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Lucy Group Ltd, formerly W. Lucy & Co. Ltd, is a privately owned international group headquartered in Oxford, England. [2] The company's origins date back more than 200 years when its principal business was manufacturing metal castings.
Open-pit mining is primarily utilized as the most efficient method of recovering this metal; the company's three largest such works are the Mission, Silver Bell, and the Ray mines in Arizona. The company had also operated in silver mining in Idaho. Its mines produce 350,000,000 to 400,000,000 pounds (160,000,000 to 180,000,000 kg) of copper a year.
The core business is the production of copper cathodes from copper concentrates, scrap, and recycled materials (copper refining). These include continuous cast wire rods, shaped rods, rolled products and strips, and specialty wire made of copper and copper alloys. Aurubis also processes precious metals.
Continuous casting, also called strand casting, is the process whereby molten metal is solidified into a "semifinished" billet, bloom, or slab for subsequent rolling in the finishing mills. Prior to the introduction of continuous casting in the 1950s, steel was poured into stationary molds to form ingots. Since then, "continuous casting" has ...
Plaster casting is an inexpensive alternative to other molding processes for complex parts due to the low cost of the plaster and its ability to produce near net shape castings. The biggest disadvantage is that it can only be used with low melting point non-ferrous materials, such as aluminium, copper, magnesium, and zinc. [6]
When this will occur is a matter of dispute. Unlike fossil fuels, copper is scrapped and reused, and it has been estimated that at least 80% of all copper ever mined is still available (having been repeatedly recycled). [55] Copper is among the most important industrial metals, ranking third after iron and aluminium in terms of quantity used. [56]