as follows:

[0032] (1) Take 40% of high cobalt slag, 40% of Bayer process red mud and 20% of coke powder according to the weight percentage, and set aside;

[0033] (2) Coarsely crush high cobalt slag into particles below 10mm;

[0034] (3) The coarsely crushed high-cobalt slag particles, Bayer process red mud and coke powder were ball-milled for 10 hours with a ball mill, and passed through a 200-mesh sieve after ball milling;

[0035] (4) Put the sieved raw materials into a three-dimensional mixer and mix them for 10 hours to obtain a mixture for later use;

[0036] (5) Add 1.25vol% sodium carboxymethyl cellulose aqueous solution to the mixture, and then pelletize through a ball-and-disc machine to obtain green pellets with an average particle size of 15mm, and dry them in a blast drying oven at 80°C for 6 hours to obtain dry pellets. raw ball;

[0037] (6) Send the dried raw pellets t...

Embodiment 3

[0040] A kind of preparation method of low-cost iron-cobalt alloy, concrete steps are as follows:

[0041] (1) Take 35% of high cobalt slag, 42% of Bayer process red mud and 23% of coke powder according to the weight percentage, and set aside;

[0042] (2) Coarsely crush high cobalt slag into particles below 10mm;

[0043] (3) The coarsely crushed high-cobalt slag particles, Bayer process red mud and coke powder were ball-milled for 8.5 hours with a ball mill, and passed through a 200-mesh sieve after ball milling;

[0044] (4) Put the sieved raw materials into a three-dimensional mixer and mix them for 10 hours to obtain a mixture for later use;

[0045] (5) Add 1.25vol% sodium carboxymethyl cellulose aqueous solution to the mixture, and then make pellets through a ball-and-disc machine. The average particle size of the green pellets is 18mm. Dry them in a blast drying oven at 72°C for 4.5 hours to obtain dried raw pellets. ball;

[0046] (6) Send the dried raw pellets to ...

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Abstract

The invention relates to a low-cost Fe-Co alloy preparation method and belongs to the technical field of soft magnetic materials. The low-cost Fe-Co alloy preparation method comprises the following steps of selecting high-cobalt slag, red mud and coke powder as raw materials; conducting coarse crushing on the high-cobalt slag; conducting ball milling on the high-cobalt slag subjected to coarse crushing, the red mud and the coke powder respectively and then conducting sieving; mixing the sieved raw materials in a blender mixer to obtain a mixture; adding a sodium carboxymethyl cellulose aqueoussolution to the mixture and then conducting pelletizing and drying; and conducting carbon thermal reduction smelting and conducting magnetic separation on an obtained reduction product to obtain an Fe-Co alloy. According to the low-cost Fe-Co alloy preparation method, the Bayer process red mud and the high-cobalt slag are used as the main raw materials, the soft magnetic alloy with the very highsaturated magnetic induction intensity is produced, is suitable for various types of complicated, miniature and multifunctional high-power soft magnetic devices and has the characteristics that the technological process is simple, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of manufacturing soft magnetic materials, and in particular relates to a method for preparing a low-cost iron-cobalt alloy. Background technique [0002] The global alumina output has exceeded 100 million tons, and the annual alumina production in my country has reached about 50 million tons. Red mud is a solid waste discharged during the process of extracting alumina in the aluminum industry, and its output is also increasing. For every ton of alumina produced, approximately 1 to 1.2 tons of red mud are produced. Red mud not only has the characteristics of large combined chemical alkali content and is difficult to remove, but also contains a large amount of Fe 2 o 3 , A1 2 o 3 And CaO and other effective ingredients, if not properly handled and disposed of, not only will cause great harm to the environment and human body, but also cause waste of active ingredients in red mud. my country's cobalt ore r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/10C22C33/04C22B23/02C22B7/00
CPCY02P10/20
Inventor 刘海涛王维孙开刘海洋李玉芝
Owner HENAN UNIV OF SCI & TECH
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