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Method capable of utilizing blast-furnace slag to produce aerated hollow brick

A blast furnace slag and hollow brick technology, which is applied in the directions of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of unimplemented industrial realization, difficulty in comprehensive utilization of blast furnace slag, etc. Lightweight, high-volume effect

Active Publication Date: 2013-09-11
安徽中龙建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For a long time, the comprehensive utilization of blast furnace slag has been a worldwide problem. Although a lot of research has been done on the comprehensive utilization of blast furnace slag at home and abroad, due to various technical and economic reasons, most of them have not been put into industrial realization.
[0004] In summary, it has been reported that blast furnace slag is used as an auxiliary raw material to produce cement, wall bricks, and road materials, but there is no report on the production of aerated blocks with construction waste as the main raw material

Method used

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Examples

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Effect test

Embodiment Construction

[0018] A method for producing aerated hollow bricks by using blast furnace slag, the method includes the following steps:

[0019] 1) Take 8 parts by mass of cement, 2 parts of gypsum, 25 parts of phosphate slag, and 4 parts of redispersible latex powder, mix and crush;

[0020] 2) Take 50 parts by mass of blast furnace slag and 0.05 part of aluminum powder, mix the crushed cement, gypsum and phosphate slag with blast furnace slag and aluminum powder, and then finely grind them;

[0021] 3) Shred the urban inorganic waste, and take 10 parts by mass of the urban inorganic waste;

[0022] 4) Put the crushed urban inorganic waste, finely ground dry material, and 10 parts of quicklime into the mixing equipment, and add water, epoxy dioctyl tetrahydrophthalate equivalent to 10-15% of the cement mass fully stir;

[0023] 5) Put the slurry stirred in the above step (4) at a temperature of 65-75°C, and foam for 30-40 minutes;

[0024] 6) The foaming slurry is injected into the form...

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PUM

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Abstract

The invention discloses a method capable of utilizing blast-furnace slag to produce an aerated hollow brick. The method comprises the following steps: 1), taking 5-10 parts of mixing cement, 1-3 parts of gypsum and 12-35 parts of phosphorus slag to be mixed and crushed according to the mass part; and 2), before fine milling, as mass percent, taking 50-70 parts of blast-furnace slag and 1-3 parts of aluminite powder according to the mass part, uniformly mixing the two with the three crushed materials in the step 1, and then carrying out fine milling. According to the invention, a larger amount of blast-furnace slag can be used to achieve the purposes of energy conservation and environment protection and relieve the environment pollution caused by processing the blast-furnace slag pile, and a novel material source is provided for the hollow bricks.

Description

technical field [0001] The invention relates to the field of new building materials, in particular to a method for producing aerated hollow bricks by using blast furnace slag. Background technique [0002] Blast furnace slag is a waste residue discharged from the blast furnace when smelting pig iron. When smelting pig iron in the blast furnace, the raw materials added from the blast furnace, in addition to iron ore and fuel (coke), also need to add flux. When the furnace temperature reaches 1400-1600°C, the flux reacts with the iron ore to generate pig iron and slag. Blast furnace slag is a fusible mixture consisting of gangue, ash, flux and other impurities that cannot enter pig iron. In terms of chemical composition, blast furnace slag is a silicate material. For every 1 ton of pig iron produced, the discharge of blast furnace slag varies with ore grade and smelting method. For example, when lean iron ore is used for ironmaking, 1.0-1.2 tons of blast furnace slag is pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/16C04B18/14
CPCY02W30/91
Inventor 强晓震
Owner 安徽中龙建材科技有限公司
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