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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!
Coal Gangue Fused Mullite Electric Arc Furnace 4000kVA Mullite Refractory Smelting Equipment Solid Waste Recycling
| Place of Origin | Shaanxi, China |
|---|---|
| Brand Name | Shaanxi Chengda |
| Certification | ISO9001 |
| Model Number | CD-MUL-4000 |
| Minimum Order Quantity | 1 set |
| Price | To be negotiable |
| 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 |
| Furnace Type | Electric Arc Furnace (Fused Mullite) | Transformer Capacity | 4000 KVA (customizable) |
|---|---|---|---|
| Smelting Temperature | 1900-2100 Deg C | Feed Materials | Coal Gangue, Bauxite, Alumina |
| Output Product | Fused Mullite M60/M70 Aggregate | Batch Capacity | 5-8 T Per Heat |
| Electrode Diameter | 350 Mm Graphite Electrode | Power Consumption | 2000-2500 KWh/t Mullite |
| Discharge Mode | Tilting Pouring / Bottom Tapping | Cooling System | Closed-loop Water Cooling With Interlock |
| Highlight | coal gangue mullite electric arc furnace,mullite refractory smelting equipment,solid waste recycling furnace |
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Coal Gangue Fused Mullite Electric Furnace Overview
The coal gangue fused mullite electric arc furnace is a high-temperature electric melting furnace specially designed for the resource utilization of coal gangue, a major industrial solid waste. Through proportioning coal gangue with bauxite and alumina and melting the charge in an electric arc furnace at 1900-2100°C, the equipment produces high-grade fused mullite (M60/M70) refractory aggregate. This turns solid waste into a high-value refractory raw material for the steel, cement, glass and ceramics industries, realizing both environmental protection and economic benefit.
Core Features
- Solid Waste Resource Utilization: Directly consumes coal gangue stockpiles and washing rejects, converting low-value aluminosilicate waste into premium fused mullite refractory material with high added value.
- Stable Mullite Grade: Accurate proportioning control and submerged arc melting guarantee complete mullitization with low free silica and uniform crystal structure, producing M60/M70 fused mullite meeting refractory raw material standards.
- High-Temperature Arc Melting: Electric arc heating maintains a stable molten bath above 1900°C, fully homogenizing the melt and removing iron impurities through reduction, improving aggregate density and thermal shock resistance.
- Energy and Cost Efficiency: Optimized furnace lining and electrode control lower unit power consumption to 2000-2500 kWh per ton of mullite, with 24-hour continuous operation for large-scale solid waste treatment.
- Environmental Compliance: Closed-loop water cooling, fume collection and dedusting systems control dust and exhaust emissions during gangue melting, meeting industrial environmental standards.
Main Technical Parameters
| Parameter | Value |
|---|---|
| Furnace Type | Electric Arc Furnace (Fused Mullite) |
| Transformer Capacity | 4000 kVA (customizable) |
| Smelting Temperature | 1900-2100°C |
| Feed Materials | Coal gangue, bauxite, alumina |
| Output Product | Fused mullite M60/M70 aggregate |
| Batch Capacity | 5-8 t per heat |
| Electrode Diameter | 350 mm graphite electrode |
| Power Consumption | 2000-2500 kWh/t mullite |
| Discharge Mode | Tilting pouring / bottom tapping |
| Cooling System | Closed-loop water cooling with interlock |
Production Process
Coal gangue is crushed, ground and proportioned with bauxite and alumina to the mullite composition, then continuously charged into the furnace. The electric arc melts the charge into a homogeneous liquid; iron oxide in the gangue is reduced and settles as a metal layer for separate removal. The purified mullite melt is poured or tapped, cooled, crushed and classified into M60/M70 fused mullite aggregates for refractory production.
Application Fields
- Fused mullite raw material for refractory castables, bricks and kiln furniture;
- Coal gangue comprehensive utilization projects and industrial solid waste parks;
- High-temperature furnace lining materials for steel, cement, glass and ceramics industries.
Selection Guidance
Please provide your coal gangue output, alumina and silica content analysis, and target mullite grade, and our engineers will design the proper proportioning and furnace configuration. Contact us for a customized solid waste utilization proposal and quotation.

