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Thermal insulation cotton made from hot iron slag and waste incineration fly ash and preparation method thereof

A technology of waste incineration fly ash and thermal insulation cotton, applied in glass manufacturing equipment, manufacturing tools, etc., can solve problems such as deteriorating working environment, inability to use sensible heat of hot molten slag, air, water and soil pollution of slag stacking

Active Publication Date: 2022-02-22
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 made from hot iron 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 production, and in particular relates to a thermal insulation cotton made from ironmaking hot slag and waste incineration fly ash, including ironmaking hot slag and garbage incineration fly ash with a mass ratio of 1:0.1-0.3:0.01-0.02 Fly ash and auxiliary materials; the preparation method is as follows: 1) Introduce the ironmaking hot slag into the electric melting and tempering furnace, then add waste incineration fly ash and auxiliary materials, and melt and mix at high temperature; 2) The melt is centrifugally blown, pendulum laid The cotton is obtained into a cotton board, and the cotton board is solidified and reformed to obtain the thermal insulation cotton. The invention utilizes the thermal energy contained in the iron-making hot slag to prepare thermal insulation cotton, which can realize the efficient utilization of the residual energy of the iron-making hot slag; it can also use high-temperature treatment to decompose the dioxin in the waste incineration fly ash and separate part of the heavy metal chlorides And enriched in the secondary fly ash, a small amount of heavy metal elements left in the melt form a silicate eutectic with other substances to achieve stabilization; calcium, silicon, oxygen, aluminum and other elements in waste incineration fly ash It can also be reused for the preparation of insulation cotton.

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 Patents(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