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公开(公告)号：EP2938749B1
公开(公告)日：2019-02-06
申请号：EP13870246.9
申请日：2013-12-30
申请人： Outotec (Finland) Oy
发明人： O'CALLAGHAN, John
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公开(公告)号：EP2938749A1
公开(公告)日：2015-11-04
申请号：EP13870246.9
申请日：2013-12-30
申请人： Outotec (Finland) Oy
发明人： O'CALLAGHAN, John
摘要： The present invention relates to a method and an arrangement for pressure and temperature let down of autoclave discharge slurry (106), in particular in pressure oxidation or high pressure acid leach of metal containing ore. The method of the invention comprises a step of providing autoclave vent gas (105) obtained from the autoclave (1) to the top-entry flash vessel (2) for inducing overpressure to the said top-entry flash vessel and preventing boiling of the slurry during the transfer to next top-entry flash vessel (3). The invention further relates to an autoclave and pressure let-down arrangement adapted for providing autoclave vent gas to one or more top-entry flash vessels.
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公开(公告)号：EP2935636B1
公开(公告)日：2018-11-21
申请号：EP13865273.0
申请日：2013-12-20
申请人： Outotec (Finland) Oy
IPC分类号： C22B3/02 , B01J3/04 , C02F1/06 , B01D3/00 , B01D3/10 , B01D5/00 , C22B3/04 , F27D17/00 , C02F103/16
CPC分类号： C22B3/04 , B01D3/007 , B01D3/10 , B01D5/0027 , B01J3/04 , C02F1/06 , C02F2103/16 , C02F2301/046 , C02F2301/066 , C02F2301/08 , C02F2303/10 , C22B3/02 , F27D17/001 , F27D17/004 , Y02P70/34 , Y02W10/30
摘要： The invention relates to a method of recovering energy and water from pressure oxidation flash steam comprising a step wherein a first flash steam directly obtained from a flash vessel is contacted with a first recirculating condensate having a first low condensate temperature to con-dense at least part of the water vapour comprised in the said first dirty flash steam on the first recirculating condensate and simultaneously to heat the said first recirculating condensate to obtain a first recirculating condensate having a first high condensate temperature and a first vent steam. The invention further relates to a pressure oxidation arrangement adapted for recovering energy from pressure oxidation flash steam and to a use of high temperature condensate and to a use of a direct contact condenser for recovery of energy and water from a pressure oxidation flash steam.
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公开(公告)号：EP3368700A1
公开(公告)日：2018-09-05
申请号：EP16797588.7
申请日：2016-10-27
申请人： Outotec (Finland) Oy
CPC分类号： C22B11/04 , C22B3/24 , Y02P10/234
摘要： The present invention provides a method of recovering gold, and optionally silver, from gold-bearing, and optionally silver-bearing, double refractory raw material, comprising the steps of (a) leaching the said gold-bearing, and optionally silver-bearing, double refractory raw material in a chloride containing leaching solution to dissolve gold and to obtain a leach solution comprising gold, and optionally silver, in solution, whereby the redox of leaching solution in the chloride leaching step is above 550 mV vs. Ag/AgCl; and simultaneously contacting the said leach solution comprising gold, and optionally silver, in solution with a re-sorptive material to obtain a gold-containing, and optionally silver-containing, re-sorptive material; and (b) recovering gold and optionally silver from the said gold-containing, and optionally silver- containing, re-sorptive material.
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5.发明公开METHOD AND ARRANGEMENT FOR REDUCING AUTOFLASH AND SLURRY CARRYOVER IN AUTOCLAVE FLASH SYSTEMS 审中-公开方法和系统用于减少自动闪光和AUFSCHLÄMMUNGSVERSCHLEPPUNG高压釜FLASH系统
公开(公告)号：EP2954077A1
公开(公告)日：2015-12-16
申请号：EP14749031.2
申请日：2014-02-07
申请人： Outotec (Finland) Oy
发明人： O'CALLAGHAN, John
CPC分类号： B01J3/04 , B01J3/02 , B01J2208/00362 , C22B3/02 , C22B3/04 , Y02P10/234
摘要： The present invention relates to a method and an arrangement for pressure and temperature let down of autoclave discharge slurry, in particular in pressure oxidation or high pressure acid leach of metal containing ore. The method of the invention comprises a step of precooling the autoclave discharge slurry by contacting the autoclave discharge slurry with a cooling fluid for reducing the temperature of the autoclave discharge slurry prior to its entry into the first flash stage. The invention further relates to an autoclave (1) and pressure let-down arrangement adapted for providing cooling fluid to the autoclave discharge slurry prior its entry into the first flash vessel (2).
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公开(公告)号：EP2935636A1
公开(公告)日：2015-10-28
申请号：EP13865273.0
申请日：2013-12-20
申请人： Outotec (Finland) Oy
CPC分类号： C22B3/04 , B01D3/007 , B01D3/10 , B01D5/0027 , B01J3/04 , C02F1/06 , C02F2103/16 , C02F2301/046 , C02F2301/066 , C02F2301/08 , C02F2303/10 , C22B3/02 , F27D17/001 , F27D17/004 , Y02P70/34 , Y02W10/30
摘要： The invention relates to a method of recovering energy and water from pressure oxidation flash steam comprising a step wherein a first flash steam directly obtained from a flash vessel is contacted with a first recirculating condensate having a first low condensate temperature to con-dense at least part of the water vapour comprised in the said first dirty flash steam on the first recirculating condensate and simultaneously to heat the said first recirculating condensate to obtain a first recirculating condensate having a first high condensate temperature and a first vent steam. The invention further relates to a pressure oxidation arrangement adapted for recovering energy from pressure oxidation flash steam and to a use of high temperature condensate and to a use of a direct contact condenser for recovery of energy and water from a pressure oxidation flash steam.
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