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Cement clinker production method

A cement clinker and production method technology, applied in the field of building materials, can solve the problems of production and quality decline, coal consumption, power consumption increase, affecting the quality and cost of cement clinker, etc., to improve flammability, reduce coal consumption, The effect of promoting the reaction rate of solid-state diffusion

Active Publication Date: 2018-07-27
江西亚东水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, the purpose of the present invention is to provide a cement clinker production method, to solve the problem of using hard sandstone to produce cement clinker production and quality decline, coal consumption, power consumption increase, affecting the quality and cost of cement clinker

Method used

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  • Cement clinker production method

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Effect test

Embodiment 1

[0042] A method for producing cement clinker, comprising:

[0043] Step 1, at first take the sandstone of certain weight;

[0044] Among them, the sandstone to be weighed is hard sandstone, its bond work index is not less than 15Kw.h / t, and the initial particle size of sandstone particles is less than 60mm.

[0045] Step 2: Grind the weighed sandstone to obtain sandstone powder and store it, and then directly measure and discharge the material from the sandstone powder warehouse according to the percentage when it needs to be used later;

[0046] Wherein, in this step, the weighed sandstone is ground, and the sandstone powder obtained after grinding is passed through a 75um sieve to ensure that 8-10% of the sieve remains, wherein, 8-10% refers to the fineness of the sandstone powder, and simultaneously The particle size of the quartz particles in the sandstone powder is less than 125 μm, and then the sandstone powder is stored, and the ground sandstone powder can be stored in...

Embodiment 2

[0058] A method for producing cement clinker, comprising:

[0059] Step 1, at first take the sandstone of certain weight;

[0060] Among them, the sandstone to be weighed is hard sandstone, its bond work index is not less than 15Kw.h / t, and the initial particle size of sandstone particles is less than 60mm.

[0061] Step 2: Grind the weighed sandstone to obtain sandstone powder and store it, and then directly measure and discharge the material from the sandstone powder warehouse according to the percentage when it needs to be used later;

[0062] Wherein, in this step, the weighed sandstone is ground, and the sandstone powder obtained after grinding is passed through a 75um sieve to ensure that 8-10% of the residue is sieved, wherein, 8-10% refers to the fineness of the sandstone powder, and simultaneously The particle size of the quartz particles in the sandstone powder is less than 125 μm, and then the sandstone powder is stored, and the ground sandstone powder can be store...

Embodiment 3

[0074] A method for producing cement clinker, comprising:

[0075] Step 1, at first take the sandstone of certain weight;

[0076] Among them, the sandstone to be weighed is hard sandstone, its bond work index is not less than 15Kw.h / t, and the initial particle size of sandstone particles is less than 60mm.

[0077] Step 2: Grind the weighed sandstone to obtain sandstone powder and store it, and then directly measure and discharge the material from the sandstone powder warehouse according to the percentage when it needs to be used later;

[0078] Wherein, in this step, the weighed sandstone is ground, and the sandstone powder obtained after grinding is passed through a 75um sieve to ensure that 8-10% of the residue is sieved, wherein, 8-10% refers to the fineness of the sandstone powder, and simultaneously The particle size of the quartz particles in the sandstone powder is less than 125 μm, and then the sandstone powder is stored, and the ground sandstone powder can be store...

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Abstract

The invention provides a cement clinker production method. The method comprises steps as follows: firstly, a certain weight of sandstone is weighed firstly; the weighed sandstone is ground, and sandstone powder is obtained and stored; a certain weight of limestone, clay and iron ore scraps are weighed, mixed and ground, and limestone powder is obtained; the limestone powder and the sandstone powder are uniformly mixed, and raw powder is obtained; the raw powder is sent into a preheater for preheating; the preheated raw powder is sent into a rotary kiln for calcination, and cement clinker is obtained and subjected to quick chilling. According to the method, the hard sandstone is independently ground, so that reaction activity of quartz crystals in the sandstone powder can be improved, burnability of the raw powder is improved, yield of the clinker is increased, quality of the clinker is improved, electric consumption in the production process is reduced, and production cost is reduced;besides, activity of tricalcium silicate in the cement clinker can be improved, and quality of the cement clinker is guaranteed.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for producing cement clinker. Background technique [0002] Cement is a construction material made by mixing and grinding limestone, sandstone, clay and other materials, calcining clinker at high temperature, adding gypsum and other materials to the clinker and grinding it to a certain fineness. With the continuous development of the construction industry, the demand for cement is also increasing. [0003] In the prior art, the production process of cement clinker is to mix limestone, clay, sandstone, iron ore and other raw materials, grind them into raw meal, and then calcinate the raw meal at high temperature to form cement clinker. [0004] However, since the sandstone used to produce cement is mostly hard sandstone, most of the quartz crystals in the sandstone are relatively coarse particles, and the free SiO in the quartz crystals 2 The content is 55-60...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/14
CPCC04B7/14Y02P40/10
Inventor 张振昆
Owner 江西亚东水泥有限公司
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