SE521949C2 - Förfarande för skumflotation av silikatinnehållande järnmalm - Google Patents

Förfarande för skumflotation av silikatinnehållande järnmalm

Info

Publication number: SE521949C2
Authority: SE; Sweden
Prior art keywords: ether; monoamine; polyamine; group; process according
Prior art date: 1997-11-27

Application number

SE9704365A

Other languages

English (en)

Swedish (sv)

Other versions

SE9704365L (sv

SE9704365D0 (sv

Inventor

Jan Olof Gustafsson

Anders Klingberg

Original Assignee

Akzo Nobel Nv

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.)

1997-11-27

Filing date

1997-11-27

Publication date

2003-12-23

1997-11-27 Application filed by Akzo Nobel Nv filed Critical Akzo Nobel Nv

1997-11-27 Priority to SE9704365A priority Critical patent/SE521949C2/sv

1997-11-27 Publication of SE9704365D0 publication Critical patent/SE9704365D0/xx

1998-07-02 Priority to BRPI9802339-0A priority patent/BR9802339B1/pt

1998-10-09 Priority to CA2249942A priority patent/CA2249942C/fr

1998-11-25 Priority to US09/199,372 priority patent/US6076682A/en

1999-05-28 Publication of SE9704365L publication Critical patent/SE9704365L/

2003-12-23 Publication of SE521949C2 publication Critical patent/SE521949C2/sv

Links

XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 19
238000000034 method Methods 0.000 title claims abstract description 18
BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 title claims abstract description 9
229910052742 iron Inorganic materials 0.000 title claims abstract description 9
238000005188 flotation Methods 0.000 title claims description 21
239000006260 foam Substances 0.000 title claims description 10
RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 101
229920000768 polyamine Polymers 0.000 claims abstract description 20
125000004432 carbon atom Chemical group C* 0.000 claims abstract description 11
239000000203 mixture Substances 0.000 claims abstract description 9
125000001931 aliphatic group Chemical group 0.000 claims abstract description 5
229910001608 iron mineral Inorganic materials 0.000 claims abstract description 5
-1 ether amines Chemical class 0.000 claims description 21
229910052739 hydrogen Inorganic materials 0.000 claims description 5
239000001257 hydrogen Substances 0.000 claims description 5
125000000217 alkyl group Chemical group 0.000 claims description 4
125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
239000002253 acid Substances 0.000 claims description 3
QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
NARVIWMVBMUEOG-UHFFFAOYSA-N prop-1-en-2-ol Chemical group CC(O)=C NARVIWMVBMUEOG-UHFFFAOYSA-N 0.000 claims 1
239000003795 chemical substances by application Substances 0.000 abstract description 4
230000000881 depressing effect Effects 0.000 abstract 1
238000009291 froth flotation Methods 0.000 abstract 1
QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
229920002472 Starch Polymers 0.000 description 4
229910052681 coesite Inorganic materials 0.000 description 4
229910052906 cristobalite Inorganic materials 0.000 description 4
125000001183 hydrocarbyl group Chemical group 0.000 description 4
239000002245 particle Substances 0.000 description 4
239000000377 silicon dioxide Substances 0.000 description 4
235000012239 silicon dioxide Nutrition 0.000 description 4
239000008107 starch Substances 0.000 description 4
235000019698 starch Nutrition 0.000 description 4
229910052682 stishovite Inorganic materials 0.000 description 4
229910052905 tridymite Inorganic materials 0.000 description 4
229910019142 PO4 Inorganic materials 0.000 description 3
230000001143 conditioned effect Effects 0.000 description 3
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
239000010452 phosphate Substances 0.000 description 3
239000002002 slurry Substances 0.000 description 3
229920002261 Corn starch Polymers 0.000 description 2
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
239000003513 alkali Substances 0.000 description 2
150000001412 amines Chemical class 0.000 description 2
150000001875 compounds Chemical class 0.000 description 2
XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
150000004676 glycans Chemical class 0.000 description 2
229910052500 inorganic mineral Inorganic materials 0.000 description 2
239000000463 material Substances 0.000 description 2
BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
239000011707 mineral Substances 0.000 description 2
229920001282 polysaccharide Polymers 0.000 description 2
239000005017 polysaccharide Substances 0.000 description 2
RMSGQZDGSZOJMU-UHFFFAOYSA-N 1-butyl-2-phenylbenzene Chemical group CCCCC1=CC=CC=C1C1=CC=CC=C1 RMSGQZDGSZOJMU-UHFFFAOYSA-N 0.000 description 1
