Thermal-insulation cotton prepared from iron making hot slag and waste incineration fly ash, and preparation method thereof

A technology for waste incineration fly ash and thermal insulation cotton, which is applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of inability to utilize hot slag sensible heat, deterioration of working environment, slag accumulation atmosphere, water and soil pollution, etc. Realize the effect of harmless and resource utilization

Active Publication Date: 2019-09-27
CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The output of ironmaking hot slag in my country is relatively large, but at present most of its treatment adopts the water quenching method, which not only cannot use the sensible heat of hot slag, but also causes a lot of waste of water resources. In addition, the slag is also harmful to the atmosphere, water and soil Caused serious pollution and deteriorated the working environment

Method used

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  • Thermal-insulation cotton prepared from iron making hot slag and waste incineration fly ash, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An embodiment of the present invention provides a thermal insulation cotton made of iron-making hot slag and waste incineration fly ash, including iron-making hot slag, waste incineration fly ash and auxiliary materials with a mass ratio of 1:0.2:0.03.

[0028] Among them, the auxiliary materials include sodium oxide and silicon dioxide with a mass ratio of 1:5.

[0029] The preparation method of above-mentioned insulation cotton:

[0030] 1) Introduce hot ironmaking slag at a temperature of 1500°C into the electric melting and tempering furnace, then add waste incineration fly ash and auxiliary materials into the electric melting and tempering furnace in solid form, and melt and mix at 1450°C;

[0031] 2) The melt is subjected to centrifugal blowing and pendulum laying to obtain a cotton board, and the cotton board is solidified, reformed and cut to obtain the insulation cotton.

Embodiment 2

[0033] An embodiment of the present invention provides a thermal insulation cotton made of iron-making hot slag and waste incineration fly ash, including iron-making hot slag, waste incineration fly ash and auxiliary materials with a mass ratio of 1:0.2:0.03.

[0034] Among them, the auxiliary materials include sodium oxide and silicon dioxide with a mass ratio of 1:5.

[0035] The preparation method of above-mentioned insulation cotton:

[0036] 1) Introduce hot ironmaking slag at a temperature of 1500°C into the electric melting and tempering furnace, then mix the waste incineration fly ash and auxiliary materials evenly and melt them at 1200°C, then add the molten mixture of waste incineration fly ash and auxiliary materials into the Melting and mixing at 1450°C in an electric melting and tempering furnace;

[0037] 2) The melt is subjected to centrifugal blowing and pendulum laying to obtain a cotton board, and the cotton board is solidified and reformed to obtain the ins...

Embodiment 3

[0039] An embodiment of the present invention provides a thermal insulation cotton made of iron-making hot slag and waste incineration fly ash, including iron-making hot slag, waste incineration fly ash and auxiliary materials with a mass ratio of 1:0.2:0.03.

[0040] Among them, the auxiliary materials include sodium oxide and silicon dioxide with a mass ratio of 1:5.

[0041] The preparation method of above-mentioned insulation cotton:

[0042] 1) Introduce hot ironmaking slag at a temperature of 1500°C into the electric melting and tempering furnace, then mix the waste incineration fly ash and auxiliary materials evenly and preheat at 800°C, and then put the preheated waste incineration fly ash and auxiliary materials into The preheated mixture is added to the electric melting and tempering furnace, and melted and mixed at 1450°C;

[0043] 2) The melt is subjected to centrifugal blowing and pendulum laying to obtain a cotton board, and the cotton board is solidified and re...

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Abstract

The invention belongs to the technical field of thermal insulation cotton, and more specifically relates to a thermal-insulation cotton prepared from iron making hot slag and waste incineration fly ash, and a preparation method thereof. The thermal-insulation cotton comprises iron making hot slag, waste incineration fly ash, and an auxiliary material at a mass ratio of 1:0.1-0.3:0.01-0.02. The preparation method comprises following steps: 1, iron making hot slag is introduced into an electric melting tempering furnace, and waste incineration fly ash and the auxiliary material are added for high temperature melting mixing; 2, an obtained melt is subjected to centrifugation blowing, and swing hammer cotton spreading to obtain a cotton plate, and the cotton plate is subjected to curing and reforming so as to obtain the thermal-insulation cotton. According to the preparation method, the thermal-insulation cotton is prepared using the heat energy in iron making hot slag, so that iron making hot slag waste energy high efficiency utilization is realized; high temperature treatment is adopted to realize decomposition of dioxin in waste incineration fly ash, separation of a part of heavy metal chlorides and enrichment in secondary fly ash; silicate co-molten substances are formed by a small amount of heavy metal elements left in the melt and other substances, and stabilization is realized; and calcium, silicon, oxygen, and aluminium elements in waste incineration fly ash can be used in thermal insulation cotton preparation.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation cotton production, and in particular relates to thermal insulation cotton made from ironmaking hot slag and waste incineration fly ash and a preparation method thereof. Background technique [0002] Ironmaking hot slag refers to the hot slag produced in the blast furnace ironmaking or ferroalloy process, which is mainly oxides of silicon, calcium, aluminum, magnesium, manganese and nickel, accounting for more than 85% of the total content. It also contains a small amount of iron, carbon, phosphorus and sulfur. The output of ironmaking hot slag in my country is relatively large, but at present most of its treatment adopts the water quenching method, which not only cannot use the sensible heat of hot slag, but also causes a lot of waste of water resources. In addition, the slag is also harmful to the atmosphere, water and soil Serious pollution has been caused and the working environment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/06C03B37/04C03B37/06
CPCC03C13/06C03B37/06C03B37/04
Inventor 陈堃宋自新朱飞邵雁郭华军张辉胜
Owner CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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