The lining material of the electric furnace used in different occasions is also different, and the following is to summarize the choice of the lining material of the electric furnace in the preheater, decomposition furnace, rotary kiln and other equipment. It's all right.

Because the use temperature of the furnace lining preheater is relatively low, it does not need to use a very expensive and good castable, and generally uses a cheaper alkal-resistant castable. As the phenomenon of crust and clogging is easy to occur in the production of calciner, it is recommended to use castable with anti-crust. The equipment scour at the front and back of the kiln is relatively strong, which generally needs to use steel fiber castable, kiln castable, corundum castable, etc. The production temperature of the kiln door cover is high, the use of ordinary castable can not resist, generally need to choose high aluminum and low cement castable or steel fiber castable; Coal injection pipe equipment for castable selection. To be strict, it is generally necessary to use corundum castable or use its special castable. When choosing electric furnace lining material, we should not only pay attention to the brand, but more importantly, we should pay attention to its quality, and choose the right castable to be used in the corresponding equipment, which are indispensable.

The new development of refractory mold technology is mainly manifested in the following aspects: mold processing machinery; Mold materials and heat treatment of new technology development CAD/CAM. In recent years, in order to meet the needs of multi-variety small-batch and single-piece production, Japanese mold manufacturers have generally adopted CNC machine tools and machining centers, which can improve production efficiency and product accuracy. The machining center has comprehensive machining function, strong cutting function and automatic tool replacement function, which is very suitable for metal mold processing. In order to adapt to the requirements of mold efficiency, high-precision processing, and extending the working life of molds, Japan attaches great importance to the development of new materials and heat treatment technology for molds. Such as high-performance steel cemented carbide, it not only has the high hardness of cemented carbide, high wear resistance, but also has the thermal processing properties of ordinary steel, can be forged, welded, and small deformation. Compared with tool steel, the die life can be increased tens or even hundreds of times. In addition, the steel cemented carbide after forging, especially through boronizing and other heat treatment, the die life can be increased by about 10 times. While developing new materials, some new heat treatment processes have also been developed and applied, such as the use of cryogenic treatment, CND, PVD coating on easily worn surfaces, etc., and the coating treatment of hard probes on the mold surface can also be achieved. These measures can achieve good results. In addition, the vacuum heat treatment can also significantly improve the quality of the mold.

Refractory materials can be obtained by CAD system. The best mold structure can screen the scheme, optimize the design, and improve the calculation and design efficiency. CAD system has the following three functions: to establish the three-dimensional shape simulation function, the use of numerical model numerical analysis function, the mold processing movement simulation function. The use of CAM system can improve production efficiency and product accuracy.