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Environment-friendly brick and preparation method thereof

A technology for environmental protection bricks and silt, applied in the field of environmental protection bricks and their preparation, can solve the problems of natural environment damage, negative impact on the ecological environment, etc., and achieve the effects of protecting the environment, increasing building functions, and reducing engineering costs.

Inactive Publication Date: 2021-02-23
BAOTOU ENG & RES CORP OF IRON & STEEL IND CHINA METALLURGY CONSTR GROUP BERIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Brick is one of the essential materials in the construction industry. At present, in our country, the commonly used method of producing bricks is to mix raw coal and gangue in cement to develop bricks as internal fuels. However, the mining of raw coal and gangue itself is A kind of damage to the natural environment has a great negative impact on the underground ecological environment

Method used

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  • Environment-friendly brick and preparation method thereof

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preparation example Construction

[0037] On the other hand, the present invention provides a kind of preparation method of environmental protection brick, comprises the following steps:

[0038] (1) After the sludge is aged, mix it evenly with cement, fly ash, steel slag and water reducer in a weight ratio, and add water at the same time to make the moisture content of the mixed material 0.5%-2.0% (weight);

[0039] (2) Pressing the mixed material to obtain a blank;

[0040] (3) The green brick is obtained by drying and roasting the green sample.

[0041] The preparation method of the environmental protection brick of the present invention has the advantages of simple production process, easy control, fast construction speed and the like.

[0042] In some preferred embodiments, the preparation method of the environmental protection brick of the present invention comprises the following steps:

[0043] (1) After the sludge is aged, it is evenly mixed with cement, fly ash, steel slag, and water reducing agent ...

Embodiment 1

[0061] Firstly, the raw coal is transported from the storage shed into the fine crusher and crushed into coal powder smaller than 6mm, the steel slag is filtered to a particle size below 6mm, and the sludge is weathered and aged for 5 days. It is sent to the feed bin by a belt conveyor, and a disc feeder is installed under the feed bin, and the crushed and filtered silt, cement, fly ash and steel slag, water, and water reducing agent are measured and filtered by the disc feeder. Simultaneously feed into a twin-shaft mixer for stirring and mixing, and the moisture content of the mixed material is 1.6% (weight). Among them, by weight, 12 parts of sludge, 30.4 parts of cement, 15 parts of fly ash, 23 parts of steel slag, and 3 parts of water reducing agent. The mixed material is pressed under 8 MPa by a vacuum hydraulic brick extruding unit to obtain a blank sample. The blank sample was dried at 48°C for 40 hours through a tunnel-type drying kiln, and then entered into the tunne...

Embodiment 2

[0063] Firstly, the raw coal is transported from the storage shed into the fine crusher and crushed into coal powder smaller than 6mm, the steel slag is filtered to a particle size below 6mm, and the sludge is weathered and aged for 5 days. It is sent to the feed bin by a belt conveyor, and a disc feeder is installed under the feed bin, and the crushed and filtered silt, cement, fly ash and steel slag, water, and water reducing agent are measured and filtered by the disc feeder. Simultaneously feed into a twin-shaft mixer for stirring and mixing, and the moisture content of the mixed material is 2% (by weight). Among them, by weight, 10 parts of sludge, 32 parts of cement, 30 parts of fly ash, 22.5 parts of steel slag, and 5.5 parts of water reducing agent. The mixed material is pressed under 15MPa by a vacuum hydraulic brick extruder to obtain a blank sample. The blank sample is dried at 50°C for 46 hours through a tunnel-type drying kiln, and then enters the tunnel kiln for...

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Abstract

The invention belongs to the technical field of resource recycling, and particularly relates to an environment-friendly brick and a preparation method thereof. The environment-friendly brick comprisesthe components in parts by weight: 10-25 parts of sludge, 20-32 parts of cement, 15-30 parts of fly ash, 8-25 parts of steel slag and 2.5-5.5 parts of a water reducing agent. The compressive strengthof the environment-friendly brick is larger than 36 MPa, the strength loss rate after freeze thawing is smaller than 17%, and all indexes meet the requirements specified in GB 28635-2012 'Concrete Pavement Brick'.

Description

technical field [0001] The invention belongs to the technical field of resource reuse, and in particular relates to an environment-friendly brick and a preparation method thereof. Background technique [0002] Brick is one of the essential materials in the construction industry. At present, in our country, the commonly used method of producing bricks is to mix raw coal and gangue in cement to develop bricks as internal fuels. However, the mining of raw coal and gangue itself is A kind of damage to the natural environment has a great negative impact on the underground ecological environment. [0003] Power plants or other industrial enterprises that use pulverized coal as fuel produce a large amount of waste slag, and steel mills also produce a large amount of waste steel slag. If these waste slag can be well utilized, it will not only reduce the treatment cost, but also open up new opportunities for the production of building materials industry. resources, turning waste int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B40/02C04B111/20
CPCC04B28/02C04B2111/00017C04B2111/20C04B2201/50C04B18/0418C04B18/08C04B18/142C04B40/0268C04B2103/302
Inventor 王家栋倪日新于广明张东生王海光
Owner BAOTOU ENG & RES CORP OF IRON & STEEL IND CHINA METALLURGY CONSTR GROUP BERIS
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