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Titanium-reinforced corundum refractory material and preparation method thereof

A technology of corundum series and corundum, which is applied in the field of refractory materials, can solve the problems of expensive metal titanium and high cost of composite materials, and achieve the effects of simple and easy implementation, improved smelting efficiency, and high economic value

Active Publication Date: 2020-10-09
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But TiO 2 and metal titanium are relatively expensive, and the cost of the composite material is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: A method for preparing a titanium-reinforced corundum-based material. For raw materials containing Fe 2 o 3 The rutile concentrate with a mass percentage of 10% is smelted to obtain ferro-titanium alloy, and slag is obtained after liquid-solid separation; the slag is subjected to electromelting treatment at a temperature of 2100° C. and an electromelting time of 4 hours to obtain slag with further reduced metal inclusions; That is, titanium reinforced corundum material.

[0025] The material consists of Al 2 o 3 ,TiO 2 , MgO, Fe 2 o 3 , CaO, SiO 2 , Na 2 Composition of O, of which: Al 2 o 3 The content is 82.19%; TiO 2 The content of MgO is 13.45%; the content of MgO is 1.52%; Fe 2 o 3 The content of CaO is 0.50%; the content of CaO is 0.93%; SiO 2 The content is 0.62%; Na 2 The content of O is 0.23%, and the rest is burnt. The apparent porosity is 4.8%, and the bulk density is 3.8g / cm 3 .

Embodiment 2

[0026] Embodiment 2: the difference between production technology and embodiment 1 is:

[0027] When the slag is electromelted, 5% Fe is added 2 o 3 .

[0028] The material consists of Al 2 o 3 ,TiO 2 , MgO, Fe 2 o 3 , CaO, SiO 2 , Na 2 Composition of O, of which: Al 2 o 3 The content is 80.19%; TiO 2 The content of Fe is 11.26%; Fe 2 o 3 The content of MgO is 5.22%; the content of MgO is 1.20%; the content of CaO is 1.03%; SiO 2 The content is 0.34%; Na 2 The content of O is 0.18%, and the rest is burnt. The apparent porosity is 5.3%, and the bulk density is 3.7g / cm 3 .

Embodiment 3

[0029] Embodiment 3: the difference between production technology and embodiment 1 is:

[0030] When the slag is electromelted, 5% MgO is added.

[0031] The material consists of Al 2 o 3 ,TiO 2 , MgO, Fe 2 o 3 , CaO, SiO 2 , Na 2 Composition of O, of which: Al 2 o 3 The content is 77.34%; TiO 2 The content of MgO is 14.30%; the content of MgO is 6.24%; Fe 2 o 3 The content of CaO is 0.67%; the content of CaO is 0.53%; SiO 2 The content is 0.54%; Na 2 The content of O is 0.17%, and the rest is burnt. The apparent porosity is 4.2%, and the bulk density is 3.9g / cm 3 .

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Abstract

The invention relates to a titanium-reinforced corundum material and a preparation method thereof, and belongs to the field of refractory materials. According to the product, the titanium-reinforced corundum synthetic raw material is prepared from slag obtained after rutile concentrate is reduced by metallic aluminum through regulation and control of chemical components and physical components. The content of Fe in used rutile minerals is high, obtained metal is ferrotitanium alloy, and metal inclusions in slag are reduced through electric smelting. Main chemical components (expressed by positive-valence oxide content) of the product are Al2O3 and TiO2, and the product contains a small amount of MgO, Fe2O3, CaO, SiO2 and Na2O. The main crystalline phase is corundum, and the secondary crystalline phase is titanium trioxide, and other phases are spinel and calcium hexaluminate. The apparent porosity is less than or equal to 10%; and the volume density ranges from 3.5 g / cm < 3 > to 3.9 g / cm < 3 >. The product realizes efficient utilization of slag, and a refractory material with high performance and high application value is obtained. Meanwhile, the material has environmental protection significance and economic value.

Description

technical field [0001] The invention relates to preparing a novel refractory material, in particular to a method for preparing a titanium-enhanced corundum refractory material, which belongs to the field of refractory materials. Background technique [0002] Metal titanium has important applications in many fields such as aerospace, petroleum, chemical industry, and metallurgy because of its advantages such as low density, high specific strength, and good corrosion resistance. There are many ways to prepare it, the common ones are titanium halide reduction decomposition method, titanium compound electrolysis method, and titanium oxide reduction method. Among them, the titanium oxide reduction method is in TiO 2 In the enrichment material, metals more active than titanium are added to realize the deoxidation of titanium oxide. Metal aluminum has a wide source and low price, and is often selected as a reducing agent in the production process of titanium metal. By reacting T...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/107C04B35/622C22C1/02C22C14/00C22B34/12
CPCC04B35/107C04B35/622C04B35/62204C04B35/66C04B2235/3201C04B2235/3206C04B2235/3208C04B2235/3232C04B2235/3272C04B2235/3418C04B2235/77C22B34/1218C22C1/02C22C14/00
Inventor 李勇郑清瑶孙加林薛文东蒋朋
Owner UNIV OF SCI & TECH BEIJING
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