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Chrome corundum-titanium brick and production method thereof

A chrome corundum titanium brick and a production method technology, applied in the field of refractory materials, can solve the problems of inability to meet use requirements, poor slag erosion resistance and thermal shock stability, and achieve good slag erosion resistance and strong slag erosion resistance. , the effect of promoting sintering

Active Publication Date: 2014-07-02
锦州集信高温材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the refractory materials produced by the existing technology have the problems of poor slag erosion resistance and thermal shock stability, and cannot meet the requirements for the use of non-ferrous metallurgical furnace slag line parts and special parts of the reaction zone.

Method used

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  • Chrome corundum-titanium brick and production method thereof
  • Chrome corundum-titanium brick and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The composition of chrome corundum titanium brick is:

[0035] Chrome corundum 900kg;

[0036] High titanium slag 100kg;

[0037] Lime 80kg;

[0038] Al in the chrome corundum 2 o 3 The mass percentage content is 82% ~ 84%, Cr 2 o 3 The mass percentage content is 12%~14%, Al 2 o 3 and Cr 2 o 3 The mass percentage content of the total amount is ≥96%; the TiO in the high titanium slag 2 The mass percentage content is 90% to 94%; the CaO mass percentage content in the lime is ≥80%.

[0039] Concrete preparation steps are as follows:

[0040] a. Raw materials and processing

[0041] Crushing the chrome corundum to a particle size of ≤5mm; finely grinding the high-titanium slag to a particle size of 180 mesh; finely grinding the lime to a particle size of 180 mesh;

[0042] b. to sieve

[0043] The crushed chrome corundum is screened and classified, and the classified particle sizes are 5mm-3mm, 3mm-1mm, 1mm-0mm granular materials and 180-mesh and 325-mesh po...

Embodiment 2

[0051] The composition of chrome corundum titanium brick is:

[0052] Chrome corundum 995kg;

[0053] Titanium dioxide 5kg;

[0054] Lime 10kg;

[0055] Al in the chrome corundum 2 o 3 The mass percentage content is 82% ~ 84%, Cr 2 o 3 The mass percentage content is 12%~14%, Al 2 o 3 and Cr 2 o 3 The mass percentage content of the total amount is ≥96%; the TiO in the titanium dioxide 2 The mass percentage content is ≥ 98%; the CaO mass percentage content in the lime is ≥ 80%.

[0056] Concrete preparation steps are as follows:

[0057] a. Raw materials and processing

[0058] Crushing the chrome corundum to a particle size of ≤5mm; taking titanium dioxide with a particle size of 325 mesh; finely grinding the lime to a particle size of 180 mesh;

[0059] b. to sieve

[0060] The crushed chrome corundum is screened and classified, and the classified particle sizes are 5mm-3mm, 3mm-1mm, 1mm-0mm granular materials and 180-mesh and 325-mesh powders;

[0061] c. slee...

Embodiment 3

[0068] The composition of chrome corundum titanium brick is:

[0069] Chrome corundum 990kg;

[0070] High titanium slag 50kg;

[0071] Lime 50kg;

[0072] Al in the chrome corundum 2 o 3 The mass percentage content is 82% ~ 84%, Cr 2 o 3 The mass percentage content is 12%~14%, Al 2 o 3 and Cr 2 o 3 The mass percentage content of the total amount is ≥96%; the TiO in the high titanium slag 2 The mass percentage content is 90% to 94%; the CaO mass percentage content in the lime is ≥80%.

[0073] Concrete preparation steps are as follows:

[0074] a. Raw materials and processing

[0075] Crushing the chrome corundum to a particle size of ≤5mm; finely grinding the high-titanium slag to a particle size of 180 mesh; finely grinding the lime to a particle size of 180 mesh;

[0076] b. to sieve

[0077] The crushed chrome corundum is screened and classified, and the classified particle sizes are 5mm-3mm, 3mm-1mm, 1mm-0mm granular materials and 180-mesh and 325-mesh pow...

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Abstract

The invention provides a production method of a chrome corundum-titanium brick. The production method comprises the steps of mixing chrome corundum materials with grain sizes of 5-3mm, 3-1mm, 1-0mm, 180 meshes and 325 meshes, adding phosphoric acid, stirring the materials uniformly, and putting the materials for not less than 24 hours; adding titanium dioxide or high titanium slag to the chrome corundum mixture subjected to ageing to be mixed, then adding lime and mixing the materials uniformly, thus obtaining a mixture; then adding aluminium dihydrogen phosphate to carry out mulling; carrying out compression molding and high-temperature firing, thus obtaining the chrome corundum-titanium brick. The production method has the advantages that the production method is simple in process, is low in cost, can improve the thermal shock stability of the product, and ensures a good slag corrosion resistance effect; calcium titanate is generated by adopting titanium oxide and calcium oxide at high temperature, the melting point is as high as 1850 DEG C, and the slag corrosion resistance capacity is strong; the thermal shock stability of the produced chrome corundum-titanium brick is not less than seven times, so that the chrome corundum-titanium brick can meet the using requirements of special parts of non-ferrous metallurgical furnaces.

Description

technical field [0001] The invention belongs to the field of refractory materials, in particular to a chrome corundum titanium brick and a production method thereof. Background technique [0002] The working environment of refractory materials for non-ferrous metal kilns is harsh, especially in the slag line and reaction zone, and the requirements for refractory materials are relatively high. However, the refractory materials produced by the prior art have the problems of poor slag erosion resistance and thermal shock stability, and cannot meet the requirements for the use of non-ferrous metallurgical furnace slag line parts and special parts of the reaction zone. [0003] Chromium corundum is produced by electric fusion of industrial alumina and chromium oxide green, or aluminum chromium slag, a by-product of the production of metal chromium by the aluminothermic method, after high temperature treatment, alumina becomes a high temperature solution and forms with part of unr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 曹杨宋建义田刚
Owner 锦州集信高温材料有限公司
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