Low-melting-point porous foam stone and preparation method thereof

A technology with porous foam and low melting point, which can be used in chemical instruments and methods, ceramic products, and other household appliances, and can solve problems such as low strength, high energy consumption, and high temperature

Inactive Publication Date: 2018-09-18
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the material has low strength and is mainly used for functional materials, such as wall insulation, water filtration, etc. At the same time, th

Method used

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  • Low-melting-point porous foam stone and preparation method thereof
  • Low-melting-point porous foam stone and preparation method thereof
  • Low-melting-point porous foam stone and preparation method thereof

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preparation example Construction

[0029] The invention relates to a low melting point porous foam stone and a preparation method thereof. The two major solid wastes in the water glass ceramics industry that will destroy the ecological environment, pollute the groundwater quality and occupy a large amount of land resources - waste glass and polished brick waste are cleaned, dried, crushed, ground, and screened to obtain two corresponding types. powder, then the above two powders are proportioned according to different mass fractions, and then a small amount of low-temperature frit powder and industrial starch (or materials such as carbon powder, ammonium bicarbonate, PMMA microspheres) are added. The low-temperature frit powder plays the role of fluxing and reducing the sintering temperature during the sintering process; the polymer flocculant and industrial starch contained in the waste slag of polished bricks are easy to foam under high-temperature calcination and can play the role of foaming agent. Add the a...

Embodiment 1

[0034] (1) Material preparation: dehydrate and air-dry the discarded polishing waste slag from the ceramic factory, crush it with a jaw crusher, send it to the Raymond mill for grinding to obtain 20-50um polished brick waste powder, and then send it to a special ash storage tank for standby; After the waste glass is cleaned and dried, use the same process to obtain 50-100um waste glass powder, which is also sent to a special ash storage tank for standby.

[0035] (2) Ingredients: the weight percentages of various raw materials are as follows: 20% of polished brick waste slag powder, 55% of waste glass powder; 20% of low-temperature frit powder, and 5% of industrial starch.

[0036] (3) Mixing: Send the above prepared materials to the ball mill and mix for 30 minutes to obtain the batch materials.

[0037] (4) Sintering: Add the batch material to a heat-resistant steel mold with a refractoriness greater than 1000°C and coated with a release agent, and burn it in a muffle furnac...

Embodiment 2

[0040](1) Material preparation: dehydrate and air-dry the discarded polishing waste slag from the ceramic factory, crush it with a jaw crusher, send it to the Raymond mill for grinding to obtain 20-50um polished brick waste powder, and then send it to a special ash storage tank for standby; After the waste glass is cleaned and dried, use the same process to obtain 50-100um waste glass powder, which is also sent to a special ash storage tank for standby.

[0041] (2) Ingredients: the weight percentages of various raw materials are as follows: 30% of polished brick waste slag powder, 45% of waste glass powder; 15% of low-temperature frit powder, and 10% of a mixture of carbon powder and foamable resin.

[0042] (3) Mixing: Send the above prepared materials to the ball mill and mix for 25 minutes to obtain the batch materials.

[0043] (4) Sintering: Add the batch material to a heat-resistant steel mold with a refractoriness greater than 1000°C and coated with a release agent, an...

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Abstract

The invention relates to a low-melting-point porous foam stone and a preparation method thereof. The low-melting-point porous foam stone is prepared by utilizing two solid wastes--waste glass and waste polished brick slags in cement, glass and ceramic industries as main raw materials and adding a small amount of a low-temperature frit and foaming agent through a proper heat treatment system. According to the invention, 90% of raw materials are derived from industrial waste residues, so waste is turned into treasure; meanwhile, no pollution to the environment is generated in the processes of production and application, so the unity of environmental protection and energy conservation is realized; and an effective method for resourceful reutilization of industrial solid wastes and solving ofenvironmental pollution of the industrial solid wastes is obtained. The foam stone produced by using the preparation method provided by the invention has the advantages of lightweight, porousness, high porosity, fine and uniform pores, good adsorption and water retention, good air permeability, and fireproof and heat-resistant performances. The preparation process for the foam stone provided by the invention has the advantages of simple operation process, low cost, applicability to large-scale industrial production, and significant economic benefit and environmental protection benefit.

Description

technical field [0001] The invention belongs to the technical field of solid waste recycling, and in particular relates to a low melting point porous foam stone and a preparation method thereof. Background technique [0002] Waste glass mainly comes from industrial waste glass (such as flat glass, glass fiber, etc.) and daily waste glass (such as utensil glass, light bulb glass, etc.). In the general production and processing of flat glass, the corner waste cut from the original glass sheet accounts for 15%-25% of the total production, while the waste glass produced by regular shutdown accounts for 5%-10% of the total ; In addition, the waste glass products obtained under abnormal working conditions due to sudden fluctuations in the operating temperature of the melting furnace, changes in the quality of raw materials or mixing ratios, and worker errors also account for a part of the proportion. Glass waste silk is a kind of waste slag produced during the production and proc...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B32/00C02F1/00C09K17/02C04B111/40
CPCC02F1/00C04B32/005C04B38/0645C04B2111/40C09K17/02C04B14/22C04B18/0427C04B24/38
Inventor 常鹰谌援魏志顺董仕节王辉虎刘阳冯婷刘子雄周欢
Owner HUBEI UNIV OF TECH
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