9 mva submerged arc furnace
submerged arc furnace for ferrochrome production
low carbon ferrochrome production
low carbon ferro chrome manufacturing process

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

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


4000KVA Furnace for LCFC furnace

No.

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

3.5


6

Electrode


Graphite

HP

7

Electrode diameter

mm

400


8

Water

M³/h

150

Circulation water

CHNZBTECH INDUSTRIAL STEEL MAKING FURNACES
100
Countries
30000
Clients
500+
PROJECTS
2000+
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