Method for using blast furnace slag to produce micro-crystalline light brick

Abstract

The invention discloses a method for using blast furnace slag to produce a micro-crystalline light brick. The light brick uses the blast furnace slag as main raw material. The method for using the blast furnace slag to produce the micro-crystalline light brick includes that tempering and clearing the blast furnace slag to obtain slag with qualified ingredients, feeding to a water quenching pool to form micro-crystalline particles through water quenching, grinding and sieving the micro-crystalline particles to obtain micro-crystalline particles with proper granularity, uniformly mixing with foaming agent, putting the mixture in a casting mould, and sintering to form the micro-crystalline light brick with uniform air bubbles and stable ingredients. Compared with the traditional clay brick, the micro-crystalline light brick has lower density and higher intensity, so that the micro-crystalline light brick has better bearing ability, and moreover, the micro-crystalline light brick has good heat preservation effect and sound insulation effect due to the uniform air hole structure, so that the micro-crystalline light brick can replace the clay brick or ordinary light brick in a certain degree to serve as novel building material.

Description

technical field [0001] The invention relates to the technical field of engineering materials, in particular to a method for producing microcrystalline lightweight bricks by using blast furnace slag. Background technique [0002] Clay bricks are man-made small blocks used in construction. Also known as sintered bricks. Solid clay bricks are one of the oldest building materials in the world. From the Mausoleum of the First Qin Emperor to the Great Wall of Ming and Qing Dynasties, it has inherited the history of architectural civilization of the Chinese nation for thousands of years. So far, it is still the favorite building material of Chinese people. But, because the manufacture of clay brick needs a large amount of land, can destroy a large amount of land resources. Therefore, the government promulgated the "Banning and Limiting Solid" order, stipulating that the burning of clay bricks to build houses is prohibited nationwide, the use of solid clay bricks is prohibited in...

AI Technical Summary

Problems solved by technology

The current blast furnace slag treatment process basically adopts the water flushing slag process, and the obtained products are basically used in cement production, and the blast furnace slag used as raw material for cement production has almost no profit at all.

At the same time, every ton of high-temperature slag with a temperature of 1450-1550 °C needs to consume 1.2 tons of new water for quenching, and a large amount of waste water, corrosive hot steam and heat cannot be recovered. At the same time, a large amount of water resources used cannot be recycled and reused. The large amount of sensible heat and latent heat that exists is difficult to be effectively recycled

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