Why do we recycle second -hand metals?
Metals are valuable materials that can be recycled again and again without losing their properties. Scrap metal has value. This causes people to collect it and send it to recycling operations for sale. In addition to a financial incentive, there is also an environmental imperative. Metal recycling enables us to preserve our natural resources while requiring less energy to produce new products using raw materials. Recycling leads to less emission of carbon dioxide and other harmful gases. Most importantly, it saves money and allows manufacturing businesses to reduce their production costs. Recycling also creates jobs.
Among the materials that are made with this type of steel is second-hand shed. This helps in the recycling of metals as well as the reuse of second-hand shed iron beams, which is both economical and helps the environment. Recycling scrap metals can be very beneficial for the environment, according to a Solex review of research conducted by the US Environmental Protection Agency. Using recyclable metal instead of raw iron ore can lead to the following results:
75% energy savings.
90% savings in raw materials used.
86% reduction in air pollution.
40% reduction in water consumption.
76% reduction in water pollution.
97% reduction of mining waste.
Second -hand metal and iron recycling process
The main stages of the metal recycling process are as follows:
⚫️ Collection of second -hand metals and iron
The metal collection process is different due to the higher scrap value compared to other materials. For this reason, more is sold in the second-hand iron and scrap market than sent to the landfill. The largest source of scrap metal in the United States is from scrap vehicles. Other sources include large steel structures, railroad tracks, ships, farm and household equipment. Instant scrap, which is created during the production of a new product, accounts for half of the iron scrap supply. In the case of second-hand sheds, this is done by the activists of the same industry. If the beams are healthy, they will be installed in the new place in the same way.
⚫️ Sort
Sorting involves separating metals from scrap metal mixed with other waste. In automated recycling operations, magnets and sensors are used to help separate materials. At the commercial level, paper markers may use magnets and also help determine the type of metal by observing the color and weight of the material. For example, aluminum will be silver and light. Other important colors to look for are copper (for copper), yellow (for brass) and red for red brass. Papers improve the value of their materials by separating clean metal from dirty materials.
⚫️ processing and crushing
Metals are crushed for further processing. Crushing is done for the melting process. Small crushed metals have a higher surface area to volume ratio. As a result, they can be melted using relatively less energy. Typically, aluminum is converted into small sheets and steel into steel blocks.
⚫️ Melt
Scrap metal is melted in a large furnace. Each metal is transferred to a special furnace that is designed to melt that specific metal. A significant amount of energy is used at this stage. However, as mentioned above, the energy required to melt and recycle metals is much less than the energy required to produce metals using raw materials. According to the size of the furnace, the amount of heat of the furnace and the volume of the metal, melting can take from a few minutes to a few hours.
⚫️ Second -hand iron treatment and scrap from pollutants
Purification is done to ensure the final product is of high quality and free from contaminants. One of the most common methods used for purification is electrolysis.
⚫️ Second -hand iron consolidation and scrap
After refining, the molten metals are transported by a conveyor belt to cool and strengthen the metals. At this stage, the scrap metals are made into special shapes such as rods, which can be easily used to produce various metal products.
⚫️ Shipment of metal bars
After cooling and stabilization, the metals are ready for use. They are transported to different factories, where they are used as raw materials for the production of new products. When the products made from these metal rods reach the end of their useful life, the metal recycling process continues again.
