Method for producing micro-crystal foamed glass plate by using molten slag of blast furnace and equipment used in method

A technology of foamed glass-ceramics and blast furnace slag, which is applied in the fields of metallurgy and inorganic non-metallic materials, and can solve the problems of porous and rough surfaces, poor viewing effects, and high energy consumption

Active Publication Date: 2014-08-13
江西璞晶新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above disclosed patents show that the raw materials of foamed glass-ceramics are mainly blast furnace hot slag, industrial waste slag and liquid red hot steel slag. Although part of the h

Method used

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  • Method for producing micro-crystal foamed glass plate by using molten slag of blast furnace and equipment used in method
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  • Method for producing micro-crystal foamed glass plate by using molten slag of blast furnace and equipment used in method

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Experimental program
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Embodiment 1

[0095] The method for producing a foamed glass-ceramic plate using blast furnace slag provided in this embodiment comprises the following steps:

[0096] (1) The 1450-1550 ℃ slag flowing out of the blast furnace is transferred to the component quenching and tempering stirring pool through the heat preservation of the iron mixing furnace; the addition amount of the blast furnace slag is 40%;

[0097] (2) Add the component modifier into the component tempering stirring tank, blow the inert gas from the top to mix the components evenly, and spray the iron and steel by-product gas to keep the slag at 1450-1500°C for 1 hour; the modifier is quartz Sand, the amount added is 55%;

[0098] (3) The slag enters the slag clarification tank through the slag port at the bottom of the component quenching and tempering mixing tank, adding clarifiers to remove various impurities and air bubbles in the slag to make its composition uniform, and spraying steel by-product gas to make The slag is...

Embodiment 2

[0106] The method for producing foamed glass-ceramic plates from blast furnace slag provided by the invention comprises the following steps:

[0107] (1) The 1450-1550°C slag flowing out of the blast furnace is heated and kept in a mixed iron furnace and transferred to the composition quenching and tempering stirring pool; the amount of slag added is 80%;

[0108] (2) Add the component modifier into the component tempering stirring tank, blow the inert gas from the top to mix the components evenly, and spray the steel by-product gas to keep the slag at 1500-1550°C for 1 hour; the modifier is quartz Sand, the amount added is 15%;

[0109] (3) The slag enters the slag clarification tank through the slag port at the bottom of the component quenching and tempering stirring tank, and clarifiers are added to remove various impurities and air bubbles in the slag to make the composition uniform, and the steel by-product gas is injected to make the The slag is kept at 1500-1550°C; the...

Embodiment 3

[0119] The method for preparing the foamed glass-ceramic plate from the blast furnace slag provided in this embodiment comprises the following steps:

[0120] (1) The molten slag at about 1500°C flowing out of the blast furnace is heated and kept in the iron mixing furnace and transferred to the component quenching and tempering stirring pool; the amount of molten slag added is 60%;

[0121] (2) Add the component modifier into the component tempering stirring tank, blow the inert gas from the top to mix the components evenly, and spray the iron and steel by-product gas to keep the slag at 1450-1500°C for 1 hour; the modifier is kaolin , the added amount is 39.8%;

[0122] (3) The slag enters the slag clarification tank through the slag port at the bottom of the component quenching and tempering stirring tank, and clarifiers are added to remove various impurities and air bubbles in the slag to make the composition uniform, and the steel by-product gas is injected to make the T...

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Abstract

The invention belongs to the fields of metallurgy and inorganic nonmetallic materials and provides a method for producing a micro-crystal foamed glass plate by using molten slag of a blast furnace. The method comprises the following steps of (1) transferring molten slag of the blast furnace to a component tempering stirring tank, adding a modifier, and uniformly stirring to ensure the temperature of the molten slag; (2) transferring the molten slag to a clarification tank, adding a clarifying reagent, and uniformly stirring to ensure the temperature of the molten slag; (3) enabling the molten slag to enter a water quenching tank to be subjected to water quenching to form micro-crystal grains; (4) drying the micro-crystal grains, grinding, and then, sieving the micro-crystal grains with different particle sizes; (5) adding a foaming agent into the qualified micro-crystal grains and uniformly stirring; (6) spreading the micro-crystal grains on a refractory slab, and preserving the heat in a nucleation region for a certain period of time; (7) preserving the heat in a crystallization region for a period of time; (8) cooling in a cooling region to obtain a finished product of micro-crystal foamed glass. The method is capable of sufficiently utilizing the molten slag of the blast furnace, solid waste resources and the energy of the molten slag of the blast furnace, high in product strength, low in density, resistant to corrosion and capable of insulating heat and noise.

Description

technical field [0001] The invention belongs to the fields of metallurgy and inorganic non-metallic materials, and in particular relates to a method and equipment for producing foamed glass-ceramic plates by using blast furnace slag. Background technique [0002] According to the data released by the World Iron and Steel Association, the world's pig iron production in 2012 was 1.1 billion tons, of which the country with the highest output was China, with a yearly output of 650 million tons in 2012. In the blast furnace smelting process, even if calculated according to the slag ratio of 300Kg, the output of blast furnace slag is as high as nearly 200 million tons. How to efficiently utilize these high-temperature slags has gradually become a focus of attention. The current blast furnace slag treatment process basically adopts the water flushing slag process, and the obtained products are basically used in cement production, and the blast furnace slag used as raw material for...

Claims

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Application Information

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IPC IPC(8): C03C10/04C03C11/00
Inventor 吴克诚陈怀冰杨洋
Owner 江西璞晶新材料股份有限公司
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