Rotary Kiln Zinc Oxide Recovery Project Solution

This rotary kiln zinc oxide recovery solution is designed for recycling zinc-bearing metallurgical dust and solid waste, such as blast furnace dust, electric furnace dust, zinc-bearing sludge and carbon-containing tailing materials.

After raw material analysis, the zinc-bearing material, reducing agent and auxiliary materials are mixed and fed into the rotary kiln. Under high-temperature reducing conditions, zinc compounds are reduced and volatilized as zinc vapor. The vapor is then oxidized in the gas phase to form zinc oxide dust, which is collected through the cooling and bag filter dust collection system.

The project can be customized according to zinc content, raw material composition, fuel condition, target capacity and environmental requirements. We can support process design, rotary kiln system configuration, dust collection system, installation guidance, commissioning and operation support for zinc oxide recovery projects.

Additional information

Project Type

Rotary Kiln Zinc Oxide Recovery Production Line

Raw Materials

Blast furnace dust, EAF dust, zinc-bearing sludge and metallurgical dust

Main Product

Secondary zinc oxide / zinc oxide dust

Process Route

Rotary kiln pyrometallurgical reduction and volatilization process

Service Scope

Process design, equipment supply, installation guidance and commissioning support

Scope of Supply

  • Raw Material Handling System: Receiving, storage, feeding, conveying and dust control system for zinc-bearing dust and auxiliary materials.
  • Batching & Mixing System: Proportioning, mixing and moisture adjustment equipment for stable kiln feeding.
  • Rotary Kiln System: Rotary kiln shell, kiln drive system, support rollers, thrust rollers, sealing system, refractory lining and kiln inlet/outlet equipment.
  • Fuel & Combustion System: Coal, gas, natural gas or project-specific fuel combustion system according to local energy conditions.
  • Cooling System: Flue gas cooling equipment and related ducting for zinc oxide dust recovery.
  • Dust Collection System: Bag filter, cyclone separator, induced draft fan, ash discharge and pneumatic conveying system.
  • Product Collection System: Zinc oxide dust collection, conveying, storage and packing equipment.
  • Slag Handling System: Slag discharge, cooling and handling system according to project layout.
  • Electrical & Automation System: MCC, PLC control, temperature monitoring, pressure monitoring, alarm system and remote technical support options.
  • Environmental Protection System: Dust control, flue gas treatment and emission control configuration according to local requirements.
  • Auxiliary Equipment: Steel structure, platforms, pipelines, valves, instruments, refractory materials and spare parts.

Inspection, Testing & Technical Review

  • Raw Material Analysis Review: Zinc content, iron content, carbon content, moisture, particle size, chlorine, lead and other key elements should be reviewed before process design.
  • Process Feasibility Evaluation: The process route can be evaluated based on raw material composition, expected recovery rate, fuel condition and product quality target.
  • Material Ratio Optimization: The ratio of zinc-bearing material, carbon-containing material and auxiliary material can be adjusted according to test results and production conditions.
  • Kiln System Review: Rotary kiln diameter, length, slope, rotation speed, lining structure, burner system and residence time can be matched to the project capacity.
  • Dust Collection Review: Cooling system, bag filter, fan capacity, ash discharge system and product collection method can be evaluated.
  • Environmental Review: Dust emission, flue gas treatment, wastewater, slag and noise control should be considered according to local environmental requirements.
  • Commissioning Support: Cold commissioning, hot commissioning, feeding adjustment, kiln temperature control and product quality optimization can be supported.

Project Support Services

  • Technical Scheme Design: Process route, equipment configuration, production capacity and plant layout can be designed according to raw material and project requirements.
  • Complete Equipment Supply: Rotary kiln, feeding system, combustion system, cooling system, dust collection system, product handling system and electrical control system can be supplied.
  • Plant Construction Support: Guidance can be provided for foundation, steel structure, equipment installation, pipeline connection and system integration.
  • Kiln Operation Support: Technical support can be provided for kiln temperature control, material mixing, fuel adjustment, product recovery and slag handling.
  • Production Contracting Option: For some projects, technical production contracting or kiln head operation support can be discussed according to the cooperation model.
  • Technical Upgrade & Repair: Existing rotary kiln production lines can be reviewed for energy saving, recovery improvement, dust control, kiln maintenance and production stability.
  • Remote Technical Guidance: Remote operation consultation and technical troubleshooting can be provided for overseas projects.

Frequently Asked Questions

What raw materials can be treated by this rotary kiln zinc oxide recovery process?
This process can be used for zinc-bearing metallurgical dust and solid waste, including blast furnace dust, electric furnace dust, steelmaking dust, zinc-bearing sludge and carbon-containing tailing materials. The final process route should be confirmed according to raw material analysis.
Yes. We can support new rotary kiln zinc oxide recovery projects, existing kiln technical upgrading, energy consumption optimization, dust collection improvement, kiln repair, commissioning and operation guidance.
Yes. The production line should be designed according to zinc content, iron content, carbon content, moisture, particle size, fuel availability, environmental requirements and target capacity. Material testing or technical evaluation is recommended before final design.

Request a Quote & Technical Matching

Please provide your contact details and project requirements below. Our team will review your request and recommend suitable equipment solutions based on your application, technical needs, and delivery destination.
Site inspection, pre-shipment checking, and project discussion can be arranged for serious buyers.

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