White cement produced by utilizing industrial waste residues and preparation method thereof

Abstract

The invention discloses white cement produced by utilizing industrial waste residues and a preparation method thereof. The preparation method mainly comprises the steps of material preparation, material mixing, formation, drying and calcination, grinding and the like and is characterized in that putty powder waste residues are selected as auxiliary raw materials and are mixed with alkaline residues discharged from a crystal soda plant together, their chemical components plays mutual effects, and CaO, SiO2 and AI2O3 are bonded with calcium chloride to make calcium chloride ion groups replace part of silicate ion groups so as to better whiten the alkali residues. The white cement is superior in performance, large in specific surface area, good in abrasion resistance and high in strength andcan be used for decoration and coating of constructional engineering. Compared with existing produced traditional white cement clinker, 80% of energy can be saved, CO2 and SO2 discharging amount can be decreased by 90%, the technical problem is solved that at present, white cement products cannot be greatly produced by using alkaline residues, and resourceful and comprehensive utilization of wasteresidues and cyclic economic development are promoted.

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...

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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

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