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公开(公告)号：US09410226B2
公开(公告)日：2016-08-09
申请号：US14237593
申请日：2012-11-01
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Hiroyuki Mitsui , Keisuke Shibayama , Hirofumi Shoji , Tatsuya Higaki , Yoji Kyoda , Osamu Nakai
CPC classification number: C22B23/0407 , B02C19/00 , C22B1/00 , C22B23/005
Abstract: Disclosed is a method for producing an ore slurry that can suppress a rise in the viscosity of the ore slurry and consequently prevent a failure in transporting the slurry, and also to provide a metal refining method utilizing such a slurry producing method. The present invention includes: a pulverizing/classifying step of pulverizing raw material ores and classifying the resulting ores at a predetermined classifying point so that oversized ore particles are removed so as to obtain a coarse ore slurry composed of undersized ore particles; a grain size measuring step of measuring the grain size of the resulting coarse ore slurry; and an ore slurry condensing step of loading the coarse ore slurry to a solid-liquid separation device and separating and removing moisture contained in the coarse ore slurry therefrom so as to condense ore components.
Abstract translation: 公开了一种能够抑制矿浆的粘度上升的矿石浆料的制造方法，防止了浆料的输送失败，并且提供了利用这种浆料生产方法的金属精炼方法。 本发明包括：粉碎/分级步骤，将原料矿石粉碎并在预定分级点对所得矿石进行分级，以便除去过大的矿石颗粒，以获得由过小的矿石颗粒组成的粗矿浆料; 测定所得粗矿浆料的粒径的粒度测定工序; 以及将粗矿石浆料装载到固液分离装置并从其中分离除去粗矿浆中含有的水分，以使矿石成分浓缩的矿浆冷凝工序。
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公开(公告)号：US10442715B2
公开(公告)日：2019-10-15
申请号：US15542485
申请日：2015-09-15
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Hiroyuki Mitsui , Osamu Nakai , Keisuke Shibayama , Sho Shirai
Abstract: The present invention provides a chromium-containing water treatment method that allows treatment of water that contains chromium (chromium-containing water) at low cost. A chromium-containing water treatment method according to the present invention comprises: a reduction step in which chromium-containing water 11 and a liquid 12 containing 5-50 ppm of hydrogen sulfide are mixed, and the mixture is adjusted to pH 3.5 or lower and ORP 200-400 mV by adding an acid 13 thereto, so as to reduce chromium contained in the water; and a precipitation separation step in which a neutralizing agent is added to a solution 11′ obtained via the reduction step so as to adjust the solution 11′ to pH 8-9, thereby precipitating and separating, as a hydroxide, the reduced chromium contained in the solution.
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3.发明申请METHOD FOR SHORTENING OPERATION SHUTDOWN TIME OF HIGH PRESSURE ACID LEACH EQUIPMENT IN A HYDROMETALLURGICAL PROCESS 审中-公开高压酸洗设备在水力学过程中的操作切断时间的方法公开(公告)号：US20140048987A1
公开(公告)日：2014-02-20
申请号：US14063403
申请日：2013-10-25
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Keisuke Shibayama , Osamu Nakai , Yoshitomo Ozaki
IPC: C22B3/00
CPC classification number: C22B23/043 , C01G53/11 , C22B15/0093 , C22B23/0407 , C22B23/0453 , C22B23/0461 , Y02P10/236
Abstract: This invention provides a method for shortening operation shutdown time of high pressure acid leach equipment in a hydrometallurgical process, wherein the high pressure acid leach equipment comprises (i) means to transfer an ore slurry into the high pressure acid leach equipment; (ii) means to increase temperature and pressure of an ore slurry before leaching; (iii) means to add sulfuric acid into the high pressure acid leach equipment and to leach the ore slurry to obtain a leached slurry at high temperature under high pressure; (iv) means to adjust the pressure of the leached slurry; and (v) means to discharge the leached from the high pressure acid leach equipment; wherein, upon operation shutdown of the high pressure acid leach equipment, the leached slurry is subjected to self-circulation inside the high pressure acid leach equipment.
