Fireclay Brick

Fireclay Brick  (including shale, coal gangue powder) as the main raw material, through the mud treatment, forming, drying and roasting and

Clay bricks fell parabolic clay bricks fell paraboloid

. In the spring and autumn and the Warring States period Chinese have created a square and brick, brick making technology in Qin and Han Dynasties and the scale of production, quality and variety had significant development, known as "Qin Han watt brick". Common brick with dimensions of 240 mm x 115 mm x 53 mm, according to the compressive strength (Newton / mm, N/mm2) size is divided into MU30, MU25, MU20, MU15, MU10, MU7.5 this 6 strength grades. Clay brick materials, cheap, durable, and fire prevention, heat insulation, sound insulation, moisture absorption and other advantages, is widely used in civil engineering. Aggregate crushed bricks can also be of concrete. In order to improve the common clay brick is small, since the major soil depleting many disadvantages, positive light, high strength, large hollow, the direction of development. The sand lime brick at a proper ratio of lime and quartz sand, sand or fine sandstone, fine grinding, Kazumi Wa, semi dry pressing molding and after autoclaved curing and. Fly ash brick using fly ash as the main raw material, the incorporation of coal gangue powder or clay cemented material, through mixing, molding, drying and roasting and into, can make full use of industrial waste, saving fuel.

The Al2O3 content of clay brick Chinese generally in more than 40%, the content of Fe2O3 is less than 2 ~ 2.5%. The ingredients of the clinker is 65 ~ 85%, 35 ~ 15% with clay. Will be crushed and milled with clinker clay mixed grinding, again with the particle clinker together formulated as semi dry mud, high pressure forming, sintering at about 1400 DEG C, better performance. Clay bricks under high temperature is acidic, alkaline slag erosion resistance ability is a bit poor, but with the Al2O3 content increased. The thermal stability of silica brick, magnesia brick (see magnesia brick) as well.

Quality of blast furnace clay brick by phosphoric acid impregnated products after drying vacuum phosphate impregnation, two low-temperature firing, used in blast furnace upper shaft lining.

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Created on Dec 31st 1969 18:00. Viewed 0 times.

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