All Products
-
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
Low Microcarbon Ferrochrome Refining Equipment
| 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
| Highlight | low microcarbon ferrochrome refining machine,ferroalloy smelting equipment with warranty,ferrochrome refining equipment for smelting |
||
|---|---|---|---|
Product Description
Low Microcarbon Ferrochrome Refining Equipment
Detailed Introduction & Technical Parameters
Low-carbon ferrochrome (generally referring to C ≤ 0.10%, micro-carbon grade C ≤ 0.06%, ultra-micro-carbon grade C ≤ 0.03%) is mainly produced by the two-step refining process via electro-silicothermic method. The complete plant is a closed continuous/semi-continuous refining system, consisting of raw material pretreatment, silicon-chromium smelting, thermal mixing refining, flue gas treatment, automatic control and other systems.
1. Overall Process Flow
- Chromite ore, coke, flux → Submerged arc furnace smelting → Medium-carbon ferrochrome / Si-Cr alloy
- Si-Cr alloy + chromite concentrate + lime → Thermal mixing refining furnace → Desiliconization, decarburization and refining
- Tapping → Casting / Granulation → Finished low-carbon ferrochrome
- High-temperature flue gas → Waste heat recovery + dust removal purification → Emission up to standard
2. Core Equipment Introduction & Technical Parameters
2.1 Submerged Arc Furnace for Si-Cr Alloy
As the core upstream equipment for refining, it is used to produce high-silicon silicon-chromium alloy to provide reducing agent for subsequent decarburization.
Structure Composition
- Circular closed furnace shell, self-baking electrode / graphite electrode
- Short network system, hydraulic electrode pressing and lifting system
- Water-cooled hood, furnace cover, feeding system
- Tap hole, slag hole, furnace tilting mechanism
Typical Technical Parameters
| Item | Parameters |
|---|---|
| Rated capacity | 6300kVA / 12500kVA / 16500kVA / 25500kVA |
| Primary voltage | 35kV / 10kV |
| Electrode diameter | φ500 / φ600 / φ700 / φ800mm |
| Electrode lifting stroke | 1200~1800mm |
| Operating temperature | 1800~2000℃ |
| Daily output | 15~60 t/d (varies with capacity) |
| Unit power consumption | 3800~4600kWh/t Si-Cr |
| Lining material | Carbon brick + magnesia-carbon brick composite lining |
| Lining service life | 8~14 months |
| Flue gas temperature | 400~600℃ |
2.2 Refining Furnace for Low / Microcarbon FeCr
Mainly tilting refining furnace, divided into fixed type and rotary type, which is the key equipment determining the final carbon content.
Working Principle
Under alkaline slag environment, Si in silicon-chromium alloy is used to reduce Cr₂O₃, and realize deep decarburization, dephosphorization and desulfurization, finally obtaining micro-carbon ferrochrome with C ≤ 0.03%~0.06%.
Equipment Structure
- Tilting steel structure furnace body
- Magnesia-chrome / magnesia-calcium refractory lining
- Top charging port, temperature measuring and sampling port
- Tap hole, slag hole
- Hydraulic furnace tilting system
- Dust sealing hood
Detailed Technical Parameters
| Item | Parameters |
|---|---|
| Per-charge capacity | 3t / 6t / 10t / 15t / 20t |
| Tilting angle | 0~45° |
| Operating temperature | 1650~1750℃ |
| Refining cycle | 90~150min/heat |
| Refractory lining | Direct-bonded magnesia-chrome brick / magnesia-calcium brick |
| Lining campaign | 80~120 heats |
| Product carbon content | 0.01%~0.06% adjustable |
| Chromium recovery rate | ≥95% |
| Slag ratio | Approx. 1.0~1.3t slag / t alloy |
2.3 Vacuum Refining Unit (Optional, for ultra-micro-carbon grade C ≤ 0.01%)
Used for ultra-micro-carbon ferrochrome for high-end stainless steel, adopting vacuum decarburization + oxygen blowing refining.
Equipment Types
- VIM (Vacuum Induction Melting Furnace)
- VOD (Vacuum Oxygen Decarburization Furnace)
Key Parameters
| Item | Parameters |
|---|---|
| Vacuum degree | 0.1~10Pa |
| Treatment capacity | 1~10t/heat |
| Refining time | 60~120min |
| Final carbon content | ≤0.01% |
| Oxygen content | ≤30ppm |
| Heating rate | 8~12℃/min |
2.4 Raw Material Batching & Feeding System
- Electronic batching scale: accuracy ±0.1%
- Silos: lime silo, chromite concentrate silo, Si-Cr alloy silo
- Conveying equipment: belt conveyor, vibrating feeder
- Drying equipment: rotary dryer, drying temperature 120~150℃
2.5 Casting & Finished Product Treatment System
- Hot metal ladle: capacity matching refining furnace 3~20t
- Casting mold: cast iron ingot mold / continuous caster
- Crushing equipment: jaw crusher, cone crusher
- Screening equipment: vibrating screen, particle size 10~50mm adjustable
- Granulation equipment (optional): water quenching granulation system for granular ferrochrome
2.6 Flue Gas Purification & Waste Heat Recovery System
Ferrochrome smelting produces large amount of high-temperature dust, so complete environmental protection equipment is required.
Composition
- Waste heat boiler: recover heat from 400~600℃ flue gas to produce steam
- Gravity settling chamber + cyclone dust collector
- High-temperature resistant bag filter
- Induced draft fan, chimney
Parameters
| Item | Parameters |
|---|---|
| Dust removal efficiency | ≥99.5% |
| Emission concentration | ≤10mg/m³ |
| Flue gas treatment capacity | 30000~120000m³/h |
| Waste heat recovery efficiency | 60%~75% |
2.7 Electrical & Automatic Control System
- Main transformer: on-load voltage regulation, constant power control
- Short network: water-cooled copper bar, water-cooled cable, low-loss design
- PLC control system:
- Electrode current and voltage monitoring
- Online monitoring of furnace temperature and vacuum degree
- Automatic batching control
- Energy consumption statistics and reports
3. Typical Grades and Corresponding Equipment Control Indexes
| Grade | C Content | Si Content | Cr Content | Applicable Equipment |
|---|---|---|---|---|
| FeCr65C0.03 | ≤0.03% | ≤1.0% | ≥65% | Refining furnace + vacuum |
| FeCr65C0.06 | ≤0.06% | ≤1.5% | ≥65% | Thermal mixing refining furnace |
| FeCr60C0.10 | ≤0.10% | ≤2.0% | ≥60% | Conventional refining furnace |
4. Economic & Technical Indicators of Complete Production Line (Taking 10t Refining Furnace as Example)
- Daily output: Approx. 100~120t/d
- Comprehensive power consumption: 3200~3800kWh/t product
- Recovery rate: Cr ≥95%, Si utilization rate ≥85%
- Operating rate: ≥90%
- Operating personnel: 12~18 persons/three shifts
Recommended Products
