WO1991016986A1 - Procede d'enrichissement de monazite - Google Patents

Procede d'enrichissement de monazite Download PDF

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Publication number
WO1991016986A1
WO1991016986A1 PCT/AU1991/000011 AU9100011W WO9116986A1 WO 1991016986 A1 WO1991016986 A1 WO 1991016986A1 AU 9100011 W AU9100011 W AU 9100011W WO 9116986 A1 WO9116986 A1 WO 9116986A1
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WO
WIPO (PCT)
Prior art keywords
collector
acid
oil
ore
emulsion
Prior art date
Application number
PCT/AU1991/000011
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English (en)
Inventor
Srdjan Bulatovic
Graham C. Willett
Original Assignee
Carr Boyd Minerals Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carr Boyd Minerals Limited filed Critical Carr Boyd Minerals Limited
Publication of WO1991016986A1 publication Critical patent/WO1991016986A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/002—Inorganic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/008—Organic compounds containing oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/01—Organic compounds containing nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/012—Organic compounds containing sulfur
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/014—Organic compounds containing phosphorus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/016—Macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/007—Modifying reagents for adjusting pH or conductivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02—Ores

Definitions

  • a MONAZITE BENEFICIATION PROCESS FIELD OF THE INVENTION This invention relates to the separation of oxidic minerals by froth flotation, more specifically to a flotation separation process for the recovery of rare earth minerals, particularly monazite from complex and refractory ores and concentrates.
  • Monazite is a rare earth containing mineral comprising phosphates of the cerium group of rare earth metals (lanthanides) in a complex oxidized ore. Monazite may also contain yttrium group compounds.
  • Monazite is found in several continents, such as Australia, Africa, and in North and South America, usually in complex disseminated ores, accompanied by other valuable minerals containing yttrium, niobium, titanium, zirconium and thorium.
  • a typical monazite would have the following composition with respect to its rare earth metal oxide content: Weight percent
  • rare earth minerals falling within the scope of this invention include, xenoti e, churchite, rhabdophane, cheralite, cerianite, florencite, and bastnaesite.
  • secondary non-rare earth minerals such as apatite, crandallite and goethite carrying minor amounts of rare earth minerals fall within the scope of the present invention.
  • the present invention relates to the recovery of all the aforementioned rare earth minerals, for the purposes of describing the invention, reference will be made primarily to monazite only.
  • Froth flotation is a process step often used to separate the wanted components from the unwanted components of the ore.
  • Froth flotation is usually preceded by an ore conditioning step, in which various conditioning agents are added to the ore slurry. Conditioning agents include pH modifiers, activators, regulators, depressants, collectors, frothers and the like, and are generally used for the purpose of conditioning the surface of the ore particles.
  • the slurry of the conditioned ore is then subjected to aeration, resulting in air bubbles attaching themselves to the surface of certain ore particles which then rise to the top of the slurry, while other ore particles sink to the bottom.
  • the role of the collector agent is to render the surface of the valuable component containing particles hydrophobic, thereby allowing air bubbles to adhere to these particles. These particles are subsequently separated in the froth.
  • a depressant agent renders the surface of the unwanted ore particles wettable (hydrophillic) .
  • the object of the froth flotation step is to obtain a froth substantially enriched by the value minerals of the ore, and at the same time depressing the unwanted mineral components into the tailing. It should be noted that the depressed ore fraction may contain other value minerals which may be recovered by subsequent flotation steps utilizing other flotation agents.
  • Anionic and cationic surface activators are often used as collectors in the flotation of non-sulphidic ores. Such collectors are intended to be selectively adsorbed on the surface of the value minerals in order to obtain higher selectivity in the flotation stage.
