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EP1996333A1 - Flotation reagent for silicates - Google Patents

Flotation reagent for silicates

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Publication number
EP1996333A1
EP1996333A1 EP07722940A EP07722940A EP1996333A1 EP 1996333 A1 EP1996333 A1 EP 1996333A1 EP 07722940 A EP07722940 A EP 07722940A EP 07722940 A EP07722940 A EP 07722940A EP 1996333 A1 EP1996333 A1 EP 1996333A1
Authority
EP
European Patent Office
Prior art keywords
silicate
flotation
alkyl ether
use according
collector
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP07722940A
Other languages
German (de)
French (fr)
Other versions
EP1996333B1 (en
Inventor
Klaus-Ulrich Pedain
Tobias Rau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clariant International Ltd
Original Assignee
Clariant International Ltd
Clariant Finance BVI Ltd
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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
    • B03D1/001—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
    • B03D1/0043—Organic compounds modified so as to contain a polyether group
    • 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
    • B03D2201/04—Frothers
    • 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
    • B03D2203/04—Non-sulfide ores

Definitions

  • the present invention relates to the use of collectors in the flotation treatment of silicate-containing minerals and ores, in particular iron ore with the aid of fatty alkyl ether alkylamine alkoxylate.
  • silicates are naturally occurring ores and minerals.
  • these include calcite, phosphate ore and feldspar.
  • the silicate content reduces the quality of the iron ore and interferes with iron production.
  • the iron ore is separated from the silicate in addition to the magnetic separation by inverse flotation.
  • the ground iron ore is brought together in a flotation cell with water and flotation reagents, wherein the silicate is discharged through the use of a collector with the foam, while the iron ore remains back in the so-called pulp.
  • fatty amines alkyl ether amines and alkyl ether diamines are used as silicate collectors. These are known under the trade name Flotigam ®.
  • Alkyl ether amines and alkyl ether diamines are mostly used in their partially neutralized forms as partial acetates as described in US Pat. No. 4,319,987. The reason for this is the better solubility of the partially neutralized amine functions.
  • silicate flotation collectors described in the prior art show insufficient selectivity and yield.
  • the object of the present invention was therefore to provide an improved collector for the silicate flotation.
  • the invention thus relates to the use of a compound of the formula (I)
  • R 1 is a hydrocarbon group having 1 to 40 carbon atoms
  • R 2 is an aliphatic hydrocarbon group having 2 to 4 carbon atoms
  • R 3 is an alkoxy group
  • n is a number between 1 and 50
  • m is 1 or 2
  • Another object of the invention is a method for flotation of silicate-containing mineral by bringing the flotation reagent according to the invention with the silicate-containing mineral in contact.
  • the invention furthermore relates to a composition comprising 1 to 99% by weight of a silicate flotation collector which is an alkyl ether amine, alkyl ether diamine, alkylamine or quaternary ammonium salt and 1 to 99% by weight of a compound of the formula I.
  • the ratio of alkyletheramine, alkyletherdiamine, alkylamine or quaternary ammonium salt to the compound of formula I is preferably between 98: 2 and 75:25.
  • R 1 is an aliphatic hydrocarbon group. It is further preferred that R 1 comprises 4 to 22, in particular 6 to 20, and especially 8 to 14 carbon atoms. Particularly preferred are 2-ethylhexyl, Isononan-, Isodekan- and Isotridekanreste.
  • R 2 is a C 2 H 4 - or a C 3 H 6 -GmPPe.
  • R 3 is a C 2 -C 4 -alkoxy group, in particular an ethoxy or propoxy group. R 3 may also stand for a mixed alkoxy group.
  • n is a number between 2 and 40.
  • n stands for 2.
  • silicate float collectors which are an alkyl ether amine, alkyl ether diamine, alkyl amine or quaternary ammonium salt, and those with A compound of formula I can be used together, it is preferably one or more of the compounds of formulas (II) to (V).
