Селективное щелочное выщелачивание меди из хвостов медной флотации с использованием глутамата натрия
DOI:
https://doi.org/10.18321/cpc24(3)397-406Ключевые слова:
хвосты флотации, глутамат натрия, щелочное выщелачивание, извлечение меди, халькопирит, селективное растворение, модель сжимающегося ядраАннотация
Впервые исследовано применение глутамата натрия в качестве комплексообразующего реагента для селективного щелочного выщелачивания меди из хвостов флотации порфировых медных руд, содержащих 0,33% Cu. Изучено влияние концентрации глутамата натрия, типа окислителя и температуры при pH 9,5. В оптимальных условиях (0,75 М глутамат натрия, 0,03 М KMnO4, 60 °C, 24 ч) извлечение меди достигло 78,6%, тогда как сорастворение железа составило 0,85%. Кинетический анализ показал смешанный режим контроля с кажущейся энергией активации 24,6 кДж·моль. Данные рентгенофазового анализа и СЭМ подтвердили селективное растворение халькопирита при сохранении пирита и минералов пустой породы.
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Copyright (c) 2026 Л.А. Мусапирова, А.Н. Баткал, К. Камунур, Т.Б. Осеров, О.А. Тюменцева
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