公开(公告)号：US12054452B2

公开(公告)日：2024-08-06

申请号：US17005324

申请日：2020-08-28

Applicant: CENTRAL SOUTH UNIVERSITY

Inventor： Hong Zhong ,  Xin Ma ,  Shuai Wang

IPC: C07C329/16 ,  B03D1/002 ,  B03D1/14

CPC classification number: C07C329/16 ,  B03D1/002 ,  B03D1/14 ,  B03D2201/007 ,  B03D2201/02 ,  B03D2203/02

Abstract: A method for preparing xanthate by a slurry method includes steps of: adding a mixture of dichloromethane and carbon disulfide as a reaction solvent in a slurry reactor, and then adding alcohol and caustic alkali to react with carbon disulfide under less than 1 atm to remove heat released by the reaction by evaporating the solvent; performing vacuum distillation after the reaction to remove the solvent and water, so as to obtain the xanthate; transporting the xanthate to a granulation equipment for granulating, and then drying in a drying equipment to obtain a product. The method is performed in a system formed by a reaction equipment, a solvent recovery equipment, the granulation equipment, and the drying equipment, wherein a main equipment of the reaction system is a slurry reactor. The method has advantages of high efficiency, low energy consumption, good safety, environmental friendliness, convenient operation and the like.

公开(公告)号：US09724706B2

公开(公告)日：2017-08-08

申请号：US15375653

申请日：2016-12-12

Applicant: Akzo Nobel Chemicals International B.V.

Inventor： Odair Alves De Lima ,  Kelly Ivone Pina Albino

IPC: B03D1/02 ,  B03D1/01

CPC classification number: B03D1/011 ,  B03D1/01 ,  B03D1/02 ,  B03D2201/007 ,  B03D2201/02 ,  B03D2203/04 ,  B03D2203/06

Abstract: The present invention relates to a method for the flotation of silicates from ores in the presence of a collecting agent and an effective amount of a froth modifier/collecting booster comprising at least one of the compounds of general formula I or mixtures thereof: wherein X is C1-C3 alkyl; R′ is straight or branched hydrocarbyl group containing 8 to 22 carbon atoms; n is integer from 2-4; m can vary from 0 to 2 and R′ is X or —(CH2)n-N(X)2, with the proviso that when R′ is —(CH2)n-N(X)2, then m is 1.

公开(公告)号：US09415330B2

公开(公告)日：2016-08-16

申请号：US13989935

申请日：2011-12-01

Applicant: Yuri Alencar Marques ,  Marcelo Beck Graziani

Inventor： Yuri Alencar Marques ,  Marcelo Beck Graziani

IPC: B01D19/04 ,  B03D1/08

CPC classification number: B01D19/04 ,  B03D1/082 ,  B03D2201/007

Abstract: A blend comprising from 1 to 99 weight percent one or more polypropylene glycols wherein each polypropylene glycol has a weight average molecular weight of greater than or equal to 1000 grams/mole and from 1 to 99 weight percent one or more dipropylene glycol phenyl ethers and/or diethylene glycol phenyl ethers wherein the blend has a viscosity (ASTM D445, @ 25° C.) of less than or equal to 400 cSt and viscosity (ASTM D445, @ 40° C.) of less than or equal to 200 cSt, is provided. Processes using the blend in mining applications are also provided.

Abstract translation: 包含1至99重量％的一种或多种聚丙二醇的共混物，其中每个聚丙二醇具有大于或等于1000克/摩尔的重均分子量和1至99重量％的一种或多种二丙二醇苯基醚和/ 或二甘醇苯基醚，其中所述共混物具有小于或等于400cSt的粘度（ASTM D445，25℃）和小于或等于200cSt的粘度（ASTM D445，@ 40℃） 被提供。 还提供了在采矿应用中使用混合物的工艺。

公开(公告)号：US20150360238A1

公开(公告)日：2015-12-17

申请号：US14654473

申请日：2013-12-23

Applicant: PLATREEF RESOURCES PROPRIETARY LIMITED ,  JAPAN OIL, GAS AND METALS NATIONAL CORPORATION

Inventor： Stephen Ralph Amos ,  Iichi Nakamura ,  Dominique Lascelles

IPC: B03D1/02 ,  B03D1/012 ,  B03D1/01 ,  B03D1/008

CPC classification number: B02C23/36 ,  B02C23/38 ,  B03D1/008 ,  B03D1/01 ,  B03D1/012 ,  B03D1/02 ,  B03D2201/007 ,  B03D2203/025

