Copper Recycling:
Copper is a reddish brown nonferrous mineral, which has been used for thousands of years around the world. Copper is closely related with silver and gold, with many properties common among these metals. Modern society has a number of applications for copper, ranging from coins to pigments, and demand for copper remains high, especially in industrialized nations. It is used as a heat conductor, an electrical conductor, as a building material and as a constituent of various metal alloys. Copper is commonly used in the electrical and plumbing trades. Copper is the third leading used metal after aluminum and iron. Copper usage is rapidly expanding as more and more products are containing computer and electronic components.
The entire economy of the copper and copper alloy industry is dependent on the economic recycling of any excess copper products. Good quality high conductivity copper can be recycled by simple melting and check analysis before casting, either to finished shape or for successive fabrication. Where copper has been contaminated and it is required to re-refine it, it is normally re melted and cast to anode shape so that it can be electrolytically refined.
Lead Recycling:
Lead is a highly toxic metal found in small amounts in the earth's crust. Because of its abundance, low cost, and physical properties, lead and lead compounds have been used in a wide variety of products including paint, ceramics, pipes, solders, gasoline, batteries, and cosmetics. Today, the most common sources of lead exposure in North America are lead-based paint in older homes, contaminated soil, household dust, drinking water, lead pipes, lead crystal, and pottery with lead finish. While extreme lead exposure can cause a variety of neurological disorders such as lack of muscular coordination, convulsions and coma, much lower lead levels have been associated with significant changes in mental behavior and development in young children. Lead needs to be disposed of properly and recycled when applicable.
Zinc Recycling:
Zinc plating of steel is the major application for zinc. Other applications for zinc are in batteries and in alloys. Zinc forms a large number of alloys, most commonly brass. It is used largely in the process of galvanizing iron, which consists in coating iron with a film of zinc. Today, over three quarters of the zinc available for recycling is recycled. Zinc is recycled at all stages of production and use and zinc is fully recycleable.
Precious Metal Recycling:
The best-known precious metals are gold and silver. While both have industrial uses, they are well known for their uses in art, jewellery and their use in currency. There is not much concern over these precious metals getting discarded due to their high monetary value. Gold from coins, jewelery, and even some computer parts, often are brought into places that buy gold so it can be recycled. Silver, athough not as valuable as gold is often found in coins, jewelery, eating utensils and other household items. It is common to recycle silver as well. Many companies purchase other precious metals such as platinum, palladium, iridium, rhodium, tantalum, indium, germanium and osmium. The precious metal industry is a big business in many parts of the world
Scrap Metal Recycling:
Scrap metal is a term used to describe recyclable materials left over from every manner of product consumption, such as parts of vehicles, building supplies, and surplus materials. Scrap metal is often found from old stoves and home appliances as well.Often confused with waste, scrap often has monetary value. Practically anything made of metal is worth something to a scrap metal dealer. Some things however are getting hard to get rid of though. Scrap is often taken to a scrapyard, wrecking yard or a junkyard, where it is processed for later melting into new products. A wrecking yard, depending on its location, may allow customers to browse their lot and purchase items before they are sent to the smelters although many scrap yards that deal in large quantities of scrap usually sell entire units such as engines or machinery by weight with no regard to their functional condition. Customers are normally required to supply all of their own tools and labor to extract parts in scrapyards. Many scrapyards also sell bulk metals by weight, often at prices substantially lower than the retail purchasing costs of similar pieces. Processing aluminum, brass, copper, steel and cast iron metal scrap into usable items has many benefits.
The cost of metals, such as copper and aluminum, has risen, but demand for recycled materials is still strong, because it costs more to drill, mine and process them. The scrap-metal recycling industry is ready to obtain the benefits of people searching for extra income. In the United States alone, scrap-metal recycling is $65-billion industry and employees about 50,000 people and recycles 150 million tons of scrap materials annually.
Recycling of metals is a great idea. The unfortunate fact is that unless there are clear economic gains from recycling metal, large-scale initiatives are unlikely to become popular. To be economically viable, the energy saved by recycling needs to be significantly larger than the energy needed to produce the metals from ores. We need to do everything we can to recycle metal. There is limited amount of new metal available and the more we strip our planet of these resources the scarcer some metals will become.
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