Refractory brick produced from aluminum ash and preparation process thereof
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A preparation process and technology of refractory bricks, which are applied in the field of building materials to achieve high-efficiency utilization, significant social benefits, and the effect of solving fluorine pollution
Pending Publication Date: 2022-02-08
淄博天之润生态科技有限公司
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a refractory brick produced by aluminum ash and its preparation process, on the one hand, it solves the problem of environmental protection waste di
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Embodiment 1
[0028] The preparation technology of the refractory brick produced by described aluminum ash comprises the following steps:
[0029] (1) 73% aluminum ash, 20% high-temperature clay and 7% molding binder are mixed uniformly to obtain a refractory brick mixture;
[0030] (2) Fill the refractory brick mixture in the metal brick mold of the press, and press 35MPa once to form;
[0031] (3) The pressed bricks are dried at 110°C for 9 hours, then fired at 1190°C for 80 minutes, and cooled to obtain the finished brick.
Embodiment 2
[0033] The preparation technology of the refractory brick produced by described aluminum ash comprises the following steps:
[0034] (1) 78% aluminum ash, 17% high-temperature clay and 5% molding binder are mixed uniformly to obtain a refractory brick mixture;
[0035] (2) Fill the refractory brick mixture in the metal brick mold of the press, and press 35MPa once to form;
[0036] (3) The pressed brick adobe is dried at 110°C for 9 hours, then fired at 1200°C for 60 minutes, and cooled to obtain the product.
Embodiment 3
[0038] The preparation technology of the refractory brick produced by described aluminum ash comprises the following steps:
[0039] (1) 85% aluminum ash, 10% high-temperature clay and 5% forming binder are mixed uniformly to obtain a refractory brick mixture;
[0040] (2) Fill the refractory brick mixture in the metal brick mold of the press, and press 35MPa once to form;
[0041] (3) The pressed brick adobe is dried at 110°C for 9 hours, then fired at 1150°C for 90 minutes, and cooled to obtain the product.
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Abstract
The invention belongs to the technical field of building materials, and particularly relates to a refractory brick produced from aluminum ash and a preparation process thereof. The refractory brick produced from the aluminum ash is prepared by taking the aluminum ash as a main raw material and adding a high-temperature binding agent and a forming binding agent as auxiliary materials. According to the invention, the aluminum ash in the electrolytic aluminum industry can be effectively consumed, on one hand, the problem of environment-friendly discharged waste disposal of electrolytic aluminum enterprises is solved, on the other hand, efficient utilization of resources is realized, on the other hand, a refractory material product with a good market prospect is provided, and the economic benefit, the environment-friendly benefit and the social benefit are very remarkable; meanwhile, the problem of fluorine pollution of the aluminum ash can be well solved, fluorine and aluminum-silicon-calcium in the aluminum ash form fluorosilicate glass with stable chemical properties at high temperature, and fluorine is not dissolved out any more.
Description
technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a refractory brick produced from aluminum ash and a preparation process thereof. Background technique [0002] Aluminum ash is the fly ash formed after the condensation of aluminum-containing gaseous volatiles volatilized from the electrolytic cell during the production of electrolytic aluminum. It contains a large amount of aluminum oxide (60-75%), aluminum nitride, silicon oxide, calcium oxide, and a small amount of metal. Aluminum, and a small amount of fluorosilicate, etc. At present, aluminum ash is defined as hazardous waste. Aluminum ash in the electrolytic aluminum industry has become an environmental protection problem that restricts the development of the industry. If aluminum ash is not resolved, it will directly affect the sustainable development of the electrolytic aluminum industry. Aluminum ash is defined as dangerous waste mainly because it...
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