  • R 4 is a hydrocarbon group of 1-40, preferably 8 to 32 carbon atoms and R 5 is an aliphatic hydrocarbon group of 2-4 carbon atoms;
  • R 6 corresponds to a hydrocarbon group of 1-40, preferably 8 to 32 carbon atoms
  • R 7 and R 8 correspond to one or more aliphatic hydrocarbon group having 2 to 4 carbon atoms
  • R 9 , R 10 , R 11 and R 12 correspond to one or more hydrocarbon groups of 1 to 22 carbon atoms and A " corresponds to a suitable anion;
  • R 13 corresponds to a hydrocarbon group having 1-40, preferably 8 to 32 carbon atoms.
  • the use of the flotation reagent according to the invention can also be carried out in combination with foaming agents and pushers, as known from the prior art.
  • hydrophilic polysaccharides such as modified starch, carboxymethylcellulose, or gum arabic are added in dosages of 10 to 1000 g / t as a pusher.
  • the silicate flotation is preferably carried out at a pH of 7-12, in particular 8-11, which is for example adjusted with sodium hydroxide.
  • the following table represents the flotative results of the collector according to the invention in comparison to the standard reagent. Flotation experiments have been carried out on a siliceous iron ore.
  • Table 1 Effectiveness of the collector B according to the invention in comparison to the standard collector A.
  • the results show a consistently increased percentage application with an approximately constant Fe content by the Flotationsreagenz B according to the invention over the standard collector A.
  • the mixture C consisting of 10% of the inventive collector B and 90% of the standard collector A, shows a significantly increased Application to the standard collector A.
  • the flotation reagent according to the invention is applicable in a wide pH range, for example 7 to 12, preferably 8 to 11, and is added to the aqueous pulp in a concentration of preferably between 0.001 and 1.0 kg / ton of crude mineral.

Landscapes

  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention relates to the use of a compound of the formula (I) R<SUP>1</SUP>-O-R<SUP>2</SUP>-NH<SUB>(2-m)</SUB>-[(R<SUP>3</SUP>)n-H]<SUB>m</SUB> (l), where R<SUP>1</SUP> is a hydrocarbon group having 1 - 40 carbon atoms, R<SUP>2</SUP> is an aliphatic hydrocarbon group having 2 - 4 carbon atoms and R<SUP>3</SUP> is an alkoxy group, n is in the range from 1 to 50 and m is 1 or 2, as flotation reagent in silicate flotation.

Description

Beschreibungdescription
Flotationsreagenz für SilikateFlotation reagent for silicates
Die vorliegende Erfindung betrifft die Verwendung von Sammlern in der flotativen Aufbereitung von silikathaltigen Mineralen und Erzen, insbesondere Eisenerz mit Hilfe von Fettalkyletheralkylaminalkoxylat.The present invention relates to the use of collectors in the flotation treatment of silicate-containing minerals and ores, in particular iron ore with the aid of fatty alkyl ether alkylamine alkoxylate.
Viele natürlich vorkommende Erze und Mineralien enthalten Silikat als unerwünschtes Begleitmineral. Hierzu zählen neben Eisenerz Calcit, Phosphaterz und Feldspat. Insbesondere beim Eisenerz mindert der Silikatgehalt die Qualität des Eisenerzes und stört bei der Eisenherstellung. Um hochqualitatives Eisenerz zu gewinnen, ist es von Interesse, den Silikatgehalt des Eisenerzes auf unter 2 % zu senken, üblicherweise wird das Eisenerz neben der magnetischen Separierung durch inverse Flotation vom Silikat getrennt. Hierzu wird das aufgemahlene Eisenerz in einer Flotationszelle mit Wasser und Flotationsreagenzien zusammengebracht, wobei das Silikat durch den Einsatz eines Sammlers mit dem Schaum ausgetragen wird, während das Eisenerz zurück in der so genannten Trübe verbleibt.Many naturally occurring ores and minerals contain silicate as an undesirable companion mineral. In addition to iron ore, these include calcite, phosphate ore and feldspar. Especially with iron ore, the silicate content reduces the quality of the iron ore and interferes with iron production. In order to obtain high-quality iron ore, it is of interest to reduce the silicate content of the iron ore to below 2%, usually the iron ore is separated from the silicate in addition to the magnetic separation by inverse flotation. For this purpose, the ground iron ore is brought together in a flotation cell with water and flotation reagents, wherein the silicate is discharged through the use of a collector with the foam, while the iron ore remains back in the so-called pulp.
