New application of high fine collected ash from cement factory dust collector and cement containing high fine collected ash

A technology for collecting dust and cement plants, which is applied in the new application field of high-fine dust collection in cement plants, which can solve problems such as waste, and achieve the effects of increasing compactness, improving workability, and increasing compactness

Inactive Publication Date: 2007-01-31
张斌 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of high-fine dust collection can be used to supplement the shortage of fine particles in cement and obviously improve the performance of cement. If it is calcined by traditional methods, it will cause great waste

Method used

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  • New application of high fine collected ash from cement factory dust collector and cement containing high fine collected ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add high-fine ash as 4% (percentage by weight) directly into various finished cements (including general-purpose cement and special cement). The performance test results of various cements are shown in the table below.

[0030] Table 1

[0031]

[0032] Note: A space means no data

[0033] Table 2

[0034]

[0035] LL-1

[0036] Note: A space means no data

Embodiment 2

[0038] The Portland cement is mixed with 15% by weight of high-fine dust collection ash, and the Portland cement accounts for 85%. Among them, Portland cement (taking Portland cement as 100%) clinker is 95%, gypsum is 5%, and other common mixed materials are 0%.

[0039] Silicate

Embodiment 3

[0041] The composite Portland cement is mixed with 6% of high-fine dust collection ash by weight, and the composite Portland cement accounts for 94%. Among them, in the composite Portland cement (calculated as 100% of the composite Portland cement) clinker is 64%, gypsum is 5%, and other common mixed materials are 31%.

[0042] Complex silicic acid

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Abstract

The present invention relates to a new application of high-fine recovered dust ash of cement plant. It can be mixed into cement and can be used as cement blending material and cement reinforcing agent. The tests show that it not only can raise strength of cement, but also can raise cement endurance quality, fluidity and workability, and can reduce production cost of cement.

Description

technical field [0001] The invention belongs to a production method of cement, in particular to a new application of high-fine dust collection in cement plants. The high-fine dust collection refers to the high-fine dust collection dust at the kiln tail of the precalcining kiln or / and the high-fine dust collection dust of the raw meal mill. Background technique [0002] The main production process of cement enterprises is: raw material grinding → clinker calcination → cement grinding → finished cement. A large amount of dust will be generated in the production process of each process, so cement enterprises use a large number of dust collection equipment, and electrostatic precipitator and bag filter are the main ones. The traditional process method to deal with the high and fine dust generated by the dust collector is generally, the dust generated by the raw material system and the preheating system of the kiln tail of the precalcining kiln is returned to the raw material st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/28C04B22/10
Inventor 张斌张大康崔其力
Owner 张斌
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