According to the results of X-ray and miner-alogical analysis methods this ore contains the following minerals: cobaltite, erythrite, clino-Ĭhlore, andradite, a-quartz, hematite, aluminum phosphide. The studied cobalt ore of Dashkesan deposit is polymineral ore. The aim of current work is maximum extraction of cobalt from high-silica-containing Dashkesan deposite ore by using acidic methods (hydrochloric and sulfuric acid), also by sintering-acidic methods. In the acidic methods of processing low-quality aluminum ores they usually use sulfuric and hydrochloric acids, which permit relatively easy to carry out a selective separation of silica and alumina already on the stage of acidic ore processing. Currently processing Dashkesan cobalt ores is not carried out in Azerbaijan.įor the processing of high-silica aluminum ores containing cobalt, appropriate to use acid methods, as these methods allow to selectively allocate silica contained ores already at the acid processing stage, which is a kind of chemical enrichment process of cobalt. Basically, they are cobaltite (CoAsS), safflorite (Co,Fe,Ni)As2, glaucodot (Co,Fe)AsS, skutteru-dite CoAs3.Ĭobaltite is the main ore mineral of sul-foarsenic complex and the main cobalt mineral of deposit of Dashkesan ore district. G.Kh.Efendiev and M.A.Kashkai have installed characteristics of cobalt sulphoarsenic minerals for all Dashkesan metallogenic region. Dashkesen district is not only abundant with its iron ores but also with its cobalt and alunite ores. ĭashkesan is the most important mining district in Azerbaijan. But unoxidized ores (sulfides or arsenic ores), especially complex ones have industrial uses even at the concentration of cobalt 0.15% and less than it, as they enter to the enrichment process. Ores from which cobalt is extracted, are very diverse in their chemical and mineralogical composition, the cobalt content in them varies widely - from tenths of a percent to a few percentages. It often forms a compound with an impurity of iron, copper, manganese, lead and some other metals. On 28 January 2016 the price of cobalt on the world market, according to the data,, was about 22 $/kg.īasically, minerals of cobalt are sulfides, arsenides and silicates. The daily human need for cobalt is 0.007-0.015 mg. Cobalt is one of the vital microelements for organism. ![]() Radioactive cobalt (Co60) is used in gamma-detection and in medicine. To produce permanent magnets cobalt is used as high-performance positive electrode for the production of lithium batteries. From cobalt-containing alloys different tools - drill bits, cutters, etc are produced. ![]() Alloying steel with cobalt increases its heat resistance and improves mechanical properties. Keywords: Cobalt, ore, sulphatizing roasting, leaching, sintering, extraction.Ĭobalt and its compounds are widely used in various industries: metallurgical, chemical, radio-electronic. It was observed that extraction of cobalt by sulfatization at 7000C made up 85.52%. The method of processing ore that provides for its sulfatizing roasting with further leaching with water is suggested. It was shown that due to the presence of hard soluble minerals and silica compounds of cobalt in the composition of ore leaching of Co with solutions of hydrochloric acid (7 and 20%) and sulfuric acid (up to 2 N) is insufficiently effective. The composition of cobalt ore was studied. ![]() In the article the results of studying the process of extracting cobalt out of Dashkesan high-siliceous cobalt ores are cited. M.Nagiev Institute of Catalysis and Inorganic Chemistry NAS of ru Received RESEARCH OF LEACHING CONDITIONS OF COBALT FROM HIGH-SILICA CONTAINED COBALT ORES WITH MINERAL ACIDS
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