  • Monazite may be present in beach sand deposits found in India and Australia and vein-type ores found in South Africa and Brazil.
  • the concentration of monazite found in beach sand and vein-type ores is achieved by using conventional techniques such as gravity separation, magnetic and electrostatic separation, or froth flotation.
  • a typical process described for the beneficiation of monazite found in vein-type deposits, is described in US patent 2,610,738.
  • Monazite contained in complex ores for example pegmatites, magmatites and carbonates, are likely to yield low grade concentrates when treated with conventional reagents utilized in the mineral separation of monazite contained in ores having simple gangue composition. More selective reagents are required in the separation of rare earth metal oxides contained in complex ores.
  • bastnaesite which is a rare earth metal compound with a fluorcarbonate structure.
  • the process of U.S. patent 4,772,382 utilizes a collector emulsion based on sulphonated fatty acids, petroleum sulphonate and a primary amine.
  • Iron oxides such as goethite, hematite, and siderite are especially detrimental to froth flotation separation when they are present in ores containing monazite. Such iron oxide bearing compounds would normally float together with the rare earth minerals, when using conventional froth flotation agents.
  • a new collector agent has been found for the satisfactory froth flotation separation of rare earth minerals particularly when they are finely disseminated in an ore having complex gangue compositions.
  • the present invention consists in a collector agent for the froth flotation separation of rare earth minerals in an ore. comprising a composition formed by preparing an emulsion of: a fatty acid; an emulsifier; a phosphonic acid derivative or sa ⁇ : thereof; optionally an oil and/or an amine; and subsequently oxidizing the e ulsi r. until it becomes homogenized.
  • the present invention further consists in a process for the beneficiation. of rare earth minerals contained in an ore or concentrate comprising the steps of: (a) forming the ore or concentrate into an aqueous slurry; (b) adding to said slurry a collector agent formed by preparing an emulsion of
  • a fatty acid (i) an emulsifier, (i ⁇ ) a phosphonic acid derivative or a salt thereof, and, optionally an oil and/or an amine, then oxidizing the emulsion until said emulsion becomes homogenized,
  • an oil preferably a non polar lower carbon chain oil will be included in the emulsion. This oil serves to stabilize the froth and increase cleaning efficiency without necessarily increasing rougher recoveries.
  • the collector agent is added to the slurry of the ground ore, which has been conditioned with conventional conditioning agents.
  • the conditioned slurry containing the collector agent is then subjected to a froth flotation process step yielding ?. froth in which the rare earth mineral is concentrated.
  • Figure 1 show?; a schematic flowsheet for a monazite ore beneficiation process utilising the present invention.
  • the complex ore containing monazite accompanied by gangue comprising carbonates, iron oxides, silicates, alumino-silicates, manganese or similar compounds, is ground to a suitable liberation size.
  • the monazite in such ores may contain cerium group rare earth metal oxides, but also members of the yttrium metals such as yttrium, niobium, titanium, zirconium and in some cases, thorium compounds.
  • the fineness of grind required may be of a particle size range which is at least 80% smaller than 37 urn.
  • Some complex ores also contain clay and similar slimes, and in such instances it is preferable that these be removed by desliming before grinding.
  • a second desliming step is often applied after grinding. Grinding may either be wet or dry grinding.
  • the deslimed ground ore is mixed with water and made into an aqueous slurry.
  • the ore slurry is subsequently conditioned with the addition of various conditioning agents, including pH modifiers, depressants and the like.
  • a satisfactory depressant and pH modifier to be used in the present process is sodium sulphide (Na 2 S.9H 2 0).
  • An effective depressant in the preferred embodiment of this invention is a mixture of dextrin and carboxymethyl cellulose, used together with mercapto-acetic acid as a stabilizer.
  • an anionic acrylic acid homopolymer may be added at a subsequent stage of conditioning.
  • Dextrin is a known polysaccharide having the general formula of (C6H ⁇ ) ⁇ 5) n .
  • an anionic acrylic acid homopolymer is added as an additional depressant.