FZZMTSNZRBFGGU-UHFFFAOYSA-N 2-chloro-7-fluoroquinazolin-4-amine Chemical compound FC1=CC=C2C(N)=NC(Cl)=NC2=C1 FZZMTSNZRBFGGU-UHFFFAOYSA-N 0.000 description 1
OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 description 1
244000215068 Acacia senegal Species 0.000 description 1
229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
229920000896 Ethulose Polymers 0.000 description 1
239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 description 1
IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
229920000084 Gum arabic Polymers 0.000 description 1
229920000569 Gum karaya Polymers 0.000 description 1
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
235000019759 Maize starch Nutrition 0.000 description 1
229920000881 Modified starch Polymers 0.000 description 1
GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
229910004298 SiO 2 Inorganic materials 0.000 description 1
241000934878 Sterculia Species 0.000 description 1
235000010489 acacia gum Nutrition 0.000 description 1
239000000205 acacia gum Substances 0.000 description 1
235000011054 acetic acid Nutrition 0.000 description 1
239000000654 additive Substances 0.000 description 1
150000001298 alcohols Chemical class 0.000 description 1
235000010443 alginic acid Nutrition 0.000 description 1
229920000615 alginic acid Polymers 0.000 description 1
125000003277 amino group Chemical group 0.000 description 1
125000000129 anionic group Chemical group 0.000 description 1
239000000420 anogeissus latifolia wall. gum Substances 0.000 description 1
239000002518 antifoaming agent Substances 0.000 description 1
239000007864 aqueous solution Substances 0.000 description 1
125000003118 aryl group Chemical group 0.000 description 1
125000002511 behenyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
239000001768 carboxy methyl cellulose Substances 0.000 description 1
235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
239000008112 carboxymethyl-cellulose Substances 0.000 description 1
229920002678 cellulose Polymers 0.000 description 1
229920003086 cellulose ether Polymers 0.000 description 1
238000005119 centrifugation Methods 0.000 description 1
230000000295 complement effect Effects 0.000 description 1
239000012141 concentrate Substances 0.000 description 1
230000003750 conditioning effect Effects 0.000 description 1
239000008120 corn starch Substances 0.000 description 1
125000004427 diamine group Chemical group 0.000 description 1
150000004985 diamines Chemical class 0.000 description 1
239000006185 dispersion Substances 0.000 description 1
238000004090 dissolution Methods 0.000 description 1
125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
230000000694 effects Effects 0.000 description 1
229920001971 elastomer Polymers 0.000 description 1
235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 description 1
238000001914 filtration Methods 0.000 description 1
238000005187 foaming Methods 0.000 description 1
235000019253 formic acid Nutrition 0.000 description 1
235000019314 gum ghatti Nutrition 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
235000010494 karaya gum Nutrition 0.000 description 1
239000000231 karaya gum Substances 0.000 description 1
229940039371 karaya gum Drugs 0.000 description 1
125000005644 linolenyl group Chemical group 0.000 description 1
125000005645 linoleyl group Chemical group 0.000 description 1
230000007774 longterm Effects 0.000 description 1
229920000609 methyl cellulose Polymers 0.000 description 1
239000001923 methylcellulose Substances 0.000 description 1
235000010981 methylcellulose Nutrition 0.000 description 1
150000007522 mineralic acids Chemical class 0.000 description 1
235000019426 modified starch Nutrition 0.000 description 1
150000002763 monocarboxylic acids Chemical class 0.000 description 1
125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
238000006386 neutralization reaction Methods 0.000 description 1
230000003472 neutralizing effect Effects 0.000 description 1
125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 1
150000007524 organic acids Chemical class 0.000 description 1
125000005702 oxyalkylene group Chemical group 0.000 description 1
125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
238000001556 precipitation Methods 0.000 description 1
235000019260 propionic acid Nutrition 0.000 description 1
IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
239000005060 rubber Substances 0.000 description 1
238000004062 sedimentation Methods 0.000 description 1
238000005029 sieve analysis Methods 0.000 description 1
125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
238000003756 stirring Methods 0.000 description 1
230000002195 synergetic effect Effects 0.000 description 1
229930195735 unsaturated hydrocarbon Natural products 0.000 description 1

