Incineration Bottom Ash SortingEquipment Overview

An efficient incineration bottom ash sorting system is a sophisticated combination of the following types of equipment. They work together in accordance with the process sequence, and ultimately achieve the goal of metal recovery and tailing resources.

1. Feeding and pretreatment equipment

This kind of equipment is the "throat" of the production line, responsible for receiving raw materials and preparing for the subsequent processes.

• Plate feeder: forced uniform feeding, especially for large, wet materials, can effectively prevent blockage, to ensure the stability of the subsequent process.

• Vibrating feeder: also used for uniform feeding, can be evenly transported to the screening or crushing equipment.

• Tumbler screen: responsible for the initial screening and bag breaking, the raw material according to different particle size classification, and separate out the large debris, and its anti-clogging design is crucial for the treatment of wet sticky slag.

2. Crushing equipment

This type of equipment is the "prerequisite" for efficient metal recovery, and is responsible for processing the material to a state suitable for sorting.

• IBA special crusher: The core role is to crush the large incineration bottom ash into uniform particle size (usually less than 50mm), to realize the full dissociation of metal and slag, and to lay the foundation for high sorting rate. Its high strength and wear resistance is the key.

3. Core sorting equipment

This is the "value core" of the whole system, which directly determines the metal recovery rate and economic benefits.

• Magnetic separator: an expert in iron metal recovery. Adopting high-strength permanent magnet design, it can efficiently and automatically adsorb and separate out all ferromagnetic materials (such as iron lumps and iron chips).

• Eddy Current Sorting Machine: Specialist in non-ferrous metal sorting. It is used for sorting copper, aluminum, zinc and other non-ferrous metals. It generates repulsive force through eddy current effect to precisely separate non-ferrous metals from other materials, which is the key equipment to enhance production value.

• Gravity sorting equipment: heavy material and precious metal hunter.

  • Jigger: utilizing water flow and gravity, separating heavy minerals such as stainless steel and zinc according to the difference of specific gravity, and enriching trace gold and silver, with the advantage of saving water and energy.

  • Shaking table: carries out fine sorting, effectively recovers copper sand and precious metal concentrates such as gold and silver through the reciprocating motion of the bed, which greatly enhances the added value of the project.

4. Dewatering and environmental protection treatment equipment

This kind of equipment is the "guardian" for realizing "closed-loop environmental protection" and resource utilization.

• Dewatering screen: to carry out preliminary dewatering of materials and recover part of the fines.

• Filter press: the key equipment to realize the complete separation of slag and water. Through high-pressure pressing, it produces dry slag cake with low water content (convenient for resource utilization), while the filtered water can be returned to the system for recycling, realizing zero sewage discharge.

• Screw sand washer: it is used to clean and dewater fine-grained materials and enhance the cleanliness and value of tailings.

5. Conveying and connecting equipment

This type of equipment is the "artery" that connects the whole system and ensures the smooth running of materials.

• Belt conveyor: the main line of conveyor equipment, connecting the various processes.

• Screw conveyor: suitable for short-distance conveying of powdery and granular materials, especially suitable for inclined or vertical conveying.

6. Intelligent control system

The "brain" of modern high-efficiency production line.

• PLC central control system: realizes centralized control, chain start/stop, fault alarm and parameter adjustment of the whole production line, which greatly improves the degree of automation, reduces the labor cost, and guarantees the stable and efficient operation.

How to choose the right combination of equipment?

Core principle: there is no best single machine, only the most suitable system. The choice and combination of incineration bottom ash residue equipment depends on:

1. Processing scale: 200 tons / day and 2000 tons / day equipment specifications are completely different.

2. Raw material characteristics: metal content, particle size, humidity, etc. determine the focus of the process.

3. Product program: whether to focus on metal recovery, or take into account the deep processing of tailings?

4. Investment budget: under the premise of meeting the core process, optimize the configuration.

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