Steel Thrust Roller Rotary Kiln DRI Sponge Iron Plant

Product Specification

Sponge iron production line

Brief Introduction of Direct Reduction Iron (DRI) Process

The reducing agent and heating source are anthracite, iron powder with 67% Fe is the raw material. The iron powder and binder are mixed in a certain proportion, and then conveyed to the forced mixer through a belt conveyor. After forced mixing, the mixed material enters the storage bin, enters into the rotary dryer through the quantitative feeder, the mixture will be dried and heated, and will be discharged When the temperature of the mixture reaches to 350℃ in the dryer, the dried material enters the disc granulator for pelletizing, the iron powder ball after the pelletization directly enters the chain-comb machine for heating and sintering. The balls are sealed into the rotary kiln for oxidation and calcination, the high-temperature metal balls will enter the vertical cooler for cooling. The cooled pellets and the reducing agent anthracite enter the next large-scale rotary kiln for reduction and calcination, and the full reduction reaction is carried out in the 80-meter rotary kiln. The reduced materials enter the rotary cooler for cooling, the cooled materials enter the cold Press machine to get pressed.

The rotary kiln discharges high-temperature exhaust gas and directly enters the sintering section of the chain-comb machine to heat and sinter the iron powder balls. The high-temperature exhaust gas is drawn from the lower duct of the chain-comb machine by a regenerative fan. The hot air discharged from the heating section of the comb machine (400℃) directly enters the dryer to dry the mixed raw materials. The exhaust air discharged from the dryer is less than 200℃. After the dust is removed by the dust collector, it is desulfurized by the main exhaust fan Tower, exhaust gas is discharged into the atmosphere through the chimney after desulfurization.

Product Details

other product:

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Company Information 

Henan Zhongke Engineering & Technology Co., Ltd. is specialized in large and medium-sized series of mining machinery, metallurgical machinery, building materials equipments, cement equipment and rotary kiln. R&D, production and marketing into a joint-stock enterprise, our company is headquartered in Zhengzhou Country’s High-tech Industrial Development Zone, which consists of three branches, a research and development department.

Since the establishment of our company, always adopt advanced modern management system, and focused on innovation, has brought together a number of scientific and technological elite, our company develop very fast we have over 500 employees, 29 senior engineers and more than 100 middling technicians. We have a good long-term cooperation with domestic scientific research units, have introduced advanced technology and testing system at home and abroad.

Our company pays more attention to basic managements, we constantly improve and perfect the quality management system to ensure to provide high-quality products, work site achieve fixation management, logistic achieve ABC management; our office achieve computer automatization; production technology adopt computer management; product development process design using CAD,CAPP, PROE technology. We have completed ISO9001-2000 quality certification.

Our company constantly insist on the development of new products and development investment funds for technological renovation to meet with different requirements from different countries. Our products are very popular in Africa, South America and Southeast Asia.