Foamed ceramic prepared by using polishing mud as base material and preparation method thereof

Abstract

The invention relates to foamed ceramic prepared by using polishing mud as a base material and a preparation method thereof, the foamed ceramic is formed by stacking and sintering a plurality of sheets, the base materials of the sheets are the polishing mud, a foam stabilizer containing alumina and expanded perlite micro powder, a sheet binder is arranged between the sheets, and the sheet binder comprises perlite powder. According to the foamed ceramic, a plurality of sheets are mutually overlapped to form a blank through a blank binding agent, the blank is put into a kiln for naked blank firing, the blank binding agent promotes mutual reaction of the sheets at a high temperature, the sheets form an integral structure, and the foaming ceramic is uniformly expanded and kept in a certain shape in the foaming process by utilizing the foam stabilizer; the collapse caused by huge deformation of the foamed ceramic green body in the foaming process is prevented, and the high-temperature foaming of the foamed ceramic under the condition of no mold frame is met.

Description

technical field [0001] The application relates to a foamed ceramic prepared by using polishing mud as a base material and a preparation method. Background technique [0002] Foamed ceramics generally use solid waste such as perlite tailings, polished porcelain slag, gold tailings and granite saw mud as the main raw materials, introduce appropriate amount of inorganic substances, and adopt advanced production technology to foam at high temperature. Due to the structural characteristics of closed pores, foamed ceramics have the functions of heat insulation, sound insulation and noise reduction, and waterproof and moisture-proof at room temperature. [0003] The existing domestic production technology of foamed ceramics is generally filled with foamed ceramic granulated powder in the mold frame composed of cordierite-mullite or silicon carbide and other refractory materials as the bottom plate and baffle plate, and passed through aluminum silicate refractory fiber paper. The g...

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Problems solved by technology

[0003] The existing domestic production technology of foamed ceramics is generally filled with foamed ceramic granulated powder in the mold frame composed of cordierite-mullite or silicon carbide and other refractory materials as the bottom plate and baffle plate, and passed through aluminum silicate refractory fiber paper. The granulation powder is separated from the mold frame, and the mold frame carries the granulation powder together into the kiln for firing. The mold frame kiln furniture used has a high specific gravity and a large weight, and will absorb a large amount of heat during the firing process. The proportion accounts for more than half of the total heat consumption, and the natural gas in the foamed ceramic firing section of the traditional process unit is about 100-110m 3 , the energy consumption is huge, resulting in high production costs

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