What is the standard size of red brick?

Ordinary sintered brick (red brick), also called standard brick, has a size of 240* 1 15*53. (mm) The color is bright red and sometimes dark black.

Red brick is a kind of sintered building brick made of clay, shale and coal gangue. , it is crushed, kneaded and shaped by manual or mechanical pressing, dried and fired with oxidizing flame at about 900 degrees Celsius. It was invented by Babylonians in Cuba.

Extended data:

Form:

When producing bricks, the bricks are usually burned thoroughly from the inside out by fire, and then the fire is turned off to let the kiln and bricks cool naturally. At this time, the air in the kiln circulates, and the oxygen is sufficient, forming a good oxidation atmosphere, so that the iron element in the brick is oxidized into iron oxide. Because iron oxide is red, it will be red.

If water is continuously poured into the kiln after the brick is burnt out, at this time, due to the high temperature in the kiln, the water will quickly turn into steam, which will hinder the circulation of air and form an anoxic environment in the kiln, and the iron trioxide in the brick will be reduced to ferrous oxide and exist in the brick. Because ferrous oxide is blue-gray, bricks will be blue-gray.

Modern technology:

The industrialized production of red bricks has basically realized mechanization and automation, and the manufacturers have a high degree of modernization. The process is usually as follows:

Supply and processing of raw materials

The mined raw materials are piled up and aged, then added to the chain plate feeder with a forklift, and sent to the roller press with a belt conveyor for crushing. The internal combustion pulverized coal slag is also sent to a roller press through a belt by a coal blending machine for mixing and crushing, and then screened by the roller press. The coarse materials on the screen are sent back by the belt conveyor for repeated crushing, and the screened raw materials are sent to the storage bin by the belt conveyor for standby.

References:

Baidu encyclopedia-red brick