When you hire a scrap removal service or deliver your scrap in person to the local scrap yard, what happens to recycled metals next? We know many people are curious about this topic, so we will tell you all about that in this article.
What Happens to Recycled Metals?
The life cycle of metals is just beginning when you take them to be recycled. Here are some of the stops these metals make along their way.
Collection and Sorting
Your recycled metals will first be collected at the point of origin, whether a local scrap yard, a recycling center, or a specialized scrap pick-up service.
These collection points act as storage silos for different streams of metal waste scraped up from these common sources:
Homes
Old or broken appliances and electronic devices are often recycled for scrap:
Here are a few common items you’ll see at scrap yards:
- Fridges
- Metal furniture
- Washing machines
- Vacuum cleaners
- Aluminum cans
- Copper wires
- Steel kitchenware
Industrial Waste
Factories and manufacturing units that produce various metals always produce metal scrap as a byproduct. This scrap is unused metal sheets, rods, or no longer needed parts.
Construction and Demolition
Metal is used extensively in construction, and when buildings are demolished, vast amounts of recyclable metal, such as steel beams, pipes, and rebar, become available.
After its collection, the first step is sorting.
Sorting metals is important because it ensures each type of metal is processed properly. This is where initial sorting comes in. Metals are sorted according to their type and quality:
- Ferrous metals are made of iron and magnetic material. Steel and cast iron are two examples. Ferrous metals are widely used in construction materials, tools, and other manufacturing materials because of their strong holding capacity.
- Non-ferrous metals do not contain iron and are non-magnetic. Some examples include aluminum, copper, brass, and stainless steel. They are particularly corrosion-resistant and are used in electrical applications.
Once sorted, these metals are transported to dedicated recycling centers.
Transportation is designed for minimal environmental impact and safety. It may involve special containers and trucks for heavy, possibly hazardous materials.
Processing at the Recycling Facility
The metals are further processed at the recycling center before being made ready for recycling.
First, the metals are shredded and crushed.
It also makes it easier to cut up and handle and increases the total surface area, which allows it to melt more quickly later.
After shredding, the metals undergo magnetic separation. This is necessary to separate ferrous and non-ferrous materials.
The ferrous metals are attracted to the magnets pulled out of the mix, marked, and placed in their respective categories.
Some high-tech techniques, such as eddy current separators (ECS), can be used on non-ferrous metals that a magnet cannot separate.
This device creates a small electrical charge that repels non-ferrous metals, allowing them to be separated from other materials.
Sensor-based sorting technology could also use optical sensors to sort metals according to their specific properties, such as color or conductivity.
Melting and Purification
Now, the metals are separated and reduced into smaller chunks. They are ready for melting.
The melting point and melting method of each metal are as follows:
Steel and iron are melted in electric arc furnaces, reaching temperatures of more than 3,300°F. Steel is frequently recycled in large quantities because it is widely used in construction and manufacturing.
Non-ferrous metals such as aluminum melt at a much lower temperature—about 1,220°F—usually in larger rotary furnaces. Aluminum is lightweight, highly conductive, and one of the most commonly recycled metals.
Copper is an excellent electrical conductor. It melts between 1,675-1,981°F and can be recycled economically to manufacture new electrical components.
When melting, metal purification processes are applied to ensure the metal is ready to be reused. A common process is electrolysis, which involves passing an electric current through the molten metal to separate the impurities.
Other approaches involve adding flux materials that react with contaminants, allowing them to be skimmed off the surface. Purification is crucial to manufacturing high-quality recycled metal.
Forming and Casting New Metal Products from Recycled Metals
After purifying the metal, it is ready to be poured into molds—a process known as forming and casting.
To form and cast, the molten metal is poured into molds that are shaped to allow it to harden into ingots, bars, or sheets.
Each shape and size is standardized, allowing manufacturers to transport the metal for further processing.
Ingots and Bars: These are usually made from molten metal. They’re easy to store and ship and can be melted down and re-poured into other shapes when the timing is right.
