Industrial Silicon Submerged Arc Melting Furnace Introduction
Industrial silicon submerged arc furnace is an important equipment in silicon ore processing, playing a key role in the silicon industry.
The main body of the furnace is rectangular structure, which is built with special refractory materials.
The combustion system with certain high temperature resistance is a closed cycle flame combustion system, which uses appropriate fuel for combustion to ensure stable temperature in the furnace.
The heating system of the furnace adopts resistance heating or electric arc heating to ensure uniform heating of silicon ore under high temperature environment.
Industrial Silicon Submerged Arc Melting Furnace Introduction
Industrial silicon submerged arc furnace is an important equipment in silicon ore processing, playing a key role in the silicon industry.
Silicon submerged arc furnace adopts semi-closed type, adopts copper bush pressure ring electrode holder, electric furnace bottom ventilation cooling, furnace body adopts rotary furnace body, furnace body temperature measurement, transformer has 20% long-term overload capacity.
The main body of the silicon melting furnace is rectangular structure, which is built with special refractory materials. The combustion system with certain high temperature resistance is a closed cycle flame combustion system, which uses appropriate fuel for combustion to ensure stable temperature in the furnace. The silicon arc furnace heating system of the furnace adopts resistance heating or electric arc heating to ensure uniform heating of silicon ore under high temperature environment.
Silicon melting furnace short-network system (bus bar system), copper bush and incoming cable have long-term overload capacity of more than 20%.
The silicon arc furnace control system can realize real-time monitoring and adjustment of temperature, pressure and other parameters in the furnace.
Main Application of Industrial Silicon Submerged Arc Melting Furnace
Industrial silicon is mainly used as an additive for non-ferrous alloys. Industrial silicon is also used as the alloying agent for silicon steel with strict requirements, and the deoxidizing agent for smelting special steel and non-ferrous alloy.
Industrial silicon can be drawn into monocrystalline silicon for electronic industry after a series of industrial processing.
Industrial silicon is widely used in alloy preparation, high-purity semiconductor material production, solar cell production, temperature-resistant material production and organic silicon, etc.
Characteristics of Industrial Silicon Submerged Arc Melting Furnace Equipment
The semi-closed industrial silicon submerged arc furnace has the following technical features in process design and equipment selection:
1. High-efficiency and energy conservation: the closed cycle flame combustion system is adopted, and the heat in the furnace is fully utilized to reduce energy waste
2. Stable and reliable: the control system realizes accurate monitoring of temperature, pressure and other parameters to ensure stable and reliable production process.
3. Environmental protection and low emission: the combustion system is reasonably designed and the waste gas treatment system is perfect to realize the clean emission of waste gas and meet the environmental protection requirements.
4. Convenient operation and maintenance: the equipment structure is simple and the maintenance is convenient, and the operator can easily master the operation of the equipment.
5. The silicon melting furnace transformer adopts the constant power electric furnace transformer with low impedance voltage, with high power factor and strong overload capacity
6. Short-network (bus bar system）adopts water-passing copper tube, electrode triangle full-compensation external short network（bus bar system), and short-network flexible cable adopts water-cooled cable, with small impedance loss.
Industrial Silicon Melting Furnace Equipment Composition
Industrial silicon melting furnace is mainly composed of furnace body, furnace shell, semi-closed furnace cover, furnace lining, short network system, water cooling system, smoke exhaust system, dust removal system, electrode shell, electrode holder, electrode pressure release and lifting system, loading and unloading system, holder, burnthrough device, hydraulic system, cooling water system, short network system, submerged arc furnace transformer and high voltage control and protection system, low voltage control and protection system, discharging system, computer operation system, water cooling cable, etc. Other accessories, dust removal, cooling tower system, etc. can be supplied as required.
Sanrui Industrial Silicon Melting Furnace Technical Advantages
Simple and intuitive operation, and very friendly human-computer interaction effect;
Large speed regulation range of electrode lifting, which can quickly lift the electrode;
The furnace cover is of frame-type water cooling structure, and the center area is made of non-magnetic materials.
Fast arc stabilization, accurate current regulation and small grid impact;
PLC photoelectric isolation control is adopted, so the anti-electromagnetic interference ability is strong. Combined with the modular design of the system, the operation is stable and reliable, and the fault rate is extremely low;
PLC programming can be used for more complex calculations, such as three-phase power, current, voltage balance control, and program modification is very convenient;
Simple and clear operation and convenient maintenance;
Low investment, quick effect and low energy consumption.
Extremely strong process and advanced software programming.
