Cement produced by virtue of waste sintered brick powder and preparation method for cement

A brick powder and waste technology, applied in cement production and other directions, can solve the problems of resource waste, unevenness, environmental pollution of waste sintered brick powder, etc., and achieve the effect of saving resources, reducing sales prices, and reducing production costs.

Inactive Publication Date: 2016-10-12
XUCHANG JINKE RESOURCE RECYCLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is: in order to solve the problems of environmental pollution and resource waste of waste and old fired brick powder, as well as the shortage and uneven distribution of natural pozzolan mixed materials, and the large demand for artificial pozzolan mixed materials, the present invention provides a Cement produced from waste fired brick powder and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A cement produced by using waste and old fired brick powder, which consists of the following raw materials in parts by weight: 45.5 parts of Portland cement clinker, 20 parts of waste and old fired brick powder, and 3 parts of gypsum.

[0026] The preparation method of described Portland cement clinker is:

[0027] (1) Raw material preparation: Weigh 12% of clay raw material, 80% of calcareous raw material and 8% of corrected raw material according to the mass fraction, mix uniformly, and grind until the particle size of the mixture is less than 75 μm, to obtain raw meal;

[0028] (2) Calcination: Calcining the raw meal into Portland cement clinker in a drum type rotary kiln, the cylinder of the drum type rotary kiln is at an inclination angle of 3° to the horizontal:

[0029] First feed the raw material from the high end of the drum type rotary kiln, dry it in the kiln at 100°C until the moisture in the raw meal does not exceed 1%, preheat and dehydrate at 300°C, compl...

Embodiment 2

[0038] A cement produced by using waste and old fired brick powder is composed of the following raw materials in parts by weight: 50 parts of Portland cement clinker, 30 parts of waste and old fired brick powder, and 4 parts of gypsum.

[0039] The preparation method of described Portland cement clinker is:

[0040] (1) Raw material preparation: take 15% of clay raw material, 80% of calcareous raw material and 5% of corrected raw material according to the mass fraction, mix uniformly, and grind until the particle size of the mixture is less than 75 μm, to obtain raw meal;

[0041] (2) Calcination: Calcining the raw meal into Portland cement clinker in a drum type rotary kiln, the cylinder of the drum type rotary kiln is at an inclination angle of 3° to the horizontal:

[0042] First feed the raw material from the high end of the drum type rotary kiln, dry it in the kiln at 150°C until the moisture in the raw meal does not exceed 1%, preheat and dehydrate at 400°C, completely d...

Embodiment 3

[0051] A cement produced by using waste fired brick powder is composed of the following raw materials in parts by weight: 67 parts of portland cement clinker, 60 parts of waste fired brick powder and 4.5 parts of gypsum.

[0052] The preparation method of described Portland cement clinker is:

[0053] (1) Raw material preparation: Weigh 10% of clay raw material, 80% of calcareous raw material and 10% of corrected raw material according to the mass fraction, mix uniformly, and grind until the particle size of the mixture is less than 75 μm, to obtain raw meal;

[0054] (2) Calcination: Calcining the raw meal into Portland cement clinker in a drum type rotary kiln, the cylinder of the drum type rotary kiln is at an inclination angle of 3° to the horizontal:

[0055] First feed the raw material from the high end of the drum type rotary kiln, dry it in the kiln at 200°C until the moisture in the raw meal does not exceed 1%, preheat and dehydrate at 500°C, completely decompose the ...

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Abstract

The invention discloses cement produced by virtue of waste sintered brick powder and a production method for the cement. The cement is prepared from the following components in parts by weight: 45.5 to 67 parts of Portland cement clinker, 20 to 60 parts of waste sintered brick powder and 3 to 4.5 parts of gypsum. According to the cement and the production method for the same, Portland-pozzolana cement is produced by virtue of the waste sintered brick powder as an artificial pozzolana mixture instead of burnt clay, burnt shale and broken clay bricks, so that the technical problems of environmental pollution and resource waste caused by the waste sintered brick powder produced in a construction waste recycling process are effectively solved, a new manner for recycling the waste sintered brick powder is provided, natural clay and shale resources are also saved, energy consumption in sintering processes of the burnt clay, the burnt shale and the broken clay bricks is reduced, the production cost of the cement is greatly reduced, requirements of cities on cement are met, reclamation of construction waste is realized, a novel technology for a sustainable development strategy is provided, and the cement and the production method for the same are consistent with the policies of resource saving and environmental protection.

Description

technical field [0001] The invention relates to cement produced by utilizing waste and old fired brick powder and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] In recent years, with the advancement of urbanization, demolished buildings and rebuilt buildings have increased year by year, resulting in a large amount of construction waste (mainly discarded fired bricks and spoils) increasing day by day. The random stacking or landfilling of these construction wastes will occupy a large number of ecological resources such as rivers, lakes, land or forests, directly destroy the ground vegetation, change the structure and properties of the soil, affect the microbial activities in the soil, block the soil biological chain, and then pollute water, soil and atmosphere, and its direct impact on human resources is difficult to eliminate within a certain period of time. At the same time, the dust and dust produced dur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/24C04B7/36
CPCC04B7/246C04B7/36Y02P40/10
Inventor 李福安高琦郭思嘉邢如飞尤少阳贺方方柳炎荣天天侯明
Owner XUCHANG JINKE RESOURCE RECYCLING CO LTD
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