Coal-doped oil-making furnace slag mortar and preparation method thereof

Abstract

The invention provides coal-doped oil furnace slag mortar and a preparation method thereof, and belongs to the field of building materials, and the mortar comprises cement, coal-to-oil furnace slag subjected to surface treatment, sand and a composite excitant. According to the coal-to-oil furnace slag subjected to surface treatment, the surface roughness of the coal-to-oil furnace slag is reduced,the hydration degree of cement mortar can be improved, the compressive strength of the cement mortar is improved, and the fluidity of the cement mortar is improved. The composite activator can improve the crystallinity of a hydration product, refine the pore structure of the hydration product, improve the carbonization resistance of cement mortar and improve the durability.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a coal-to-oil slag mortar and a preparation method thereof. Background technique [0002] my country is a country rich in coal, poor in oil, and low in gas. At present, coal accounts for 70% of my country's total primary energy consumption. The direct combustion of coal not only emits a large amount of CO2, but also produces smoke and dust, which is also one of the important factors affecting the increase of suspended particulate matter in the atmosphere. The non-renewability of coal and the destructiveness of coal combustion to the environment determine that clean and efficient use of coal is an inevitable choice for human beings. Coal gasification is one of the effective means of clean coal utilization, and it is also the basis of modern coal chemical industry. Coal-to-methanol, coal-to-oil, coal-to-olefins and other modern coal chemical industries led by coal g...

AI Technical Summary

Problems solved by technology

[0003] In the process of coal gasification, a large amount of solid waste materials—waste residues are inevitably produced. The waste residues contain a variety of metal compounds. Long-term storage of them will occupy a large amount of land resources, and may cause land and water pollution. At the same time, waste residues The middle part is in the form of very fine particles, which will cause sand or dust storms under the action of the wind and cause air pollution

If it is not disposed of reasonably, it will cause certain harm to our living environment, and it will also require a huge cost to deal with them according to the usual stacking method.

Images