Abstract translation: 本发明提供了一种在湿法冶金过程中缩短高压酸浸设备的操作停机时间的方法，其中高压酸浸设备包括（i）将矿石浆料转移到高压酸浸设备中的方法; （ii）在浸出前增加矿浆的温度和压力的手段; （iii）将硫酸加入到高压酸浸设备中，并在高压高压下浸出矿浆以获得浸出的浆料; （iv）调节浸出的浆料的压力的装置; 和（v）从高压酸浸设备中排出的装置; 其中，在高压酸浸设备运行停机时，浸出的浆料在高压酸浸设备内进行自循环。
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公开(公告)号：US20180273411A1
公开(公告)日：2018-09-27
申请号：US15542485
申请日：2015-09-15
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Hiroyuki Mitsui , Osamu Nakai , Keisuke Shibayama , Sho Shirai
CPC classification number: C02F9/00 , C02F1/5236 , C02F1/66 , C02F1/70 , C02F2101/22 , C22B3/44
Abstract: The present invention provides a chromium-containing water treatment method that allows treatment of water that contains chromium (chromium-containing water) at low cost. A chromium-containing water treatment method according to the present invention comprises: a reduction step in which chromium-containing water 11 and a liquid 12 containing 5-50 ppm of hydrogen sulfide are mixed, and the mixture is adjusted to pH 3.5 or lower and ORP 200-400 mV by adding an acid 13 thereto, so as to reduce chromium contained in the water; and a precipitation separation step in which a neutralizing agent is added to a solution 11′ obtained via the reduction step so as to adjust the solution 11′ to pH 8-9, thereby precipitating and separating, as a hydroxide, the reduced chromium contained in the solution.
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公开(公告)号：US09719153B2
公开(公告)日：2017-08-01
申请号：US14063403
申请日：2013-10-25
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Keisuke Shibayama , Osamu Nakai , Yoshitomo Ozaki
CPC classification number: C22B23/043 , C01G53/11 , C22B15/0093 , C22B23/0407 , C22B23/0453 , C22B23/0461 , Y02P10/236
Abstract: This invention provides a method for shortening operation shutdown time of high pressure acid leach equipment in a hydrometallurgical process, wherein the high pressure acid leach equipment comprises (i) means to transfer an ore slurry into the high pressure acid leach equipment;(ii) means to increase temperature and pressure of an ore slurry before leaching; (iii) means to add sulfuric acid into the high pressure acid leach equipment and to leach the ore slurry to obtain a leached slurry at high temperature under high pressure; (iv) means to adjust the pressure of the leached slurry; and (v) means to discharge the leached from the high pressure acid leach equipment; wherein, upon operation shutdown of the high pressure acid leach equipment, the leached slurry is subjected to self-circulation inside the high pressure acid leach equipment.
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Patent Agency Ranking
公开(公告)号：US09561972B2
公开(公告)日：2017-02-07
申请号：US14419543
申请日：2013-06-17
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Yasuo Yoshii , Keisuke Shibayama , Yoji Kyoda , Yoshitomo Ozaki , Osamu Nakai , Hiroyuki Mitsui
IPC: C02F1/52 , C02F1/44 , C02F103/16 , C02F101/10
CPC classification number: C02F1/5236 , C02F1/444 , C02F1/5245 , C02F2101/10 , C02F2103/16 , C02F2209/06 , C02F2209/10
Abstract: The present invention aims at providing a method for effluent treatment, which enables the separation and recovery of a high-density and high-concentration aluminum sediment from waste water that is discharged in the smelting of a nickel oxide ore and contains aluminum ions. In the present invention, an alkali and an iron-containing solid are added to waste water containing aluminum ions to form a slurry, and the slurry is allowed to stand to perform solid-liquid separation, whereby an aluminum sediment and an effluent is formed.
Abstract translation: 本发明的目的在于提供一种废水处理方法，其能够从在氧化镍矿石的冶炼中排出并含有铝离子的废水中分离和回收高浓度和高浓度的铝沉淀物。 在本发明中，向含有铝离子的废水中加入碱和含铁固体，形成浆料，使其静置，进行固液分离，形成铝沉淀物和流出物。
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公开(公告)号：US20150225269A1
公开(公告)日：2015-08-13
申请号：US14419543
申请日：2013-06-17
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Yasuo Yoshii , Keisuke Shibayama , Yoji Kyoda , Yoshitomo Ozaki , Osamu Nakai , Hiroyuki Mitsui
IPC: C02F1/52
CPC classification number: C02F1/5236 , C02F1/444 , C02F1/5245 , C02F2101/10 , C02F2103/16 , C02F2209/06 , C02F2209/10
Abstract: The present invention aims at providing a method for effluent treatment, which enables the separation and recovery of a high-density and high-concentration aluminum sediment from waste water that is discharged in the smelting of a nickel oxide ore and contains aluminum ions. In the present invention, an alkali and an iron-containing solid are added to waste water containing aluminum ions to form a slurry, and the slurry is allowed to stand to perform solid-liquid separation, whereby an aluminum sediment and an effluent is formed.
