Light burnt magnesia powder

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Dashiqiao Hongkai Refractories Co., Ltd.


Contact number: +86-13841720502


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Site: Nanlou Economic Development Zone, Dashiqiao City, Liaoning Province


Office Address: Building No. 5, Fenghua Yihe Village, Dashiqiao City, 105


Special Use of Reburned Magnesium Powder as Refractories

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Special Use of Reburned Magnesium Powder as Refractories

Date:2017-05-06 author: click:

Special Use of Reburned Magnesium Powder as Refractories




As the lining and furnace body of thermal equipment, baking should be carried out before the first use, so that the physical water and crystalline water can be removed step by step and sintered to a certain extent, so that its volume and some properties can reach the stable state in use. The baking system has a great influence on the service life. The basic principle of the baking system should be that the heating rate corresponds to the dehydration and other phase change and deformation that may occur. In some temperature stages where the above changes occur sharply, the temperature should rise slowly or even keep warm for a considerable period of time. If improper baking or rapid heating without baking is put into use, serious cracks will easily occur, even loose collapse, and even explosion may occur in the extra-thick part of the special Ben.




In addition, refractory castables generally have high ambient temperature strength and can be made into prefabricated parts for installation in kiln rotary worksite, such as refractory castable weir plate prefabricated parts for continuous casting of tundish. Refractory castables are mainly used in metallurgical industrial kilns, and are also widely used in petroleum, chemical, building materials, electric power and mechanical industrial kilns and thermal equipment.




As the lining and furnace body of thermal equipment, baking should be carried out before the first use, so that the physical water and crystalline water can be removed step by step and sintered to a certain extent, so that its volume and some properties can reach the stable state in use. The baking system has a great influence on the service life. The basic principle of the baking system should be that the heating rate corresponds to the dehydration and other phase change and deformation that may occur. In some temperature stages where the above changes occur sharply, the temperature should rise slowly or even keep warm for a considerable period of time. If improper baking or rapid heating without baking is put into use, serious cracks will easily occur, even loose collapse, and even explosion may occur in the extra-thick part of the special Ben.




The refractory castables made of high-quality granular and powdered materials with high alumina content and sintered well can be used in parts eroded by molten iron, molten steel and slag, such as tapping trough, ladle, blast furnace body, tapping trough, etc. For example, phosphate refractory castables can be widely used in heating furnaces and soaking furnaces for heating metals, coke ovens and cement kilns where materials are directly in contact. In some parts of metallurgical furnaces and other containers which are in direct contact with slag and molten metal, the use of high-quality phosphate refractory castables for repairing also has a good effect. It is more suitable to use phosphate refractory castable in some parts where the working temperature is not very high and the wear resistance is high. If corundum refractory material is used to make refractory castable, it is generally effective to use it in reducing atmosphere.

Reburnt magnesia powder

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