The sintering engineering technology is the major core technology of CIE who has absorbed in sintering field for half a century through continuous absorption, improvement and self-innovation. CIE has got hold of the latest and the most advanced sintering technologies and processes in China with over 300 patents and core technologies. It can make sintering EPC service available, that is, providing customers with leading technologies, advanced equipment, high automation level and low energy consumption. 

 

CIE, the only engineering company with engineering design achievements of sintering projects with different scale from 24㎡ to 660㎡, ranks the first in the world based on the total number of sintering machine projects designed and constructed by CIE. In the meantime, it’s in 2000 that CIE popped up as the first large EPC enterprise in China metallurgical industry taking design as a leader, and it has undertaken and completed two Ansteel 360㎡ sintering EPC projects with active influence and wide praise in metallurgical industry. 

 

Super large sintering machine technologies

 

◎Fuel gradation usage saves energy consumption

◎Adopting variable frequency speed control technology for the main exhaust fan of sintering machine to save energy consumption

◎Sinter sizing technology suitable for large sized sintering machine

◎Automatic sinter sampling and testing technology

◎Comprehensive utilization technology of sintering flue gas desulphurization and flue gas recirculation

◎Sintering machine feed end and discharge end sealing technologies

◎Integrated sintering expert control system

 

All-concentrate sintering technologies

 

◎Technology of adding quicklime in mixed materials to strengthen balling performance

◎Adoption of automatic water addition control system to stabilize the moisture content of mixed materials

◎Pellet sintering and divided fuel addition technology

◎Speed regulating drum nodulizing process technology

◎Wide swinging belt conveyor distribution technology for mixed materials

◎Hot air pre-heating and sintering technology

◎Technology of charging product sinter to BF by size grading

 

Sintering flue gas recirculation process technologies

 

◎ Technology of balancing pressure, flow, temperature and oxygen of flue gas

◎ Highly efficient blending technology of flue gases of different characteristics

◎ Selection technology of desulphurization system and non-desulphurization system

◎ Selection technology of sintering flue gas recirculation scheme (internal recirculation and external recirculation)

◎ Technology of adsorbent suction pressure on flue gas recirculation hood 

 

Efficient and environmentally friendly digestion and dust removal technology of calcium lime

 

◎ Double-stage digestion technology of calcium lime 

◎ Environment friendly material sealing technology

◎ Combined wet dust removal technology

◎ Anti-caking injection and cleaning technology

◎ Dedusting wastewater recycling and utilization technology

 

Auxiliary sintering gas injection process and equipment technology 

 

◎ Sintering charge level fuel gas cascade top-blown process technology based on accumulation heat model

◎ Retractable linkages gas blowpipe line equipment technology 

◎ Shutter like steady flow diaphragm equipment technology

◎ Forked wing-type escape-proof plate

◎ Production self-optimizing control and robust identification technology of abnormal operating condition

 

Technologies of key sintering equipments

 

(I)Technologies of sintering machine 

◎The minimum air leakage rate of sintering machine feed end and discharge end sealing technologies can be up to 16.5%.

◎The sintering machine drive technology improves its reliability of drive device and increases its production availability.

◎The nine-roller feeder is developed for sintering machine feeding to improve sinter product yield and quality.

(II)Technologies of ring cooling machine: 

◎With the liquid as the sealing medium for the first time, the air leakage rate is less than 5%, and its installed capacity and running cost are reduced by 20%.

(III) Technologies of drum mixer: 

◎The first and second mixer assembling technology boast its small land coverage and low investment.

(IV) Technologies of vibrating screen: 

◎Drum rapping device is developed for anti-sticking technology of drum wall

◎Elliptical equi-thickness vibrating screening technology boasts its high screening efficiency and stable operation. Double-passage grizzly bar screening technology improves its screening accuracy and reduces its energy consumption.

 

Self-adaptive frequency control system and technologies of main sintering exhaust fan

 

◎ Optimal energy saving operation technology of sintering machine

◎ Analysis methods of bed depth and sintering machine speed under the optimal energy saving operation of sintering machine

◎ Analysis methods of effective air volume and ineffective air volume in sintering process

◎ Analysis methods of main sintering exhaust fan suction pressure and sintering system resistance

◎ Analysis methods of air volume and sintering burnt through end-point of main sintering exhaust fan

◎ Self-adaptive frequency control of main sintering exhaust fan

 

Technologies on efficient utilization of waste heat and comprehensive treatment of flue gas 

 

◎ Waste gas and flue gas superposition and air pickup system and directly connected furnace hood type waste heat boiler generation technology

◎ Active carbon flue gas desulphurization and denitration technology

◎ Efficient dust removal technology

 

Integrated sintering control expert system

 

Zhanjiang steel base sintering engineering of Baosteel

Taisteel 660㎡ sintering machine engineering

600㎡ energy conservation and environmental protection and comprehensive reform engineering on sintering system of Baosteel No.4 sintering plant 

Flue gas purification facilities engineering of No.3 sintering plant of Baosteel (EP)

Meisteel 450㎡ sintering machine EPC engineering of Baosteel Group

Hansteel 2x 360㎡ sintering machine EPC engineering

Pansteel Xichang 2x 360㎡ sintering machine EPC engineering

Shaosteel 360㎡ sintering machine EPC engineering

Ansteel Dong'anshan sintering EPC engineering

435㎡ sintering engineering of Wusteel No.4 sintering plant

Xinsteel sintering EPC engineering

Ansteel west district 2x328㎡ sintering machine EPC engineering

Baosteel sintering engineering

Phase one Pansteel sintering engineering

Baosteel sintering flue gas recirculation

Shaosteel auxiliary sintering gas injection