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A metallurgical furnace, often simply referred to as a furnace when the context is known, is an industrial furnace used to heat, melt, or otherwise process metals. Furnaces have been a central piece of equipment throughout the history of metallurgy ; processing metals with heat is even its own engineering specialty known as pyrometallurgy .
In March 2017, Juan P. Granda a former employee of NTR Metals, Miami was charged with buying gold from illegal mines in Peru. [1] In January 2018; Samer H. Barrage, Renato J. Rodriguez, and Juan P. Granda; three former employees of the now-defunct Florida-based NTR Metals Miami, were jailed for six years after they pleaded guilty to money ...
16th century cupellation furnaces (per Agricola). Cupellation is a refining process in metallurgy in which ores or alloyed metals are treated under very high temperatures and subjected to controlled operations to separate noble metals, like gold and silver, from base metals, like lead, copper, zinc, arsenic, antimony, or bismuth, present in the ore.
Electric phosphate smelting furnace in a TVA chemical plant (1942) Smelting is a process of applying heat and a chemical reducing agent to an ore to extract a desired base metal product. [1] It is a form of extractive metallurgy that is used to obtain many metals such as iron, copper, silver, tin, lead and zinc.
A charcoal furnace operating 1755–1812, [2] belonging to Kendall & Co., owners of Duddon furnace in Cumbria and other ironworks, using iron ore from Cumbria and local charcoal. The furnace building stands beside the road in the village of Furnace and can be viewed from the road: no public access.
The existing electric furnace was converted from smelting duties to a slag cleaning furnace and providing matte surge capacity for the converters. [8] The ISASMELT furnace was commissioned on 11 June 1992 and in 2002 treated over 700,000 t/y of concentrate. [39] The modernisation of the Miami smelter cost an estimated US$95 million. [27]
The Texas City tin smelter is a former metallurgical plant in Texas City and La Marque, United States.It was created in 1942, during the Second World War, to secure the American production of tin from imported ores.
With the introduction of strict new environmental regulations in the state of Utah, the smelter's maximum permissible sulfur emission was decreased to 1,082 short tons (982 t) per year from the earlier 18,574 short tons (16,850 t). In 1995 a new, cleaner flash smelting furnace was commissioned.