History Of Refractory Materials

- Jul 24, 2018 -

More than 4,000 years ago, China used clay with less impurity, burned pottery and cast bronze. The Eastern Han Dynasty (A.D. 25~220) has used clay refractories to cook porcelain kiln materials and bowls. At the beginning of 20th century, refractory materials to high purity, high density and ultra-high temperature products in the direction of development, at the same time developed a complete no burning, small energy consumption of amorphous refractories and high refractory fiber (for more than 1600 ℃ industrial furnace). The former, such as alumina refractory concrete, is often used in the two-stage reformer inner wall of the ammonia production plant of large chemical plant, and the effect is good.

Since the 50, the rapid development of atomic energy technology, space technology and new Energy development technology require the use of high temperature, anti-corrosion, heat shock, scour and other special refractories with comprehensive performance, such as the melting point of more than 2000 ℃ oxides, refractory compounds and high-temperature composite refractories. Ancient, Medieval, Renaissance refractory, before and after the Industrial Revolution, blast furnace, coke oven, hot stove refractories, the late modern refractory and its manufacturing process, modern refractory manufacturing technology and major technological progress, as well as the future development of refractory materials, refractory and high-temperature technology accompanied by, Roughly originated in the middle of the Bronze Age. In the Eastern Han Dynasty, Clay refractories were used as kiln materials and bowls for burning porcelain. In the early 20th century, refractory materials to high purity, high density and ultra-high temperature products in the direction of development, at the same time there is no need to burn, small energy consumption of amorphous refractories and refractory fibers. In modern times, with the development of atomic energy technology, space technology and new energy technology, refractories with high temperature, corrosion resistance, thermal shock resistance and scour resistance have been applied. There are many factories producing refractory products in China. China has a wealth of resources, and for this reason, major foreign investors have also come to China to show their skills. In the northeastern part of China, where refractory suppliers are extremely lush, other foreign investors have raised questions about the low prices of their exports, raising the EU's anti-dumping on China's refractory products in 2003, limiting exports to the EU. 2006 China to protect the massive loss of raw material resources, some sectors of the tax rebates, so as to greatly limit the export of products. But this does not largely limit the sales of some foreign brands, because they have dozens of or even hundreds of years of sales experience, and have a huge market share, but also created their brand effect on various continents.