Cement clinker and preparation method and application thereof

A technology of cement clinker and cement raw meal, which is applied in the direction of cement production and clinker production, etc. It can solve the problems of not being able to meet the needs of large-scale construction projects, the early strength decline of composite cement, and the poor stability of composite cement, so as to shorten the clinker. Effects of forming time, improving burnability, and shortening setting time

Active Publication Date: 2017-05-24
奎山水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not difficult to see that there are mainly the following deficiencies in the existing disclosed technologies utilizing industrial waste residues: the quality of cement is not stable, the strength is low, and it cannot meet the requirements of large-scale construction projects.
Although most waste residues used in cement production have certain gelling activity or potential gelling activity, their activity is much lower than that of cement clinker, resulting in poor performance of composite cement
Especially when the amount of waste slag is high, the early strength of the composite cement is greatly reduced
Some waste slag (especially steel slag) contains more f-CaO and f-MgO, which may easily cause poor stability of composite cement
In addition, waste residues with high carbon or sulfur content (such as high-carbon fly ash, desulfurization ash, etc.) can also cause poor cement stability

Method used

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  • Cement clinker and preparation method and application thereof
  • Cement clinker and preparation method and application thereof
  • Cement clinker and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of cement clinker, is prepared by the following raw material components by mass parts:

[0042]

[0043] The preparation method of above-mentioned cement clinker, comprises the steps:

[0044] (1) the limestone of the raw material component 70 mass parts of above-mentioned cement clinker, the perlite of 12 mass parts, the clay of 12 mass parts, the steel slag of 8 mass parts, the lithium slag of 6 mass parts, the chromium of 6 mass parts The slag and 4 parts by mass of fly ash were respectively crushed, ground, and uniformly mixed in a raw meal homogenization storehouse to obtain raw cement meal, wherein the fineness of the raw meal cement was 80 μm and the sieve residue of a square hole sieve was 6%;

[0045] (2) Calcining the raw cement meal prepared in step (1) at 1250° C. for 40 minutes to obtain cement clinker.

[0046] A preparation method for cement, comprising the steps of:

[0047] Mix the above cement clinker with gypsum, grind until the average pa...

Embodiment 2

[0049] A kind of cement clinker, is prepared by the following raw material components by mass parts:

[0050]

[0051] The preparation method of above-mentioned cement clinker, comprises the steps:

[0052] (1) the limestone of the raw material component 80 mass parts of above-mentioned cement clinker, the perlite of 10 mass parts, the clay of 15 mass parts, the steel slag of 10 mass parts, the lithium slag of 5 mass parts, the chromium of 5 mass parts The slag and 3 parts by mass of fly ash are crushed and ground respectively, and mixed evenly in the raw meal homogenization storehouse to obtain cement raw meal, wherein the fineness of the cement raw meal is 80 μm and the sieve allowance of the square hole sieve is 10% ;

[0053] (2) Calcining the raw cement meal prepared in step (1) at 1200° C. for 60 minutes to obtain cement clinker.

[0054] A preparation method for cement, comprising the steps of:

[0055] Mix the above cement clinker with gypsum, grind until the ave...

Embodiment 3

[0057] A kind of cement clinker, is prepared by the following raw material components by mass parts:

[0058]

[0059] The preparation method of above-mentioned cement clinker, comprises the steps:

[0060] (1) the limestone of the raw material component 60 mass parts of above-mentioned cement clinker, the perlite of 15 mass parts, the clay of 10 mass parts, the steel slag of 5 mass parts, the lithium slag of 8 mass parts, the chromium of 8 mass parts The slag and 5 parts by mass of fly ash are respectively crushed, ground, and mixed evenly in the raw meal homogenization storehouse to obtain cement raw meal, wherein the fineness of the cement raw meal is 80 μm and the sieve allowance of the square hole sieve is 5%. ;

[0061] (2) Calcining the raw cement meal prepared in step (1) at 1350° C. for 30 minutes to obtain cement clinker.

[0062] A preparation method for cement, comprising the steps of:

[0063] The above cement clinker is mixed with gypsum, and ground until t...

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Abstract

The invention belongs to the field of cement clinker preparation, and in particular, relates to cement clinker and a preparation method and an application thereof. The cement clinker is prepared from the following raw material components in parts by mass: 60-80 parts of limestone, 10-15 parts of perlite, 10-15 parts of clay, 5-10 parts of steel slag, 5-8 parts of lithium slag, 5-8 parts of chromium slag, and 3-5 parts of fly ash. The raw material components are broken, ground, mixed evenly and calcined to obtain the cement clinker; the cement clinker is mixed with gypsum and ground to obtain cement. Based on traditional cement clinker raw materials, the steel slag, lithium slag, chromium slag, fly ash and perlite are added, and play roles in adding a seed crystal, improving the burnability of cement raw material and grindability of the cement clinker, shortening the clinker formation time and setting time and the like; the prepared cement clinker and the cement have the characteristics of low hydration heat, good water retention, strong heat preservation and frost resistance, high strength and the like.

Description

technical field [0001] The invention belongs to the field of cement clinker preparation, in particular to a cement clinker and its preparation method and application. Background technique [0002] Cement is a powdery hydraulic inorganic gelling material. It can be mixed with water to form a slurry. It can be hardened in air or better hardened in water, and can firmly bind sand, stone and other materials together. For a long time, as an important cementing material, it is widely used in civil engineering, water conservancy, national defense and other projects. The cement industry is an indispensable basic raw material industry for national economic development, production construction and people's life. With the development of my country's economy, the cement industry has reached a considerable scale. In 2015, the global cement production was 4.1 billion tons, while China's cement production was 2.35 billion tons in 2015, accounting for more than 57% of the world's total ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26C04B7/44C04B11/28
CPCC04B7/26C04B7/44C04B11/28Y02P40/10Y02P40/121
Inventor 刘勇英
Owner 奎山水泥有限公司
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