Cement clinker manufacturing device and manufacturing method

A technology of cement clinker and manufacturing device, which is applied in the field of cement clinker manufacturing device, can solve the problems of clinker fusion and adhesion, coating failure, reduce the heat of clinker burning, etc., and achieve the effect of reducing the heat of burning

Active Publication Date: 2011-10-19
MITSUBISHI MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when it is formed into concrete and mortar, it exhibits specific fluidity and strength performance, and there is a problem that it cannot be used in a wide range of applications like ordinary Portland cement used by users.
[0005] In addition, in the method of adding mineralizers such as fluorite to cement raw materials, the constituent elements volatilize in the rotary kiln and adhere to the inner wall of the rotary kiln and suspension preheater (hereinafter referred to as preheater) , There are problems such as coating failure, formation of specific cement due to the action of constituent components, or occasional clinker fusion and adhesion in the cement kiln due to changes in the amount of mineralizer added.
[0006] Due to these problems, the above two methods are not the main countermeasures to reduce the calorific value of clinker, and tend to become only secondary countermeasures.

Method used

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  • Cement clinker manufacturing device and manufacturing method
  • Cement clinker manufacturing device and manufacturing method
  • Cement clinker manufacturing device and manufacturing method

Examples

Experimental program
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Effect test

Embodiment approach 1

[0057] figure 1 Showing the first embodiment of the manufacturing apparatus of cement clinker of the present invention, figure 2 Indicates its modified example.

[0058] Such as figure 1 As shown, the first embodiment has a rotary kiln 1 for firing cement raw materials, and a preheater 3 for preheating cement raw materials is arranged in series at the kiln tail 2 on the left side of the figure of the rotary kiln 1 , the kiln front 24 on the right side of the figure is used to heat the main burner 19 inside, and the kiln front 24 is used to cool the clinker cooler 20 of the fired cement clinker. The chute 5 of the cyclone separator 4 of the lower section takes out the take-out pipeline 6 of the cement raw material, the firing furnace 8 connected with the take-off pipeline 6, and the above-mentioned cement raw material fired in the firing furnace 8 is returned to the rotary The return pipeline 9 of the kiln tail 2 of the kiln 1 is roughly constituted.

[0059] Among them, t...

Embodiment approach 2

[0074] image 3 Shows the second embodiment of the manufacturing apparatus of cement clinker of the present invention, for the figure 1 The same structural parts shown are similarly attached with the same symbols and their descriptions are simplified.

[0075] Such as image 3 As shown, in the second embodiment, in a cement clinker manufacturing apparatus having a rotary kiln 1, a preheater 3 including a four-stage cyclone separator 4, a calciner 21, etc., as a firing facility 7, a A waste fuelization system for pre-treating chlorine-containing combustible plastic waste and introducing it into the rotary kiln 1.

[0076] The sorting device 25 provided on the most upstream side of the waste fuelization system is installed in the waste fuelization system. The sorting device 25 separates the combustible plastic wastes to be processed into wastes with a high chlorine content such as polyvinyl chloride and polyvinylidene chloride (hereinafter referred to as chlorine-containing p...

Embodiment approach 3

[0101] Figure 4 Shows the third embodiment of the cement clinker manufacturing apparatus of the present invention, for the figure 1 and image 3 The same structural components shown are similarly attached with the same symbols and their explanations are simplified.

[0102] Such as Figure 4 As shown, in the third embodiment, as the firing equipment 7, set figure 1 The kiln 8 of the first embodiment shown is provided with a pyrolysis furnace 12 used in the second embodiment for pretreatment of combustible plastic waste containing chlorine and introducing it into the rotary Waste fuelization system in kiln 1.

[0103] In this third embodiment, the removal line 6 for taking out the cement raw material from the chute 5 of the lower cyclone separator 4d described in the first embodiment and the heat medium supply line 11 described in the second embodiment are connect. Moreover, the thermal decomposition furnace 12 of the above-mentioned waste fuelization system is connected...

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Abstract

The invention provides a cement clinker manufacturing device and a manufacturing method, which facilitates generation of alite after extracting and sintering a part of cement raw materials having halogen elements and / or fuel and prevent a heat loss from being generated during the high-temperature sintering process and thus reduce the sintering heat of the cement clinkers. The cement clinker manufacturing device comprises a preheater for preheating by mean of cement raw materials having halogen elements and / or fuel, and a rotary kiln for sintering the cement raw materials on the downstream side of the preheater. The cement clinker manufacturing device further comprises an extraction pipeline (6) for extracting a part of the cement raw materials from a sliding chute (5) of a cyclone separator (4) of the preheater (3), a sintering device (7) for sintering the cement raw materials extracted from the extraction pipeline (6), and a returning pipeline (9) located in the rotary kiln (1) and used for a part of the cement raw materials sintered in the sintering device (7) to return.

Description

technical field [0001] The present invention relates to a cement clinker production apparatus and a production method in which the calcining heat is reduced when producing cement clinker. Background technique [0002] A major change in clinker production technology in recent years is the advancement of technology to reduce the calorific value of cement clinker. That is, from the wet firing method in which water is added to the blended raw materials and homogenized and then fired, which requires a large amount of firing heat, it is transitioned to reducing the firing rate by drying the cement raw materials with hot air and then pulverizing them and firing them. In addition to the dry sintering method that generates heat, the following new suspension method has been developed. In the new suspension method, the adjusted raw materials are calcined through the preheater, and the obtained calcined raw materials are put into the rotary kiln, thereby further reducing the firing rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/43
Inventor 朝仓悦郎山下牧生
Owner MITSUBISHI MATERIALS CORP
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