After the incineration of domestic waste to generate electricity, the incineration of the bottom ash residue is not useless "waste", but a sleeping "urban mine". Through advanced physical sorting technology, we can wake up this mine, it will be converted into a variety of valuable products. So, what products can be obtained after incineration bottom ash slag sorting? Where do these products go, create what value? This article will reveal for you one by one.

First, high-value metal products: from recycling to regeneration

One of the core objectives of incineration bottom ash sorting is to efficiently recover the various types of metals contained therein. After "crushing - screening - magnetic separation - gravity separation - eddy current separation" and other processes, we can get the following types of metal products:

1. Ferrous metal

   • Source: Mainly extracted by permanent magnetic separator with high efficiency.

   • Usage: As a high-quality raw material of scrap steel, it is sold to iron and steel smelting enterprises, smelted back to the furnace to make new steel, and re-entered into the metal recycling chain.

2. Non-ferrous metals: copper, aluminum, zinc, etc.

   • Source: Precisely separated mainly by Eddy Current Sorting Machine.

   • Uses:

     • Copper: as raw materials of brass and copper, supplying to copper processing plants for the production of electric wires, plumbing equipment, alloys and so on.

     • Aluminum: As raw material of recycled aluminum, used in the manufacture of auto parts, profiles, packaging materials, etc.

     • Other non-ferrous metals such as zinc also enter the corresponding recycling market.

3. Stainless Steel

   • Source: Recycled through specialized stainless steel sorting machines.

   • Uses: As stainless steel scrap, it is reused in stainless steel product plants to produce new corrosion-resistant equipment and building materials.

4. Trace precious metals: gold, silver, etc.

   • Source: Fine recovery and enrichment through gravity sorting equipment such as jigs and shakers.

   • Usage: Very high value, can be further purified and refined, and then sold to refineries as raw materials of precious metals, used in electronics, jewelry and other industries.

✅ Value Summary: Metal recovery creates a direct economic return and is the key to a fast payback (usually 10-18 months ) for incineration bottom ash sorting projects. We provide sorting solutions metal recovery rate industry-leading, to ensure that customers maximize revenue.

Second, environmental protection building materials products: tailings of the "gorgeous transformation"

After the metal is fully recovered, the remaining tailings are not discarded, but to achieve the "last mile" of resource utilization. After dehydration and stabilization, these tailings can be transformed into environmentally friendly building materials in line with national standards.

1. Raw material for brick making

   • Uses: Replacing traditional clay or gravel, it is used to produce environmentally friendly bricks, paving bricks, permeable bricks, etc. The strength and durability can meet the requirements.

2. Cement Admixture

   • Uses: Used as auxiliary cementitious materials or admixtures in the cement production process, partially replacing natural resources and reducing the cost of cement production.

3. Road base/bedding material

   • Uses: Widely used in the base or bedding layer of roads, squares and other construction projects, replacing natural sand and gravel, saving the cost of mining, with stable and reliable performance.

4. Concrete Aggregate

   • Uses: After strict quality control, it can be used as aggregate for preparing low-grade concrete for non-structural components or flooring, etc.

✅ Environmental certification: The tailings from our sorting system comply with the GB/T25032-2010 building materials standard, ensuring its environmental safety and application reliability, and truly realizing "0 solid waste to landfill".

Summary: The perfect closed loop from "waste" to "resource".

Through IbaSorting's incineration bottom ash sorting solution, domestic waste incineration bottom ash has been completely resourceful, forming a clear product map and value closed loop:

• Metal products → into the metallurgical industry, recycling.

• Tailings products → into the building materials industry, replacing natural resources.

This not only brings sustainable economic returns for waste incineration power plants and incineration bottom ash treatment enterprises, but also greatly reduces the landfill footprint, avoiding waste of resources and environmental pollution, which is a perfect interpretation of the concept of "let every ton of incineration bottom ash, all produce value".

If you want to know how to achieve higher value return for your incineration bottom ash resources, please feel free to contact us for professional customized sorting solutions and quotations!