เทคโนโลยีวัสดุอุตสาหกรรม 1

Iron Production

Ore, lime, coke Waste gas Hot air Slag out Molten iron out

Export prices (c&f) US$/t Price of Iro 800 700 600 500 400 300 200 100

on and Steel HRC Low carbon wire rod

Ironmaking in the B Sinter Coke Bell Less To Hot Blast Stoves Stock House Combustion Air Blower Co

Blast Furnace Plant op Gas Cleaning Gasholder Scrubber Enrichment Gas Slag, Hot Metal ombustion Gas

Materials Iron Ore Flux Coke

Hematite Fe2O3 Limonite Fe2O3. xH2O Magnetite Fe3O4 Siderite FeCO3 Fe content : 20 - 70% SiO2 Al2O3 CaO MgO P, As S - unwanted, less than 0,15% Lime, dolomite CaMgCO3 , CaO Metallurgical coke

Preparing processes Coal COKE OVEN PLANT Gas Coke production - high-quality coal - without oxygen - 900 – 1150°C - 12 – 24 hn

Ore SINTER PLANT Sintering

Preparing processes Hot Blast Stoves Blower Combustion Air Combustion Ga Preparation of hot air - fire-clay lattices is heated up to 1200°C - cold air is introduced and heated up to 6

as 600-1100°C

Blast Furnace Throat Armour Refractory Lining Bustle Main Tuyeres Hearth Refractories

Top Gas Mains Top Bins Above Burden Probe Temperature Probe Sub Burden Probe

Main reactions in blast furnace



Bilance výroby Koks V 0,4t 0,35 - 0,6t Vysoká pec 3.5 t plynu

Vápenec Ruda (50%Fe) ~2t 1t surového železa

Products Pig Iron Fe C 90-95% 3,0- 4,3%

Chemical composition Si Mn P S 0,5-3,0% 0,5-3,0% 0,05-2% do 0,1%

Products Pig Iron is ingot

being casted to: TORPEDO LADLE