Санкт-Петербургский горный университет императрицы Екатерины II, Санкт-Петербург, РФ

Александрова Т. Н., зав. кафедрой, д-р техн. наук, член-кор. РАН, профессор, Aleksandrova_TN@pers.spmi.ru

Люблянова В. А., аспирант, lyublyanova.spb.lera@yandex.ru

Представлены результаты исследования возможности повышения извлечения меди в процессах химического обогащения медных руд на примере медных минералов — азурита, малахита, халькопирита и хризоколлы. Проведена оценка термодинамической вероятности протекания реакций выщелачивания рассматриваемых минералов, позволившая обосновать возможность применения нагрева для интенсификации процесса. Проанализировано влияние окислителей на извлечение меди. Показано, что применение энергетических воздействий, таких как СВЧ и ультразвуковое, позволяет повысить скорость выщелачивания и сократить время протекания реакции. Исследование влияния СВЧ излучения позволило установить, что наибольший эффект достигается при извлечении меди из халькопирита, что может быть объяснено разрушением образующегося пассивирующего слоя и высокой скоростью нагрева. Наибольший прирост извлечения при ультразвуковом излучении отмечен для хризоколлы и халькопирита, что связанно с механическим разрушением пассивирующих слоев, соответственно, диоксида кремния и серы, образующихся в ходе выщелачивания.

Работа выполнена в рамках государственного задания Министерства науки и высшего образования Российской Федерации «Исследование термодинамических процессов Земли с позиции генезиса углеводородов на больших глубинах» FSRW – 2024 – 0008.

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