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Silicomanganese Furnace

Silicomanganese alloy composed of manganese, silicon, iron, and a small amount of carbon and other elements is a widely used and high-yield ferroalloy. Manganese silicon alloy is a composite Oxygen scavenger commonly used in steelmaking, as well as a reducing agent for the production of medium and low carbon ferromanganese and the production of metallic manganese by silicothermic method. Manganese silicon alloy is divided into 8 grades according to the content of manganese, silicon and its impurity elements. Its chemical composition shall comply with the provisions of table.

The modern submerged arc furnace adopts the fully closed furnace type, and the main equipment is composed of furnace body, low smoke hood, smoke exhaust system, short net, electrode system, hydraulic system, tapping and slag system, furnace bottom cooling system, transformer, high-voltage power supply system, low-voltage electrical automatic control system, monitoring system, mixing system, feeding system, blanking system, distribution system, furnace mouth dust removal system, dry process gas recovery and dust removal system, etc.

TECHNOLOGY

CHNZBTECH Silicomanganese Furnace Technology

CHNZBTECH Silicomanganese Furnace Technology
  • Fully closed furnace type, gas recovery technology;

  • Continuous hot charging technology;

  • Double nozzle and double ladle tapping and slag technology;

  • Micro positive pressure operation technology;

  • Technology of leaving dead iron layer in furnace lining;

  • Slag water quenching;

  • Integrally forged copper tile holder electrode system;

  • Electrode pressure drop detection;

  • Energy saving short network technology;

  • Automatic control technology;

  • Furnace lining monitoring technology;

  • High voltage submerged arc furnace operation technology.

SPECIFICATIONS

Silicomanganese Furnace Specifications

Brand

chemical composition

Mn

Si

C

P

S

Not greater than

FeMn64Si27

60.0~67.0

25.0~28.0

0.5

0.10

0.15

0.25

0.04

FeMn67Si23

63.0~70.0

22.0~25.0

0.7

0.10

0.15

0.25

0.04

FeMn68Si22

65.0~72.0

20.0~23.0

1.2

0.10

0.15

0.25

0.04

FeMn64Si23

60.0~67.0

20.0~25.0

1.2

0.10

0.15

0.25

0.04

FeMn68Si18

65.0~72.0

17.0~20.0

1.8

0.10

0.15

0.25

0.04

FeMn64Si18

60.0~67.0

17.0~20.0

1.8

0.10

0.15

0.25

0.04

FeMn68Si16

65.0~72.0

14.0~17.0

2.5

0.10

0.15

0.25

0.04

FeMn64Si16

60.0~67.0

14.0~17.0

2.5

0.20

0.25

0.30

0.05


Typical Technical data for 5000KVA SiMn SAF

S/Q

Item

Unit

Data

Remark

1

Rated transformer

KVA

5000/20KV

3phase

2

Model


Semi-closed SAF


3

Hood height

mm

1750


4

Fume pipe dia.

mm

~1300

Two pieces

5

Electrode dia.

mm

φ750

Electrode paste

6

P.C.D

mm

Φ1920±100


7

Chamber diameter

mm

φ4900


8

Shell diameter

mm

φ6300


9

Chamber depth

mm

1650


10

Shell height

mm

3650


11

Electrode stroke

mm

1000


12

Electrode lifting

m/min

0.5


13

Tap hole

set

2


14

Copper contact

set

6

Each phase

15

Cooling water

m³/h

220


16

Daily output

ton

~20



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