Nickel-iron slag sorting treatment and resource utilization solutions

Nickel-iron slag sorting treatment and resource utilization solutions

I. Problems and Opportunities: Say goodbye to stockpiling, and turn slag into gold.

Nickel-iron slag is the main solid waste produced in the process of smelting nickel-iron alloy, which usually contains a small amount of nickel-iron alloy particles that can not be fully recovered (usually between 2% - 8%, or even higher). Traditional stockpiling not only occupies land and wastes resources, but also poses environmental risks.

This nickel-iron slag sorting treatment and resource utilization solutions are designed to recover valuable nickel-iron alloy through efficient sorting, and further use the sorted slag in high value, completely solve the solid waste disposal problems, turn the burden on the environment into sustained profits, and realize the real circular economy.

Second, nickel-iron slag sorting process technology: two-stage recovery, accurate sorting

For the physical characteristics of nickel-iron slag (alloy and slag specific gravity, magnetic differences), we provide a mature core separation process. 1.

1. One-stage crushing, dissociation and pre-enrichment

• Purpose: Through crushing, grinding and other processes, the nickel-iron alloy particles are dissociated from the slag monomer, laying the foundation for efficient sorting.

• Equipments: Jaw crusher, cone crusher, roller crusher, rod mill, etc.

2. Secondary accurate sorting (core link)
According to the alloy content and material characteristics, two kinds of high-efficiency sorting process are recommended:

• Gravity separation method (mainstream and high efficiency)

  • Principle: Based on the huge specific gravity difference between nickel-iron alloy (specific gravity ~ 7.0) and slag (specific gravity ~ 3.0). Under the action of water flow and vibration of shaking table, jigger and other equipments, heavy minerals (alloy) and light minerals (slag) are separated with high efficiency.

  • Advantage:

    • Wide applicability: it is effective for both high nickel and low nickel slag, and is not limited by magnetism.

    • High recovery rate: for the dissociation of sufficient material, the alloy recovery rate can reach 90% - 95%.

    • Environmental protection and economy: no chemicals, water as the medium, low operating costs.

• Magnetic separation (as auxiliary or specific application)

  • Principle: Use the weak magnetism of nickel-iron alloys (some low nickel alloys have stronger magnetism) and the non-magnetic difference of waste slag for sorting.

  • Application: Usually used as a sweeping step after gravity separation to recover micro-fine grained alloys, or to process materials with stronger magnetic properties to further enhance the total recovery rate.

Sorting results: high-grade nickel-iron alloy products can be obtained, which can be directly returned to the smelter for use, with very high economic value.

Third, the value of sublimation: tailings resource utilization, eat up the clean

Tailings after sorting (accounting for more than 95% of the original slag) is the key to realize value-added. We provide a variety of mature resource path:

Core value:

• 100% resource utilization: completely solve the problem of ferronickel tailings disposal, realize "zero emission".

• Green and low carbon: each ton of ferronickel tailings can reduce carbon emissions of about 0.8-1.0 tons, helping the "double carbon" goal.

• Value-added income generation: open up a second profit center in addition to alloy recycling, significantly increase the overall income of the project.

Program Configuration: Flexible Options, Customized Solutions

Customers can choose the most suitable nickel-iron slag treatment program according to the investment budget and the ultimate goal:

• Program A: basic sub-selection

  • Content: Focus on the recovery of nickel-iron alloy.

  • Characteristics: small investment, quick results, core solution to metal recycling, quick cash flow generation.

• Program B: sorting + co-production type (recommended)

  • Content: Alloy recycling + deep processing of tailings (e.g. brick making, road base materials, etc.).

  • Characteristics: Realize the full quantitative utilization of nickel-iron slag solid waste, maximize long-term economic and environmental benefits, and have strong resistance to market risks.

V. Our Advantages

1. Mature and reliable technology: provide a full set of nickel-iron slag sorting treatment and resource utilization process and equipment from crushing and screening - sorting and recycling - tailings molding, with stable equipment operation and guaranteed recovery rate.

2. One-stop service: provide EPC turnkey service, including process design, equipment manufacturing, installation and commissioning, personnel training and operation support.

3. Remarkable economic benefits: Usually the payback period of project investment is within 1-2 years, and the utilization of tailings can continue to create long-term income.

4. Environmental protection and non-pollution: the whole process is physical method, does not produce secondary pollution, environmental protection standards.

The treatment of nickel-iron slag is no longer a cost, but a profitable project with great potential. This nickel-iron slag sorting treatment and resource utilization solution will help you:

• Recover value: extract high-value metal from slag.

• Create value: Turn the tailings into competitive commodities.

• Enhance the image: create the industry benchmark of "green factory" and "waste-free factory".

We look forward to providing you with customized nickel-iron slag treatment technology solutions and feasibility analysis, and jointly create a new chapter of green, recycling and efficient development of the nickel-iron industry, welcome to contact us to get the nickel-iron slag treatment solutions and quotes.