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Sub-white corundum and production method thereof

A sub-white corundum and production method technology, which is applied in the field of sub-white corundum and its production, can solve the problems of unfavorable popularization and application of corundum refractory materials, shortage of white corundum raw materials, low alumina content, etc., and achieve obvious economic and social benefits , low cost, high content effect

Active Publication Date: 2013-03-27
焦作市山阳亚白刚玉厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The white corundum raw material in the existing market is in short supply, and the cost is high and expensive, which is not conducive to the popularization and application of corundum refractory materials
Brown corundum is only suitable for abrasives and abrasive tools. In the refractory industry, because of its low alumina content, many impurities, and brownish red color, it has great defects and deficiencies in the application of high-grade refractory materials.

Method used

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  • Sub-white corundum and production method thereof
  • Sub-white corundum and production method thereof
  • Sub-white corundum and production method thereof

Examples

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Embodiment 1

[0051] Embodiment 1: as figure 1 As shown, a kind of sub-white corundum is made through the following formula and steps:

[0052] 1) Anthracite and bauxite containing 85% by weight of aluminum oxide are respectively crushed, iron filings are sorted and sieved, and then the crushed anthracite and bauxite are mixed with iron filings to form a mixed batch, wherein The weights of anthracite, bauxite and iron filings are respectively: 9500 kg of bauxite, 200 kg of iron filings, and 300 kg of anthracite;

[0053] 2) Put the mixed ingredients in 1) into an electric arc furnace for smelting. The smelting time is 48 hours. The temperature is controlled as follows: from the 0th to the 1st hour, the temperature is increased from 0 degrees Celsius to 1100 degrees Celsius, and from the first to the second hour The temperature is increased from 1100 degrees Celsius to 1100 degrees Celsius. The temperature is increased to 2000 degrees Celsius, the temperature is increased from 2000 degrees ...

Embodiment 2

[0057] Embodiment 2: as figure 1 As shown, a kind of sub-white corundum is made through the following formula and steps:

[0058] 1) Anthracite and bauxite containing 85% by weight of aluminum oxide are respectively crushed, iron filings are sorted and sieved, and then the crushed anthracite and bauxite are mixed with iron filings to form a mixed batch, wherein The weights of anthracite, bauxite and iron filings are respectively: 9500 kg of bauxite, 200 kg of iron filings, and 300 kg of anthracite;

[0059] 2) Put the mixed ingredients in 1) into an electric arc furnace for smelting. The smelting time is 48 hours, and the temperature is controlled as follows: the temperature increases from 0 degrees Celsius to 1100 degrees Celsius in the 0th to the 1st hour, and the temperature in the 1st to the 2nd hour is changed from Increase from 1100 degrees Celsius to 2000 degrees Celsius, and increase the temperature from 2000 degrees Celsius to 2200 degrees Celsius in the second to th...

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Abstract

The invention relates to sub-white corundum and a production method thereof. The production method comprises the following steps: separately crushing anthracite and bauxite containing 85wt% of aluminum trioxide, mixing with scrap iron to obtain a mixed material, and smelting the mixed material in an electric arc furnace for 48 hours while increasing the temperature from 0 DEG C to 1100 DEG C at 0-1st hour, increasing the temperature from 1100DEG C to 2000 DEG C at 1st-2nd hour and increasing the temperature from 2000 DEG C to 2200 DEG C at 2nd-3rd hour; naturally cooling for 58 hours after smelting, then adding water, cooling for 36 hours, carrying out cooling crystallization to obtain a frit, and grinding the frit to obtain a sub-white corundum block; and carrying out secondary calcining or pickling to obtain two types of products. The method provided by the invention has the advantages of low cost and high practicality, can be used for completely eliminating the cracking and powdering phenomena of a corundum-based refractory, and achieving obvious economical benefits and social benefits.

Description

technical field [0001] The invention relates to a wear-resistant and refractory material and a production method thereof, in particular to a sub-white corundum and a production method thereof. Background technique [0002] The production of sub-white corundum is based on high-alumina bauxite as the main raw material. Based on the fact that the affinity of aluminum for oxygen is greater than that of impurities such as iron, silicon, and titanium, it is obtained by reduction smelting, desiliconization, refining, oxygen blowing, and secondary chemical reaction technology. Products similar to white corundum have fewer impurities than brown corundum, higher alumina content, and a color similar to white corundum, hence the name sub-white corundum. First of all, it can replace expensive white corundum, as an abrasive and high-grade refractory material in smelting and mechanical industries, alleviate the long-term shortage of industrial alumina resources in my country, and make coru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/10C04B35/622
Inventor 李泉升宋志明
Owner 焦作市山阳亚白刚玉厂
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