Energy-saving heat retaining rectangular-hole porous brick

Abstract

The invention discloses an energy-saving heat retaining rectangular-hole porous brick, prepared through the following steps of: 1) charging coal gangue into a hopper and conveying the same to a raw material processing workshop through a belt conveyor, and then crashing the coal gangue by a hammer mill and screening the same by a rotary screen or a vibrating screen to form coal gangue powder; 2) feeding the coal gangue powder together with building wastes, slags, sludge and water to perform primary stirring and then feeding the mixture to an aging chamber for aging; 3) conveying the aged material to perform secondary stirring and producing green bricks in a vacuum brickmaking machine by the belt conveyor; 4) stacking the green bricks on a kiln car by a hydraulic automatic setting machine and then feeding the green bricks into a drying cavity for drying; and 5) conveying the dried green bricks to the opening of a tunnel kiln by a ferry vehicle and then lifting the green bricks in the kiln for sintering, thereby obtaining finished products of bricks, wherein the bricks comprise the following raw materials by weight percent: coal gangue powder 70-80%, building wastes 5-10%, slags 8-13%, sludge 2-6%, and the balance of water. The energy-saving heat retaining rectangular-hole porous brick is high in strength, high in voidage, low in dead load, good in sound isolation and excellent in heat retaining performance.

Description

technical field [0001] The invention relates to a brick, in particular to an energy-saving and heat-retaining brick with rectangular holes. Background technique [0002] Rectangular hole perforated bricks (over 30% void rate) and rectangular hole hollow bricks (over 40% void rate) are a major product of new wall materials, and are wall materials encouraged by the state. [0003] The current single coal gangue or silt raw materials for making bricks cannot fully meet the brick-making requirements in terms of calorific value. From the perspective of chemical composition, the physical and chemical properties of individual raw materials are not good enough. Among them, AI 2 o 3 、sio 2 Content also does not reach optimal index. [0004] At the same time, affected by the existing sintering process, the strength of the product is not high enough, the void rate is not large enough, the self-weight is not light enough, and the thermal insulation performance is not ideal enough. ...

AI Technical Summary

Problems solved by technology

[0003] The current single coal gangue or silt raw materials for making bricks cannot fully meet the brick-making requirements in terms of calorific value. From the perspective of chemical composition, the physical and chemical properties of individual raw materials are not good enough. Among them, AI 2 o 3 、sio 2 The content is also not up to the optimal index

[0004] At the same time, affected by the existing sintering process, the strength of the product is not high enough, the void rate is not large enough, the weight is not light enough, and the thermal insulation performance is not ideal enough.

Images