Multimetal tailings synergistic recovery and reclamation process solutions

Overview of the process

Polymetallic tailings are composite tailings resources containing two or more valuable metal components, characterized by complex composition, low grade and fine embedded particle size. It is difficult to realize the efficient comprehensive utilization of resources by the traditional single recovery process. Multi-metal tailings synergistic recovery and re-election process solution adopts the innovative concept of "synergistic recovery and graded extraction", and through multi-technology coupling and process optimization, it realizes the comprehensive recovery of various valuable metals in tailings, and maximally improves the utilization rate of resources.

Process Characteristics

• Synergistic and efficient: through the optimization of process flow, it realizes the synergistic recovery of many kinds of metals and improves the overall recovery efficiency.

• Economy and environmental protection: Reduce the unit cost of metal recovery, reduce the consumption of chemicals and energy consumption, and realize clean production.

• Strong adaptability: process parameters and process combinations can be flexibly adjusted according to different tailings characteristics.

• High degree of resource utilization: the final tailings can be harmless treatment or resource utilization.

Core technology flow

1. Tailings characteristics analysis and program customization

• Multi-element rapid detection: using XRF, ICP-MS and other advanced equipment to analyze the tailings in a variety of valuable metal content

• Process mineralogy research: identify the existence state, embedded characteristics and symbiotic relationship of the main valuable elements.

• Synergistic recovery program design: design the optimal metal recovery sequence and process combination according to mineral properties.

2. Pretreatment and mineral dissociation

• Activated grinding: adopt stage grinding process, control the appropriate grinding fineness, and promote the full dissociation of useful minerals.

• Classification pretreatment: Classify the ore according to particle size to improve the efficiency of sorting.

• Surface modification: using physical or chemical methods to change the surface properties of minerals to enhance the sorting effect.

3. Multi-metal synergistic recovery process

Combined gravity separation-flotation process

• Heavy first, then flotation: first use gravity separation to recover coarse-grained heavy metal minerals, then use flotation to recover fine-grained useful minerals.

• Float first and then heavy: first use flotation to recover easy-to-float minerals, and then use gravity separation to recover heavy minerals.

• Heavy flotation alternation: flexible combination of gravity separation and flotation according to mineral characteristics

Combined magnetic separation-flotation process

• Magnetic first, then flotation: first use magnetic separation to recover magnetic minerals, then use flotation to recover non-magnetic minerals.

• Float first and then magnetic: first use flotation to recover easy-to-float minerals, and then use magnetic separation to recover magnetic minerals

• Combined magnetic flotation: magnetic separation and flotation work together to improve the efficiency of separation

Combined chemical leaching and adsorption process

• Sequential le aching: according to the leaching characteristics of different metals, adopt step-by-step leaching process.

• Synergistic le aching: develop compound leaching agent to realize simultaneous leaching of various metals.

• Selective adsorption: adopt special adsorption materials to realize selective recovery of specific metals.

4. Wastewater treatment and resource reuse

• Graded reuse: According to the water quality requirements of different processes, realize wastewater graded reuse.

• Valuable metal recovery: recovering residual valuable metals from wastewater.

• Deep treatment: adopt advanced oxidation, membrane separation and other technologies to realize wastewater discharge or reuse.

Typical process combination program

Recovery of copper-lead-zinc polymetallic tailings

Adopt "flotation - gravity separation - leaching" combined process:

1. Prioritize flotation to recover copper and lead minerals

2. Gravity separation to recover zinc minerals

3. Leaching to recover residual valuable metals

Recovery of gold-silver-platinum group metal tailings

Adopting the combined process of "Gravity Concentration - Flotation - Cyanidation":

1. Pre-enrichment of coarse precious metals by gravity separation

2. Flotation to recover fine-grained precious metals

3. Recovery of fine-grained precious metals by cyanide leaching

Rare earth-niobium-tantalum polymetallic tailings recovery

Adoption of "magnetic separation - flotation - electrostatic beneficiation" combined process:

1. Pre-enrichment by strong magnetic separation

2. Separation of rare earth minerals by flotation

3. Recovery of niobium-tantalum minerals by electrostatic beneficiation

Technical Advantages

1. High recovery rate

   • Significantly increase the recovery of multiple metals through the combination of multiple processes

   • Reduce the loss of valuable metals in tailings

2. Good economic benefits

   • Realize multiple recoveries from one mine, and enhance the economic benefits of the project

   • Reduce unit metal recovery cost

3. Environmentally friendly

   • Reduce the amount of tailings stockpile, reduce environmental risks

   • Realize wastewater recycling, reduce fresh water consumption

4. Advanced technology

   • Integration of various advanced sorting technologies

   • Intelligent control system ensures stable operation

Successful Applications

Our multi-metal tailings synergistic recovery process has been successfully applied in many projects, especially in a complex multi-metal tailings re-election project, through the use of customized synergistic recovery process, while recovering a variety of valuable metals, such as copper, lead, zinc, gold, silver, etc., and achieve significant economic and environmental benefits.

Technical Services

• Comprehensive evaluation of polymetallic tailings resources

• Design and optimization of synergistic recovery process

• Selection and configuration of specialized equipment

• Production line installation and commissioning

• Technical personnel training

• Production optimization and technical support

If you need to know the detailed solution of cooperative recycling process of multi-metal tailings or technical consultation, please contact us, we will provide you with the most optimized solutions and quotations.