Light burned magnesium balls under new technology

Light burned magnesia ball is made of ordinary light burned magnesia powder and mixed with compressed ball. It is mainly used for converter steelmaking, slag splashing and furnace protection, which can improve converter life. The preparation of light magnesia ball is to add 80% light magnesia powder to 2O% water and put into a mixer to crush, stir and mix 15 ~ 2Omin to form a mixture. The products of light burned magnesia ball were dried after 48h and formed strength to prepare for sale.

Light burned magnesia ball is used as slag regulator for slag splashing in converter. Because slag splashing is required for slag to have proper viscosity and refractoriness, reasonable slag composition is the key to slag splashing. The slag can not be directly carried out in a splash furnace. A certain amount of Magnesium Oxide ball should be added to adjust it, and the use of dolomite can be replaced, and the amount of slag can be reduced and the content of MgO in the slag is increased.

Since MgO is a high melting point mineral, the melting point is 2800 C and the content of MgO in the slag is improved, the slag viscosity becomes larger and the refractory degree is increased. The slag is more easily combined with the furnace lining, and the effective slag protection layer is formed on the lining, thus improving the life of the furnace lining and reducing the consumption.

After adopting this technology, a Steel Corp in the United States has nearly 20000 furnace life and 97% of the converter operation rate. West Germany, South Korea, Japan and Taiwan are all implementing this technology. Many iron and steel enterprises are also actively developing their own slag splashing technology, including TSCC, steel, heavy steel, Masteel and so on. Since the use of slag splashing technology, the maximum furnace age has been increased from 1500, 500, 700, 1100 to 12000, 1500, 8500, 10200.

   However, the quality of the light burned magnesium ball on the market is uneven, from the selection of raw materials to the production and processing of the products, and then to the transportation and sales. The pace of the progress of each company is not consistent, which leads to the maximization of the interests of the customers and enterprises. Some of the products that have not been converted to old production lines have low ball rate. After the raw material is processed by a ball press, half of the products are made of products and half of them are granules. The powder needs to be returned manually to the ball pressing machine, and the ball is loose. The density is small, the strength is low, and it is easy to break. Especially when loading and unloading, transportation, extrusion and falling, the sphere is easy to break, and the shape of the ball is incomplete. Some are half balls, some are 1/3 balls, some of them are different in shape and shape, the surface is lustrous and the appearance is poor. Users are not satisfied. In the products sold, the users have objected to the mixture of 2O%-35% small particles and powder particles. The most important thing is to increase the customer's cost and to have serious damage to the life of the lining of the converter. As the light magnesia ball ball is loose, small density, low intensity, and when loading and unloading, transporting, squeezing and falling, the ball is loaded. Easily broken. Therefore, when the light burning magnesium ball is sent to the steelmaking furnace and has not been contacted with the molten steel, the partially broken particles and particles are collected and treated as waste by the electrostatic precipitator in the chimney, resulting in the following 3 results to increase the damage process of the converter lining masonry. To increase the damage degree of the exhaust system equipment and increase the consumption of light burned magnesia balls per ton of steel.