Abstract: The invention provides method to recover, by means of froth flotation, a desired metal value from a feedstock containing it. In a comminution step, the feedstock is comminuted using comminuting media of an iron and chrome steel alloy comprising from 12% to 30% chrome. In a conditioning step, the feedstock material is contacted with thiourea and/or oxalic acid as primary flotation reagents. The conditioning step comprises the comminution step, in which a quantity of the primary flotation reagent/s being added and preconditioned comminuted feedstock material being obtained. The conditioning step also comprises an optional conditioning finishing step, in which a mixture of the preconditioned comminuted feedstock material and a liquid is subjected to stirring and with conditioned comminuted feedstock material being obtained from the finishing step. In a recovery step, at least some of the desired metal value is recovered by froth flotation from the preconditioned or conditioned feedstock.

Abstract translation: 本发明提供了通过泡沫浮选从含有它的原料中回收所需金属值的方法。 在粉碎步骤中，使用包含12％至30％铬的铁和铬钢合金的粉碎介质将原料粉碎。 在调节步骤中，将原料与硫脲和/或草酸作为主要浮选试剂接触。 调理步骤包括粉碎步骤，其中加入一定量的初级浮选试剂和获得预处理的粉碎原料。 调理步骤还包括任选的调理整理步骤，其中预处理的粉碎的原料和液体的混合物经受搅拌，并且从精制步骤获得经调节的粉碎原料。 在回收步骤中，通过泡沫浮选从预处理或调节原料回收至少一些所需的金属值。

公开(公告)号：US08931642B2

公开(公告)日：2015-01-13

申请号：US14153931

申请日：2014-01-13

Applicant: William D. Simmons

Inventor： William D. Simmons

IPC: B03D1/02 ,  B03D1/002 ,  B03D1/06 ,  C22B3/22

CPC classification number: B03D1/06 ,  B03D1/002 ,  B03D1/02 ,  B03D1/085 ,  B03D2201/007 ,  B03D2203/02 ,  B03D2203/04

Abstract: A method of extracting targeted metallic minerals from ores that contain sulfide metallic minerals along with oxide minerals, carbonate minerals, silicate minerals, halide minerals or combinations thereof. In the method, an ore slurry containing the metallic mineral in oxide, carbonate, silicate or halide form is provided. The slurry is activated by adding sodium thiosulfate and sodium metabisulfite, whereby the targeted metallic mineral forms an intermediary metal complex with the sodium thiosulfate and sodium metabisulfite. One or more metal release components are introduced into the ore slurry; whereby the targeted metallic mineral is released from the intermediary metal complex to form a metal sponge. This metal sponge is then subjected to a flotation process, whereby the targeted metallic mineral is drawn out of the ore slurry and thereby extracted from the ore.

Abstract translation: 从矿石中提取含有硫化物金属矿物的目标金属矿物以及氧化物矿物，碳酸盐矿物，硅酸盐矿物，卤化物矿物或其组合的方法。 在该方法中，提供了含有氧化物，碳酸盐，硅酸盐或卤化物形式的金属矿物的矿浆。 通过加入硫代硫酸钠和焦亚硫酸钠活化浆料，由此目标金属矿物与硫代硫酸钠和偏亚硫酸氢钠形成中间金属络合物。 将一种或多种金属释放组分引入矿浆中; 从而将目标金属矿物从中间金属络合物中释放以形成金属海绵。 然后对该金属海绵进行浮选工艺，由此将目标金属矿物从矿浆中抽出，从而从矿石中提取。

