Национальный исследовательский технологический университет «МИСиС», Москва, Россия:

Игнаткина В. А., профессор, woda@mail.ru

Приведен аналитический обзор исследований по разработке селективных сульфгидрильных собирателей и использования их в реагентных режимах флотации тонковкрапленных сульфидных руд. Показано, что наиболее рациональным приемом повышения контрастности флотируемости сульфидов цветных металлов и сульфидов железа является использование сочетания сильного и слабого собирателей. Для медьсодержащих колчеданных руд наилучшие показатели флотации достигаются с использованием бутилового ксантогената (сильного собирателя) с диизоалкилдитио фосфатами; сочетания тионокарбаматов и дитиофосфатов. Промышленные испытания реагентного режима с М-ТФ (смесь дитиофосфата и тионокарбамата с преобладанием последнего) и во флотации медно-цинковой руды с повышенным содержанием пирротина (45,8–52,8 %) продемонстрировали более высокие технологические показатели по сравнению с бутиловым ксантогенатом при его большем расходе — извлечение меди на уровне 84 % при ее содержании в медном концентрате порядка 19 %. Прирост извлечения минералов меди происходит за счет снижения потерь сульфидов меди с отвальными хвостами и цинковым концентратом. На полиметаллической руде использование сульфгидрильных собирателей на основе тионокарбаматов, дитиофосфатов (М-ТФ, ТС 1000, ТС 2000, Аэро 9863, дибутиловый дитиофосфат) позволило применить частично коллективно-селективную схему флотации, повысить содержание сульфидов цветных металлов и их извлечение в селективные концентраты: содержание меди в медном концентрате — более 21 % при извлечении порядка 80 %; свинца в свинцовом концентрате — более 52 % при извлечении более 75 %; цинка — порядка 52 % при извлечении ~87 %.

В технологических исследованиях принимали участие проф., докт. техн. наук В. А. Бочаров, канд. техн. наук Л. С. Хачатрян, магистры и аспиранты кафедры ОР ЦиРМ НИТУ «МИСиС»; исследователи НИЛ ОФ.
Исследование выполнено за счет гранта Российского научного фонда (проект № 14-17-00393).

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