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
- B03D1/004—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
- 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores

Landscapes

Manufacture And Refinement Of Metals (AREA)
Paper (AREA)

SE9704365A 1997-11-27 1997-11-27 Förfarande för skumflotation av silikatinnehållande järnmalm SE521949C2 (sv)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
SE9704365A SE521949C2 (sv)	1997-11-27	1997-11-27	Förfarande för skumflotation av silikatinnehållande järnmalm
BRPI9802339-0A BR9802339B1 (pt)	1997-11-27	1998-07-02	processo para enriquecer um mineral de ferro a partir de um minério de ferro contendo silicato e composição aquosa contendo éter amina.
CA2249942A CA2249942C (fr)	1997-11-27	1998-10-09	Enrichissement du minerai de fer contenant du silicate par traitement de flottation par mousse
US09/199,372 US6076682A (en)	1997-11-27	1998-11-25	Process for froth flotation of silicate-containing iron ore

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE9704365A SE521949C2 (sv)	1997-11-27	1997-11-27	Förfarande för skumflotation av silikatinnehållande järnmalm

Publications (3)

Publication Number	Publication Date
SE9704365D0 SE9704365D0 (sv)	1997-11-27
SE9704365L SE9704365L (sv)	1999-05-28
SE521949C2 true SE521949C2 (sv)	2003-12-23

Family

ID=20409147

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE9704365A SE521949C2 (sv)	1997-11-27	1997-11-27	Förfarande för skumflotation av silikatinnehållande järnmalm

Country Status (4)

Country	Link
US (1)	US6076682A (fr)
BR (1)	BR9802339B1 (fr)
CA (1)	CA2249942C (fr)
SE (1)	SE521949C2 (fr)

Families Citing this family (24)

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Publication number	Priority date	Publication date	Assignee	Title
DE102006010939A1 (de) *	2006-03-09	2007-09-13	Clariant International Limited	Flotationsreagenz für Silikate
DE102006019561A1 (de) *	2006-04-27	2007-10-31	Clariant International Limited	Flotationsreagenz für silikathaltige Mineralien
AU2007338062B2 (en) *	2006-12-22	2012-01-12	Akzo Nobel Chemicals International B.V.	Amine formulations for reverse froth flotation of silicates from iron ore
CA2585065A1 (fr) *	2007-04-13	2008-10-13	Trican Well Service Ltd.	Compositions de boues sablonneuses a particules aqueuses et procedes de preparation
EP2017009B1 (fr) *	2007-07-20	2013-07-03	Clariant (Brazil) S.A.	Flottation inversée de minerai de fer par des collecteurs dans une nanoémulsion aqueuse
BRPI0705593B1 (pt) *	2007-11-22	2016-04-12	Univ Minas Gerais	método de quantificação de aminas em resíduos de flotação de minério de ferro
CN101234367B (zh) *	2008-03-04	2011-04-06	昆明晶石矿冶有限公司	一种菱铁矿浮选捕收剂及其制备方法
DE102010004893A1 (de)	2010-01-19	2011-07-21	Clariant International Limited	Flotationsreagenz für magnetit- und/oder hämatithaltige Eisenerze
US8701892B2 (en)	2010-12-28	2014-04-22	Akzo Nobel Chemicals International B.V.	Amine-containing formulations for reverse froth flotation of silicates from iron ore
CN103476505B (zh)	2011-04-13	2016-01-06	巴斯夫欧洲公司	二胺化合物及其在从铁矿石中反泡沫浮选硅酸盐中的用途
ES2669969T3 (es) *	2011-04-13	2018-05-29	Basf Se	Proceso inverso de flotación por espuma para la separación de silicato del mineral de hierro con compuestos de amina y diamina
CN103476506B (zh) *	2011-04-13	2015-09-02	巴斯夫欧洲公司	胺和二胺化合物及其在从铁矿石中反泡沫浮选硅酸盐中的用途
CN104781010A (zh)	2012-11-30	2015-07-15	阿克佐诺贝尔化学国际公司	从矿石中浮选硅酸盐
CN103691566B (zh) *	2013-12-17	2015-09-09	广西大学	一种从磁选褐铁精矿中浮选分离石榴石的方法
WO2016015109A1 (fr) *	2014-08-01	2016-02-04	Samarco Mineração S.a.	Procédé et composition pour concentration de minerais de fer par flottation de mousse à partir de l'utilisation d'un mélange d'étherdiamine et d'éthermonoamine
CN104148189B (zh) *	2014-08-08	2016-08-17	西北矿冶研究院	一种稀土矿物捕收剂
US10786819B2 (en)	2016-01-21	2020-09-29	Regents Of The University Of Minnesota	Cationic flotation of silica and apatite from oxidized iron ores at natural pH
BR112018077143B1 (pt) *	2016-07-08	2022-12-13	Akzo Nobel Chemicals International B.V	Composição coletora, processo de tratamento de minério de ferro, e polpa
CN109562391B (zh) *	2016-08-26	2021-06-29	埃科莱布美国股份有限公司	用于泡沫浮选的磺化改性剂
CN106423573B (zh) *	2016-10-28	2020-01-10	江西理工大学	一种酯基羟肟酸捕收剂在矿物浮选上的应用方法
CN110022983B (zh)	2016-12-14	2022-03-01	埃科莱布美国股份有限公司	用于泡沫浮选的官能化硅氧烷
EA202190021A1 (ru)	2018-06-19	2021-03-16	Клариант Интернэшнл Лтд	Применение полиолов для усовершенствования способа обратной пенной флотации железной руды
EP3636346A1 (fr) *	2018-10-08	2020-04-15	Nouryon Chemicals International B.V.	Procédé de traitement de minerais et composition collectrice associée
CA3254888A1 (fr)	2022-03-25	2023-09-28	Clariant International Ltd	Nouveaux collecteurs cationiques pour améliorer un procédé de flottation par mousse de silicates

