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Composite cement with few silicate clinker components, and preparation method thereof

A technology for Portland clinker and Portland cement, which is applied in cement production and other directions to achieve the effects of good construction workability, low hydration heat, and reduced production costs.

Pending Publication Date: 2021-08-06
内蒙古宏尔高新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a composite cement with less Portland clinker component and its preparation method, which can solve the defects of existing ordinary Portland cement products and preparation methods, and the obtained Less Portland Clinker Component Composite cement uses less Portland cement clinker, which can save energy and limestone resources, and reduce CO 2 Discharge, greatly absorb industrial solid waste, reduce cement production cost; its preparation method is simple, easy to operate and implement, and easy to realize industrial application

Method used

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  • Composite cement with few silicate clinker components, and preparation method thereof
  • Composite cement with few silicate clinker components, and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036] A composite cement with less silicate clinker component, comprising the following various preparation raw materials by weight percentage:

[0037] Portland cement clinker and gypsum 20%, slag powder (granulated blast furnace water quenching slag) 30%, fly ash 20%, limestone powder 20% and aluminosilicate-based mineral powder (including solid waste) 10%. In addition, in terms of mass ratio, the alkali metal salt and alkaline earth metal salt binder account for 4% of the total mass of the composite cement with less silicate clinker components, that is, the total mass of the alkali metal salt and alkaline earth metal salt binder accounts for 4% of the total mass of the silicate clinker component. 4% of the total mass of salt cement clinker and gypsum, slag powder, fly ash, limestone powder and aluminosilicate-based mineral powder.

[0038] Among them, the mass ratio of Portland cement clinker and gypsum is 4:1. Portland cement clinker: 3CaO SiO 2 Mineral accounts for 55%...

Embodiment 2

[0043] A composite cement with less silicate clinker component, comprising the following various preparation raw materials by weight percentage:

[0044] Portland cement clinker and gypsum 25%, slag powder 25%, fly ash 17%, limestone powder 21%, aluminosilicate-based mineral powder (including solid waste) 12%. In addition, in terms of mass ratio, the alkali metal salt and alkaline earth metal salt binder account for 3% of the total mass of the composite cement with less silicate clinker components, that is, the total mass of the alkali metal salt and alkaline earth metal salt binder accounts for 3% of the total mass of the silicate clinker component composite cement. 3% of the total mass of salt cement clinker and gypsum, slag powder, fly ash, limestone powder and aluminosilicate-based mineral powder.

[0045] Among them, the mass ratio of Portland cement clinker to gypsum is 4:1. Portland cement clinker: 3CaO SiO 2 Mineral accounts for 55%, 2CaO·SiO 2 Minerals account for ...

Embodiment 3

[0055] A composite cement with less silicate clinker component, comprising the following various preparation raw materials by weight percentage:

[0056] Portland cement clinker and gypsum 12%, slag powder 30%, fly ash 25%, limestone powder 22%, aluminosilicate-based mineral powder (including solid waste) 11%. In addition, in terms of mass ratio, alkali metal salts and alkaline earth metal salt binders account for 2.5% of the total mass of the composite cement with less silicate clinker components, that is, the total mass of alkali metal salts and alkaline earth metal salt binders accounts for 2.5% of the total mass of the silicate clinker component composite cement. 2.5% of the total mass of salt cement clinker and gypsum, slag powder, fly ash, limestone powder and aluminosilicate-based mineral powder.

[0057] Among them, the mass ratio of Portland cement clinker to gypsum is 2:1. Portland cement clinker: 3CaO SiO 2 Mineral accounts for 55%, 2CaO·SiO 2 Minerals account fo...

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Abstract

The invention belongs to the technical field of cementing materials, and discloses a composite cement with few silicate clinker components, and a preparation method thereof. The composite cement with few silicate clinker components comprises the following preparation raw materials: silicate cement clinker, gypsum, slag powder, fly ash, limestone powder and aluminosilicate mineral powder; the use amount of silicate clinker in the obtained composite cement is small, the clinker component can be as low as about 30%, the total doping amount of mixed material components such as slag, fly ash, volcanic ash, industrial solid waste and limestone can be as high as about 70%, energy and limestone resources can be saved, and CO2 emission is reduced; meanwhile, a large amount of industrial solid wastes such as slag, fly ash and furnace bottom slag can be consumed, the environment is protected, and the cement production cost is reduced; and the preparation method is simple, easy to operate and implement and convenient for realizing industrial application.

Description

technical field [0001] The invention relates to the technical field of cementitious materials, in particular to a composite cement with less silicate clinker components and a preparation method thereof. Background technique [0002] Less clinker, more components, low cost, green and low carbon are one of the development directions and trends of general Portland cement. The low-silicate clinker component composite cement (hereinafter referred to as the low-clinker cement) is developed based on the theory of cement hydration, coagulation and hardening, and the use of alkali-activated cementitious materials and geochemical mineral polymer technology. , multi-component low-carbon environmental protection green products, which can increase the early and late strength of cement in a balanced manner, reduce the water demand of cement, improve the workability of cement, improve the compactness of cement concrete, save energy and limestone resources, reduce energy consumption, and re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26C04B7/24C04B7/19C04B7/21C04B7/36
CPCC04B7/26C04B7/24C04B7/19C04B7/21C04B7/36Y02P40/10
Inventor 刘炜峰赵云鹏
Owner 内蒙古宏尔高新材料科技有限公司
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