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Industrial tailings treatment electric furnace equipment

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Industrial tailings treatment electric furnace equipment

Brand Name : Shaanxi Chengda

Model Number : Industrial tailings

Certification : ISO9001

Place of Origin : Shaanxi, China

MOQ : 1set

Price : Price and specific model specifications can be agreed upon.

Payment Terms : L/C,D/A,D/P,T/T,Western Union,MoneyGram

Supply Ability : Complete production supply chain, supply on time, and meet quality standards

Delivery Time : 2 months

Packaging Details : Discuss according to the specific requirements of Party A

Type : Industrial tailings

Country of origin : Shaanxi, China

Core component shelf life : 1year

Delivery standard : New

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Industrial tailings treatment electric furnace equipment is specialized thermal processing machinery that uses electric energy to realize harmless treatment and resource utilization of industrial tailings (mineral waste residues after mineral processing), with core applications in metal recovery and building material conversion.

Core Functions

  • Valuable Metal Recovery: Extracts target metals (e.g., iron, copper, lead, zinc, rare earths) from tailings via high-temperature reduction or smelting.
  • Harmless Stabilization: Fixes heavy metals (e.g., cadmium, arsenic, chromium) in glassy slag through melting, preventing leaching and environmental pollution.
  • Resource Conversion: Converts tailings into reusable materials such as slag aggregates, cement clinker, or ceramic raw materials.
  • Volume Reduction: Reduces tailings volume by 60–80% through melting and solidification, alleviating storage pressure.

Key Technical Principles

  • Operates at 1400–1800°C using electric heating methods like electric arc, resistance, or induction.
  • Tailings are mixed with fluxes (lime, silica, fluorite) and reducing agents (coke powder, coal dust) before entering the furnace.
  • At high temperatures:
    • Organic pollutants are pyrolyzed and decomposed.
    • Metal oxides are reduced to elemental metals or alloys, which settle and separate from slag.
    • Inorganic components form stable, non-toxic glassy slag after cooling.

Common Equipment Types & Characteristics

Equipment Type Core Advantages Applicable Tailings Typical Capacity
Electric Arc Furnace (EAF) High temperature, large capacity, strong adaptability to complex tailings Iron ore tailings, polymetallic tailings 5–50 tons/batch
Resistance Heating Furnace Precise temperature control, low noise, suitable for small-batch high-purity recovery Rare earth tailings, non-ferrous metal tailings 0.5–5 tons/batch
Induction Furnace Fast heating, uniform temperature, low energy consumption Fine-grained tailings, high-value metal tailings 1–10 tons/batch

Typical Application Processes

  1. Pretreatment: Tailings are crushed, dried, and sorted to remove large impurities and adjust moisture content (≤5%).
  2. Batching & Mixing: Mix tailings with fluxes and reducing agents in a specific ratio to optimize smelting conditions.
  3. Electric Smelting: The mixture is fed into the electric furnace for high-temperature reaction (holding time 2–6 hours).
  4. Separation & Recovery: Molten metals are tapped separately for refining; slag is cooled and crushed into building materials.
  5. Gas Treatment: Flue gas is purified via dust removal, desulfurization, and denitrification before discharge.

Core Advantages & Application Scenarios

Advantages

  • Strong adaptability: Handles tailings with complex components, low metal grades, or high moisture content.
  • High resource utilization rate: Metal recovery rate reaches 70–95% (varies by tailing type), and slag utilization rate exceeds 90%.
  • Environmentally friendly: Harmless treatment meets national emission standards, reducing land occupation and pollution risks.

Typical Application Scenarios

  • Iron ore tailings: Recover iron concentrate and produce slag aggregates for road construction.
  • Non-ferrous metal tailings (copper, lead, zinc): Extract target metals and convert slag into cement admixtures.
  • Rare earth tailings: Recover rare earth elements and stabilize radioactive substances.
  • Coal gangue (coal mining tailings): Generate electricity via combustion and produce coal gangue bricks from slag.

Product Tags:

Industrial Tailings

      

Industrial Tailings

      

Industrial Tailings

      
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