LOW CARBON FERROCHROME FURNACE
The main raw materials for smelting low-carbon ferrochromium using the electro silicothermic method include chromium ore, silicon chromium alloy, and lime. Some also come with fluorite and iron scales.
Chromium ore should be a dry, clean lump or concentrate with a lump size of less than 50mm; Containing Cr2O3>40%, Cr2O3/ Σ FeO>2.0, phosphorus content should not exceed 0.03%. Select silicon chromium alloys with different carbon contents based on the grade of the micro carbon engraved iron smelted. When smelting low-carbon iron with a carbon content of 0.06%, the carbon content of silicon chromium alloy should be less than 0.06%; When smelting low-carbon ferrochromium with a carbon content of 0.03%, the carbon content of the silicon chromium alloy should be less than 0.03%. Silicon chromium alloy shall not contain slag, and the block size shall not exceed 15mm. Fragments less than 1mm shall be sieved out. Lime requires a CaO content greater than 88% and a phosphorus content less than 0.02%. Newly burned lime with a block size of 10-50mm should be used.
FEATURES
CHNZBTECH TECHNOLOGY FOR A MATURE 4000KVA FURNACE
CHNZBTECH Technology for a Mature 4000KVA Furnace
Productivity：35t/day;
Cooling water consumption: 150m³ / h, cooling water can be recycled,
Secondary current: 10500A,
4000KVA LCFC furnace fume amount: 90000m³/h, bag filter recommended;
HP electrode 400mm, consumption of each ton of alloy electrode is 16-18 kg.
Ton products raw material chrome ore 1.35t, siliconchrome 0.56t, lime 1.20t
Power consumption：2200-2800KW.H/t, depends on melting process;
SPECIFICATIONS
LOW CARBON FERROCHROME FURNACE SPECIFICATIONS
Grades and ingredients of some products in China
C
Grade
Chemical %
Cr
C
Si
P
S
Range
Ⅰ
Ⅱ
Ⅰ
Ⅱ
Ⅰ
Ⅱ
Ⅰ
Ⅱ
≥
≤
micro
FeCr65 C0.03
63.0～75.0
0.03
1.0
0.03
0.025
FeCr55 C0.03
60.0
52.0
0.03
1.5
2.0
0.03
0.04
0.03
FeCr65 C0.06
63.0～75.0
0.06
1.0
0.03
0.025
FeCr55 C0.06
60.0
52.0
0.06
1.5
2.0
0.04
0.06
0.03
FeCr65 C0.1
63.0～75.0
0.10
1.0
0.03
0.025
FeCr55 C0.1
60.0
52.0
0.10
1.5
2.0
0.04
0.06
0.03
FeCr65 C0.15
63.0～75.0
0.15
1.0
0.03
0.025
FeCr55 C0.15
60.0
52.0
0.15
1.5
2.0
0.04
0.06
0.03
Low
FeCr65 C0.25
63.0～75.0
0.25
1.5
0.03
0.025
FeCr55 C0.25
60.0
52.0
0.25
2.0
3.0
0.04
0.06
0.03
0.05
FeCr65 C0.5
63.0～75.0
0.5
1.5
0.03
0.025
FeCr55 C0.5
60.0
52.0
0.5
2.0
3.0
0.04
0.06
0.03
0.05
