Pulverized Coal Injection Project, medium-speed Vertical Mill, Ball Mill
Description
Pulverized Coal Injection Project, coal mill
Blast furnace PCI /rotary kiln PCI/vertical kiln PCI have been the main method for lime stone roasting, pellet roasting, coking, iron increasing, reduced cost, improve high efficiency smelting ,and promote blast furnace running smoothly, also is the main method for technical progress of blast furnace iron making. Our company can take total project from the design, equipment type selection, construction install and automatic system of blast furnace coal injection/ rotary kiln/vertical kiln coal injection to going to production.
Description of Blast Furnace Pulverized Coal Injection Process
Drying and grinding the raw coal (blind coal, soft coal), delivery by compressed air or nitrogen, through the coal injection pistol inject into the furnace hearth from the blast furnace tuyere, blast furnace coal injection system is consisted of material loading system, powder marketing system, injecting system automatic system, and so on.
Rotary Kiln/ Vertical Kiln Pulverized Coal Injection Process
The process is that the raw coal (soft coal) will be drying, grinding, and collecting powder, through the dosing scale to the burner with pressure air (nitrogen).
Equipment Configuration
1, Storage and transportation of coal: coal shed, coal unloading , coal receiving hoper.(Convey the coal by belt conveyor machine).
2, Loading material system be equipped with coal silo, under the storehouse feeding material by vibration machine to the feeding machine, through weighting belt to the ball milling machine.(mid speed grinding machine)
3, Pulverizing making system is equipped with middle milling machine, high concentration bag dusty collector, cola powder storage, original coal drying usually using exhaust gas of hot air blast furnace or the mixed drying air of hot air blast furnace exhaust gas and building fume furnace, then enter into middle grinding machine to grinding the coal, finally through high concentration dusty collector bag collecting coal powder into storehouse.
4,Blowing system usually using double pots blowing, there will be two blowing pots on the one set blast furnace, the coal powder will be convey to each tuyere of the blast furnace with unlubricated air compressor through Compressed Air or Nitrogen.
5, other device: weighing belt, pulverized coal silo, blowing pot weighing, point temperature, pressure testing, and automatic controlling system.
Pneumatic transmission
A. Material sealing pump dilute phase conveying Conveying capacity : < 10t/h
Conveying material: Powder material like lime, coal powder, cement
Conveying medium: Compressed air, nitrogen Conveying pressure: 20Kpa~60Kpa
B. AV pump dense phase pneumatic transmission conveying capacity: 10t/h
Conveying material: Pellet return mine, lime, coal powder, fly ash etc.
Conveying medium: Compressed air, nitrogen Conveying pressure: 0.4-0.7 Mpa.
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