The method of BF smelting require good performance of air permeability, low stock column, so the furnace can run smoothly. The blast furnace will reduce nickel oxide to metal nickel, the nickel content of ferronickel depends on raw material and reducing capacity during the reduction process, nickel pig iron smelting blast furnace use coke as reducing agent, limestone as catalyst.  

HIGH EFFICIENCY AND LONGEVITY TECHNOLOGIES OF BLAST FURNACE

• Cooling wall longevity technology

• Blast furnace belly, furnace bosh, lower furnace shaft adopt copper cooling wall structure

• Full cooling brick wall is integrated thin-wall furnace lining structure.

• Choose high quality refractory material for different locations of blast furnaces

• Blast furnace design optimization and logical furnace type

• Appropriate furnace hearth height and tap-hole depth

• Furnace hearth and bottom inner lining structure

• Sub-sectional cooling in vertical direction according to thermal load at different parts of furnace

  
  

  
  

HOT AIR STOVE TECHNICAL FEATURES

• The vault of hot air stoves has stable structure andrational air flow distribution

• Choose appropriate refractory materials for differentwork zones of hot air stove

• Fully utilization of blast furnace coal gas, low calorificvalue gas can be used for hot air stoves and powergeneration.

• The coal gas adopts low temperature preheatingtechnology,safely andeffectively recycle thewaste heat of flue gas.

BLAST FURNACE GAS DEDUSTING TECHNOLOGY

• Gravity de-dusting for crude gas initial processing

• High-efficiency and low-consumption dustconveyor.

• Pulse type nitrogen backflow system

• Automatic control system

• Coal gas cut-off valve assembly can turn off coal gas at bothends of dust collector, then maintain, overhaul, change filterbag,etc.

• Raw coal gas and purified gas pipeline system

• Ash discharging and convey system