The separation of metallic zinc from its ores by pyrometallurgy is much more difficult than with other common metals, such as copper, lead, and iron, because the reduction of zinc oxide by carbon (C) proceeds spontaneously only above the zinc boiling point of 907 C (1,665 F).
manufacturing process comprising all production steps, resources as well as all input and output relations of the whole process from the creation of the production order until the finishing of the product in order to optimize the overall manufacturing process in an integrated manner.
The conventional pyrometallurgical primary lead production process consists of four steps sinter ing, smelting, drossing, and refining. A feedstock made up mainly of lead concentrate is fed into a sintering machine. Other raw materials may be added, including iron, silica, limestone flux, coke, soda, ash, pyrite, zinc, caustic, and particulates
Lead Production Statistics. As with all metals, there are two main production routes. Primary production from mined lead ore is of course the original source of all lead, but secondary production, where it is recovered from recycled products or from residues arising from the production process is of enormous importance.
Lead processing. Approximately 30 percent of all lead consumed is in the form of lead compounds, such as oxides, tetraethyl and tetramethyllead, lead chromates, sulfates, silicates, and carbonates, and organic compounds. These lead compounds have been used in paste mixtures in storage batteries, in cements, glasses, and ceramics,
Oct 11, 2013"Montana Mosaic The Rise and Fall of the Anaconda Copper Mining Company" (2006) Duration 1425. The Montana Experience Stories from Big Sky Country 25,035 views