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Energy Conservation

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Electric Field Precipitator with Rotary Pole Plate

Adopt the technology of rotary pole plates to modify the existing electrostatic precipitator, making the dust content at the exhaust gas outlet lower than 50mg/m3

 

 

 

Pulverized Coal Injection

To substitute for carbon of coke for heat supplying; to enrich the reducing gas in furnace and improve indirect reduction; the hearth cooling creates uniform temperature along the hearth radius direction, which enable the blast furnace to receive blast temperature; stable operation, temperature uniformity in hearth, to improve quality of pig iron.

 

 


Ground Granulated Blast-Furnace Slag

The ground granulated blast-furnace slag is an ultrafine powder produced by grinding blast furnace granulated slag. GGBS is a new green construction material used as high-quality mineral admixture for cement and concrete.

 


Slag Processing

The treatment process of slag stewing brings a new way for the comprehensive utilization of converter slag, which makes the subsequent scrap recycling and its classification more energy-saving and convenient.

 

 


Oxygen-Enriched Before the Machine

Currently most blast furnaces adopt oxygen enrichment after furnaces, which first boosts the pressure of finished oxygen (20KPa) generated from air separation tower to 2.5MPa, then reduces its pressure to 0.6MPa through pressure reducing valve unit, and finally delivers the oxygen to air ducts after blower of blast furnace for oxygen-enriched air blast. Such way of oxygen enrichment wastes enormous energy. 
In the method of oxygen enrichment before blast furnace, the finished oxygen generated from air separation tower is delivered through newly built low-pressure pipeline to air inlet ducts of fans of blast furnace, then naturally sucked into the fans and mixed with air into oxygen-enriched air for the use of blast furnace, so the oxygen compressor after oxygen generation is no longer required, which can reduce energy consumption and lower production costs.

 

 

 

Regenerative Technology

The previous conventional combustion adopts divided wall type mode to recover the waste heat, i.e. metal tubular heat exchanger. Generally the air could be pre-heated up to 400~600℃.
The regenerative combustion technology adopts change-over type direct heat exchange mode, which could pre-heat the air up to over 1000℃ to maximize the waste heat recovery.
One group regenerative burner consists of two burners, one for combustion and the other for fume exhausting, which are operating alternately.
After high-temperature fume is discharged from regenerative burner and the heat accumulator is heated close to the furnace temperature, the temperature of flue gas has decreased to about 150 ℃ (dew point) when coming out of heat accumulator; After the change-over by reversing valve, this burner switches the status from ’fume exhaust’ to ‘firing’, the combustion air at normal temperature will enter into the burner to absorb the heat of heat accumulator, and be heated up to over 1000℃ and sprayed into the furnace for mixed combustion with the gas.

 

 

 Desulfurization

   Desulfurizationsystem for all kinds of different gas, such as biogas, coal oven gas, coal-bed gas, producer gas

  We adopt wet desulfuration technology, which have superiority in stable manipulation, safe operation, high desulfuration    

  efficiency, and low consumption of raw material. The desulfuration efficiency can up to 99% above.

 

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Shanghai Prime Metallurgy Technology Co., Ltd.

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Address: Room 506, Building 5, No. 898, Xiuwen Road, Minhang District, Shanghai, China;
Post Code:201199
Phone: +86 21 24259995
Fax: +86 21 24259992

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