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US3363758A (en) *	1966-12-08	1968-01-16	Ashland Oil Inc	Use of primary aliphatic ether amine acid salts in froth flotation process
BR7706938A (pt) *	1976-10-18	1978-08-08	Akzona Inc	Mistura de pre-emulsao,emulsao aquosa e processo de flotacao com espuma
FR2367820A1 (fr) *	1976-10-18	1978-05-12	Ceca Sa	Procede de flottation de minerais oxydes
US4319987A (en) *	1980-09-09	1982-03-16	Exxon Research & Engineering Co.	Branched alkyl ether amines as iron ore flotation aids
US4472270A (en) *	1983-05-18	1984-09-18	Mobil Oil Corporation	Beneficiation of ores
US4732667A (en) *	1985-02-20	1988-03-22	Berol Kemi Ab	Process and composition for the froth flotation beneficiation of iron minerals from iron ores
US4830739A (en) *	1985-02-20	1989-05-16	Berol Kemi Ab	Process and composition for the froth flotation beneficiation of iron minerals from iron ores
US5182039A (en) *	1991-03-29	1993-01-26	Exxon Chemical Patents, Inc.	Synergistic fluorinated ore flotation aids
DE4133063A1 (de) *	1991-10-04	1993-04-08	Henkel Kgaa	Verfahren zur herstellung von eisenerzkonzentraten durch flotation
US5540337A (en) *	1994-04-04	1996-07-30	Baker Hughes Incorporated	Alkyloxyalkaneamines useful as cationic froth flotation collectors
CA2205885A1 (fr) *	1996-06-04	1997-12-04	Witco Corporation	Melanges d'acides carboxyliques et d'amines organiques pour la flottation de minerai

1997
- 1997-11-27 SE SE9704365A patent/SE521949C2/sv not_active IP Right Cessation
1998
- 1998-07-02 BR BRPI9802339-0A patent/BR9802339B1/pt not_active IP Right Cessation
- 1998-10-09 CA CA2249942A patent/CA2249942C/fr not_active Expired - Fee Related
- 1998-11-25 US US09/199,372 patent/US6076682A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
SE9704365L (sv)	1999-05-28
SE9704365D0 (sv)	1997-11-27
CA2249942C (fr)	2010-09-21
BR9802339A (pt)	1999-08-03
US6076682A (en)	2000-06-20
CA2249942A1 (fr)	1999-05-27
BR9802339B1 (pt)	2011-04-19

Legal Events

Date	Code	Title	Description
2018-01-02	NUG	Patent has lapsed

Publication	Publication Date	Title
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