Non-autoclaved and unburned brick and preparation method thereof

Abstract

The invention belongs to the technical field of building materials, in particular to a non-autoclaved and unburned brick and a preparation method thereof. The non-autoclaved and unburned brick is characterized in that: the non-autoclaved and unburned brick is formed by stirring high phosphorus hematite tailing, cement, aggregate, gypsum, a compound admixture and water, pressing and curing, wherein the raw material of the high phosphorus hematite tailing accounts for 78 to 80 percent of the mass of the high phosphorus hematite tailing; the raw materials of the cement accounts for 10 to 15 percent of the mass of the cement; the raw material of the aggregate accounts for 5 to 10 percent of the mass of the aggregate; the raw material of the gypsum accounts for 2 to 4 percent of the mass of the gypsum; the adding amount of the compound admixture accounts for 2.01 to 2.07 percent of the cement amount (mass); and the adding amount of the water accounts for 10 to 15 percent of the total mass of the high phosphorus hematite tailing, the cement, the aggregate and the gypsum. In the method, the utilization rate of the high phosphorus hematite tailing is high; clay is not used; the formation of the brick is good; the cost is low; the brick is not required to be sintered; heat energy is not needed; a great amount of energy is saved; and the aim of energy conservation and emission reduction is achieved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a double-free brick and a preparation method thereof. Background technique [0002] With the continuous rapid growth of the steel industry, the demand for iron ore is increasing. The development of resources in various countries always follows the principle of getting rich first and then poor, and first easy and difficult. Therefore, the available iron ore resources tend to be poor, fine and miscellaneous. my country's iron ore resources are relatively rich, with various types of iron ore deposits, fine deposits, complex occurrence conditions, and many multi-component symbiotic iron ores. Therefore, in recent years, a large amount of high-quality iron ore has been imported, and with the sharp increase in the price of imported iron ore, great pressure has been placed on the development of my country's iron and steel industry. As high-phosphorus hematite is a rich ir...

AI Technical Summary

Problems solved by technology

[0005] The research, development and production of traditional building materials (solid clay bricks, etc.) consider material properties, consume a lot of energy and resources in the process of use and disposal, and seriously pollute the environment and endanger human survival; their common disadvantages are: complex manufacturing , time-consuming, energy and manpower, expensive equipment, large area, vulnerable to climate and air pollution, often deformed products

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