Manufacture and supply of ferroalloys and ligatures
pos. Vishnevogorsky
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The history of the company

The production of metals

Copper production

Methods of production of non-ferrous metals are very diverse. Many metals get pyrometallurgical way with the election a reducing or oxidizing melting. A number of metals get hydrometallurgical method to transfer them to soluble compounds and subsequent leaching. For some metals used metallothermic processes using as reducing agents produced metals other the metals with large affinity to oxygen. In this Chapter the methods of obtaining non-ferrous metals.For the production of copper used copper ore, and waste media its alloys. The ore contains 1 to 6% copper. Ore containing less than 0.5% of copper, not processed, as in the prior art extract from her copper is unprofitable.

Gangue ores consist of pyrite (FeS2), quartz (SiO2), various compounds containing Al2O3, MgO, CaO, and of iron oxides.

The ore sometimes contains significant amounts of other metals (zinc, gold, silver, and others).

There are two methods of obtaining copper from ore:

  1. hydrometallurgical;
  2. pyrometallurgical.

Hydrometallurgical not found its wide application due to the inability to extract simultaneously with the copper precious metals.

Pyrometallurgical method suitable for the processing of ore and include the following (figure 43):

  • preparation of ores for smelting;
  • smelting for matte;
  • converting the matte;
  • the refining of copper.

Preparation of ores for smelting

Ore preparation is to conduct enrichment and roasting. The enrichment of copper ores is carried out by flotation. In the result is copper concentrate containing 35% copper and 50% sulfur. Concentrates are usually roasted in furnaces fluidized bed to reduce the sulfur content to optimum values. When roasting oxidizes sulfur when the temperature of 750 – 800 °C, part of the sulphur is removed with the gases. The result is a product, called calcine.




Metal Density, kg/m3 Melting point, °C UD. resistance, Ohm-mm2/m
Aluminium 2700 660 0,027—0,030
Bronze 8800-8900 890-1050 0,02—0,05
Tungsten 18 000-19 300 3370-3400 0,053—0,055
Brass 8400-8700 900-960 0,03—0,08

Our Partners
VSW North niobium is focused in the metallurgical industry, electrode factories, powder manufacturers, as well as plants for the production of wire.
Vishnevogorsky Metallurgical Plant «SEVERNIY NIOBII»

VSW SEVERNIY NIOBII is focused in the metallurgical industry, electrode plants and factories for the production of wire.

On the production is carried out more than 150 career professionals, improved technology, and products undergo laboratory tests, which confirms its high quality. Perspective direction of development of our company - expanding the range of products according to customers' requirements.