Application Field of Light-burned Magnesium Balls in Light-burned Magnesium Oxide

Light burnt magnesia ball is made of ordinary light burnt magnesia powder, which is mixed and pressed. Mainly used for converter steelmaking, slag splashing protection, can improve the converter life.

The preparation of light-burned magnesia is that 80% light-burned magnesia powder is added to 20% water, put into a mixer for rolling, stirring, mixing for 15-20 minutes to form a mixture, and the product is prepared by a belt conveyor and a balling machine, and then stacked. The finished product of light burnt magnesia ball is dried in shade for 48 hours and forms strength for sale. Light burnt magnesia ball is used as slag protection component regulator for slag splashing protection of converter. Because slag splashing protection requires proper viscosity and refractoriness of slag, reasonable slag composition is the key to implement slag splashing protection. Generally, slag can not be splashed directly. It needs to be adjusted by adding a certain amount of magnesia sphere. At the same time, it can replace dolomite to reduce slag quantity and increase MgO content in slag. Because MgO is a high melting point mineral, the melting point is 2800 C, and the content of MgO in slag is increased, the slag viscosity and refractoriness are increased. It is easier for the slag to combine with the lining and form an effective slag protective layer on the lining, so as to improve the lining life and reduce consumption. After adopting this technology, a steel company in the United States has reached nearly 20,000 boilers, and the operation rate of converter reaches 97%. West Germany, South Korea, Japan and Taiwan are all implementing this technology. Many iron and steel enterprises are actively developing their own slag splashing furnace protection technology, including Taiyuan Iron and Steel, Chengdu Iron and Steel, Chongqing Iron and Steel, Masteel, etc. Since the adoption of slag splashing furnace protection technology, the maximum furnace life has increased from 1500, 500, 700, 1100 to 12000, 1500, 8500 `10200', respectively, and great economic benefits have been achieved.

Light burnt magnesia ball is made of ordinary light burnt magnesia powder, which is mixed and pressed. Mainly used for converter steelmaking, slag splashing protection, can improve the converter life.

The preparation of light-burned magnesia is that 80% light-burned magnesia powder is added to 20% water, put into a mixer for rolling, stirring, mixing for 15-20 minutes to form a mixture, and the product is prepared by a belt conveyor and a balling machine, and then stacked. The finished product of light burnt magnesia ball is dried in shade for 48 hours and forms strength for sale. Light burnt magnesia ball is used as slag protection component regulator for slag splashing protection of converter. Because slag splashing protection requires proper viscosity and refractoriness of slag, reasonable slag composition is the key to implement slag splashing protection. Generally, slag can not be splashed directly. It needs to be adjusted by adding a certain amount of magnesia sphere. At the same time, it can replace dolomite to reduce slag quantity and increase MgO content in slag. Because MgO is a high melting point mineral, the melting point is 2800 C, and the content of MgO in slag is increased, the slag viscosity and refractoriness are increased. It is easier for the slag to combine with the lining and form an effective slag protective layer on the lining, so as to improve the lining life and reduce consumption. After adopting this technology, a steel company in the United States has reached nearly 20,000 boilers, and the operation rate of converter reaches 97%. West Germany, South Korea, Japan and Taiwan are all implementing this technology. Many iron and steel enterprises are actively developing their own slag splashing furnace protection technology, including Taiyuan Iron and Steel, Chengdu Iron and Steel, Chongqing Iron and Steel, Masteel, etc. Since the adoption of slag splashing furnace protection technology, the maximum furnace life has increased from 1500, 500, 700, 1100 to 12000, 1500, 8500 `10200', respectively, and great economic benefits have been achieved.

However, the quality of light burnt magnesia balls varies from raw material selection to product manufacturing and processing to transportation and sales. The pace of each company's progress is inconsistent, leading to customers and enterprises can not maximize the benefits. Some products produced by old production lines without modification have low ball forming rate. After the raw materials are processed by ball pressing machine, half are products and half are powder particles, which need to be manually returned to ball pressing machine for further processing; the sphere is loose. Low density, low strength, easy to break. Especially when loading, unloading, transportation, extrusion and falling, the sphere is prone to break and the shape of the sphere is incomplete. Some are hemispheres, some are one-third of the ball, some are missing angles, different shapes, dull surface, poor appearance image; users are not satisfied. In the products sold, there are 20% - 35% small particles and powder mixtures, which users have repeatedly raised objections to; the most important thing is to increase customer costs and serious damage to the life of converter lining. Because of the loose, low density and low strength of lightly burned magnesium spheres, the spheres are liable to break up during loading, unloading, transportation, extrusion and drop. Therefore, when the light burnt magnesia ball is fed into the steelmaking furnace and the repayment is in contact with molten steel, the partially broken particles and powder particles are sucked out by the strong negative pressure exhaust system on the top of the converter, collected by the electrostatic precipitator in the chimney and treated separately as waste, which results in the following three results: increasing the damage degree of the lining of the converter, increasing the damage degree of the exhaust system equipment, and increasing the damage degree of the exhaust system equipment. Consumption of lightly burned magnesia spheres per ton of steel.