Als Silikatsammler werden beispielsweise Fettamine, Alkyletheramine und Alkyletherdiamine eingesetzt. Diese sind unter dem Handelsnamen Flotigam® bekannt.For example, fatty amines, alkyl ether amines and alkyl ether diamines are used as silicate collectors. These are known under the trade name Flotigam ®.
Alkyletheramine und Alkyletherdiamine werden zumeist in deren teilneutralisierten Formen als Teilacetate eingesetzt wie in US-4 319 987 beschrieben. Grund hierfür ist die bessere Löslichkeit der teilneutralisierten Aminfunktionen.Alkyl ether amines and alkyl ether diamines are mostly used in their partially neutralized forms as partial acetates as described in US Pat. No. 4,319,987. The reason for this is the better solubility of the partially neutralized amine functions.
US-6 076 682 beschreibt die kombinierte Verwendung von Alkylethermonoamin mit Alkyletherdiamin zur Silikatflotation aus Eisenerz.US Pat. No. 6,076,682 describes the combined use of alkylethermonoamine with alkyletherdiamine for the silicate flotation of iron ore.
In WO 00/62937 wird die Verwendung quaternärer Amine zur Flotation von Eisenerz offenbart. In WO-93/06935 wird die synergistische Wirkung von Etheraminen und anionischen Sammlern zur Eisenerzflotation beschrieben.WO 00/62937 discloses the use of quaternary amines for flotation of iron ore. WO-93/06935 describes the synergistic effect of ether amines and anionic collectors for iron ore floatation.
Die Silikatflotation, u.a. aus Eisenerz, unter Zuhilfenahme von Alkyloxyalkanaminen wird in US-5 540 337 beschrieben.The silicate flotation, u.a. from iron ore with the aid of alkyloxyalkanamines is described in US-5,540,337.
Die im Stand der Technik beschriebenen Sammler für die Silikatflotation zeigen jedoch unzureichende Selektivität und Ausbeute. Aufgabe vorliegender Erfindung war es daher, einen verbesserten Sammler für die Silikatflotation bereitzustellen.However, the silicate flotation collectors described in the prior art show insufficient selectivity and yield. The object of the present invention was therefore to provide an improved collector for the silicate flotation.
Überraschenderweise wurde gefunden, dass die Verwendung von Fettalkyletheralkylaminalkoxylaten zu einer deutlichen Verbesserung der Silikatflotation aus Eisenerz gegenüber den bekannten Flotationsreagenzien führt.Surprisingly, it has been found that the use of fatty alkyl ether alkylamine alkoxylates leads to a marked improvement in the silicate flotation of iron ore over the known flotation reagents.
Gegenstand der Erfindung ist somit die Verwendung einer Verbindung der Formel (I)The invention thus relates to the use of a compound of the formula (I)
R1-O-R2-NH(2.m)-[(R3)n-H]m (l)R 1 -OR 2 -NH (2 m.) - [(R 3) n -H] m (l)
worin R1 einer Kohlenwasserstoffgruppe mit 1 - 40 Kohlenstoffatomen, R2 einer aliphatischen Kohlenwasserstoffgruppe mit 2 - 4 Kohlenstoffatomen sowie R3 einer Alkoxygruppe entsprechen, n eine Zahl zwischen 1 und 50 sowie m 1 oder 2 sind, als Flotationsreagenz in der Silikatflotation.wherein R 1 is a hydrocarbon group having 1 to 40 carbon atoms, R 2 is an aliphatic hydrocarbon group having 2 to 4 carbon atoms and R 3 is an alkoxy group, n is a number between 1 and 50 and m is 1 or 2, as a flotation reagent in the silicate flotation.
Der erfindungsgemäße Sammler kann alleine oder in Kombination mit anderen stickstoffhaltigen Verbindungen für die Flotation von Silikat, insbesondere aus Eisenerz oder Calcit verwendet werden. Bevorzugte stickstoffhaltige Verbindungen sind Alkyletheramine, Alkyletherdiamine, Alkylamine oder quaternäre Ammoniumsalze.The collector according to the invention can be used alone or in combination with other nitrogen-containing compounds for the flotation of silicate, in particular iron ore or calcite. Preferred nitrogen-containing compounds are alkyl ether amines, alkyl ether diamines, alkyl amines or quaternary ammonium salts.
