In the composition of oxidized nickel ores, nickel is found in the form of hydrated silicate minerals with a complex composition, which is usually expressed by the formula ...

Experiments on segregation roasting of pyrrhotite cakes in a laboratory tubular rotary kiln of periodic action showed the promising of this method for processing of the considered type of raw materials, so the research was continued on an enlarged laboratory scale ...

The mechanism of converter slag depletion includes the process of enlargement and sedimentation of matte droplets, the efficiency of which depends on the extraction of valuable components ...

The main directions of technical progress in non-ferrous metallurgy, stipulated by the Directives of the XXIV Congress of the CPSU on the ninth five-year plan for the development of the national economy of the USSR, are: increasing the extraction of metals from ores, improving the comprehensiveness of the use of raw materials, widespread introduction of closed technological schemes with full processing of semi-products.

Despite significant advances achieved in the development of methods for selective chlorination and chloride distillation of materials containing nickel, cobalt and copper, iron chlorides remain an indispensable component of both the gas phase and condensate. This indicates the possibility of interaction of chlorine iron gas with oxides of non-ferrous metals in the chlorination zone and with oxygen in the condensation system. As a result of the latter process, iron is converted from gaseous chloride to solid oxide, which improves the selectivity of the condensate, and the released chlorine can be returned to the chloride distillation process.. The present work is devoted to the study of some patterns of these processes.

One of the most important tasks of beneficiators and metallurgists is to find better methods of complex utilization of polymetallic ores: lead-copper-zinc and copper-zinc ores containing, in addition to base metals Si, Pb, Zn, a number of other satellite metals - Au, Ag, V, Cd, Se, Te, Sn, Tl, Ge, In, Ni, Co, As, Sb, Hg and others. The value of base metals, including noble metals, contained in the ores is often no more than 50-70% of the value of all metals in the ores.Conventional methods of enrichment of most polymetallic ores do not provide rich and pure selective concentrates with sufficiently high recovery of the corresponding metals of the same name. The recovery of lead in lead concentrate is 75-88%, zinc in zinc concentrate 78-85%, copper in copper concentrate 68-78%.

Pyrite concentrates obtained from the beneficiation of many polymetallic ores usually contain, in addition to iron and sulfur, small amounts of cobalt, copper, zinc, lead, nickel and other metals. When using these concentrates for the production of sulfuric acid extracts the bulk of sulfur, and the resulting cinders are on the content of iron in them are industrial ore. In view of the low content of non-ferrous metals, the usual methods and schemes used in obtaining these metals from rich ores cannot be used for their extraction.

In order to improve the process of chloride distillation of pyrite concentrate cinders the behavior of cobalt, copper, zinc and iron in this process was studied. The studies were carried out on an enlarged laboratory unit with the necessary changes in the process: and additions in the scheme. [1] See A. K. Orlov, I. N. Piskunov. “On the regularities of the process of chloride distillation of cobalt from pyrite concentrate cinders” in this volume.