Utilizing industrial waste slag and alkali slag to produce white cement and its preparation method

A technology for white cement and industrial waste residue, applied in the field of environmentally friendly cement, can solve problems such as the production of white cement products from waste residue and alkali residue, and achieve the effects of improving the strength performance of white cement, strong thermal insulation and moisture resistance, and reducing CO2.

Active Publication Date: 2021-09-03
淮安市水泥厂有限公司 +1
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned technical defect that white cement products cannot be produced with waste slag and alkali slag, provide a kind of key technical problems such as whiteness of white cement, cement strength, etc. , strength and other properties have been improved, and further meet the white cement used in construction engineering decoration, whitewashing walls, etc. The method of using alkali slag to make white cement products

Method used

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  • Utilizing industrial waste slag and alkali slag to produce white cement and its preparation method
  • Utilizing industrial waste slag and alkali slag to produce white cement and its preparation method

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Embodiment Construction

[0013] The present invention is a method for making white cement products from alkali slag, and mainly uses a more suitable seed powder as an auxiliary raw material. The specific method includes the following steps:

[0014] A. Raw material preparation: the main raw material is the alkali slag discharged from the industrial production stone soda factory minus the free water as required, and the auxiliary raw material is the waste slag and seed powder discharged from the chemical industry;

[0015] B. Ingredients: the alkali slag is calculated as 95-98% by weight percentage, and the ratio of seedling powder as 2-5% by weight percentage is calculated as 100% raw materials to be mixed into a mixture;

[0016] Such as example 1, get alkali slag and calculate by weight percentage to be 95%, and seed powder is calculated by weight percentage to be 5%;

[0017] For example 2, get the alkali slag and calculate it as 98% by weight percentage, and the seed powder is calculated as 2% by ...

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Abstract

The invention discloses a white cement made from industrial waste slag and alkali slag and a preparation method thereof, which mainly includes the steps of material preparation, batching, molding, drying, roasting, and grinding. The alkali slag discharged from the stone soda plant is mixed together, so that the chemical components in it interact with each other, and CaO, SiO2, AI2O3 and calcium chloride are combined with each other, so that calcium chloride ion groups replace part of the silicate ion groups , so that the alkali slag can be better turned white, and its product has superior performance, high specific surface area, good wear resistance, high strength, and can be used for construction engineering decoration and stuccoing materials. Compared with the existing production of traditional white cement clinker, it can save 80% energy, reduce CO2 and SO2 emissions by 90%, solve the technical problem that the current alkali slag cannot produce white cement products in large quantities, and is conducive to the comprehensive utilization of waste slag resources Circular economy development.

Description

technical field [0001] The invention relates to a method of white cement made of waste slag and alkali slag as a raw material. It is a new method for directly harmless treatment of alkali slag and other waste slag, and belongs to the field of environmentally friendly cement. Specifically, it uses industrial waste slag Production of white cement from alkali slag and its preparation method Background technique [0002] With my country's intensification of reform and opening up and the development of large-scale industrial projects, a large amount of industrial waste residues have been discharged. For example, the annual discharge of waste residues and alkali residues in my country is about 76 million tons, all of which are landfilled, causing serious pollution. Groundwater resources have caused a certain impact on environmental quality, and the harmless treatment of alkali slag is particularly important. [0003] Judging from the situation at home and abroad, there is basicall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/06C04B7/36
CPCC04B7/06C04B7/36
Inventor 谭纪林华建军华玉海曹敏谭伟牛成徐学成张会明陈阳
Owner 淮安市水泥厂有限公司
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