  • Each of the above reagents is add d in a separate conditioning stage with approximately 10 minutes agitation after each addition.
  • sodium sulphide as a pH modifier and depressant, and mixtures of dextrin, carboxylmethyl cellulose and mercapto-acetic acid, with or without acrylic acid homopolymer, are merely the preferred conditioning agents, but they are by no means essential for the practice of the present invention.
  • Other suitable pH modifiers, activators and depressants may be substituted in the conditioning of the monazite-containing ore.
  • the choice of depressants and modifiers depends on the gangue composition of the ore to be treated.
  • the novel collector agent of this invention has a fatty acid base.
  • a convenient source of fatty acids is tall oil, the fatty acids of which have the general formula C17H31.35 COOH, and are composed of long chain saturated or unsaturated mono-carboxylic acids.
  • One fatty acid that has been found to be effective in this invention is oleic acid.
  • fatty acid is present in the collector in a concentration of 48-62 weight percent.
  • the fatty acid in the collector is emulsified by the presence of a suitable emulsifier and a phosphonic acid derivative or salt thereof.
  • Suitable emulsifiers have been found to be sodium oleate and a secondary amine modified sulfonated fatty acid, having branched or straight aliphatic chains containing 15-19 carbon atoms.
  • An example of this latter compound is sold under the trade name Lilaflot 0S100 by KenoGard AB of Sweden.
  • the concentration of the emulsifier will be 14-22 weight percent.
  • a variety of phosphonic acid derivative or salts thereof may be used.
  • the present inventors have found that Na-2-ethylhexylimino-bis-methylenephosphonate is useful as are styrenephosphonic acid and benzylphosphonic acid.
  • the former compound is available from Albright & Wilson Ltd under the trademark BRIQUEST 281-25S.
  • the concentration of phosphonic acid derivative or salt thereof will be 14-22 weight percent.
  • an oil can be included to stabilize the froth and promote cleaning efficiency.
  • the oil will typically be included in the collector in a concentration of 8-12 weight percent.
  • the oil will be a non polar lower carbon chain oil, examples being fuel oil and pine oil.
  • a primary amine may be included in the emulsion prior to oxidation. Typically the amine would be added at a concentration of 10% w/w with respect to the emulsion.
  • An example of a suitable amine is Amine D which is a rosin amine available from Hercules Inc, USA. The principle component of Amine D is dehydroabietylamine.
  • the emulsion of the above composition is subsequently oxidized.
  • This oxidation may be conducted by passing an oxygen-containing gas, such as air or pure oxygen through the emulsion, until the solution is clarified.
  • the oxidized emulsion is added in the preferred embodiment, to the conditioned ore slurry.
  • the rate of the collector addition depends on the amount of slimes and complex iron bearing compounds present in the ore, and for best results, it is added in amounts varying from 600 g/t to 2000 g/t of ore.
  • Conditioning with the oxidized collector is followed by conventional rougher and cleaner flotation stages, which are usually part of a conventional flotation process. It is customary to subject the collector conditioned slurry to froth flotation process for about 7-15 minutes, without further reagent additions.
  • a relatively low grade rougher concentrate is conventionally upgraded by cleaning process steps with further additions of depressants.
  • the depressant mixtures used in the preferred embodiment are known to be effective in depressing iron oxides, aluminium silicates, manganese and iron carbonates. These depressants, used together with the oxidized collector emulsion of the present invention, have been found to enhance the selectivity of the collector emulsion and also to improve the grade of the monazite concentrate.
  • the ore was scrubbed by conventional methods and deslimed to remove the bulk of the clay and limonite containing minerals, followed by grinding to 325 Tyler mesh nominal size. The ground ore was deslimed a second time to remove secondary slimes. The slurry of the ore was conditioned in the presence of sodium carbonate as a pH modifier, and sodium-silicate and starch were used as depressants. High purity oleic acid acted as a collector agent. The above reagents were added at the following rate:
