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Dense Mullite Aggregate
Mezulianík, Tomáš ; Tvrdík,, Lukáš (referee) ; Nevřivová, Lenka (advisor)
Refractory aggregate based on aluminosilicate are manufactured by firing clays, claystones or shales. The firing takes place in rotary or blast furnaces. However, when manufacturing the special refractory materials, we can not do it without special aggregate with higher content of Al2O3. Theoretical part of this thesis is aimed on the description of mineral mullite and mullite refractory aggregate, their method of production and raw material basis. The research of mullite aggregate on the market and their application in the refractory industry. In conclusion of the study, an experiment was performed for the production of special aggregate with increased alumina content according to the proposed prescriptions
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Production of refractory aggregate in blast furnaces
Zemánek, David ; Tvrdík,, Lukáš (referee) ; Nevřivová, Lenka (advisor)
Firing of refractory aggregate takes place in blast or rotary furnaces. Raw materials for firing are refractory clays, claystones and shales. Sorting and sieving is performed before firing, in which occurs to formation of the fine clay. This waste is not useful for firing in common way in blast furnaces. Possibility, how to solve this problem, seems to be briquetting of fine clays. This method of proccesing fine clays brings with it new possibilities in refractory aggregate production. By adding a suitable correction material, such as mullite powder, special refractory grog with required properties can be produced on customers wishes.
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Dense Mullite Aggregate
Mezulianík, Tomáš ; Tvrdík,, Lukáš (referee) ; Nevřivová, Lenka (advisor)
Refractory aggregate based on aluminosilicate are manufactured by firing clays, claystones or shales. The firing takes place in rotary or blast furnaces. However, when manufacturing the special refractory materials, we can not do it without special aggregate with higher content of Al2O3. Theoretical part of this thesis is aimed on the description of mineral mullite and mullite refractory aggregate, their method of production and raw material basis. The research of mullite aggregate on the market and their application in the refractory industry. In conclusion of the study, an experiment was performed for the production of special aggregate with increased alumina content according to the proposed prescriptions
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Production of refractory aggregate in blast furnaces
Zemánek, David ; Tvrdík,, Lukáš (referee) ; Nevřivová, Lenka (advisor)
Firing of refractory aggregate takes place in blast or rotary furnaces. Raw materials for firing are refractory clays, claystones and shales. Sorting and sieving is performed before firing, in which occurs to formation of the fine clay. This waste is not useful for firing in common way in blast furnaces. Possibility, how to solve this problem, seems to be briquetting of fine clays. This method of proccesing fine clays brings with it new possibilities in refractory aggregate production. By adding a suitable correction material, such as mullite powder, special refractory grog with required properties can be produced on customers wishes.
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