Tap hole clay is a refractory product that must be used at the taphole of a large blast furnace. Yuying specializes in producing various types of taphole clay, supplying high-quality and competitively priced taphole clay to steel mills. It is your best choice as a taphole clay supplier.
The ratio design, production process, and storage before use of the tap hole clay all affect the quality of the tap hole clay. To ensure the quality of the tap hole clay, the ratio scheme should be accurately measured and the composition of the tap hole clay should be determined.
The purity and type of raw materials, binders, admixtures and production processes are the main factors affecting the quality of the tap hole clay. The basic raw materials directly determine the performance of the tap hole clay. The chemical composition of the tap hole clay raw materials is developing towards high purity and carbon.
Basic raw materials of tap hole clay:
Clay: It mainly acts as a binder and lubricant. There are many types of clay, and the content of Al2O3 and SiO2 is unstable, which can easily lead to poor adhesion and unstable sintering. The initial strength of water-based tap hole clay is difficult to guarantee. The selection and addition of clay are very important, which mainly affects the plasticity of tap hole clay.
Corundum: Corundum is used as aggregate and fine powder in tap hole clay. It is mainly white corundum or brown corundum, with stable chemical properties, excellent slag resistance and erosion resistance. The volume density is 3.95-4.0g/cm3, and the melting point is 2050℃.
Coke: Coke keeps the iron mouth in a reducing atmosphere and protects carbon materials such as SiC. It has a high porosity, which is convenient for the volatilization of moisture and volatile components. It is an amorphous carbon that improves the air permeability of tap hole clay. It has a very high melting point and excellent slag resistance, thermal shock resistance, thermal conductivity and electrical conductivity.
Silicon carbide SiC: Increase the resistance of taphole mud to slag erosion and scouring. The density of silicon carbide is 3.17-3.37g/cm3. Industrial SiC is yellow, green, blue and black due to different impurity types and contents. The SiC we use is black and green, both of which are hexagonal crystals. It has the advantages of high thermal conductivity, good wear resistance, high high temperature strength, small thermal expansion coefficient, good thermal shock stability, etc. It is one of the indispensable refractory raw materials in the production of taphole mud.
Additives for tap hole clay:
Additives are an important component of tap hole clay . Their purpose is to make up for the shortcomings of the main components in terms of performance. Although the amount added is small, it has a great impact on its workability and usability. They mainly include: plasticizers and lubricants, expanders, sintering aids, antioxidants and resin powder to improve the strength of tap hole clay , etc.
As a taphole clay manufacturer, we strictly control the quality of various raw materials to ensure that the taphole clay can work more stably in steel plants and increase production and save energy for users of the taphole clay. We can also customize taphole clay with different properties according to the actual conditions of the blast furnace using the taphole clay.
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