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Responding to the national call, Ke Xin New Materials held a launching meeting for clean production.
On August 7, 2019, Ke Chuang Xin Cai held a "Clean Production Launch Meeting," led by national clean production auditor Bei Zheng. Chairman Wei Wenxu, General Manager Ma Junqiang, and others attended the meeting.
Method for preparing castable refractory for electric furnace covers
Electric furnace covers generally use high-alumina refractory materials. In the past, electric furnace covers were mostly built with refractory bricks, but now most use high-alumina castables for on-site casting or prefabrication off-site.
Refractory material used for electric furnace lid
The electric furnace cover (also known as the triangular area of the electric furnace roof) is subjected to high temperatures and frequent rapid cooling and heating, so it not only needs to be high-temperature resistant but also needs to have a certain degree of thermal shock resistance. Generally speaking, the degree of volume change caused by temperature changes in a substance is closely related to the substance's thermal expansion coefficient, thermal conductivity, elastic modulus, and inherent strength.
The function and damage mechanism of permeable bricks
Permeable bricks are functional components installed at the bottom of a steel ladle, used to inject inert gases (such as argon) into the molten steel within the ladle. Before using permeable bricks, it's crucial to understand their function and failure mechanisms to reduce wear and tear and save costs.
The porous core is an important component of refined refractory materials. In most out-of-furnace refining equipment, porous bricks are used to blow in inert gases (such as argon) to enhance the stirring of the molten pool and ensure uniform temperature and composition. The porous core plays a very important role in out-of-furnace refining.
Bottom-blown argon technology for steel ladle permeable bricks
Argon blowing usually refers to installing one or several porous bricks at the bottom of a casting ladle or brick-lined ladle. After steel tapping, argon is blown in through the porous bricks to stir the molten steel in the ladle. Generally, manufacturers use porous brick argon blowing technology in continuous casting, which can adjust the temperature of the molten steel.
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