УТИЛИЗАЦИЯ ХРОМСОДЕРЖАЩИХ СТОКОВ. ЧАСТЬ 1. СТРУКТУРА И СОСТАВ ОСАДКОВ ПРИ ВОССТАНОВЛЕНИИ ХРОМА(VI) ЖЕЛЕЗНОЙ СТРУЖКОЙ В СЕРНОКИСЛЫХ РАСТВОРАХ

Resultado de pesquisa: Article

Resumo

The range of СrO3 and H2SO4 for sulfuric acid aqueous solutions of chromium anhydride, within which formation of soluble crystalline powder sediment complex composition occurred due to oxidation-reduction reactions with participation of metallic iron, was obtained. Held X-ray analysis of sediment has allowed to carry him on the structure of the phase of hydroniumjarosite (H3O)Fe3(SO4)2(OH)6. Given the high chromium content in the sediments, concluded its phase composition as chromiferous hydroniumjarosite due to the inclusion of Cr3+ in the structure by ion-exchange replacement. According to the results of the microscopic studies and elemental analysis the heterogeneity of the microstructure and chemical composition of the sediment for iron, chromium, sulfur and oxygen was revealed. Thus by the end of the deposition process the concentration ratio of iron and chromium in microcrystalline formations is in rather narrow range of values 1.53-1.73.
Título traduzido da contribuiçãoDisposal of waste chromium. Part 1. The structure and composition of precipitation during recovery of chromium(VI) iron shavings in sulfuric acid solutions
Idioma originalRussian
Páginas (de-até)10-17
RevistaБутлеровские сообщения
Volume37
Número de emissão2
Estado da publicaçãoPublished - 2014

GRNTI

  • 61.31.00

Level of Research Output

  • VAK List

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