Foam glass and preparation method thereof

A technology of foam glass and desulfurized gypsum, which is applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., and can solve problems such as solid waste accumulation

Active Publication Date: 2021-11-09
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of this application is to provide a kind of foam glass and its preparation method, to propose a new recycling approach of graphitized dust collection powder, to solve the problem of solid waste accumulation caused by graphitization furnace dust collection powder, and to realize Reuse of desulfurized gypsum

Method used

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  • Foam glass and preparation method thereof
  • Foam glass and preparation method thereof
  • Foam glass and preparation method thereof

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preparation example Construction

[0035] According to a typical embodiment of the present invention, a kind of preparation method of cellular glass is provided, and described method comprises:

[0036] S1. Desulfurization gypsum is subjected to free water treatment to obtain desulfurization gypsum powder;

[0037] As an optional embodiment, the dehydration treatment should ensure that the desulfurized gypsum powder becomes uniform. Generally speaking, the water content of the desulfurized gypsum powder is less than or equal to 3% by mass.

[0038] S2. Mix the desulfurized gypsum, graphitized dust-collecting powder and additives to obtain a mixed powder. In order to ensure uniform foaming, the mixed material must be uniform; in parts by mass, the composition of the mixed powder includes: 2-6 parts of desulfurized gypsum, 89-97 parts of graphitized dust collection powder and 1-5 parts of additives;

[0039] The role of graphitized dust collection powder is as a raw material for preparation, controlling 89-97 pa...

Embodiment 1

[0055] A preparation method of cellular glass, the method comprising:

[0056] The desulfurization gypsum W1 is dehydrated to become anhydrous desulfurization gypsum W11. Mix dust collection powder W22, anhydrous desulfurized gypsum W11 and additive W23 according to 2 parts, 96 parts and 2 parts; uniformly mix in a mixer to obtain a mixture W3, and put the mixed material in a mold for preliminary compression molding , and then put it into a corundum crucible coated with vaseline or other volatile organic substances and carbon powder. Slowly raise the temperature to 450°C at a rate of 5-7°C / min for preheating to obtain hot mix W5, and keep it warm for 1h. The temperature is raised at a heating rate of 15°C / min, and the foaming stage is carried out at 1250°C for about 1 hour. Rapidly cool down to 600°C at a speed of 10°C / min to stabilize the foam, keep warm for 30 minutes, turn off the power, and cool to room temperature with the furnace for annealing.

Embodiment 2

[0058] A preparation method of cellular glass, the method comprising:

[0059] The desulfurization gypsum W1 is dehydrated to become anhydrous desulfurization gypsum W11. Mix dust collection powder W22, anhydrous desulfurized gypsum W11 and additive W23 according to 3 parts, 95 parts and 2 parts; uniformly mix in a mixer to obtain a mixture W3, and put the mixed material in a mold for preliminary compression molding , and then put it into a corundum crucible coated with vaseline or other volatile organic substances and carbon powder. Slowly raise the temperature to 500°C at a rate of 5-7°C / min for preheating to obtain hot mix W5, and keep it warm for 1h. The temperature is raised at a heating rate of 15°C / min, and the foaming stage is carried out at 1350°C for about 1 hour. Rapidly cool down to 650°C at a speed of 10°C / min to stabilize the foam, keep warm for 30 minutes, turn off the power, and cool to room temperature with the furnace for annealing.

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Abstract

The invention particularly relates to foam glass and a preparation method thereof, and belongs to the technical field of comprehensive utilization of dust collection powder.The method comprises the following steps: allowing desulfurized gypsum to be subjected to free water removal treating to obtain desulfurized gypsum powder; mixing the desulfurized gypsum, graphitized dust collection powder and an additive to obtain mixed powder; placing the mixed powder in a container to be subjected to compression molding to obtain a material blank ; preheating the material blank to obtain a preheated material blank; and heating, foaming, foam stabilizing and annealing the hot blank to obtain the foam glass. The foam glass is prepared by mixing and utilizing the dust collection powder generated by a graphitization furnace and desulfurized gypsum, a new scheme for preparing the foam glass is provided, meanwhile, the problem that solid waste is difficult to store is solved, the problem of pollution generated by the graphitization furnace is solved, and the purpose of comprehensive utilization of resources is achieved.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of dust collection powder, and in particular relates to foam glass and a preparation method thereof. Background technique [0002] Foam glass is a kind of inorganic material filled with connected or closed pores formed by melting, foaming, cooling, etc., with pure raw material or waste glass as the main raw material, foaming agent, co-solvent and accelerator as additives. Because of its small thermal conductivity, low thermal expansion coefficient, no water absorption, no moisture permeability, no combustion, wide operating temperature range, no insect damage, strong corrosion resistance, etc., it can be called a heat insulation, absorption Acoustic, moisture-proof and fire-proof building materials and decoration materials can be applied in the fields of medium-temperature thermal insulation, thermal insulation of building interior and exterior walls, waterproof and moisture-proo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C11/00C03C6/00C03B19/06C03B19/08
CPCC03C11/007C03C1/002C03B19/06C03B19/08
Inventor 尹大伟荆全海陈开斌刘建军李若楠孙丽贞罗钟生王珣杜婷婷崔梦倩刘彤罗英涛
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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