Verkh-Neyvinsky (Sverdlovsk region)
In the branch "Production of non-ferrous metal alloys" JSC "Uralelectromed" (an enterprise of the metallurgical complex of UMMC) introduced a new technology that allows you to return antimony from raw materials to the technological cycle of lead production .
Lead raw materials of the branch enter the smelting furnaces of the metallurgical shop, where as a result of melting, rough lead is obtained. Such lead contains copper, tin, antimony, bismuth and must be purified from these impurities in refining boilers, where antimony is released selectively into antimony oxides. The resulting oxides are subjected to reduction melting. Lead is recovered and returned to the technological cycle of lead production, and antimony is taken out into antimony concentrate, which is sent to the chemical and metallurgical workshop (CMC) of the main site.
From the obtained concentrate, CMC specialists produce Cy-1 metal antimony. The bulk of the obtained antimony is sold to consumers, and a small part is returned to the PSCM to re-enter the production of lead, but not as an impurity, but as a reagent.
- During the production of lead for its purification from bismuth, along with other reagents pure antimony is also used. Previously, it was purchased on the side. Now, thanks to the opening of a new production site in Verkhnyaya Pyshma, it is possible to use antimony of our own production. At present, the branch has already completely abandoned the purchase of antimony and receives it only from the KhMTs. The demand for branded antimony by PSCM is not very large - about two tons per year. But it is still cheaper to extract it from raw materials than to buy it on the side, - said the head of the production and technical department - chief metallurgist of PSTSM Alexey Timashov.