Methods for Recycling Used Refrigerators

At present, the best method for disposing of waste refrigerators is to use efficient, environmentally friendly, and cost-effective machine dismantling technology, which is the waste refrigerator crushing and separation line. This technology can effectively solve the problems of low efficiency and high cost in manual disassembly, enabling efficient disposal of discarded refrigerators. The process flow of the waste refrigerator crushing and separating machine mainly includes three steps: shredding, crushing, and sorting. Through these steps, the waste refrigerator can be quickly broken and materials such as plexiglass, metal and foam plastic can be separated.

Recyclable materials for waste refrigerators

The common recyclable materials in used refrigerators mainly include metal materials (such as iron, copper, aluminum), which are mainly present in the outer shell, compressor, condenser and other components of the refrigerator, and have high recycling value. They can be used to manufacture new metal products; Plastic materials (such as polystyrene and polypropylene) mainly constitute the drawers, partitions, door panels, and other components inside the refrigerator. After recycling, they can be used to manufacture insulation materials, packaging materials, woven bags, and other products; In addition, there are foam materials, which mainly exist in the refrigerator door seam and insulation layer, and can be used to manufacture new insulation materials; And the lubricating oil in the compressor can be used for lubrication of other mechanical equipment or waste oil recycling after treatment. At the same time, waste refrigerators also contain small amounts of rare and precious metals (such as lithium, titanium, gold, silver, etc.), which although difficult to extract, have extremely high recycling value. The recycling and reuse of these materials not only helps to save resources, but also reduces environmental pollution and promotes the development of circular economy.

Recycling production line

Technological process

In the preprocessing stage, the waste refrigerator is first subjected to preliminary crushing by a shredder, which breaks it down into smaller fragments. This process provides convenience for subsequent processing, while the use of pulse dust collectors ensures a clean working environment and avoids interference from dust and impurities. Subsequently, these fragments are sent to a pulverizer for refinement, making their particle size more uniform and preparing for the material separation stage.

The material separation stage is the core of the refrigerator recycling process. Through the action of magnetic separation conveying and magnetic separator, iron materials are effectively separated from fragments and have high recycling value. Next, the foam separation equipment removes the insulation material from the refrigerator to prepare for metal separation. Then, the eddy current separator uses the principle of electromagnetic induction to separate non-ferrous metals such as copper and aluminum from the fragments, which also have high economic value.

In the final processing stage, the remaining materials after material separation, such as plastics and other non-metallic materials, are sent to the corresponding processing equipment for further processing. After drying, cleaning, and other treatments, these materials can be used to manufacture new plastic or other non-metallic products. At the same time, in order to ensure the efficiency and safety of the recycling process, it is necessary to classify, store, and transport waste throughout the entire process to achieve maximum resource utilization and minimize environmental pollution.

Recycled materials

The advantages of recycling

The use of mechanical recycling of waste refrigerators has demonstrated significant advantages in multiple aspects. Firstly, in terms of efficient resource utilization, advanced processes and technologies such as automated dismantling machines, air separation, magnetic separation, vortex selection, etc. can efficiently dismantle waste refrigerators into various raw materials such as plastic, copper, aluminum, etc. According to rough statistics, a discarded refrigerator can contain 9 kilograms of plastic, 1.3 kilograms of copper, and 0.6 kilograms of aluminum. These materials can be reprocessed and used in various fields such as steel manufacturing, home appliances, and automobile production, achieving efficient and circular utilization of resources. Secondly, from an environmental perspective, mechanical recycling avoids the emission of harmful substances such as lead, mercury, cadmium, etc., making it environmentally friendly.