公开(公告)号：US20130277279A1

公开(公告)日：2013-10-24

申请号：US13989935

申请日：2011-12-01

Applicant: Yuri Alencar Marques ,  Marcelo Beck Graziani

Inventor： Yuri Alencar Marques ,  Marcelo Beck Graziani

IPC: B01D19/04

CPC classification number: B01D19/04 ,  B03D1/082 ,  B03D2201/007

Abstract: A blend comprising from 1 to 99 weight percent one or more polypropylene glycols wherein each polypropylene glycol has a weight average molecular weight of greater than or equal to 1000 grams/mole and from 1 to 99 weight percent one or more dipropylene glycol phenyl ethers and/or diethylene glycol phenyl ethers wherein the blend has a viscosity (ASTM D445, @ 25° C.) of less than or equal to 400 cSt and viscosity (ASTM D445, @ 40° C. of less than or equal to 200 cSt, is provided. Processes using the blend in mining applications are also provided.

Abstract translation: 包含1至99重量％的一种或多种聚丙二醇的共混物，其中每个聚丙二醇具有大于或等于1000克/摩尔的重均分子量和1至99重量％的一种或多种二丙二醇苯基醚和/ 或二甘醇苯基醚，其中所述共混物具有小于或等于400cSt的粘度（ASTM D445，25℃）和粘度（ASTM D445，40℃，小于或等于200cSt，为 还提供了在采矿应用中使用混合物的工艺。

公开(公告)号：US20110198296A1

公开(公告)日：2011-08-18

申请号：US12706091

申请日：2010-02-16

Applicant: Daniel E. Child

Inventor： Daniel E. Child

IPC: B03D1/00

CPC classification number: B03D1/016 ,  B03D1/012 ,  B03D1/014 ,  B03D2201/007 ,  B03D2203/02 ,  B03D2203/025

Abstract: The invention provides a method of improving a flotation separation process. The method involves PAPEMP, a material previously thought to only be of use in controlling scale deposit on surfaces of equipment used in cyanide leaching. In the invention the PAPEMP is added to the flotation separation process for improved sulfide mineral separation. Not only does the addition of PAPEMP improve the overall recovery of sulfide complexed metals in flotation, but by doing so it also reduces the energy requirements and adds other efficiencies to other downstream ore processing and refining steps. This has the added benefit of helping to preserve the environment.

Abstract translation: 本发明提供了一种改进浮选分离方法。 该方法包括以前认为仅用于控制氰化物浸出设备表面上的垢沉积物的PAPEMP。 在本发明中，PAPEMP被添加到浮选分离过程中以改善硫化矿物分离。 增加PAPEMP不仅可以提高浮选中硫化物络合金属的总体回收率，而且还可降低能源需求，并为其他下游矿石加工和精炼步骤提供其他效率。 这有助于保护环境。

公开(公告)号：US20110039477A1

公开(公告)日：2011-02-17

申请号：US12812319

申请日：2009-01-09

Applicant: Geoffery David Senior ,  Brendan Pyke ,  Brian Judd

Inventor： Geoffery David Senior ,  Brendan Pyke ,  Brian Judd

IPC: B24B1/00 ,  B03D103/02 ,  B03D1/02

CPC classification number: C22B1/00 ,  B03D1/002 ,  B03D1/02 ,  B03D2201/007 ,  B03D2203/02 ,  C22B23/005

Abstract: The present invention provides a method of separating nickel bearing sulphides from mined ores or concentrates of mined ores that contain talc particles is disclosed. The method comprises adjusting the Eh of a slurry of mined ores or concentrates of mined ores and making particles of nickel bearing sulphides less hydrophobic than talc particles and floating the nickel bearing sulphide particles from the slurry.

Abstract translation: 本发明提供一种分离含镍硫化物的方法，该方法包括含有滑石颗粒的矿石矿石或矿石的浓缩物。 该方法包括调整矿石矿石或矿石浓缩物的浆料的Eh，并使含镍硫化物的颗粒比滑石颗粒疏水性更小，并将含镍硫化物颗粒从浆料中浮起。

公开(公告)号：US20110004043A1

公开(公告)日：2011-01-06

申请号：US12681554

申请日：2008-10-02

Applicant: Anselmo Basso

Inventor： Anselmo Basso

IPC: B09C1/04 ,  B09C1/02 ,  A62D3/00

CPC classification number: B09C1/02 ,  B01D1/24 ,  B01D21/01 ,  B03D1/002 ,  B03D1/14 ,  B03D2201/007 ,  B09C1/08 ,  C02F1/24 ,  C02F1/469 ,  C02F1/52 ,  C02F1/5227 ,  C02F1/5236 ,  C02F1/5245 ,  C02F1/62 ,  C02F1/66

