Castable refractory for high-precision aluminum alloy melt external refining and using method

A refractory castable and out-of-furnace refining technology, applied in the field of refractory materials, can solve the problems of high price, unacceptable to users, and inability to meet refining high-precision aluminum alloys, etc., and achieves the effect of large adaptability and convenient use.

Active Publication Date: 2009-07-08
成都蜀冶新材料有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problem with this product is that it will bond with the aluminum alloy liquid at high temperature, and will release silicon and iron in the refractory material into the aluminum alloy liquid, which cannot meet the requirements of refining high-precision aluminum alloy.
The price is too high to be accepted by users if it is used in the refining device outside the common aluminum alloy liquid furnace

Method used

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  • Castable refractory for high-precision aluminum alloy melt external refining and using method
  • Castable refractory for high-precision aluminum alloy melt external refining and using method

Examples

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Effect test

Embodiment

[0053] High-precision aluminum alloy molten furnace external refining refractory castable, composed of aggregate, powder and additives, of which:

[0054] A. The aggregate consists of high alumina bauxite clinker with a particle size of 3-5mm accounting for 20% of the aggregate and powder mass; sub-white corundum with a particle size of 1-3mm accounting for 35% of the aggregate and powder mass. 0.5 ~ 1mm accounted for 15% of the sum of aggregate and powder mass sub-white corundum;

[0055] B. In the powder, α-Al203 powder accounts for 5% of the sum of aggregate and powder mass, sub-white corundum powder accounts for 5% of the sum of aggregate and powder mass, and titanium dioxide accounts for the sum of aggregate and powder mass 5%, barium sulfate powder accounts for 5% of the sum of aggregate and powder mass, CA70 pure calcium aluminate cement accounts for 10% of aggregate and powder mass,

[0056] C. The admixture sodium hexametaphosphate accounts for 0.15% of the sum of th...

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Abstract

The invention discloses a refractory castable material for external refining of a high refined aluminum alloy liquid, which consists of aggregate, powder and an additive, wherein the aggregate consists of bauxite chamotte and sub-white corundum; the powder consists of alpha-Al2O3, sub-white corundum powder, CA70 pure calcium aluminate cement, titanium pigment and barium sulfate; and the additive consists of sodium hexametaphosphate and water. The refractory castable material overcomes the defects in the prior art that the refractory castable material can be glued with the aluminum alloy liquid at a high temperature and impurities such as silicon and iron in refractory materials can be released into the aluminum alloy liquid, and can guarantee that refractory linings cannot be cracked, do not increase silicon and iron, are not glued with aluminum during external refining of the high refined aluminum alloy liquid, and have cheap price, convenient use and large applicable range.

Description

technical field [0001] The invention relates to a refractory material and its use method, in particular to a refractory inner lining for a high-precision aluminum alloy solution furnace refining device and its use method. Background technique [0002] In the production of aluminum alloy, it is often necessary to heat it to ~1000°C to melt it into aluminum alloy liquid. After the smelted and synthesized aluminum alloy liquid is released from the smelting furnace, it must be refined outside the furnace to remove harmful gases and impurities. These refining units need to be made of special refractory materials. Aluminum alloy liquid, especially high-precision aluminum alloy liquid, must be refined outside the furnace, and the refractory lining of its installation has special requirements: no sticking to aluminum, no cracking, no increase in silicon, and no increase in iron. CN101007730 published on 2007.08.01, titled "corundum-spinel refractory material for refining aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C22C1/06C22C21/00
Inventor 张命荣
Owner 成都蜀冶新材料有限责任公司
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