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Method for producing fused magnesite by virtue of high-power electric arc furnace

A technology of electric arc furnace and fused magnesium, which can be applied to products, magnesia, reagents, etc., can solve the problems of low yield and high energy consumption

Inactive Publication Date: 2014-12-10
营口东吉科技(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to propose a method for producing fused magnesium with a high-power electric arc furnace, to achieve simple and easy steps, aiming at the problems of low yield and high energy consumption of the above-mentioned existing method for producing fused magnesium in an electric arc furnace, Advantages of high yield and low energy consumption

Method used

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Examples

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Embodiment 1

[0025] This embodiment discloses a method for producing fused magnesia in a high-power electric arc furnace, which includes melting magnesite ore in an electric arc furnace to obtain fused magnesite, wherein the particle size of the magnesite ore is 50-70mm.

[0026] The furnace neck height ratio of the electric arc furnace used in this embodiment is 1, and the furnace body neck height ratio is 1, which can effectively balance the output and quality of the smelted product fused magnesia; the electric arc furnace in this embodiment is a high-power electric arc furnace, specifically With a power of 4000KVA, the electric arc furnace can melt materials quickly, which not only saves energy and protects the environment, but also improves the yield; the electrodes of the electric arc furnace use high-power graphite electrodes, which can carry higher current and voltage; The performance is better than that of graphite electrodes, with low electrical conductivity, high bulk density, hig...

Embodiment 2

[0029] This embodiment discloses a method for producing fused magnesia in a high-power electric arc furnace, which includes placing magnesite powder pellets in an electric arc furnace and melting them to obtain fused magnesite, wherein the particle size of the magnesite powder pellets is 70-80mm .

[0030] The furnace neck height ratio of the electric arc furnace used in this embodiment is 0.9, which can effectively balance the output and quality of the smelted product fused magnesia; the electric arc furnace in this embodiment is a high-power electric arc furnace, and the specific power is 5000KVA. The material can be melted quickly, and the yield of finished products is improved while saving energy and protecting the environment; the electrodes of the electric arc furnace adopt high-power graphite electrodes to meet the requirements of smelting time, smelting intensity and load power. The lifting of the electric arc furnace electrode adopts the method of alternating lifting ...

Embodiment 3

[0033] This embodiment discloses a method for producing fused magnesia in a high-power electric arc furnace, which includes placing magnesite powder pellets in an electric arc furnace and melting them to obtain fused magnesite, wherein the particle size of the magnesite powder pellets is 60-70mm .

[0034] The furnace neck height ratio of the electric arc furnace used in this embodiment is 1.1, which can effectively balance the output and quality of the smelted product fused magnesia; the electric arc furnace in this embodiment is a high-power electric arc furnace, and the specific power is 3000KVA. The material can be melted quickly, and the yield of finished products is improved while saving energy and protecting the environment; the electrodes of the electric arc furnace adopt high-power graphite electrodes to meet the requirements of smelting time, smelting intensity and load power. The lifting of the electric arc furnace electrode adopts the method of alternating lifting ...

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Abstract

The invention provides a method for producing fused magnesite by virtue of a high-power electric arc furnace. Magnesite ore or a magnesite powder pellet is put into the electric arc furnace to smelt, so as to obtain fused magnesite, wherein the neck ratio of the furnace body of the electric arc furnace is 0.8-1.2; the power of the electric arc furnace is greater than or equal to 3000KVA; the feeding mode of the magnesite ore or the magnesite powder pellet is electric arc furnace edge feeding assisted with electric arc furnace top feeding; and the electric arc furnace electrode lifting adopts lifting-descending alternating method. The method for producing the fused magnesite by virtue of the high-power electric arc furnace provided by the invention has the advantages of simple and scientific steps, high yield and low energy consumption. The invention also discloses optimal raw ore granularity, material distribution mode and feeding depth, therefore, carbon dioxide gas generated in the smelting process can be timely eliminated, and ejecting from the furnace is avoided.

Description

technical field [0001] The invention relates to magnesite smelting technology, in particular to a method for producing fused magnesium in a high-power electric arc furnace. Background technique [0002] China is one of the countries with relatively rich magnesite resources in the world, and the distribution is relatively concentrated. Among them, Liaoning Province has rich magnesite reserves, accounting for 85% of the national total, ranking first in the country. my country's magnesite industry has developed into a unique resource-based industry with an annual output of 15 million tons of magnesia and its products, ranking first in the world. Fused magnesite smelted with magnesite as raw material also plays a pivotal role in the magnesia material industry. It is the basic raw material of many magnesite materials and has a decisive impact on the performance of the material. [0003] my country's magnesite smelting process still stays at the international level in the 1970s a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/06
CPCY02P20/141
Inventor 崔俊峰孙挺王林山崔薇薇何占高刘希洋崔毅崔军么革王玉红
Owner 营口东吉科技(集团)有限公司
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