Sheets and Plates: Some metals are melted and poured into molds to form sheets or plates, which can be used in the construction or automotive industry.
Occasionally, the melts are alloyed with other metals to enhance their properties and usefulness, a practice that dates back to ancient times.
For example, adding chromium to steel yields stainless steel, which is highly resistant to rust and corrosion and ideal for kitchen appliances and medical equipment.
After the molding, it cools and solidifies, often in special conditions that ensure the desired properties of the metal.
The solidified metal is then sent to manufacturing plants, where it is formed into finished products.
Manufacturing New Products
Recycled metals are widely used in new products.
Here are a few common uses for recycled metals in new products:
Automotive Industry
Most car bodies and parts are made of recycled steel and aluminum, which helps car manufacturers cut costs and meet their energy-efficiency goals.
Construction Materials
Recycled metal from demolished buildings can be used to build new buildings. Producing new steel consumes energy and releases pollutants, so using recycled steel in new buildings reduces the demand for new steel.
Consumer Goods
Many home appliances you use daily, such as refrigerators, washing machines, and air conditioners, are made with recycled metals. Canned food and beverages are also made from recycled metal products.
Electronics
Electronic items are often made with non-ferrous metals.
Recycled metals are a linchpin of the tech industry, which depends on recovered metal to produce the myriad components of smartphones, computers, tablets, and other gadgets.
For all of these products, quality assurance is an important step in the manufacturing process.
Recycled metals must satisfy several requirements before they can be used to make new products. It is important that the metals perform as well as new ones.
Therefore, they are checked for strength, durability, and purity.
Environmental and Economic Benefits
Recycling metals offers significant benefits for both the environment and the economy.
One of the leading environmental advantages is resource conservation. Recycling metals reduces the amount of new raw materials we need to extract from the earth.
Mining natural resources also harms the environment, leading to habitat destruction, deforestation, and soil erosion. Water pollution is also a common issue with mining.
Overall, recycling is better for the environment, conserving these natural resources and preventing ecosystem destruction.
Energy Savings
The environmental benefits are also incredibly important. Recycling metals takes much less energy than producing them from raw ore or ‘primary’ metals.
Recycling aluminum takes up to 95% less energy than producing new aluminum from bauxite ore. These energy savings translate into reduced greenhouse gas emissions, which helps mitigate the climate change crisis.
Economic Advantages
From an economic perspective, recycling provides employment. Workers must sort and process materials in recycling facilities and transport them.
Manufacturers can also save money using recycled metals, which are usually less expensive than new metals. These savings can translate into lower production costs and cheaper consumer goods.
The Role of Consumers and Businesses in Recycled Metals
Both consumers and businesses play an essential role in supporting the metal recycling process.
Consumer Participation
Citizens may have a large role to play by segregating and recycling metal wastes properly.
For example, they can recycle aluminum cans, obsolete electronic devices, and worn-out household appliances.
Businesses
Businesses can play a big part, too.
They can engage in activities such as establishing their own internal recycling system, procuring recycled material for production purposes, and encouraging employees to recycle and give back to the environment.
Community Programs
Community programs can also help improve recycling efforts.
Local authorities or organizations can collect the scrap metal from people’s homes or provide a center where people can hand over their recyclable metals.
Any efforts to make recycling easier and more convenient can encourage more community participation in recycling and increase recycling rates.
Recycling Your Scrap Metal
The long road a metal travels from the scrap bin to a new product is fascinating. It has many steps essential for making the world a greener place.
Each step—from collection and sorting to melting, purifying, and manufacturing—offers a chance to reduce waste and save resources and energy.
Knowing what happens to our recycled metals helps us better understand the importance and purpose of recycling in the first place.
So, the next time you need to get rid of scrap metal, remember that you are helping protect the environment, the economy, and future generations.
If you want to recycle scrap metal in Florida or book scrap removal services, contact Scrap Gators in Fort Pierce!
