Method of producing haydite for thermal insulation block by utilizing steel slag quenched with wind

Abstract

The invention discloses a method of producing haydite for a thermal insulation block by utilizing steel slag quenched with wind. The method comprises the following steps: 1) weighing raw materials according to mass weight; 2) grinding the raw materials in a grinder into powder in a mixing mode, stirring in a stirrer, adding water, and continuously stirring in the stirrer; 3) then pelletizing on a high-pressure twinroller machine to obtain a spherical granular raw meal; 4) enabling the obtained spherical raw meal to enter a drying system, raising the temperature of a pellet, and then drying; 5) underfiring by a rotary kiln; and 6) finally, roasting at a high temperature, and cooling to obtain steel slag haydite. According to the method disclosed by the invention, the produced hollow block has the performances of thermal insulation, seismic resistance, freezing resistance, fire resistance and the like and is also capable of solving the problem that the steel slag piles up to pollute the environment at present and increasing the added value of steel slag utilization. Meanwhile, the method is simple in process and low in cost, is environmentally friendly and saves the energy.

Description

Technical field [0001] The invention belongs to the technical field of metallurgical slag treatment and resource utilization, and specifically refers to a method for producing ceramsite for thermal insulation blocks by using air-quenched steel slag. Background technique [0002] In recent years, ceramsite, as a new type of building materials industry, has developed vigorously. This is mainly manifested as: ①The raw materials used have broken through the gravel (artificial sand or river sand), and industrial wastes such as fly ash, cinder ash, construction waste, blast furnace slag, and metallurgical tailings have been gradually developed; ②The preparation method has also appeared There are many types of sintered, high-temperature thermal expansion and non-fired types; ③The application fields range from the initial block and lightweight aggregate concrete to the sewage treatment filter material, soilless cultivation, greening, permeable concrete and many other fields. Ceramsite h...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for producing ceramsite for thermal insulation blocks by using wind-quenched steel slag. The hollow blocks produced by this method have properties such as thermal insulation, shock resistance, frost resistance, and fire resistance, and solve the problems caused by the accumulation of steel slag at present. The problem of environmental pollution increases the added value of steel slag utilization. At the same time, the production method is simple, energy-saving and environmentally friendly, and low in cost.