Ferrochrome Submerged Arc Furnace

详情

Specifications 

1.Submerged Arc Furnace 
2.Low power consumtion 
3.Resonable price 
4.Energy-saving 
5.CCC.CE,ISO 

1. Product usage 
The Submerged Arc Furnace is mainly used for Producing ferroalloy (including ferrotungsten, high carbonferromanganese, high carbon silicon iron, high-carbon Cr, Nickel Iron Alloy) and Silicon, calcium carbide,corundum, Yellow Phosphorous, etc. 

2. Main Features: 
It can be divided into three kinds according to mode of power supply: 
1) AC Submerged Arc Furnace 
2) DC Submerged Arc Furnace 
3) Low-frequency Submerged Arc Furnace 

3. Main Compositions: 
Mechanism System: 
Furnace Shell 
Furnace Cover 
Fume exhaust system 
Electrode System: electrode holder, electrode lifting device and electrode clamping/ releasing device 
Charging System 
Hydraulic System 
High Current System 
Water-cycling system 
Tapping System 
Electric system: 
Transformer 
High-voltage control protection system 
Low-voltage control protection system 
Computer operating system 
Heavy gauge water-cooled cable 

Submerged arc furnace equipment is divided into three layer arrangement : 

The 1st layer is furnace body (including furnace bottom support, furnace shell, furnace lining), tapping system (including the ladle and ladle car. ), arc burner etc. 

The 2nd layer 
1, Fume hood: At present, mostly of submerged arc furnace adopts closed or semi-closed low hood structure, with the characteristics of environmental protection, facilitate maintenance and improve the operation environment. The closed structure can also collect the exhaust gas (main ingredient is carbon monoxide) which is generated in the production and used in synthetically. Also can reduce the heat loss of the circuit, decrease the temperature of the electrode, and improve the operating environment. 
2, Electrode holder: Most of submerged arc furnace with three-phase power supply. Electrode in triangle or inverted triangle, symmetrical position placed in the middle of furnace chamber. Large submerged arc furnace generally adopts anthracite, coke and coal tar pitch mixed as electrode material, in the process of smelting, it roasting by itself as electrode. 
3, Short net 
4, Copper tile 
5, Electrode shell 
6, Unloading system 
7, Stoking machine 
8, Fume exhaust system 
9, Water-cooling system 
*0, Submerged arc furnace transformer 
*1, Operating system 

The 3rd layer 
1, Hydraulic system 
2, Electrode press and release device 
3, Electrode lifting system 
4, Steel platform 
5, Hopper and cycle material distribution car 
Other additional: Skew Bridge feeding system, electronic batching system, etc. 

Ferrochrome submerged arc furnace 
Ferrochrome is produced using electric submerged Arc furnaces. The closed furnaces are fed raw materials from various sources including chrome ore, coke, char, coal, quartzite and dolomite via the proportioning system for the production of ferrochrome. The valuable portion of the chromite is converted into a metallic phase. The impurities and higher melting oxides remain in a slag phase. 
The furnaces are tapped intermittently. The ferrochrome and slag are separated by means of a skimmer plate. The ferrochrome is tapped into sand moulds where it is left for a few hours to cool down and then removed to the breaking floor. The finished product is crushed and screened to exact customer requirements. 
After the slag is cooled down, it is removed to a slag dump from where it is fed into the alloy recovery plant.