Grate Rotary Kiln for Direct Reduced Iron(world QC standard)

Grate Rotary Kiln   1,Advantages of pellet The pellet has the following advantages: The high grade iron of the pellet is good to improve the quality before it is put into the blast furnace, reduce the amount of slag; uniform size, high strength, it can improve the gas distribution of the blast furnace top, FeO content is low to reduce the coke rate.
The high-basicity sinter and some amount of acid pellet can form a reasonable charge structure, it can further enhance the excellent high-basicity sinter and acid metallurgical properties of high grade iron ore pellets, to restore good performance advantage, it will enable the blast furnace to improve the utilization factor and to reduce the coke rate.
The low-grade iron ore need to be fined to the size of 0.074mm and 90% to monomer dissociation, the fine iron obtained by the mineral processing is suitable to be raw pellet for production off oxide pellet, the use of pellets of Iron Plant in the United States is 60 to 100%. European blast furnaces also pay more attention to the superior metallurgical pellet performance and the amount of pellets, the use ratio is generally 20% to 70%.
It could be the raw material of DRI, thus avoiding the blast furnace production process of using coking coal as raw material. 2,The process flow diagram   3,Main quality indices and technical specifications •   TFe cont.:     64~65%(when raw material meets the demand) •   FeO cont.:    <1.5% •   granularity  8~16mm •   Compressive strength ≥2200N / per ball •   Tumbler index      +6.3mm,>90% •   Anti-wear index    -0.5mm,<5.0% •   Screening index   -5mm,<3.0% Expansion index   <15% The above material conditions are assumptions and designed conventional, the specific circumstances of the conditions is that it will modify the specifications and process parameters of the product based on the lab report after the materials are to be determined.