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A method for producing microcrystalline lightweight bricks using blast furnace slag

A blast furnace slag, lightweight brick technology, applied in the field of engineering materials, can solve the problem that the sensible heat and latent heat of high-temperature slag are difficult to be effectively recycled, waste water, corrosive hot steam heat cannot be recovered, and water resources cannot be recycled and repeated. Use and other issues to achieve the effects of good thermal insulation, high strength and low density

Active Publication Date: 2016-07-06
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

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 cement production has almost no profit at all.
At the same time, every ton of high-temperature slag with a temperature of 1450-1550 °C needs to consume 1.2 tons of new water for quenching, and a large amount of waste water, corrosive hot steam and heat cannot be recovered. At the same time, a large amount of water resources used cannot be recycled and reused. The large amount of sensible heat and latent heat that exists is difficult to be effectively recycled

Method used

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  • A method for producing microcrystalline lightweight bricks using blast furnace slag
  • A method for producing microcrystalline lightweight bricks using blast furnace slag
  • A method for producing microcrystalline lightweight bricks using blast furnace slag

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Effect test

Embodiment 1

[0083] The present invention provides a process for producing microcrystalline lightweight bricks using blast furnace slag, comprising the following steps:

[0084] (1) The 1400-1580°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 tank;

[0085] (2) Add the conditioning agent into the component conditioning mixing 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 1400-1580°C for 1 hour;

[0086] (3) The slag enters the slag clarification tank through the slag port at the bottom of the component quenching and tempering mixing tank, and antimony trioxide is added to remove various impurities and bubbles in the slag to make the composition uniform, and the iron and steel by-product gas is injected, Keep the molten slag at 1400-1580°C;

[0087] (4) The molten slag enters the slag bag through the slag port a...

Embodiment 2

[0095] The present invention provides a process for producing microcrystalline lightweight bricks using blast furnace slag, comprising the following steps:

[0096] (1) The 1400-1580°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 tank;

[0097] (2) Add the component modifying agent 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 1400-1580°C for 1 hour;

[0098] (3) The slag enters the slag clarification tank through the slag port at the bottom of the composition-conditioning and tempering stirring 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 The slag is kept at 1400-1580°C;

[0099] (4) The molten slag enters the slag bag through the slag port a...

Embodiment 3

[0107] The present invention provides a process for producing microcrystalline lightweight bricks using blast furnace slag, comprising the following steps:

[0108] (1) The 1400-1580°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 tank;

[0109] (2) Add the component modifying agent 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 1400-1580°C for 1 hour;

[0110] (3) The slag enters the slag clarification tank through the slag port at the bottom of the composition-conditioning and tempering stirring 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 The slag is kept at 1400-1580°C;

[0111] (4) The molten slag enters the slag bag through the slag port a...

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Abstract

The invention discloses a method for producing microcrystalline light-weight bricks by using blast furnace slag. The light-weight bricks use blast furnace slag as the main raw material. The quenching pool is quenched by water into microcrystalline pellets, which are ground and screened to obtain microcrystalline pellets with suitable particle size, mixed with foaming agent, put into the mold and sintered to make microcrystalline with uniform bubbles and stable composition. Crystal lightweight bricks; compared with traditional clay bricks, microcrystalline lightweight bricks have lower density and higher strength, so they have better load-bearing capacity, and because of their uniform pore structure, they have good thermal insulation and sound insulation Therefore, to a certain extent, it replaces clay bricks or ordinary lightweight bricks as a new type of building material.

Description

technical field [0001] The invention relates to the technical field of engineering materials, in particular to a method for producing microcrystalline lightweight bricks by using blast furnace slag. Background technique [0002] Clay bricks are man-made small blocks used in construction. Also known as sintered bricks. Solid clay bricks are one of the oldest building materials in the world. From the Mausoleum of the First Qin Emperor to the Great Wall of Ming and Qing Dynasties, it has inherited the history of architectural civilization of the Chinese nation for thousands of years. So far, it is still the favorite building material of Chinese people. But, because the manufacture of clay brick needs a large amount of land, can destroy a large amount of land resources. Therefore, the government promulgated the "Banning and Limiting Solid" order, stipulating that the burning of clay bricks to build houses is prohibited nationwide, the use of solid clay bricks is prohibited in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C6/10C03C10/00C03C11/00
Inventor 吴克诚陈怀冰邓释禅
Owner 江西璞晶新材料股份有限公司