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公开(公告)号：EP3362184A1
公开(公告)日：2018-08-22
申请号：EP16794367.9
申请日：2016-10-12
申请人： Outotec (Finland) Oy
发明人： MOILANEN, Jari , LEPPINEN, Jaakko
IPC分类号： B03D1/06 , B03D101/06 , B03D103/02
CPC分类号： B03D1/06 , B03D2201/06 , B03D2203/025
摘要： A process for recovery of gold from gold-containing raw materials includes obtaining gold-containing raw material having refractory gold-containing sulfidic minerals including a first type of refractory sulfidic mineral having high gold content and a second type of sulfidic mineral having low gold content; forming a mineral pulp including a first type of refractory sulfidic mineral particles having high gold content and second type of sulfidic mineral particles having low gold content by suspending ground gold-containing material in water and optionally further milling the material; conditioning the mineral pulp by addition of a surface modifying chemical to obtain a conditioned pulp; subjecting the conditioned pulp to a froth flotation process; recovering the non-floatable first type of refractory sulfidic mineral particles having high cold content as flotation tailings; pressure oxidizing (PDX) the flotation tailings to obtain a discharge slurry comprising liberated gold; and recovering gold from the discharge slurry.
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2.发明公开
公开(公告)号：EP3383544A1
公开(公告)日：2018-10-10
申请号：EP16822224.8
申请日：2016-11-30
申请人： Outotec (Finland) Oy
发明人： KAARTINEN, Jani , RANTALA, Ari , REMES, Antti , SUONTAKA, Ville , MOILANEN, Jari , SAVIRANTA, Pertti
摘要： The present invention relates to the field of mineral and metallurgical processes, to comminution processing or disintegrating in general and to comminution processing by crushers and tumbling mills, and more particularly to a method and an arrangement for controlling a comminution process having a grinding circuit. An arrangement for controlling a comminution process according to the present invention having a grinding circuit (8), (20), (31), which arrangement comprises an imaging system (22), (27) measuring 3D reconstruction measurement data (33) for three-dimensional reconstruction of incoming ore (9), (21); a particle size analysis equipment (28) measuring particle size data (34) for calculation of the particle size characteristic value (38) of outgoing ore (10), (32); an ore characteristics data calculation block (39), said ore characteristics data calculation block (39) receiving a particle size distribution profile (36) of incoming ore (9), (21) and a particle size characteristic value (38) of the outgoing ore (10), (32), the said particle size distribution profile (36) being calculated and/or reconstructed from the said 3D reconstruction measurement data (33) for three-dimensional reconstruction, and the said particle size characteristic value (38) being calculated based on the said measured particle size data (34), said ore characteristics data calculation block (39) calculating ore characteristics data (41) based on the said particle size distribution profile (36) and the said particle size characteristic value (38); and a control block (44), (51) controlling the grinding circuit (8), (20), (31) based on the said calculated ore characteristics data (41).
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