Method for producing insulating brick used for oxidation furnace by using glass fiber

Abstract

The invention discloses a method for producing an insulating brick used for an oxidation furnace by using a glass fiber. The method comprises the following steps: (1) mixing raw materials consisting of, on a dry basis, 55 to 60 parts by mass of a crushed glass fiber, 20 to 30 parts by mass of fly ash and 6 to 10 parts by mass of quicklime, wherein the fly ash has silica content of no less than 40% and iron mineral content of no greater than 15% and the quicklime has active calcium oxide content of no less than 80% and magnesium oxide content of no greater than 2%; (2) mixing the above-mentioned raw materials with stirring so as to obtain slurry and subjecting the slurry to foaming at 60 to 80 DEG C for 30 to 40 min; (3) subjecting foamed slurry prepared in the step (2) to steam curing at normal pressure so as to obtain a green body and cutting the green body to corresponding sizes; and (4) subjecting the green body prepared in the step (3) to steam curing at a pressure of 0.8 to 0.9 Mpa for 18 to 22 h and sprinkling a soap surfactant on the green body every 0.6 h during steam curing so as to obtain a finished insulating brick product used for the oxidation furnace. According to the invention, the usage amount of an attapulgite waste material is great, energy conservation and environmental protection are realized, the problem of environmental pollution caused by stockpiling treatment of attapulgite waste materials is alleviated, and a novel raw material is provided for a hollow brick.

Description

technical field [0001] The invention relates to the field of new building materials, in particular to a method for preparing insulating bricks for oxidation furnaces using glass fibers. Background technique [0002] With the rapid development of social economy and attapulgite industry, attapulgite industrial waste is increasing day by day, which not only puts great pressure on the urban environment, but also limits the development of urban economy and the sustainable development of attapulgite industry, so attapulgite industrial waste Processing and utilization are very important. [0003] For a long time, the comprehensive utilization of attapulgite waste has been a worldwide problem. Although a lot of research has been done on the comprehensive utilization of attapulgite waste at home and abroad, most of them have not been implemented in industry due to various technical and economic reasons. [0004] To sum up, it has been reported that using attapulgite waste as auxilia...

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Problems solved by technology

[0003] For a long time, the comprehensive utilization of attapulgite waste has been a worldwide problem. Although a lot of research has been done on the comprehensive utilization of attapulgite waste at home and abroad, due to various technical and economic reasons, most of them have not been put into industrial realization.

[0004] In summary, there have been reports of using attapulgite waste as auxiliary raw materials to produce cement, wall bricks, and road materials, but there have been no reports about using attapulgite waste as the main raw material for the production of aerated blocks

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