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{"title":"Chrome Corundum Furnace","imgUrl":"https:\/\/img.chinax.com\/nimg\/fe\/30\/eec39479584b907ea50d7a6086a9-200x200-1\/chrome_corundum_furnace.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
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The chrome corundum furnace is a three-phase tilting electric arc smelting furnace. It takes industrial alumina and chromium oxide powder as main raw materials. Through ultra-high temperature arc melting and reduction crystallization, it produces chrome corundum (chromium single-crystal corundum).
The finished product features high hardness, high toughness, high temperature resistance, and acid & alkali corrosion resistance. It is widely used in precision abrasives, stainless steel / high-speed steel grinding, ceramic refractory materials, special wear-resistant parts, high-end sandblasting and polishing industries.
1.2 Structural Features
Adopts hydraulic tilting electric arc furnace overall structure:
Furnace Body: Welded steel plate shell lined with high-temperature resistant refractory castable; high overall strength, excellent thermal shock resistance.
Furnace Roof: Enclosed water-cooled furnace cover, reserved with electrode holes, feeding holes and dust removal & smoke exhaust interfaces.
Electrode System: Graphite electrode with hydraulic / frequency conversion lifting; PLC intelligent constant power adjustment for stable arc temperature.
Short Network System: Water-cooled cables and copper conductive cross arm; balanced three-phase current and low heat loss.
Tilting System: Hydraulic drive for smooth furnace tilting and discharging, no impact and high safety.
Cooling System: Circulating forced water cooling for furnace roof, conductive cross arm and water-cooled cables; equipped with water pressure and temperature monitoring and alarm.
Control System: Fully automatic electric control cabinet, real-time monitoring of current, voltage, furnace temperature and cooling parameters.
1.3 Working Principle
Three graphite electrodes are energized to generate electric arcs, forming an ultra-high temperature zone above 2000℃ inside the furnace to melt the mixed materials of alumina and chromium oxide.
After high-temperature melting and alloying reaction, the molten liquid is poured, slowly cooled, crystallized, crushed, screened and magnetically separated to make chrome corundum abrasives of various particle sizes.
2. Main Technical Parameters (Standard Common Models)
Parameter Item
Technical Specification
Furnace Type
Three-phase AC hydraulic tilting electric arc furnace
Melting Capacity per Batch
5–15 t/furnace
Transformer Rated Capacity
3000KVA / 5000KVA / 6300KVA
Primary Input Voltage
10KV
Secondary Working Voltage
100–220V Stepless Regulation
Graphite Electrode Diameter
400–500mm
Electrode Lifting Mode
Automatic hydraulic lifting, PLC constant current arc control
Melting Working Temperature
2000–2300℃
Unit Power Consumption
1700–2100 KWh/t
Discharging Tilt Angle
Forward 45°
Cooling Mode
Circulated pure water forced cooling
Power Supply Standard
3-phase, 50Hz, 10KV
Control Mode
PLC full automatic control + HMI monitoring
3. Physical & Chemical Index of Chrome Corundum Finished Product
Performance Index
Standard Parameter
Al₂O₃ Content
97.0%~99.0%
Cr₂O₃ Content
1.5%~3.0%
Mohs Hardness
≥9.0
Melting Point
Approx. 2040℃
Bulk Density
≥3.85 g/cm³
Application
Special for precision grinding, stainless steel and alloy steel
Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall... Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall...