Evaluation of the Possibilities of Extraction Recovery of Salts from the Calcium Chloride Brines in the Krasnoyarsk Territory
V. I. Kuzmin1, G. L. Pashkov1, V. N. Kuzmina1, N. V. Gudkova1, D. V. Kuzmin1, S. N. Rasputin2
1 Institute of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences
2 Tagulskoye Ltd
kuzmin_vi@mail.ru
Keywords: extraction, chloride brines, bromine, lithium
Pages: 321-329
Abstract
Problems connected with processing of underground polycomponent brines of the Krasnoyarsk Territory are to a large extent due to the remoteness of deposits and the absence of developed infrastructure. The version involving direct extraction recovery of valuable elements in the form of salts is considered. It is shown that the highest salt concentrating degree may be achieved for extraction of calcium bromide and lithium chloride (by a factor of 20 and 40, respectively). A scheme of extraction recovery of calcium bromide with a mixture of tributylphosphate and molecular iodine is proposed. Problems of lithium chloride extraction are considered. For the example of extraction of lithium tetraphenylborate, LiFeCl4 and Li(ClI2) in the systems with tributylphosphate, it is established that the growth of steric hindrance for the formation of extracted complexes promotes the recovery of lithium from calcium chloride brines.
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