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Refractory products are nonmetallic materials that withstand severe high temperature service conditions. They must resist chemical attack; withstand molten metal and slag erosion; endure thermal shock, physical impact, catalytic heat; and other rigorous conditions. Generally, refractory products are needed in processes where temperatures exceed 700°F. Some applications call for service temperatures of 3500°F or higher. Refractory products are, in many cases, the only materials that can contain or control high temperature processes.

Refractories line the furnaces and smelters that refine steel, copper, aluminum, and other metals. They are used in cement kilns and glass furnaces, as well as in petroleum cracking and processing. Power generators, boilers, and other combustion equipment all use refractories. Refractories have been used by humankind since earliest recorded history. When humans first began to smelt metals and shape primitive knives, hunting weapons, and ornamental rings and jewelry, crude refractory materials were developed to facilitate the pyroprocessing of the ores. As refractory practice developed, materials evolved which were ever more durable, lasting longer and longer before replacement was necessary.

Changxing Refractory is a Chinese leading refractory and oil fracturing proppant manufacturer & supplier with a wide range industries in high temperature field . From a refractory firebrick china manufacturing factory, Changxing has become a professional manufacturer with various refractory materials and oil fracturing proppant both in domestic and international market during 30+ years, whose customers covers North America, Middle East, Asia, Africa, etc.