Main Technical Parameters of 255KVA Industrial Silicon Melting Furnace
| SN | Item | Parameter |
| 1 | Industrial Silicon Submerged arc furnace capacity | 25500kVA (3 × 8500kVA) |
| 2 | Electrode type | graphite electrode |
| 3 | Electrode diameter | Φ 780mm |
| 4 | Diameter of electrode distribution circle | Φ 2550mm (adjustable) |
| 5 | Electrode working stroke | 1500mm |
| 6 | Electrode lifting speed | 0.64m/min |
| 7 | Electrode circle area power density | 2100kW/m2 |
| 8 | Shape of furnace body | cylindrical |
| 9 | Furnace shell diameter | Φ 8200mm |
| 10 | Furnace shell height | 4800mm |
| 11 | Furnace diameter | Φ 6200mm |
| 12 | Furnace depth | 2800mm |
| 13 | Discharging port | 2 |
| 14 | Silicon arc furnace Transformer capacity | 25500kVA (single-phase 3 × 8500kVA) |
| 15 | Primary voltage | 35kV |
| 16 | Secondary voltage | 140V ～ 164V ～ 188V |
| 17 | Level 17 on-load electric voltage regulation, stage difference of 3V, 140V~164V for constant current output, output current of 89773A, 164V~188V for constant power output, output power of 25500kVA; |
Scope of Industrial Silicon Melting Furnace Supply
Silicon submerged arc furnace body: rotating mechanism of furnace body, furnace bottom, furnace shell, iron outlet, etc;
Iron outlet smoke exhaust system: hood, flue gas duct, flue duct hanging, etc;
Submerged arc furnace electrode holder: the upper part of the electrode combined holder mainly includes: electrode lifting device, electrode holding and pressing device, upper holder barrel and guiding system, hydraulic press pipeline, etc. The lower part of the combined electrode holder mainly includes: lower holding cylinder, anti-magnetic stainless steel water cooling protection screen, conductive copper tube in the furnace, copper bush, pressure ring and insulation system, etc.
Electrode hydraulic lifting system: electrode lifting device adopts hydraulic cylinder structure;
Secondary bus system (short network system): the secondary bus system includes: water-cooled compensator, water-cooled copper tube short network, water-cooled cable, insulation hanging device, low-voltage current transformer, etc.
Smoke hood and exhaust system: composed of smoke hood, flue duct and water-cooled butterfly valve.
Water cooling system: composed of short network, water cooling cable, conductive tube, copper bush, cooling water distributor, pressure, temperature and flow monitoring instrument, valve, water cooling pipe sump, etc.
Furnace top feeding system: the furnace top feeding system consists of a vibration feeder, a furnace material conveyor belt conveyor, a reversible belt conveyor, a mobile belt conveyor, a bunker and a partition, a material pipe and insulation, a material pipe gate, a material head, a material level meter, etc.
Hydraulic system: the hydraulic system consists of hydraulic pump station, electrode pressure plate (valve station), accumulator, etc.
Industrial Silicon Submerged Arc Melting Furnace Steelmaking Process
01
In the semi-closed industrial silicon submerged arc furnace, the silicon ore enters the furnace body through the feed port and is heated at high temperature.
02
Over time, the silicon ore gradually melts and dissolves, forming metal silicon liquid at the bottom of the furnace.
03
The silicon liquid flows out from the collecting port at the furnace bottom and is cooled and solidified to obtain finished silicon ingot. At the same time, under the action of the combustion system, the waste gas generated in the furnace is discharged after treatment to realize the recycling of heat energy.
Sanrui Industrial Silicon Melting Furnace Technology Optimization
Silicon submerged arc furnace adopts semi-closed type, adopts copper pad pressure ring electrode holder, electric furnace bottom ventilation cooling, furnace body adopts rotary furnace body, furnace body temperature measurement, transformer has 20% long-term overload capacity. Short-network system, copper bush and incoming cable have long-term overload capacity of more than 20%.
Reliable insulation is set between the flue and the furnace cover.
The silicon arc furnace hydraulic system adopts a combination valve and an energy accumulator is set.
The upper and lower ends of the electrode lifting cylinder are protected by insulation. In order to prevent electrode deflection, insulation shall be provided at both ends of the high pressure oil pipe on the furnace cover, platform, electrode guiding device and electrode guiding device.
All silicon melting furnace pipes are provided with pipe trenches for ease of maintenance. The gate valve adopts stainless steel screw rod to increase its service life. Each group of water diverter is provided with 3 spare water circuits. The valve of water diverter adopts stainless steel or copper ball valve. The layout of water supply and return circuit of water diverter is reasonable.
The silicon iron furnace cover is of frame-type water cooling structure, and the center area is made of non-magnetic materials.
The electric silicon meting furnace flue is provided with water cooling section between the second and third floors to reduce the flue gas temperature.
Services Provided by Sanrui
1. Sanrui as one of the famous silicon furnace manufacturers & suppliers in China, Sanrui can provide basic Industrial Silicon Submerged Arc Melting Furnace layout and layout drawings
2. Sanrui will send engineers to your factory to install and debug the machine, and provide reliable after-sales service.
3. Sanrui provides training for operators and maintenance personnel, and the smelting equipment is easy to operate and maintain
4. Competitive price and excellent quality
5. Low investment, high production efficiency, high rate of return
6. Stable performance of smelting equipment, safe production
7. Silicon arc furnace can be customized according to different needs
8. Silicon melting furnace capacity can be adjusted according to customer requirements
9. Environmentally friendly, low energy consumption
Sanrui as one of famous silicon iron furnace suppliers, can provides engineering consulting, R&D, design, equipment supply, system integration and software development, construction, installation, commissioning, project management, technical services and training, production guidance, operation and maintenance, spare parts supply and other comprehensive engineering and technical services.
Send us your detailed project requirements, and our engineering team will design Industrial Silicon Submerged Arc Furnace solution based on your needs.
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Sanrui is well experience in design, manufacturing, installation, commissioning of steelmaking furnace process equipment. Send us your project details inquiry and our team of engineers will design a metallurgical furnace equipment system solution from A to Z based on your needs.
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