Abstract translation: 本发明的目的在于提供一种废水处理方法，其能够从在氧化镍矿石的冶炼中排出并含有铝离子的废水中分离和回收高浓度和高浓度的铝沉淀物。 在本发明中，向含有铝离子的废水中加入碱和含铁固体，形成浆料，使其静置，进行固液分离，形成铝沉淀物和流出物。
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公开(公告)号：US10017835B2
公开(公告)日：2018-07-10
申请号：US15554869
申请日：2015-12-01
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Shinichiro Nakamura , Osamu Nakai , Hiroyuki Mitsui , Keisuke Shibayama
CPC classification number: C22B3/44 , C01G53/11 , C01P2004/61 , C22B23/04 , C22B23/043 , C22B23/0461
Abstract: Provided is a method for producing nickel sulfide from an acidic sulfuric acid solution containing nickel, which is capable of suppressing particle diameters of nickel sulfide obtained thereby. The present invention is a method for producing nickel sulfide by causing a sulfurization reaction by blowing a hydrogen sulfide gas into an acidic sulfuric acid solution containing nickel, wherein: nickel sulfide having particle diameters of 5-20 μm and serving as seed crystals is added into an acidic sulfuric acid solution having a nickel concentration of 0.5-5.0 g/L in an amount of 40-500% by mass relative to the amount of nickel contained in the acidic sulfuric acid solution; and a hydrogen sulfide gas is blown into the acidic sulfuric acid solution, into which the seed crystals have been added, while setting the amount of the hydrogen sulfide gas blown in to be within the range of 0.30-0.85 Nm3/kg-Ni.
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公开(公告)号：US20180044760A1
公开(公告)日：2018-02-15
申请号：US15554869
申请日：2015-12-01
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Shinichiro Nakamura , Osamu Nakai , Hiroyuki Mitsui , Keisuke Shibayama
CPC classification number: C22B3/44 , C01G53/11 , C01P2004/61 , C22B23/04 , C22B23/043 , C22B23/0461 , Y02P10/234
Abstract: Provided is a method for producing nickel sulfide from an acidic sulfuric acid solution containing nickel, which is capable of suppressing particle diameters of nickel sulfide obtained thereby. The present invention is a method for producing nickel sulfide by causing a sulfurization reaction by blowing a hydrogen sulfide gas into an acidic sulfuric acid solution containing nickel, wherein: nickel sulfide having particle diameters of 5-20 μm and serving as seed crystals is added into an acidic sulfuric acid solution having a nickel concentration of 0.5-5.0 g/L in an amount of 40-500% by mass relative to the amount of nickel contained in the acidic sulfuric acid solution; and a hydrogen sulfide gas is blown into the acidic sulfuric acid solution, into which the seed crystals have been added, while setting the amount of the hydrogen sulfide gas blown in to be within the range of 0.30-0.85 Nm3/kg-Ni.
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公开(公告)号：US20140151472A1
公开(公告)日：2014-06-05
申请号：US14237593
申请日：2012-11-01
Applicant: SUMITOMO METAL MINING CO., LTD.
Inventor： Hiroyuki Mitsui , Keisuke Shibayama , Hirofumi Shoji , Tatsuya Higaki , Yoji Kyoda , Osamu Nakai
IPC: C22B3/00
CPC classification number: C22B23/0407 , B02C19/00 , C22B1/00 , C22B23/005
Abstract: Disclosed is a method for producing an ore slurry that can suppress a rise in the viscosity of the ore slurry and consequently prevent a failure in transporting the slurry, and also to provide a metal refining method utilizing such a slurry producing method. The present invention includes: a pulverizing/classifying step of pulverizing raw material ores and classifying the resulting ores at a predetermined classifying point so that oversized ore particles are removed so as to obtain a coarse ore slurry composed of undersized ore particles; a grain size measuring step of measuring the grain size of the resulting coarse ore slurry; and an ore slurry condensing step of loading the coarse ore slurry to a solid-liquid separation device and separating and removing moisture contained in the coarse ore slurry therefrom so as to condense ore components.
Abstract translation: 公开了一种能够抑制矿浆的粘度上升的矿石浆料的制造方法，防止了浆料的输送失败，并且提供了利用这种浆料生产方法的金属精炼方法。 本发明包括：粉碎/分级步骤，将原料矿石粉碎并在预定分级点对所得矿石进行分级，以便除去过大的矿石颗粒，以获得由过小的矿石颗粒组成的粗矿浆料; 测定所得粗矿浆料的粒径的粒度测定工序; 以及将粗矿石浆料装载到固液分离装置并从其中分离除去粗矿浆中含有的水分，以使矿石成分浓缩的矿浆冷凝工序。
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