A method of producing foam glass by using cold-rolling sludge and waste glass

A foam glass and waste glass technology, which is applied in the field of comprehensive utilization of metallurgical resources and preparation of foam glass materials, can solve the problems of complex operation, high modifier cost, and long process cycle, and achieve simple operation, low cost, and short process cycle Effect

Active Publication Date: 2014-01-22
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main raw material of traditional foam glass is waste glass. Although tailings, red mud, fly ash, etc. can be used as auxiliary raw materials, the content of waste glass is more than 60%. The traditional foam glass preparat

Method used

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  • A method of producing foam glass by using cold-rolling sludge and waste glass
  • A method of producing foam glass by using cold-rolling sludge and waste glass
  • A method of producing foam glass by using cold-rolling sludge and waste glass

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Example 1: Put the cleaned waste glass, loess, and bluestone in an oven at 110°C to dry, and put the cold-rolled sludge, waste glass, loess, bluestone, and iron red into a ball mill tank to crush and ball-mill them to 100 mesh; Mix 30% of cold rolling sludge, 48.5% of cullet, 18.3% of loess, 2.4% of iron red, and 0.9% of bluestone according to the mass percentage. The total mass of the above batch is 100%, plus 1.5% Mix polystyrene balls and 20% tap water evenly; fill the mixture into a mold and put it directly into a foaming furnace at 1120°C, keep it warm for 10 minutes, and cool it to 500°C at a cooling rate of 5-20°C / min. ~600°C, cool down to below 50°C with the furnace to get foam glass.

[0031] The performance of the foam glass prepared in the present embodiment 1: the bulk density is 0.34g / cm 3 , the volume water absorption rate is 2.72%, the flexural strength is 2.32MPa, and the compressive strength is 2.68MPa.

Embodiment 2

[0032] Example 2: Put the cleaned waste glass, loess, and bluestone in an oven at 110°C to dry, put the cold-rolled sludge, waste glass, loess, bluestone, and iron red into a ball mill tank to crush and ball-mill them to 100 mesh; Mix 35.0% cold rolling sludge, 45.0% broken glass powder, 17.0% loess, 2.2% iron red, and 0.8% bluestone according to the mass percentage. The total mass of the above batch is 100%, plus 1.5% Polystyrene balls, 20% tap water, mix evenly; fill the mixture into the mold and put it directly into a foaming furnace at 1120°C, keep it warm for 15min, and cool it to 500°C at a cooling rate of 5-20°C / min ~600°C, cool down to below 50°C with the furnace to get foam glass.

[0033] The performance of the foam glass prepared in the present embodiment 2: the bulk density is 0.24g / cm 3 , the volume water absorption rate is 0.35%, the flexural strength is 1.07MPa, and the compressive strength is 0.81MPa.

Embodiment 3

[0034] Example 3: Put the cleaned waste glass, loess, and bluestone in an oven at 110°C to dry, and put the cold-rolled sludge, waste glass, loess, bluestone, and iron red into a ball mill pot for crushing and ball milling to 100 mesh; Mix 35.0% cold rolling sludge, 45.0% broken glass powder, 17.0% loess, 2.2% iron red, and 0.8% bluestone according to the mass percentage. The total mass of the above batch is 100%, plus 1.5% Mix polystyrene balls and 20% tap water evenly; fill the mixture into a mold and put it directly into a foaming furnace at 1140°C, keep it warm for 15 minutes, and cool it to 500°C at a cooling rate of 5-20°C / min. ~600°C, cool down to below 50°C with the furnace to get foam glass.

[0035] The performance of the foam glass prepared in the present embodiment 3: the bulk density is 0.18g / cm 3, the volume water absorption rate is 0.89%, the flexural strength is 0.60MPa, and the compressive strength is 0.36MPa.

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Abstract

The invention relates to a method of producing foam glass by using cold-rolling sludge and waste glass, and belongs to the fields of metallurgy resource integrate utilization and preparation of foam glass materials. The technical scheme includes adding 30-40% by weight of the cold-rolling sludge, 40-50% by weight of the waste glass, 12-25% by weight of loess, 0.5-1% by weight of bluestone and 2-3% by weight of iron oxide red into a ball milling jar, and mixing; mixing the batch material, 1%-2% of polystyrene balls and 15%-20% of tap water uniformly, and loading into a mold; and placing the mold in a foaming furnace having a temperature of 1100-1140 DEG C, and maintaining the temperature for 10-30 min to prepare the foam glass. According to the method, the cold-rolling sludge and the waste glass are used as the main raw materials, and a proper amount of other waste and natural materials are added to prepare the foam glass, thus recovering the cold-rolling sludge effectively. The raw materials are low in cost and wide in source. The preparation technology omits a preheating process, and has a short technology period, simple operation, capability of environment protection, and good social benefit and economic benefit.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of metallurgical resources and preparation of foam glass materials, in particular to a foam glass using cold rolling sludge as raw material and a preparation method thereof. Background technique [0002] Industrial waste refers to solid waste discharged during industrial production. China's industrial sectors discharge hundreds of millions of tons of waste slag every year, among which metallurgy, energy, mining, chemical industry and other sectors have the largest emissions. Disposing of industrial waste slag requires a lot of manpower, material and financial resources; stockpiling waste slag takes up a lot of land . Metallurgical waste, which accounts for a large proportion of industrial waste, includes blast furnace slag, steel slag, non-ferrous metal slag, dust, sludge, waste chips, etc., which seriously pollute the environment. Environmental issues have become the focus of people's a...

Claims

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Application Information

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IPC IPC(8): C03C11/00C03C6/02
Inventor 张梅郭敏肖亮朱何可彭犇
Owner UNIV OF SCI & TECH BEIJING
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