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Syed Rashid Ahmed ButtShaanxi Chengda Industrial Furnace Co., Ltd. completed the commissioning of electric arc furnace, the workers carefully cooperated with Chengda engineers to learn and operate the equipment, showing the deep friendship and excellent cooperation between the people of China and Pakistan. -
AboubacarAfter more than 1 month of intense production and debugging, 2 sets of heat exchange flue gas settling chamber equipment has been successfully put into operation ~ All the personnel involved in the project have worked hard! ~ -
Ji-hwan【 Warm congratulations 】 Shaanxi Chengda Industrial Furnace Manufacturing Company in South Korea, North Chungcheong County precious metal smelting furnace equipment installation and careful manufacturing and strict commissioning, looking forward to the future in more fields to achieve mutually beneficial win-win cooperation!
Contact Person :
Du
Phone Number :
13991381852
Calcium Carbide Electric Arc Furnace For Ferrosilicon Silicomanganese Ferrochromium
| Place of Origin | China |
|---|---|
| Brand Name | Shaanxi Chengda |
| Certification | ISO 9001 |
| Model Number | Negotiate based on equipment processing capacity |
| Minimum Order Quantity | 1 unit |
| Price | The price will be negotiated based on the technical requirements and supply scope of Party A |
| Packaging Details | Discuss according to the specific requirements of Party A |
| Delivery Time | 2 months |
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | Complete production supply chain, supply on time, and meet quality standards |
Product Details
| Equipmenttype | Smelting Furnace | Capacity | Customizable |
|---|---|---|---|
| Energyconsumption | Variable, Typically 300-600 KWh/ton | Key Selling Points | Competitive Price |
| Powersource | Electric Arc / Induction | Frequency | 50±0.5Hz |
| Power | 3-25KW | Temperature Range | 1000-1800℃ |
| Furnacecapacity | 1-50 Tons Per Batch | Constructionmaterial | High-grade Refractory Bricks And Steel |
| Electric Donkey Type | Corundum Furnace | ||
| Highlight | Calcium Carbide Electric Arc Furnace,Ferrosilicon Smelting Equipment,Silicomanganese Ferrochromium Furnace |
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Product Description
Calcium Carbide & Ferroalloy Submerged Electric Arc Furnace
Full Introduction
Calcium Carbide Electric Arc Furnace: The industry standard name is Submerged Arc Furnace (SAF), commonly known as carbide electric arc furnace. This furnace can accommodate four major smelting products: carbide, ferrosilicon, silicomanganese, and ferrochromium. It is a core electrothermal reduction equipment for both metallurgy and chemical industry.
二,Overall introduction of the equipment
1. Working Principle
Electrothermal carbothermic reduction technology: three self-baking electrodes insert into furnace burden to form submerged electric arc. Heat comes from two sources:
- High-temperature electric arc (1600–2500℃) between electrode tip and raw material
- Resistance heat generated when large current passes through solid furnace charge
Coke/anthracite acts as reducing agent, reducing metal oxides in ore into molten alloy or calcium carbide. Continuous feeding + intermittent tapping for 24h non-stop production.
2. Core Equipment Composition
- Furnace Main Body
Furnace shell (water-cooled steel structure), carbon/magnesia refractory lining, furnace cover, tapping channel, slag outlet, furnace platform. Classified as open, semi-closed, fully closed furnace (fully closed for flue gas recovery & environmental protection).
- Power Supply System
High-voltage transformer, short net conductive system, reactive power compensation & harmonic filtering cabinet, PLC electrical control room. Supports low/high/ultra-high power models (3300kVA ~ 81000kVA).
- Electrode Lifting & Hydraulic System
Hydraulic cylinder, electrode holding clamps, pressure ring, electrode paste feeding device; automatic lifting adjustment to stabilize arc resistance.
- Raw Material Batching & Feeding System
Raw material silos, automatic weighing batcher, belt conveyor, sealed top charging chute, dust-proof feeding mechanism.
- Auxiliary Circulation & Environmental System
Full water cooling circulation unit, flue gas waste heat recovery, bag dust removal system, CO gas collection pipeline, desulfurization & denitrification unit.
- Intelligent Monitoring System
Real-time temperature, current, voltage, furnace pressure & flue gas online monitoring, automatic alarm & load adjustment.
