Method for producing low-temperature cement clinker from straw ash

Abstract

The invention relates to a method for producing low-temperature cement clinker from straw ash, which mainly comprises the following steps of: feed preparation, burdening, pelletizing, steam curing, low-temperature calcining, grinding and the like. Cement of the low-temperature cement clinker, which can be comparable to the cement of Portland cement clinker, is produced by taking dry and wet strawash as a main raw material and steel slag and aluminum slag as auxiliary materials, and the cement of the low-temperature cement clinker has various characteristics of high cement strength, high concrete compatibility, good abrasion resistance, low hydration heat, minimum inflation, freezing resistance, corrosion resistance and the like. The low-temperature cement clinker can be directly used forengineering construction of dams, underwater constructions, roads, bridges, civil constructions and the like. The method for producing the low-temperature cement clinker from the straw ash also has the advantages of simple and reasonable process, low energy consumption, high benefit, investment saving, no secondary pollution, environmental protection and the like. Compared with regular cement produced by traditional methods, the investment is saved by 80 percent, the cement cost is reduced by 60 percent, the energy consumption is reduced by 80 percent, the carbon dioxide emission is reduced by 80 percent, the straw ash and other industrial waste residues can be largely digested, and the environmental pollution is reduced. The method for producing the low-temperature cement clinker from the straw ash is a good method which is favor of protecting environment and is capable of turning waste into wealth.

Description

technical field [0001] The present invention is a method for producing a new type of low-temperature cement clinker by using straw ash, steel slag and aluminum slag, especially for the current power plants using various plant stalks, such as rice straw, wheat straw, rice husk, corn straw, soybean straw, The dry and wet waste residue discharged after the burning of tree bark and other materials for power generation is called straw ash, which is a harmless treatment method that uses advanced technology to produce a new type of low-temperature cement clinker from straw ash, which belongs to green environmental protection or cement field. Background technique [0002] From the situation at home and abroad, in the 1970s, the United States began to develop and utilize straw ash in the industrially developed countries, and then Japan, Australia, New Zealand, India, Thailand, etc. studied straw ash and used it to mix cement and concrete admixtures. Studies have reported that the ut...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the above-mentioned straw ash will cause serious pollution to air and water sources, and to provide a kind of advanced and reasonable technology, low energy consumption, high benefit, low investment, no secondary pollution, and beneficial to the large-scale use of straw ash. Method for producing low-temperature cement clinker from environmentally friendly straw ash

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