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Method for preparing foamed ceramic material by completely utilizing industrial solid wastes

A technology of solid waste and foamed ceramics, applied in the field of foamed ceramics, can solve the problems of high production costs, achieve the effects of improving utilization, reducing production costs, solving environmental pollution and endangering human health

Pending Publication Date: 2021-01-12
内蒙古建亨能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main production method of foamed ceramics is to add foaming agent and various mineral raw materials, and the production cost is relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] First, according to the weight ratio: fly ash 30%, coal gangue 15%, tailings 20%, polishing slag 35%, mix to form a mixture, put the mixture into a ball mill for wet grinding, and after reaching the required particle size, spray it with a spray tower Granules, to obtain pellet raw materials, distribute the prepared pellet raw materials evenly on a boron plate according to a certain thickness, and then fire them. The firing temperature is 1120°C-1190°C, and the firing time is 5-6 hours. , gradually lowered to normal temperature, and the firing was completed. During the whole process, a small amount of silicon carbide contained in the polishing slag was used as a foaming agent.

[0030] The industrial solid waste fly ash used refers to the fly ash of a power plant, and its chemical composition is: SiO2 55%, Al2O3 21%, CaO 7%, K2O 1%, Na2O 1%, Fe2O3 6%, MgO 2 %, TiO2 1%; using industrial solid waste, coal gangue refers to coal gangue in a certain area, and its chemical com...

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PUM

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Abstract

The invention discloses a method for preparing a foamed ceramic material by completely utilizing industrial solid wastes, which comprises the following steps: drying and screening industrial solid wastes such as fly ash, coal gangue, tailings, polishing slag and the like, carrying out ball milling and mixing on various solid wastes according to a weight ratio, and carrying out spraying granulationby utilizing a spray tower to obtain apellet raw material; and, uniformly spreading the foamed ceramic raw material subjected to powder spraying granulation on a shelf board, firing the foamed ceramic raw material spread on the shelf board in the step S4 in a kiln at the temperature of 1,120 DEG C to 1,190 DEG C for 5-6 hours, gradually cooling to the temperature of less than or equal to 100 DEGC, taking out of the kiln, cutting the fired foamed ceramic board, forming, grading, packaging and warehousing. According to the invention, the problem of completely utilizing the industrial solid wastes to prepare the foamed ceramic is solved, a new scheme is provided for treatment and utilization of the industrial solid wastes, the production cost is reduced, and energy conservation and emissionreduction are realized.

Description

technical field [0001] The invention relates to the technical field of foamed ceramics, in particular to a method for completely utilizing industrial solid waste to prepare foamed ceramic materials. Background technique [0002] Industrial solid waste refers to solid waste such as mining waste rock, mineral processing tailings, fuel waste residue, chemical production and smelting waste residue generated in industrial, transportation and other production activities, also known as industrial waste residue or industrial garbage. The use of industrial solid waste as raw materials to produce foamed ceramic materials will help realize the comprehensive utilization of industrial waste, promote energy conservation and emission reduction, and reduce enterprise costs. Foamed ceramic materials are mainly used in insulation materials such as partition boards, which help reduce energy consumption and have broad application prospects. [0003] At present, the main production method of fo...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B33/132C04B33/135
CPCC04B38/02C04B33/1352C04B33/1328C04B33/132Y02P40/60
Inventor 马川陈玉宝董芝浩
Owner 内蒙古建亨能源科技有限公司