Abstract: A process for decontaminating a medium polluted with metals and hydrophobic organic compounds (HOC) includes providing an acidic slurry of water, acid, chloride salt, surfactant, and the polluted medium. Flotation is preformed on the acidic slurry to form a HOC-rich froth and an HOC-depleted slurry and the froth is recovered. The slurry is separated to obtain a treated solid and a liquid effluent rich in metallic ions. Preferably, the process also includes recuperating the metals by chemical precipitation and/or electrodeposition to produce a treated solution. Also provided are a decontaminant having an acid, a chloride salt, and a surfactant as well as a chemical kit for decontaminating the polluted medium including the decontaminant in which the acid, chloride salt and surfactant can be mixed with polluted medium in the presence of water before removing at least a portion of the metals and HOC from the polluted medium.

Abstract translation: 用金属和疏水性有机化合物（HOC）污染的介质去污的方法包括提供水，酸，氯化物盐，表面活性剂和污染介质的酸性浆液。 在酸性浆料上进行浮选以形成富含HOC的泡沫和HOC贫化的浆料，回收泡沫。 分离浆料以获得处理的固体和富含金属离子的液体流出物。 优选地，该方法还包括通过化学沉淀和/或电沉积来还原金属以产生处理的溶液。 还提供了具有酸，氯化物盐和表面活性剂的净化剂以及用于净化包括其中酸，氯化物盐和表面活性剂的污染介质的污染物质的化学试剂盒，其中可以在水存在下将污染介质与污染的介质混合 在从污染介质中除去至少一部分金属和HOC之前。

公开(公告)号：US07516849B2

公开(公告)日：2009-04-14

申请号：US11677132

申请日：2007-02-21

Applicant: Guoxin Wang ,  Francisco J. Sotillo ,  George M. Lilley

Inventor： Guoxin Wang ,  Francisco J. Sotillo ,  George M. Lilley

IPC: B03D1/002 ,  B03D1/012 ,  B03D1/02

CPC classification number: B03D1/012 ,  B03D1/002 ,  B03D1/016 ,  B03D1/018 ,  B03D2201/007 ,  B03D2201/02 ,  B03D2203/02

Abstract: This invention relates to the pH modifier in alkaline froth flotation processes to treat oxide and semi-soluble salt ores, such as phosphates, sulfates, carbonates and halides, to increase the recovery while generally maintaining or improving selectivity, thus the grade of desired minerals. The invented pH modifier is used to replace traditional alkaline pH modifiers - hydroxides, carbonates and bicarbonates, such as sodium hydroxide, sodium carbonate, lime and ammonia in anionic flotation processes. The pH modifier is aqueous solution, comprised of combinations of sodium hydroxide, sodium carbonate, and sodium silicate, along with sulfonated surfactant products, such as sulfonated petroleum oil, fatty acids, alkylates, ethoxylated alcohol ethers, and also sulfosuccinamates; and anionic polymers. The pH modifier is also used as a promoter for anionic collectors and as a depressant for gangue minerals.

Abstract translation: 本发明涉及碱性泡沫浮选方法中的pH调节剂，用于处理氧化物和半可溶性盐矿，例如磷酸盐，硫酸盐，碳酸盐和卤化物，以提高回收率，同时通常保持或提高选择性，从而提高所需矿物的等级。 本发明的pH调节剂用于在阴离子浮选工艺中代替传统的碱性pH调节剂 - 氢氧化物，碳酸盐和碳酸氢盐，例如氢氧化钠，碳酸钠，石灰和氨。 pH调节剂是由氢氧化钠，碳酸钠和硅酸钠的组合组成的水溶液，以及磺化的表面活性剂产物，例如磺化石油，脂肪酸，烷基化物，乙氧基化醇醚和磺基琥珀酸盐; 和阴离子聚合物。 pH调节剂也用作阴离子捕集剂的促进剂，也用作脉石矿物的抑制剂。