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Method for producing cement by using shale as raw material

A shale and cement technology, applied in the field of cement production, can solve problems such as ecological environment damage

Inactive Publication Date: 2010-06-23
赵援朝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because calcination requires a lot of energy, and coal is generally used as energy, the combustion of coal will produce a large amount of CO 2 other greenhouse gases and SO 2 , NO X and other toxic gases, which seriously damage the ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The production formula is: 65 kg of limestone, 16 kg of shale, 12 kg of coal, 2 kg of iron powder, 1.5 kg of gypsum, 1.5 kg of fluorite, and 2 kg of mixed materials.

[0009] Crush limestone, shale, coal, gypsum and fluorite until the particle size is less than 20mm, dry the crushed coal, fluorite and iron powder separately, and mix the prepared limestone, shale, coal, iron powder, gypsum and fluorite After being sent to the raw material mill for grinding, water is added and sent to the pelletizing disk to make particles with a particle size of less than 10mm. The inclination angle of the pelletizing disk is 42°. 1100°C-1350°C, the expansion angle of the shaft kiln is 11.5°, the calcined ingredients, the crushed gypsum and the dried mixture are sent to the cement mill after batching to grind into cement products with a particle size of 0.08mm.

Embodiment 2

[0011] The production formula is: 75 kg of limestone, 11 kg of shale, 8 kg of coal, 0.1 kg of iron powder, 0.8 kg of gypsum, 0.8 kg of fluorite, and 4.3 kg of mixed materials.

[0012] Crush limestone, shale, coal, gypsum and fluorite until the particle size is less than 20mm, dry the crushed coal, fluorite and iron powder separately, and mix the prepared limestone, shale, coal, iron powder, gypsum and fluorite After being sent to the raw material mill for grinding, water is added and sent to the pelletizing disc to make particles with a particle size of less than 10mm. The inclination angle of the pelletizing disc is 44°. 1100°C-1350°C, the expansion angle of the shaft kiln is 12°, the calcined ingredients, crushed gypsum and dried mixed materials are sent to the cement mill after batching to grind into cement products with a particle size of 0.08mm.

Embodiment 3

[0014] The production formula is: 70 kg of limestone, 14 kg of shale, 10 kg of coal, 0.8 kg of iron powder, 1.2 kg of gypsum, 1 kg of fluorite, and 3 kg of mixed materials.

[0015] Crush limestone, shale, coal, gypsum and fluorite until the particle size is less than 20mm, dry the crushed coal, fluorite and iron powder separately, and mix the prepared limestone, shale, coal, iron powder, gypsum and fluorite After being sent to the raw material mill for grinding, water is added and sent to the pelletizing disk to make particles with a particle size of less than 10mm. The inclination angle of the pelletizing disk is 45°. 1100°C-1350°C, the expansion angle of the shaft kiln is 12°, the calcined ingredients, crushed gypsum and dried mixed materials are sent to the cement mill after batching to grind into cement products with a particle size of 0.08mm.

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Abstract

The invention relates to a method for producing cement by using shale as raw material. The method is that limestone, shale, coal, gypsum and fluorite are separately crushed first, the crushed coal, fluorite and iron powder are dried, the prepared limestone, shale, coal, iron powder, gypsum and fluorite are ground, are added with water, are fed into a balling disc and are made into particles, the inclination of the balling disc is 42 degrees to 52 degrees, the obtained particles are fed into a vertical kiln for calcination, the widening angle of the vertical kiln is 11.5 degrees to 12.5 degrees, the calcined clinker, the crushed gypsum and the dried mixture are mixed and are fed into a cement grinding mill, and the cement grinding mill outputs cement product. The invention has the advantages that the early strength of the cement is improved, the setting time is shortened and the impact resistance is enhanced.

Description

Technical field: [0001] The invention relates to a method for producing cement by using shale as a raw material, belonging to the field of building materials. technical background: [0002] At present, global resources are in short supply and the environment is deteriorating day by day. Energy conservation, emission reduction, and protection of the ecological environment have become the common goal of the whole society. In the field of chemical engineering and material energy, concepts and technological inventions of green chemistry and green chemical industry emerge in endlessly. Economical engineering and green technology are also the tireless pursuit of the vast number of scientific researchers and entrepreneurs in the production process. Cement has been widely used in construction projects as an important cementitious material for a long time. With the improvement of people's living standards, the requirements for construction projects are increasing. While continuousl...

Claims

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Application Information

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IPC IPC(8): C04B7/00
CPCC04B7/421
Inventor 赵援朝
Owner 赵援朝
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