
Submerged Arc Furnace is an important metallurgical industrial equipment, mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent and solvent, and mainly produces ferroalloys such as ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, silicon-manganese alloy, etc.
Submerged arc furnaces has various specifications, and common specifications include 12500KVA, 16500KVA, 33000KVA, 40500KVA, 45000KVA, 54000KVA, 63000KVA, etc. At present, the largest SAF in operation in China is 81000KVA calcium carbide furnace and ferrosilicon furnace.

Industrial Silicon Furnace:
Classification Of Submerged Arc Furnace
The working characteristics of the SAF include the use of carbon as the furnace lining, the use of self-training electrodes, the continuous and stable load of the transformer, low impedance voltage, more voltage regulation levels, smaller step difference, and strong overload capacity.
Submerged arc furnaces can be divided into two types: loaded and unexcited voltage regulation.
In addition, submerged arc furnace are mainly divided into two types: semi-closed and closed furnaces.
The exhaust gas generated by the closed furnace contains more combustible components and can be used for gas internal combustion engine power generation.

Industrial Silicon Furnace Production Process Flow Chart

Configuration of The Submerged Arc Furnace
The main equipment adopts a semi-enclosed fixed furnace type with a low smoke hood.
The main mechanical equipment consists of the following parts:
Furnace body, Low smoke hood, Smoke exhaust system, Gripper system, Hydraulic butterfly spring brake, Water-cooled cable, Water-cooled copper pipe, Short network, Furnace discharge system equipment, etc.
The main electrical equipment includes:
35kv high-voltage switchgear, Electric furnace transformer, Electric furnace electrode control device, etc.
Auxiliary equipment includes:
Double-beam bridge crane, Suspended electric hoist, Furnace tamping, Charging, and pushing carts, etc.
Name | Fixed Carbon (%) | Volatile Matter (%) | Ash Content (%) | Fe2O3 In ash (%) | Granularity (mm) |
Charcoal | ≥76 | <1.6 | <2 | <3 | 3~100 |
Petroleum Coke | ≥90 | <7.0 | <0.26 | <15 | 0~30 |
Clean Washed Coal | ≥60 | <25 | <3 | <12 | 8~30 |
Wood Blocks | - | - | <3 | - | 10~100 |

Xi'an Sanrui's Advantages in The SAF Project
1. SR has been engaged in the research and development of submerged arc furnace and electric arc furnace short network technology for many years, and has developed in-phase and anti-parallel short network, modified planar layout short network, equilateral triangle, mid-phase non-jumping short network, due to its short network impedance. Low, low three-phase unbalance coefficient, high power factor, and significant power saving effect.
2. In-depth research on the induction heating of steel structures near high-current busbars has proved that the high power consumption of ferroalloys is because a considerable part of the electric energy is converted into heat of the steel structure. Based on this theory, a new design of the old furnace type was carried out to create A new type of submerged arc furnaces is released.
3. Use domestic advanced, mature and reliable process technology, electric furnace equipment and equipment to ensure that the electric furnace project can operate in a long-term, safe, stable and continuous manner and produce qualified industrial silicon products. Strive to achieve the best economic benefits.
4. Meet the requirements of modern enterprises for the production environment and achieve a combination of source management and tail processing. Implement the principle of controlling three wastes and reducing pollution.
5. Energy saving, consumption reduction and comprehensive utilization.
6. We have carefully absorbed the experience of foreign advanced submersible furnaces and transplanted many of the experiences suitable for our country into our new submersible furnaces, so that our company has considerable advantages in the design, manufacturing, installation and commissioning of submersible furnaces. .

Xi′an Sanrui Electric Furnace Co.,Ltd has decades of manufacturing experience in the furnace industry, has accumulated a lot of professional technology and production experience, and is located in Xi′an, the hometown of furnaces, Shaanxi Province.
As a professional steelmaking furnace manufacturer, SR Metal Tech focuses on the development, design and production of various specifications of steelmaking electric arc furnaces, submerged arc furnaces, ladle refining furnaces, ferroalloy refining furnaces, And induction furnaces.
And smelting furnace auxiliary equipment accessories:
Water-cooled furnace cover, water-cooled cables, alloy additives, electric arc furnace regulators, refining furnace regulators, and various trolley furnaces, well-type, box-type resistance furnaces, etc for heat treatment.

