The question about the copper content in refrigerator compressors often arises among those who recycle old equipment or plan to hand over the metal to collection points. Compressor is the heart of the refrigeration unit, and it is in it that the bulk of non-ferrous metals of commercial value are concentrated. However, the exact weight of copper that can be extracted varies greatly depending on the model, year of manufacture and manufacturer of the unit.
Many people mistakenly believe that the entire compressor is made of copper, but this is not the case. The design includes a steel body, oil, refrigerant and, of course, an electric motor with windings. Extraction efficiency directly depends on how correctly the dismantling and disassembly of the components is carried out. On average, the percentage of useful metal in the total mass of the device ranges from 10 to 20%, although visually this may seem large.
In this article we will analyze in detail how many kilograms of copper can be obtained from one compressor, what factors influence this indicator and whether the game is worth the candle. Disassembly requires certain skills and tools, as well as compliance with safety measures, since there may be compressed gas and technical oil inside.
Compressor design and distribution of metals
To understand where copper comes from, you need to look inside sealed casing. A compressor is a complex unit where each element performs its own function. The bulk of the body is black steel, which protects the internal mechanisms from external influences and ensures the tightness of the system.
Inside the housing there is the compressor unit itself (piston group) and the electric motor. It electric motor contains copper stator windings, which are of interest for delivery. The engine rotor is usually made of steel plates, but the windings are pure non-ferrous metal.
⚠️ Attention: Inside the compressor there is technical oil and freon under pressure. It is strictly forbidden to open the housing with a grinder or a hacksaw without first bleeding the gas and draining the oil, since a spark can ignite the refrigerant vapor.
Pipelines going outside are also often made of copper, but their weight is small compared to the motor windings. In modern models, manufacturers can use aluminum for some parts of the heat exchanger, but in the compressor engine itself windings remain predominantly copper due to high electrical conductivity.
The average weight of copper in different types of compressors
The amount of copper directly depends on the power engine and refrigerator dimensions. Single-chamber models have less powerful units than double-chamber or industrial installations. Standard household the compressor weighs assembled from 8 to 12 kg, but there is much less useful copper in it.
If we consider powerful inverter models, then the content non-ferrous metal may be higher there due to the more complex design of the windings and the use of high-quality materials. However, the trend towards cheaper production leads to the fact that in new models the wire cross-section may be smaller and the number of turns optimized.
It is important to consider the condition of the unit. If the compressor burns out, the copper inside could oxidize or blacken, which reduces its value upon receipt. Burned Insulation complicates the extraction process, making it more labor-intensive.
Below is a table showing the approximate copper content of compressors of different capacities and type:
| Compressor type | Total weight (kg) | Copper weight (approximately, kg) | Metal yield (%) |
|---|---|---|---|
| Low-power (single-chamber) | 8-9 | 0.8 - 1.2 | ~10-12% |
| Medium power (standard) | 10-11 | 1.3 - 1.8 | ~13-15% |
| High power (Side-by-Side) | 12-14 | 2.0 - 2.5 | ~15-18% |
| Industrial/Linear | 15+ | 3.0+ | ~18-20% |
Factors influencing the amount of copper
Why may the numbers differ? First of all, it depends on year of manufacture equipment. In old Soviet refrigerators, such as ZIL or Biryusa early series, they did not skimp on materials, and the windings were made of thick wire with a high content of pure metal.
Modern manufacturers strive for energy efficiency and weight reduction. The use aluminum alloys in some components (although not in the motor windings) and reducing the wire cross-section affect the final delivery weight. The brand also plays a role: European models often contain more non-ferrous metals than their budget Chinese counterparts.
Another factor is the type of winding. Some engines do not use pure copper, but copper-plated aluminum. It is difficult to distinguish them visually, but when cut, the aluminum will be white. The weight of such metal is much less, and it is valued according to the tariff for mixed alloys.
Technology for extracting copper from a compressor
The process of extracting non-ferrous metal begins with preparing the workplace. You will need a grinder, hammer, chisel, pliers and a container to drain the oil. The first step is to cut off the top part of the steel body or carefully knock out the bottom to gain access to the insides.
After opening, drain the used oil. It may be toxic, so place it in an airtight container for later disposal. Next it is removed stator with windings. It is this part that is subject to further processing to extract copper.
☑️ Algorithm for disassembling the compressor
The most labor-intensive stage is removing the windings. They can be burned out (which degrades the quality of the metal and creates harmful smoke) or carefully drilled out and knocked out. The second method is more labor-intensive, but allows you to preserve purity copper, which is highly valued by receivers.
⚠️ Attention: When the windings are burned, caustic substances are released. Work should only be carried out outdoors using a respirator. It is better to use a mechanical method of removing the wire.
Economic feasibility and scrap delivery
Is it worth disassembling for profit? If you have one old refrigerator, then probably not. The cost of electricity for an angle grinder, tools and time may not be worth it. However, if we are talking about batch of 10-20 compressors, then copper mining becomes profitable.
The price of copper scrap fluctuates (fluctuates) depending on stock exchange quotes. Cleaned copper (piece, burnt) is more expensive than mixed scrap. Therefore, high-quality separation materials are the key to maximum profit.
What to do with the remaining parts of the compressor?
The steel body and internal parts (pistons, shafts) can be sold as ferrous steel (Fe). Aluminum elements, if any, are sorted separately. Oil is subject to mandatory disposal at specialized points.
Do not forget that scrap metal collection points may underestimate the weight or category of metal if they see traces of burnout or the presence of non-metallic inclusions. The purity of the delivered material is the main argument in the bargain.
Environmental aspects recycling
You cannot simply throw the compressor into the trash container. This violates environmental standards, as refrigerant residues and oil pollute the soil and atmosphere. Delivery to a specialized point is not only a way to make money, but also civic duty.
Modern refrigerants may be safe for the ozone layer, but when burned they form toxic compounds. Therefore sealed housing you cannot cut without preparation. Professional recyclers have equipment for safely pumping out freon.
By handing over the equipment officially, you contribute to the return of resources to the production cycle. Copper is a material that can be melted an infinite number of times without losing its properties, which makes it a valuable resource for the economy.
Frequently asked questions (FAQ)
Exactly how much copper is in a compressor from an Atlant refrigerator?
In brand compressors Atlant (made in Belarus), which are considered one of the most reliable and heaviest, the copper content can reach 1.5–2.0 kg. This depends on the specific engine series, but on average they are richer in non-ferrous metals than many Chinese analogues.
Is it possible to hand over the entire compressor without disassembling it?
Yes, many collection points accept assembled compressors, but the price per kilogram will be much lower, since the receiver will have to disassemble and dispose of the oil yourself. You will lose from 30% to 50% of potential profit.
Is there aluminum in the compressor?
There should be no aluminum inside the engine itself (in the windings), there should be only copper. However, the heat exchangers (condenser and evaporator) in modern refrigerators are often made of aluminum or steel rather than copper. The tubes coming from the compressor are usually copper.
Is it dangerous to open the compressor yourself?
Yes, it is dangerous. There may be residual pressure, freon vapor and flammable oil inside. In addition, when cutting with a grinder, sparking occurs. Skills in working with the tool and compliance with safety precautions are required.
How to distinguish a copper winding from an aluminum one?
You need to make a small file or knife to strip the wire. If the metal inside is yellow-red, it is copper. If it is white or silver, it is aluminum or copper-plated aluminum. Also, copper is much heavier than aluminum for the same volume.