专利检索 ap:("Placer Dome Technical Services Limited") AND inv:"FERRON, Cesare Giosue" 第 1 页

1.

发明公开
REDUCTION OF LIME CONSUMPTION WHEN TREATING REFRACTORY GOLD ORES OR CONCENTRATES 审中-公开
标题翻译：降低石灰消耗金矿石中的难治性或金精矿的处理

公开(公告)号：EP1838883A1

公开(公告)日：2007-10-03

申请号：EP05820276.3

申请日：2005-12-12

申请人： Placer Dome Technical Services Limited

发明人： KING, James A. , JI, Jinxing , FLEMING, Christopher Andrew , FERRON, Cesare Giosue

IPC分类号： C22B3/08 , C22B11/00

CPC分类号： C22B3/08 , C22B3/44 , C22B11/04 , Y02P10/234

摘要： The present invention is directed to a precious metal recovery process in which basic ferric sulphates and/or jarosites are controlled by a number of mechanisms, including control of the oxidation reaction conditions in the first autoclave compartment, hot curing of the autoclave discharge slurry, and/or contacting of the autoclave feed slurry with the hot cured discharge liquid. Through curing, reactive iron-containing precipitate, such as basic iron sulphate, is allowed to react with acid to form a dissolved iron-containing species, such as ferric sulphate.