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 submerged arc furnace for ferrochrome productionwith 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 |
|
|||||||||
|
FeCr55 C0.03 |
|||||||||||
|
FeCr65 C0.06 |
|
||||||||||
|
FeCr55 C0.06 |
|||||||||||
|
FeCr65 C0.1 |
|
||||||||||
|
FeCr55 C0.1 |
|||||||||||
|
FeCr65 C0.15 |
|
||||||||||
|
FeCr55 C0.15 |
|||||||||||
|
Low |
FeCr65 C0.25 |
|
|||||||||
|
FeCr55 C0.25 |
|||||||||||
|
FeCr65 C0.5 |
|
||||||||||
|
FeCr55 C0.5 |
|||||||||||
4000KVA Furnace for LCFC furnace
|
Item |
Unit |
Data |
Remark |
|
|
1 |
TR capacity |
KVA |
4000 |
3phase |
|
Power factor |
Cos |
≮0.9 |
||
|
2 |
End products |
LCFC |
Low, micro |
|
|
3 |
TPD |
t |
35 |
|
|
4 |
Tapping time |
d |
10 |
|
|
5 |
Max tapping |
t |
||
|
6 |
Electrode |
Graphite |
HP |
|
|
7 |
Electrode diameter |
mm |
400 |
|
|
8 |
Water |
M³/h |
150 |
Circulation water |
For more information about low carbon ferro chrome manufacturing processand low carbon ferrochrome production, please feel free to contact us!
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