Aluminum silicon carbide castable for hot metal bottles and preparation method thereof

A technology for aluminum silicon carbide and molten iron cans, which is applied in the field of aluminum silicon carbide castables for molten iron cans and the field of preparation thereof, can solve the problems of high manufacturing cost, difficulty in environmental protection treatment of waste silicon carbide saggers, and high processing costs, so as to improve the sintering strength , The effect of good density and low impurity content

Inactive Publication Date: 2019-04-12
WUGANG REFRACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to environmental protection requirements, it is necessary to carry out environmental protection treatment or reuse of waste silicon carbide saggers. The environmental protection treatment of waste silicon carbide saggers is difficult and the treatment cost is high; waste silicon carbide saggers need to undergo strict treatment processes before they can be reused as raw materials in Production of silicon carbide saggars, the manufacturing cost is relatively high

Method used

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  • Aluminum silicon carbide castable for hot metal bottles and preparation method thereof
  • Aluminum silicon carbide castable for hot metal bottles and preparation method thereof
  • Aluminum silicon carbide castable for hot metal bottles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of aluminum silicon carbide casting material for ladle, it is made of the raw material of following weight part:

[0033]

[0034] The aluminum-silicon-based aggregate consists of the following raw materials in parts by weight:

[0035]

[0036]

[0037] The waste silicon carbide sagger powder is obtained by crushing and finely grinding waste silicon carbide sagger powder; the particle size of the waste silicon carbide sagger powder is ≤180 mesh.

[0038] Al in the calcium aluminate cement 2 o 3 The CaO content is ≥69%, and the CaO content is 26-30%.

[0039] The α-Al 2 o 3 Al in micropowder 2 o 3 Content ≥98.5%, Fe 2 o 3 Content ≤ 0.3%; the SiO 2 SiO in fine powder 2 Content ≥ 92%, Fe 2 o 3 Content≤1.8%.

[0040] The organic fibers are polypropylene fibers with a length of 3-5 mm.

[0041] The above-mentioned method for preparing aluminum silicon carbide castables for molten iron tanks comprises the following steps: first, aluminum silicon...

Embodiment 2

[0043] A kind of aluminum silicon carbide casting material for ladle, it is made of the raw material of following weight part:

[0044]

[0045] The aluminum-silicon aggregate is made of the following raw materials in parts by weight:

[0046]

[0047]

[0048] The waste silicon carbide sagger powder is obtained by crushing and finely grinding waste silicon carbide sagger powder; the particle size of the waste silicon carbide sagger powder is ≤180 mesh.

[0049] Al in the calcium aluminate cement 2 o 3 The CaO content is ≥69%, and the CaO content is 26-30%.

[0050] The α-Al 2 o 3 Al in fine powder 2 o 3 Content ≥98.5%, Fe 2 o 3 Content ≤ 0.3%; the SiO 2 SiO in fine powder 2 Content ≥ 92%, Fe 2 o 3 Content≤1.8%.

[0051] The organic fibers are polypropylene fibers with a length of 3-5mm.

[0052] The above-mentioned method for preparing aluminum silicon carbide castables for molten iron tanks comprises the following steps: first, aluminum silicon-based a...

Embodiment 3

[0054] A kind of aluminum silicon carbide casting material for ladle, it is made of the raw material of following weight part:

[0055]

[0056] The aluminum-silicon-based aggregate is selected from one or more of clay clinker, mullite, and bauxite clinker;

[0057]

[0058] The waste silicon carbide sagger powder is obtained by crushing and finely grinding waste silicon carbide sagger powder; the particle size of the waste silicon carbide sagger powder is ≤180 mesh.

[0059] Al in the calcium aluminate cement 2 o 3 The CaO content is ≥69%, and the CaO content is 26-30%.

[0060] The α-Al 2 o 3 Al in micropowder 2 o 3 Content ≥98.5%, Fe 2 o 3 Content ≤ 0.3%; the SiO 2 SiO in fine powder 2 Content ≥ 92%, Fe 2 o 3 Content≤1.8%.

[0061] The organic fibers are polypropylene fibers with a length of 3-5mm.

[0062] The above-mentioned method for preparing aluminum silicon carbide castables for molten iron tanks comprises the following steps: first, aluminum sili...

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Abstract

The invention discloses an aluminum silicon carbide castable for hot metal bottles and a preparation method thereof. The aluminum silicon carbide castable for hot metal bottles is prepared from the following raw materials by weight: 65-88 parts of aluminum-silicon aggregate, 3-15 parts of waste silicon carbide sagger powder, 3-10 parts of calcium aluminate cement, 2-5 parts of alpha-Al2O3 micropowder, 2-5 parts of SiO2 micropowder, 0.1-0.2 part of sodium tripolyphosphate, and 0.05-0.1 part of organic fiber. The aluminum-silicon aggregate is selected from one or more of clay clinker, mullite and bauxite clinker. The waste silicon carbide sagger powder is prepared by crushing waste silicon carbide sagger and performing fine grinding treatment. The aluminum silicon carbide castable for hot metal bottles provided by the invention contains waste silicon carbide sagger powder, thus not only reducing the manufacturing cost, but also improving the compactness, sinterability and iron slag resistance of the castable.

Description

technical field [0001] The invention relates to the technical field of aluminum silicon carbide castables, in particular to an aluminum silicon carbide castable for molten iron tanks and a preparation method thereof. Background technique [0002] In the iron and steel metallurgy industry, the hot metal tank is an important equipment for the collection and transportation of molten iron in the blast furnace and the iron mixing in the steel plant. Aluminum silicon carbide castables for hot metal tanks are mainly used for castables along the edge of hot metal tanks and bottom castables for hot metal tanks. In order to improve the slag resistance and erosion resistance of castables, no more than 15% of silicon carbide raw materials are generally added to traditional iron ladle aluminum silicon carbide castables. When using low-grade silicon carbide raw materials with SiC content ≤ 90%, it cannot Good anti-slag performance; when using mid-range silicon carbide raw materials with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/77C04B2235/96
Inventor 周芬徐志华蔡长秀易碧辉秦常杰姚亚双
Owner WUGANG REFRACTORY CO LTD
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