Ein weiterer Gegenstand der Erfindung ist ein Verfahren zur Flotation von silikathaltigem Mineral, indem man das erfindungsgemäße Flotationsreagenz mit dem silikathaltigen Mineral in Kontakt bringt. Ein weiterer Gegenstand der Erfindung ist eine Zusammensetzung, enthaltend 1 bis 99 Gew.-% eines Sammlers für die Silikatflotation, welcher ein Alkyletheramin, Alkyletherdiamin, Alkylamin oder quaternäres Ammoniumsalz ist, sowie 1 bis 99 Gew.-% einer Verbindung der Formel I.Another object of the invention is a method for flotation of silicate-containing mineral by bringing the flotation reagent according to the invention with the silicate-containing mineral in contact. The invention furthermore relates to a composition comprising 1 to 99% by weight of a silicate flotation collector which is an alkyl ether amine, alkyl ether diamine, alkylamine or quaternary ammonium salt and 1 to 99% by weight of a compound of the formula I.
Das Verhältnis von Alkyletheramin, Alkyletherdiamin, Alkylamin oder quaternärem Ammoniumsalz zur Verbindung der Formel I liegt vorzugsweise zwischen 98:2 und 75:25.The ratio of alkyletheramine, alkyletherdiamine, alkylamine or quaternary ammonium salt to the compound of formula I is preferably between 98: 2 and 75:25.
In einer bevorzugten Ausführungsform steht R1 für eine aliphatische Kohlenwasserstoffgruppe. Weiterhin bevorzugt ist, dass R1 4 bis 22, insbesondere 6 bis 20, und speziell 8 bis 14 Kohlenstoffatome umfasst. Besonders bevorzugt sind 2-Ethylhexyl-, Isononan-, Isodekan- und Isotridekanreste.In a preferred embodiment, R 1 is an aliphatic hydrocarbon group. It is further preferred that R 1 comprises 4 to 22, in particular 6 to 20, and especially 8 to 14 carbon atoms. Particularly preferred are 2-ethylhexyl, Isononan-, Isodekan- and Isotridekanreste.
In einer weiteren bevorzugten Ausführungsform steht R2 für eine C2H4- oder eine C3H6-GmPPe.In a further preferred embodiment, R 2 is a C 2 H 4 - or a C 3 H 6 -GmPPe.
In einer weiteren bevorzugten Ausführungsform steht R3 für eine C2-C4- Alkoxygruppe, insbesondere für eine Ethoxy- oder Propoxygruppe. R3 kann auch für eine gemischte Alkoxygruppe stehen.In a further preferred embodiment, R 3 is a C 2 -C 4 -alkoxy group, in particular an ethoxy or propoxy group. R 3 may also stand for a mixed alkoxy group.
In einer weiteren bevorzugten Ausführungsform steht n für eine Zahl zwischen 2 und 40.In a further preferred embodiment, n is a number between 2 and 40.
In einer weiteren bevorzugten Ausführungsform steht m für 2.In a further preferred embodiment, m stands for 2.
Eine besonders bevorzugte Ausführungsform der Erfindung ist eine Verbindung der Formel 1 , worin R1 ein Isotridekanrest, R2 C3H6, R3 C2H4-O, n 2 bis 10 und m gleich 2 ist.A particularly preferred embodiment of the invention is a compound of formula 1, wherein R 1 is an isotridekanrest, R 2 C 3 H 6 , R 3 is C 2 H 4 -O, n is 2 to 10 and m is 2.
Bei den Sammlern für die Silikatflotation, welche ein Alkyletheramin, Alkyletherdiamin, Alkylamin oder quaternäres Ammoniumsalz sind, und die mit einer Verbindung der Formel I zusammen verwendet werden können, handelt es sich vorzugsweise um eine oder mehrere der Verbindungen der Formeln (II) bis (V).In the silicate float collectors, which are an alkyl ether amine, alkyl ether diamine, alkyl amine or quaternary ammonium salt, and those with A compound of formula I can be used together, it is preferably one or more of the compounds of formulas (II) to (V).
