What is a Submerged Arc Furnace for Ferro Alloy Production?

Ferro Alloy Submerged Arc Furnace,SAF

 

Ferroalloy submerged arc furnace, full name ore electric reduction furnace, is the main equipment for producing ferroalloy and calcium carbide in the chemical industry.


One end of the electrode of submerged arc furnace is buried in the material layer, forming an arc in the material layer and heating the material by using the resistance of the material layer itself; it is commonly used for smelting ferroalloy (see ferroalloy electric furnace), smelting matte nickel, matte copper (see nickel, copper), and producing calcium carbide (calcium carbide).


Classification of Ferroalloy Submerged Arc Furnace


Generally, according to the distribution of electrodes in the furnace and the shape of the furnace body, it can be divided into round furnace, rectangular furnace, and elliptical furnace;


According to the smelting type, Ferroalloy submerged arc furnace can be divided into ferrosilicon furnace, silicon manganese furnace, ferrochrome furnace, ferronickel furnace, silicon calcium alloy furnace, calcium carbide furnace, etc.;


According to the furnace body structure, it can be divided into fixed furnace and rotary furnace, etc.;


According to the smelting method, Ferroalloy Submerged Arc Furnace can be divided into open furnaces, semi-closed furnaces, fully closed furnaces, etc.


Composition of Ferroalloy Submerged Arc Furnace


Ferroalloy Submerged Arc Furnace is mainly composed of a power supply system, reactive power compensation device, charging system, electrode system, furnace busbar, furnace body, exhaust system, cooling system, hydraulic system, monitoring system, high and low voltage electrical control system, etc.;


Auxiliary smelting equipment includes batching system and feeding system, furnace front equipment, lifting equipment, finished product processing equipment, dust removal system, water supply system, gas supply system, electrode shell production and machine repair equipment, laboratory equipment, etc.;


The Ferroalloy Submerged Arc Furnaces smelting system engineering also includes factory design (including process and equipment design), power transmission and distribution system, raw material processing system, closed furnace gas purification system, flue gas waste heat utilization (power generation) system, etc.


During smelting, the mixed raw materials are added from the furnace's mouth, and three electrodes are buried in the charge. They are heated by the resistance heat generated by the arc and current passing through the charge, and the iron is discharged and slag is discharged regularly through the iron outlet. As the charge sinks, new materials are continuously added from the furnace's mouth, and the production is carried out continuously.


Depending on the type of smelting, the charge used is also different.


For example. The raw materials used in smelting ferrosilicon are mainly silica, coke, and steel scraps; smelting high carbon ferromanganese and other slag smelting, the raw materials used in addition to ore and reducing agent coke, also need to add flux CaO and so on.


The varieties of smelting include ferrosilicon, silicon calcium alloy, industrial silicon, high carbon ferromanganese, high carbon ferrochrome, silicon manganese alloy, etc.


Features of Ferroalloy Submerged Arc Furnace

1. Electrical control can realize automatic control operation;

2. The closed furnace cover adopts a plate water cooling structure;

3. The furnace busbar system adopts water-cooled copper tubes and large-section water-cooled cables, which can effectively reduce the impedance of the current system;

4. The continuous feeding of the furnace top silo is realized by using a rotating feeding belt conveyor or a rotating feeding machine;

5. The bottom ring, clamp, and protective screen of the combined gripper are all water-cooled;

6. The copper tile gripper has reliable conductive contact and supports long-term overload operation;

7. The batching adopts PLC automatic control and weighing by weighing sensor, and the batching is uniform and accurate.


（ The article is reproduced from Sanrui Electric Furnace: What is a Submerged Arc Furnace for Ferro Alloy Production? ）



E-mail: alice@srfurnace.com  / Tel: +86 15686041999 (Alice)

E-mail: anna@srfurnace.com  / Whatsapp: +86 159 2955 5868 (Anna)

Website: www.srfurnace.com / www.srmeltingfurnace.com / 

Xi'an Sanrui Electric Furnace

评论

发表评论

此博客中的热门博文

VD VOD Refining Furnace: The Working Principle

图片
  VD VOD refining furnace all operated in a vacuum environment to improve the quality of steel. VD furnaces use a five-stage steam jet pump to establish a vacuum environment so that the molten steel can be refined under negative pressure. The refining time is usually about 30 minutes.  VD refining is mainly to remove gases and impurities such as hydrogen, oxygen, and nitrogen in the molten steel to prevent air pollution and avoid steel defects. VD VOD Refining Furnace : The Working Principle The working principle of the VOD furnace is similar to that of the VD furnace, but the specific operation may be different. The VOD refining method is to place the primary molten steel in a closed tank and evacuate it, while blowing argon at the bottom of the ladle for stirring. VD Refining Furnace Vacuum Decarburization, referred to as VD, is a widely used vacuum refining furnace that can effectively reduce the hydrogen and nitrogen content in steel, remove oxygen in steel through carbon-...
阅读全文

Application of Medium Frequency Induction Furnace

图片
  The medium frequency induction furnace is a special smelting equipment suitable for smelting high-quality steel and alloys. It has the advantages of fast melting speed, high production efficiency, strong adaptability, flexible use, good electromagnetic stirring effect, convenient startup operation, and molten steel covered by slag (reducing atmospheric pollution to molten steel). It uses the principle of electromagnetic induction, with fast and uniform heating speed. Its widely used in metal smelting, heat treatment, forging heating and other fields. It is suitable for a variety of metals, including carbon steel, alloy steel, copper and aluminum. It has a wide range of applications, including heat treatment (such as quenching, annealing, tempering) and hot forming (such as forging, hot upsetting). Due to its energy saving, environmental protection and easy operation, the medium frequency induction furnaces has an important position in industrial production. Composition of Medium ...
阅读全文

Working Characteristics of Ladle Refining Furnace

图片
Ladle Refining Furnace ( LRF, LF ) is an important equipment in steel smelting. It is mainly used for secondary refining of molten steel after primary refining in converter or electric furnace to improve the purity of molten steel, adjust the composition and temperature. Its working characteristics are as follows: Features of Ladle Refining Furnace 1. Diversified functions Precise composition control: Through alloy fine-tuning, the composition of molten steel (such as C, Si, Mn, etc.) can be accurately adjusted to meet the requirements of different steel grades. Temperature uniformity: Through arc heating to compensate for temperature drop, ensure uniform temperature of molten steel (usually controlled within ±5℃) to meet continuous casting requirements. Desulfurization & deoxidation: Through the production of reducing slag (such as CaOAl₂O₃-based slag) and argon blowing and stirring, deep desulfurization (can be reduced to below 0.005%) and deoxidation. Inclusion removal: Throu...
阅读全文