Перевод названия: Comparison of efficiency of Leachaid oxidants and oxygen, during the intensive cyanidation of the gravitational concentrate on the Acacia installation
Тип публикации: статья из журнала
Год издания: 2012
Ключевые слова: Leachaid, Acacia, электроэкстракция, "Acacia" Reactor, electro lysis, intensive cyanidation, gravity concentrate, oxygen, ceramic dispersant, интенсивное цианирование, гравитационный концентрат, кислород, керамический диспергатор
Аннотация: Исследована возможность замены окислителя Leachaid, используемого в процессе интенсивного цианирования золотосодержащих концентратов на установке Acacia, на газообразный кислород. На основании результатов лабораторных исследований установлено, что такая замена позволяет повысить извлечение золота из концентрата с 75–87 до 95–98 % иПоказать полностьюснизить продолжительность интенсивного цианирования более чем в 2 раза. Проведение промышленных испытаний на установке Acacia полностью подтвердило полученные ранее результаты лабораторных экспериментов. Использование сжатого кислорода внедрено на одной из фабрик ЗАО «Полюс». Nowadays in world practice it is used such types of equipment as “Gekko InLine Leach Reactor” and “Acacia” reactor for intensive cyanidation of gold-bearing gravity concentrates. Producers of “Acacia” Reactor recommend using special organic addition Leachaid, which is also called “leaching accelerator”. It works as an oxidizer for gold and other components that present in the concentrate. Some disadvantages of using Leachaid were revealed, such as strict dosage necessity, too long time of gold recovery, complication of concentrates treatment, which contain high sulfide quantity and iron scrap, increasing electrolysis time because of formation in pregnant solutions products of Leachaid decomposition and in the end its high price. The opportunity of substitute oxidizer Leachaid, which is used in intensive cyanidation process of gold-bearing concentrates in “Acacia” reactor, on more effective oxygen was investigated. Laboratorial experiments on the apparatus, which completely simulates “Acacia” Reactor technology, were made. Subsequently investigations were removed in industrial conditions with adjustment of technological characteristics of intensive cyanidation process. For the reason of laboratorial investigations results it was established that substitute of organic reagent Leachaid on gaseous oxygen allowed to increase gold recovery from concentrate from 75–87 to 95–98% and to reduce time of intensive cyanidation more than twice. Also it makes it possible to significantly raise the electrolysis productivity. Industrial trials on “Acacia” Reactor completely confirmed results of laboratorial experiments that were received earlier. In the issue of good results of laboratorial and industrial tests employment of high-pressure oxygen instead of Leachaid in intensive cyanidation process was implemented at one of the factories of “PolyusGold” company.
Журнал: Цветные металлы
Выпуск журнала: № 11
Номера страниц: 59-62
ISSN журнала: 03722929
Место издания: Москва
Издатель: Закрытое акционерное общество "Издательский дом "Руда и металлы"