3. Equipment Advantages
- Multi-product Compatibility:One furnace switches between calcium carbide, ferrosilicon, silicomanganese, ferrochromium by adjusting raw material formula, flexible production line layout.
- High Thermal Efficiency:Electrodes buried in burden reduce heat radiation loss, power consumption 8–15% lower than open arc furnaces.
- Low Operation Cost:Self-baking electrodes save graphite consumption; fully closed furnace recycles CO flue gas for power generation or heating.
- Stable Alloy Quality:Precise electric power control ensures stable chemical composition, high metal recovery rate ≥92%.
- Automatic & Low Labor Intensity:Automatic batching, electrode lifting, tapping auxiliary machinery, central PLC control.
- Green Environmental Compliance:Full sealed dust removal + waste heat recovery, meets national industrial emission standards.
4. Technical Parameter Reference Table
| Smelting Product | Main Raw Materials | Furnace Temp | Power Consumption (kWh/t) |
|---|---|---|---|
| Calcium Carbide | Quicklime + Coke | 1900–2200℃ | 2900–3300 |
| Ferrosilicon (FeSi75) | Quartz + Coke + Scrap Iron | 1700–1900℃ | 4800–5600 |
| Silicomanganese | Manganese Ore + Quartz + Coke + Lime | 1350–1600℃ | 3600–4200 |
| High Carbon Ferrochromium | Chromite Ore + Coke + Lime | 1650–1800℃ | 3800–4500 |
三,Detailed introduction of four major smelting products
1. Calcium Carbide (CaC₂)
Production Formula
CaO + 3C = CaC₂ + CO ↑ (2000℃ electrothermal reaction)
Grade & Application
- Standard grade: 295L/kg, 300L/kg, 315L/kg gas yield
- Main uses:
- Acetylene gas generation for metal cutting/welding, PVC plastic raw material
- Steel desulfurizer & deoxidizer in metallurgy
- Raw material for pesticide, calcium cyanamide chemical synthesis
2. Ferrosilicon (FeSi45 / FeSi75 mainstream grades)
Raw Materials: High-purity quartz sand, metallurgical coke, steel scrap, lime
Core Composition (FeSi75): Si 72–80%, Fe balance, low Al/C/P impurities
Industry Applications
- Primary deoxidizer in carbon steel, stainless steel smelting; remove oxygen from molten steel to improve mechanical performance
- Alloy additive: enhance tensile strength, wear resistance of steel
- Casting industry inoculant: refine graphite grain, reduce casting defects
- Production of silicon manganese, silicon calcium composite alloys
3. Silicomanganese Alloy (FeMn68Si18 mainstream)
Raw Materials: Manganese ore, silica, coke, flux lime
Typical Composition: Mn 65–70%, Si 16–22%, C ≤2.0%
Advantages & Usage
Dual deoxidizer & alloying agent, lower cost than pure ferromanganese + ferrosilicon combined use:
- Main additive for low-alloy steel, ship plate, construction steel, pipeline steel
- Reduce oxygen & sulfur content simultaneously, improve steel toughness & weldability
- Raw material for low-carbon ferromanganese refining
4. Ferrochromium (High Carbon / Medium Carbon / Low Carbon Ferrochrome)
Raw Materials: Chromite ore, coke, lime, silica
Main Grades & Uses
- High-carbon ferrochrome (C 4–8%): Raw material for stainless steel, wear-resistant cast iron
- Medium/low-carbon ferrochrome: Produce corrosion-resistant stainless steel, alloy tool steel
- Core function: Add chromium element to form passive anti-rust film, improve hardness & oxidation resistance of steel
四,Complete Production Process Flow
Raw Material Crushing & Drying → Automatic Batching Mixing → Top Sealed Charging into SAF → Submerged Arc High-Temperature Reduction → Molten Alloy/Carbide Tapping → Ladle Deslagging → Casting & Cooling → Crushing & Screening → Finished Product Storage & Shipment
五,Application Fields of the Furnace
- Ferroalloy Metallurgy Plant: Mass production of ferrosilicon, silicomanganese, ferrochrome for steel mills
- Calcium Carbide Chemical Plant: Acetylene chemical raw material production
- Integrated Metallurgical-Chemical Enterprise: Multi-product flexible switching to balance market price fluctuation of alloys & calcium carbide
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