A method for preparing foam glass from solid waste

A foam glass and waste glass technology, applied in glass forming, glass manufacturing equipment, manufacturing tools, etc., can solve the problem of failure to achieve co-processing of multiple types of solid waste, failure to use solid waste containing organic substances, and low capacity for solid waste co-utilization. problems, to achieve the effect of anti-seepage maintenance costs, improve economic and environmental benefits, and no post-maintenance costs

Active Publication Date: 2020-11-17
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid waste used in this method is single, and the glass-ceramics needs to be insulated, which leads to high energy consumption and high production costs.
[0004] The existing foam glass preparation process has a low solid waste synergistic utilization ability, can only use a certain type of solid waste, does not realize the co-processing of various types of solid waste, does not use solid waste containing organic matter as a foaming agent, and needs additional foaming agent, high production cost and low environmental benefit

Method used

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  • A method for preparing foam glass from solid waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Oil sludge, sludge, fly ash, waste glass and quartz sand are used as raw materials, and their contents are 60.0%, 5.0%, 5.0%, 5.0% and 25.0% respectively. Mix the proportioned raw materials evenly to obtain a mixture, the particle size is less than 2.00 mm, and the dispersion is greater than 55%. After the mixture is heated to 700°C to melt and foam, it is quickly lowered to 500°C to obtain foam glass, and then slowly cooled to room temperature to obtain foam glass products. The thermal conductivity of foam glass is 0.01 W / (m K); the flame retardant performance is tested according to GB / T 5464-2010, the temperature rise in the furnace is less than 50°C, the mass loss rate is less than 50%, and the continuous burning time is less than 20s.

Embodiment 2

[0035] Oil sludge, sludge, fly ash, waste glass and quartz sand are used as raw materials, and their contents are 5.0%, 60.0%, 5.0%, 5.0% and 25.0% respectively. Mix the proportioned raw materials evenly to obtain a mixture, the particle size is less than 1.80mm, and the dispersion is greater than 50%. After the mixture is heated to 1500°C to melt and foam, it is quickly lowered to 700°C to obtain foam glass, and then slowly cooled to room temperature to obtain foam glass products. The thermal conductivity of foam glass is 0.11W / (m K); the flame retardant performance is tested according to GB / T 5464-2010, the temperature rise in the furnace is less than 45°C, the mass loss rate is less than 45%, and the continuous burning time is less than 14s.

Embodiment 3

[0037] Oil sludge and fly ash are used as raw materials, and their contents are 5.0% and 95.0% respectively. Mix the proportioned raw materials evenly to obtain a mixture, the particle size is less than 1.80mm, and the dispersion is greater than 70%. After the mixture is heated to 1400°C to melt and foam, it is quickly lowered to 650°C to obtain foam glass, and then slowly cooled to room temperature to obtain foam glass products. The thermal conductivity of foam glass is 0.06W / (m K); the flame retardant performance is tested according to GB / T 5464-2010, the temperature rise in the furnace is less than 47°C, the mass loss rate is less than 34%, and the continuous burning time is less than 17s.

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Abstract

The invention belongs to the technical field of solid waste treatment and resource recovery, and discloses a method for preparing foam glass from solid waste. According to the method, the solid wasteserves as a raw material and is matched, mixed and melted, foam bodies formed by gas generated when the raw materials are heated, and the foam bodies are cooled to obtain the foam glass. The foam glass has the advantages of low heat conduction coefficient and flame resistance and can be used for building heat retaining fireproof materials. According to the method, solid waste is harmlessly treatedand utilized in a high-valued manner, and the method had the advantages of wide raw material source and low production cost.

Description

technical field [0001] The invention belongs to the technical field of solid waste disposal and resource utilization, and discloses a method for preparing foam glass from solid waste. Background technique [0002] Foam glass is a high-porosity uniform closed-cell material formed by foaming after high-temperature melting. Foam glass has the characteristics of low density, low water absorption, small thermal expansion coefficient and high mechanical strength. It can be used as inorganic heat preservation and flame retardant materials. Strong, anti-seepage and no post-maintenance costs. [0003] The core process of preparing foam glass is to make the softened glass body evenly foam and stabilize the bubbles before finally forming. The preparation process of foam glass is different due to different raw materials, foaming agents, foam stabilizers and modifiers. Chinese invention patent (CN200810012110.4) discloses a method of preparing foam glass with titanium-containing blast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B19/08C03C11/00C03C6/02C03C6/00
CPCC03B19/08C03C1/002C03C11/007
Inventor 张深根范文迪刘波
Owner UNIV OF SCI & TECH BEIJING
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