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A continuous casting tundish cover castable and preparation method thereof

A technology of castables and coverings, which is applied in the field of refractory materials, can solve the problems that the tailings of titanium extraction cannot be reused, the raw material index fluctuates violently, and the cost is high, so as to achieve good social benefits, reduce baking costs, and increase the yield of finished products Effect

Active Publication Date: 2018-12-11
北京利尔高温材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a castable for continuous casting tundish cover and its preparation method, which solves the problems in the prior art that the castable for tundish cover is high in cost, the index of raw materials fluctuates violently, and the titanium tailings cannot be reused.

Method used

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  • A continuous casting tundish cover castable and preparation method thereof
  • A continuous casting tundish cover castable and preparation method thereof
  • A continuous casting tundish cover castable and preparation method thereof

Examples

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Embodiment 1

[0031] This embodiment relates to a continuous casting tundish cover castable, which consists of the following materials in parts by weight:

[0032] 30 kg of black aluminum sand with a particle size of 5 mm ≤ particle size 2 o 3 Content is 69%, TiO 2 The content is 14%, the CaO content is 8%, the water absorption rate is 1.5%, and the particle density is 3.45g / cm 3 .

[0033] High alumina bauxite fine powder 17kg; Al in described high alumina bauxite fine powder 2 o 3 The content is 85%, Fe 2 o 3 Content is 1.6%, TiO 2 The content is 3.6%, K 2 O or Na 2 The O content is 0.4%, the water absorption rate is 3%, and the particle density is 3.2g / cm 3 , the particle size is 0.074 ~ 0.083mm.

[0034] Microsilica powder 2.6kg; SiO in the microsilica powder 2 The content is 92%, Na 2 O content is 1.2%, Fe 2 o 3 The content is 0.6%, the particle size is 0.03mm, and the sieve residue is 2%.

[0035] Cement 4kg; said cement Al 2 o 3 Content is 70%, SiO 2 The content is ...

Embodiment 2

[0039] This embodiment relates to a continuous casting tundish cover castable, which consists of the following materials in parts by weight:

[0040] 35 kg of black aluminum sand with a particle size of 5 mm ≤ particle size 2 o 3 Content is 71%, TiO 2 The content is 13%, the CaO content is 9%, the water absorption rate is 1.3%, and the particle density is 3.48g / cm 3 .

[0041] High alumina bauxite fine powder 18kg; Al in described high alumina bauxite fine powder 2 o 3 The content is 86%, Fe 2 o 3 Content is 1.4%, TiO 2 Content is 3.8%, K 2 O or Na 2 The O content is 0.3%, the water absorption rate is 3%, and the particle density is 3.3g / cm 3 , the particle size is 0.074 ~ 0.083mm.

[0042] Microsilica powder 2kg; SiO in the microsilica powder 2 The content is 95%, Na 2O content is 1.5%, Fe 2 o 3 The content is 1.1%, the particle size is 0.045mm, and the sieve residue is 3%.

[0043] Cement 3kg; said cement Al 2 o 3 Content is 69%, SiO 2 The content is 0.8%, ...

Embodiment 3

[0048] This embodiment relates to a continuous casting tundish cover castable, which consists of the following materials in parts by weight:

[0049] 30kg of black aluminum sand with 5mm≤particle size<15mm, 15kg of black aluminum sand with 3mm≤particle size<5mm, 15kg of black aluminum sand with 1mm≤particle size<3mm, 15kg of black aluminum sand with 0.083mm≤particle size<1mm; Powder 10kg, silica powder 5kg, cement 3kg, stainless steel fiber 1kg, polypropylene fiber 0.1kg, sodium hexametaphosphate 0.1kg.

[0050] The raw materials described in this embodiment are the same as in Example 1.

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Abstract

The invention discloses a continuous casting tundish cover pouring material and a preparation method thereof, and belongs to the technical field of refractory materials. The continuous casting tundish cover pouring material is prepared through the following raw materials in parts by weight: 60 to 80 parts of black aloxite, 10 to 30 parts of fine high alumina bauxite powder, 2 to 5 parts of silica powder, 2 to 5 parts of cement, 0 to 3 parts of stainless steel fiber, 0 to 0.2 part of detonation inhibitor, and 0.1 to 0.4 part of water reducing agent. The invention also discloses the preparation method of the continuous casting tundish cover pouring material. According to the continuous casting tundish cover pouring material prepared by the method, the cost can be greatly reduced; in addition, the tundish cover product can be quickly roasted, so that the cost of roasting can be decreased, and as a result, the economic benefit can be effectively increased for an enterprise.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a continuous casting tundish cover castable and a preparation method thereof. Background technique [0002] With the increasingly difficult steel situation, the profits of steel companies have dropped sharply, and most steel plants are operating at a loss. At present, steel companies are tapping their potential internally to reduce production costs. Therefore, the price of refractory materials for continuous casting has also dropped, greatly reducing Business revenue and profit margin. [0003] At present, the price of refractory materials for steel has been on a downward trend. At the same time, the price of refractory raw materials for steel refractories has been rising. Under this dual pressure, refractory companies are also constantly developing new raw materials to replace traditional high Refractory raw materials such as bauxite and magnesia. [0004] In rece...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/111C04B35/66
CPCB22D11/111C04B35/66
Inventor 张建敏胡玲军赵伟刘丽任林司小拴何烁李朝云曹仁锋车晓梅刘美荣于九利赵现华张晓波黄健王伟伟郭钰龙
Owner 北京利尔高温材料股份有限公司