History of refractories
More than 4000 years ago, China had used less clay, made pottery, and had been able to cast bronze. In the Eastern Han Dynasty (AD 25~220) has been used to make clay refractory kiln firing porcelain material and sagger. In the early twentieth Century, refractories developed towards high purity, high density and ultra-high temperature products. Meanwhile, unshaped refractory and high refractory fiber (industrial kiln for over 1600 degrees) were developed without burning and energy consumption. The former, such as aluminum oxide refractory concrete, is often used in the two section reformer wall of the synthetic ammonia plant of a large chemical plant, which has a good effect. Since 50s, the rapid development of atomic energy and space technology, the development of new energy technology, requires the use of special refractory material of high temperature resistance, corrosion resistance, thermal shock resistance, erosion has excellent properties, such as melting point above 2000 DEG C, oxide refractory compounds and high temperature composite refractory materials.
The refractory material of the Renaissance of ancient, medieval, before and after the industrial revolution, blast furnace, coke oven, hot blast furnace refractories, the late modern new refractory materials and manufacturing technology, modern manufacture technology of refractory materials and main technical progress, and prospects for the future development of refractories, refractories and high temperature technology accompanied by the emergence of generally originated in the Middle Bronze age. In the Eastern Han Dynasty has made Chinese kiln firing porcelain material and with fireclay refractory sagger. At the beginning of twentieth Century, refractories developed towards high purity, high density and ultra high temperature products. Meanwhile, there was no need for firing and energy consumption for the refractory and refractory fibers. With the development of modern technology, atomic energy, space technology, new energy technology, refractory material having high temperature resistance and corrosion resistance, thermal shock resistance, erosion resistance and other comprehensive excellent performance has been applied.