Stainless steel slag sorting treatment and resource utilization solutions

Stainless steel slag sorting treatment and resource utilization solutions

Stainless steel slag recycling process, stainless steel slag comprehensive treatment program

I. Solution Overview

Stainless steel slag (also known as nickel-iron slag) is the smelting of stainless steel produced in the process of industrial waste containing nickel-iron alloy. Our company provides a full set of stainless steel slag sorting treatment and resource utilization solutions, not only through efficient, environmentally friendly sorting technology from the slag recovery of high-value nickel-iron alloy, and more innovative to promote the sorting of the tailing slag of the resource utilization for customers to create a "recycling - use of the" integration of the circular economy model, to achieve environmental benefits and the double maximization of economic benefits. Double maximization of environmental and economic benefits.

Second, the core stainless steel slag treatment process and technology

For the different content of nickel-iron alloy in stainless steel slag, we provide two kinds of proven and efficient stainless steel slag sorting process to ensure accurate recovery.

1. magnetic separation recovery process (for low nickel alloy stainless steel slag)

• Working principle: Based on the difference in magnetic conductivity between materials. Low nickel alloy has high magnetic conductivity, while the slag is basically non-conductive. Through high-performance magnetic separation equipment, it can efficiently adsorb and separate the low nickel alloy with strong magnetism, and the non-magnetic slag is excluded.

• Technical advantages: simple sorting process, large processing capacity, low operating costs, and very high recovery efficiency.

2. re-election recovery process (for high nickel alloy stainless steel slag)

• Working principle: based on the specific gravity difference between nickel-iron alloy and slag. Although the high nickel alloy has poor magnetic conductivity, its density is much higher than the smelting slag. We use advanced shaking table and other re-election equipment, the use of gravity, water flow and bed vibration of the combined effect of the high specific gravity of the alloy particles and low specific gravity of the slag effective separation.

• Technical advantage: no requirement for the magnetic properties of the material, high sorting precision, especially suitable for handling high-value high nickel slag material which is difficult to be effective by magnetic separation method.

Selection guide: the correct distinction between the slag to be treated belongs to the high nickel alloy slag or low nickel alloy slag is the key to success, the two require completely different core technology and equipment.

Third, the resource utilization of the tailing slag after sorting (the core of circular economy)

We not only help you efficiently recover metals, but also has the industry's leading tailing slag resource utilization technology, to truly realize the "eat dry and squeeze clean", a complete solution to the problem of solid waste disposal.

• Core value:

  • 100% Resourcefulness: Completely solve the environmental risks and land occupation problems brought about by stainless steel tailings stockpiling.

  • Green and low carbon: each ton of tailings resource utilization can reduce about 0.8 tons of carbon emissions on average, helping enterprises to achieve the dual-carbon goals.

  • Value-added income generation: turning waste into treasure, creating the second profit growth point in addition to alloy recycling.

• High-value utilization direction:

  • Mining filler material: used for mine backfill, reducing the cost of mine backfill repair.

  • Raw material for cement production: rich in iron and silica, it can be used as raw material for cement, effectively reducing the cost of cement production.

  • Road base material: used in road base layer and bedding construction, the performance is fully in line with the engineering construction standards.

  • New building material products: produce green building material products such as no-burn bricks, permeable bricks, blocks, etc., which have a broad market prospect.

  • Concrete Admixture: Fine grinding as mineral admixture can improve the working performance and durability of concrete.

  • Gel material for roads: replacing cement with low cost and huge market.

  • Firing-free ceramic granule: lightweight building materials, firing-free process.

Fourth, stainless steel slag treatment program configuration selection recommendations

Customers can choose flexibly according to the actual investment budget and resource utilization goals:

• Program A: separate sorting program

  • Content: focus on the recovery of nickel-iron alloy in stainless steel slag.

  • Features: relatively small investment, quick results, the core solution to the problem of metal recovery.

• Option B: sorting + resource co-production program

  • Content: On the basis of metal recovery, supporting the construction of tailings deep processing production line to produce the above high-value building materials products.

  • Features: realize the full quantitative utilization of solid waste, maximize the long-term comprehensive benefits, and bid farewell to the cost of solid waste disposal.

V. Stainless steel slag sorting and processing performance characteristics

1. High return on investment: small investment in the production line, low operating costs, recovery of high-value metals from slag and generate derivative income, significant economic benefits.

2. Excellent recovery rate: the comprehensive recovery rate of nickel-iron alloy can reach more than 90%, greatly tapping the value of waste materials.

3. Green environmental protection: the whole physical sorting process, without adding chemicals, no wastewater, exhaust gas emissions, no secondary pollution, environmentally friendly.

4. Strong adaptability: dual process route covers a wide range, can handle almost all types of stainless steel slag, to solve the diverse needs of customers.

5. Mature and reliable technology: process design is simple and efficient, equipment operation is stable, easy maintenance.

This stainless steel slag sorting treatment and resource utilization solutions will be the perfect combination of environmental protection needs and resource value recovery, not only solves the stainless steel enterprise solid waste disposal problems, but also through the circular economy model will be transformed into a new profit center. We can provide customized stainless steel slag treatment solutions from single sorting to full quantitative utilization according to the specific material characteristics and development planning of customers, helping you win the economic benefits and environmental reputation of the double harvest.