  • EXAMPLE 2 In another laboratory froth flotation separation test for the same ore as in Example 1, a combination of conventional collectors, oleic acid and a sulphonate, were used.
  • the depressants in conditioning the ground ore were similar to those in Example 1.
  • the reagents were added in the following quantities:
  • Example 1 Laboratory froth flotation separation tests were conducted on the same ore as that used in Example 1 and Example 2, utilizing other commercially available conditioning agents and the emulsion of the present invention.
  • the emulsion of the present invention is denoted as Collector CB110.
  • composition of CB110 was: oleic acid 60% w/w
  • This composition was prepared by mixing the components and then oxidizing in air at 75°C for 1 hour.
  • the ground and deslimed ore pulp was made into an aqueous slurry and conditioned with sodium sulphide pH modifier, and the depressant mixture composed of dextrin/carboxymethyl cellulose/mercapto acetic acid, in the proportions described hereinabove.
  • the conditioned ore was then subjected to froth flotation separation in the presence of CB110 collector.
  • Arcylic polymer (commercially available as DA663): 500 g/t
  • Cerium (Ce 2 ⁇ 3) Samarium (Sm 2 ⁇ 3) Lanthanum ( a 2 ⁇ 3) Praseodymium Pr ⁇ 3) Neodymium (Nd 2 ⁇ 3) Europium (E 2O3) Gadolinium (Gd2 ⁇ 3) Terbium ( b 2 ⁇ 3)
  • Dysprosium (Dy 2 ⁇ 3) Holmium (H02O3) Erbium (Er 2 ⁇ 3) Thulium ( m 2 ⁇ 3) Ytterbium (Yb 2 ⁇ 3) Lutetium (Lu 2 ⁇ 3)
  • Example 5 Laboratory froth flotation separation tests were performed on an ore containing higher concentrations of the yttrium group metals. The conditions and conditioning agents added were similar to those described in Examples 3 and 4. The ore of Example 5 had relatively high yttrium content and was relatively low in monazite.
  • the rate of reagent additions were as follows: Sodium sulphide, (Na 2 S.9H 2 0): 5000 g/t Dextrin/carboxymethyl cellulose/ mercapto-acetic acid: 2000 g/t
  • a collector of the invention that includes benzylphosphonic acid in place of Briquest 281-25S is advantageous for use in high content yttrium, high content iron and low content monazite ores.
  • each of the collectors was prepared by mixing the components, adding 10% of Amine D and then oxidizing in air at 75°C for 2 hours.
  • Acrylic polymer (DA663) 200 * WW82/770 2000
  • Acrylic polymer (DA663) 300 (375) * WW82/770 525 (600)
  • Ambergum 770 (a medium range molecular weight carboxymethylcellulose supplied by Hercules Inc)
  • the pH of the collectors were as follows:
  • collectors that have been tested satisfactorily include: -
  • All of the collectors had 10% Amine D added and were oxidized in air for 2 hours at 75°C.
  • the present inventors have also found that substitution of tannic acid or quebracho for carboxymethyl cellulose in the depressant WW82 reagent gives improved iron rejection.
  • F-44 DA663 150 10.7 WW82/CMC/sodium dichro ate 300 F-45 DA663 150 10.6
  • Each of the roughers included 5000 g/t of sodium sulfide whilst in the cleaners, the concentration was 600 g/t.
  • the pH of all of the roughers was 11.1.
  • the collector CB110-B3 was used at 2000 g/t for the roughers and at 400 g/t for cleaners F-37, F-40 and F-41, 300 g/t for F-44 and F-47 and at 200 g/t for the remainder.
  • this oxidized collector emulsion is suitable for recovering yttrium group minerals, such as churchite, xenotime and gadolinite.
  • the selectivity of the collector agent has been found to be increased in the presence of sodium sulphide as conditioning reagent in assisting the depression of clay minerals and iron oxides.
  • Another advantage of this flotation separation method is that the recovery of yttrium group minerals is additionally increased. These compounds report in the froth.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Agent collecteur permettant de procéder à une flottation à la mousse de minéraux de terres rares. Ledit agent collecteur est une émulsion comprenant un acide gras, un émulsifiant et un dérivé d'acide phosphonique ou un sel de celui-ci. On peut inclure dans l'émulsion une huile et/ou une amine. Afin de préparer l'agent collecteur, les constituants sont transformés en une émulsion puis ils sont oxydés jusqu'à ce qu'ils soient homogènes. On peut procéder à l'oxydation par chauffage de l'émulsion dans l'air à une température d'au moins 60 °C. L'invention concerne également un procédé de flottation à la mousse de minéraux de terres rares à l'aide de cet agent collecteur.
PCT/AU1991/000011 1990-05-10 1991-01-11 Procede d'enrichissement de monazite WO1991016986A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPK0072 1990-05-10
AUPK007290 1990-05-10

