How to sort metals from incineration bottom ash residue?

In today's increasingly popular household waste incineration power generation, incineration after the incineration of the incineration of the bottom ash contains a large number of recyclable metal resources. How to efficiently sort these metals to achieve "waste to treasure", has become the focus of attention of many waste-to-energy enterprises. This article will provide you with a detailed analysis of the whole process of incineration bottom ash separation of metals.

Sorting principle: physical methods, accurate extraction

Incineration bottom ash slag metal sorting mainly adopts physical sorting methods, through multiple process links, to achieve the precise recovery of different metals:

Pre-treatment
Incineration bottom ash slag first through the tumbler screen for particle size classification, to remove large debris, to create good conditions for subsequent sorting.

Crushing and dissociation
Special crusher is used to crush the slag to a uniform particle size, so that the metal substances are fully dissociated to facilitate the subsequent sorting.

Core sorting stage
This is the key link of metal recovery, using a variety of sorting equipment to work together:

• Magnetic separator: utilizing strong magnetic design, highly efficient recovery of ferrous metals

• Eddy current sorters: specializing in the separation of non-ferrous metals such as copper, aluminum, zinc, etc.

• Jig and Shaker: Fine recovery of precious metals through gravity sorting principle.

Dewatering
Dewatering screen and filter press realize the separation of slag and water, and the separated water can be recycled to ensure environmentally friendly production.

Technical advantage: efficient recovery, economic and environmental protection

Modern incineration bottom ash slag metal sorting technology has significant advantages:

• High recovery rate: iron, copper, aluminum, stainless steel and precious metals industry-leading comprehensive recovery rate

• Environmental protection and energy saving: the whole process of physical sorting, no chemical additives, circulating water system to achieve zero pollution

• Fast return on investment: the investment cost can be recovered in 10-18 months.

• Intelligent control: high degree of automation, easy to operate, low operating costs.

Application effectiveness: mature and reliable, trustworthy

The sorting technology has been successfully applied in many projects in China, with single line capacity ranging from 200 tons/day to 2000 tons/day, creating significant economic and environmental benefits for customers.

Incineration bottom ash slag metal sorting is not only a technology, but also an important part of resource recycling. Through the scientific sorting process, not only can effectively recover valuable metal resources, but also the remaining tailings into building materials, to truly realize the "drained".

If you need to know more detailed incineration bottom ash sorting solutions or get customized suggestions, welcome to contact our professional technical team, we will be happy to serve you.