Publications (1)

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WO1991016986A1 true WO1991016986A1 (fr) 1991-11-14

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2033964A3 (fr) * 2007-08-25 2009-10-28 Evonik Goldschmidt GmbH Inhibiteur de corrosion
WO2010002980A2 (fr) * 2008-07-02 2010-01-07 Georgia-Pacific Chemicals Llc Collecteurs
CN101474597B (zh) * 2009-01-23 2011-09-07 武汉工程大学 一种混合稀土精矿的独居石与氟碳铈矿浮选分离方法
CN101444761B (zh) * 2009-01-04 2011-11-30 武汉工程大学 一种高含独居石的氟碳铈矿混合稀土矿的浮选分离方法
US10006102B2 (en) 2015-01-08 2018-06-26 Institute Of Multipurpose Utilization Of Mineral Resources Monazite and apatite paragenetic ore enrichment method
CN111589573A (zh) * 2020-05-26 2020-08-28 中国恩菲工程技术有限公司 稀土矿的选矿方法
CN114074029A (zh) * 2020-08-18 2022-02-22 包头稀土研究院 高品位混合稀土精矿的选矿方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1249008A (en) * 1969-08-14 1971-10-06 Secretary Trade Ind Brit Improvements in or relating to the separation of tin ores
DD259153A1 (de) * 1983-03-29 1988-08-17 Adw Ddr Mittel zur flotation oxidischer erze, insbesondere oxidischer zinnerze
DD259154A1 (de) * 1983-03-29 1988-08-17 Adw Ddr Mittel zur flotation oxidischer erze, insbesondere oxidischer zinnerze
DD259155A1 (de) * 1983-03-29 1988-08-17 Adw Ddr Mittel zur flotation oxidischer erze, insbesondere oxidischer zinnerze
DD259156A1 (de) * 1983-03-29 1988-08-17 Adw Ddr Mittel zur flotation oxidischer erze, insbesondere oxidischer zinnerze

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1249008A (en) * 1969-08-14 1971-10-06 Secretary Trade Ind Brit Improvements in or relating to the separation of tin ores
DD259153A1 (de) * 1983-03-29 1988-08-17 Adw Ddr Mittel zur flotation oxidischer erze, insbesondere oxidischer zinnerze
DD259154A1 (de) * 1983-03-29 1988-08-17 Adw Ddr Mittel zur flotation oxidischer erze, insbesondere oxidischer zinnerze
DD259155A1 (de) * 1983-03-29 1988-08-17 Adw Ddr Mittel zur flotation oxidischer erze, insbesondere oxidischer zinnerze
DD259156A1 (de) * 1983-03-29 1988-08-17 Adw Ddr Mittel zur flotation oxidischer erze, insbesondere oxidischer zinnerze

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2033964A3 (fr) * 2007-08-25 2009-10-28 Evonik Goldschmidt GmbH Inhibiteur de corrosion
US9566589B2 (en) 2008-07-02 2017-02-14 Georgia-Pacific Chemicals Llc Collectors
AU2009267003A1 (en) * 2008-07-02 2010-01-07 Georgia-Pacific Chemicals Llc Collectors
WO2010002980A3 (fr) * 2008-07-02 2010-03-11 Georgia-Pacific Chemicals Llc Collecteurs
CN102076419A (zh) * 2008-07-02 2011-05-25 佐治亚-太平洋化工品有限公司 捕收剂
US8403146B2 (en) 2008-07-02 2013-03-26 Georgia-Pacific Chemicals Llc Collectors
AU2009267003B2 (en) * 2008-07-02 2016-01-14 Georgia-Pacific Chemicals Llc Collectors
WO2010002980A2 (fr) * 2008-07-02 2010-01-07 Georgia-Pacific Chemicals Llc Collecteurs
CN101444761B (zh) * 2009-01-04 2011-11-30 武汉工程大学 一种高含独居石的氟碳铈矿混合稀土矿的浮选分离方法
CN101474597B (zh) * 2009-01-23 2011-09-07 武汉工程大学 一种混合稀土精矿的独居石与氟碳铈矿浮选分离方法
US10006102B2 (en) 2015-01-08 2018-06-26 Institute Of Multipurpose Utilization Of Mineral Resources Monazite and apatite paragenetic ore enrichment method
CN111589573A (zh) * 2020-05-26 2020-08-28 中国恩菲工程技术有限公司 稀土矿的选矿方法
CN114074029A (zh) * 2020-08-18 2022-02-22 包头稀土研究院 高品位混合稀土精矿的选矿方法
CN114074029B (zh) * 2020-08-18 2024-03-12 包头稀土研究院 高品位混合稀土精矿的选矿方法

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