Diese Verbindungen sindThese connections are
R4-O-R5-NH2 (II)R 4 -OR 5 -NH 2 (II)
worin R4 einer Kohlenwasserstoffgruppe mit 1 - 40, vorzugsweise 8 bis 32 Kohlenstoffatomen und R5 einer aliphatischen Kohlenwasserstoffgruppe mit 2 - 4 Kohlenstoffatomen entsprechen;wherein R 4 is a hydrocarbon group of 1-40, preferably 8 to 32 carbon atoms and R 5 is an aliphatic hydrocarbon group of 2-4 carbon atoms;
R6-O-R7-NH-R8-NH2 (III)R 6 -OR 7 -NH-R 8 -NH 2 (III)
worin R6 einer Kohlenwasserstoffgruppe mit 1 - 40, vorzugsweise 8 bis 32 Kohlenstoffatomen, R7 und R8 einer oder verschiedenen aliphatischen Kohlenwasserstoffgruppe mit 2 - 4 Kohlenstoffatomen entsprechen;wherein R 6 corresponds to a hydrocarbon group of 1-40, preferably 8 to 32 carbon atoms, R 7 and R 8 correspond to one or more aliphatic hydrocarbon group having 2 to 4 carbon atoms;
(R9R10NR11R12J+ A- (IV)(R 9 R 10 NR 11 R 12 J + A- (IV)
worin R9, R10, R11 und R12 einer oder verschiedenen Kohlenwasserstoffgruppen mit 1 - 22 Kohlenstoffatomen und A" einem geeigneten Anion entsprechen;wherein R 9 , R 10 , R 11 and R 12 correspond to one or more hydrocarbon groups of 1 to 22 carbon atoms and A " corresponds to a suitable anion;
R13-NH2 (V)R 13 -NH 2 (V)
worin R13 einer Kohlenwasserstoffgruppe mit 1 - 40, vorzugsweise 8 bis 32 Kohlenstoffatomen entspricht.wherein R 13 corresponds to a hydrocarbon group having 1-40, preferably 8 to 32 carbon atoms.
Die Verwendung des erfindungsgemäßen Flotationsreagenzes kann auch in Kombination mit Schäumern und Drückern, wie sie aus dem Stand der Technik bekannt sind, erfolgen. Um zu vermeiden; dass bei der Silikatflotation Eisenerz mit ausgetragen wird, werden vorzugsweise hydrophile Polysaccharide, wie beispielsweise modifizierte Stärke, Carboxymethylcellulose, oder Gummi Arabicum in Dosierungen von 10 bis 1000 g/t als Drücker zugegeben. Die Silikatflotation wird vorzugsweise bei einem pH von 7 -12, insbesondere 8 - 11 durchgeführt, welcher beispielsweise mit Natriumhydroxid eingestellt wird.The use of the flotation reagent according to the invention can also be carried out in combination with foaming agents and pushers, as known from the prior art. In order to avoid; that iron ore is discharged in the silicate flotation, preferably hydrophilic polysaccharides, such as modified starch, carboxymethylcellulose, or gum arabic are added in dosages of 10 to 1000 g / t as a pusher. The silicate flotation is preferably carried out at a pH of 7-12, in particular 8-11, which is for example adjusted with sodium hydroxide.
BeispieleExamples
Die folgende Tabelle stellt die flotativen Ergebnisse des erfindungsgemäßen Sammlers im Vergleich zum Standardreagenz dar. Es sind Flotationsversuche an einem silikathaltigen Eisenerz durchgeführt worden.The following table represents the flotative results of the collector according to the invention in comparison to the standard reagent. Flotation experiments have been carried out on a siliceous iron ore.
Als Standardreagenz (Vergleichsbeispiele 1 (V) bis 3(V)) wurde ein C10- Alkyloxypropylamin, welches einer Verbindung der Formel (II) entspricht, wobei R4 für eine Decylgruppe und R5 für eine Propylgruppe stehen, verwendet. Der erfindungsgemäße Sammler B (Beispiele 4 bis 7) entspricht dem erfindungsgemäßen Reagenz der Formel (I), worin R1 Ci3-Alkyl, R2 Propyl und R3 Ethoxy, sowie m gleich 2 und n gleich 5 ist. Die Beispiele 8 bis 10 stellen den mit der gleichzeitigen Verwendung von erfindungsgemäßem Sammler und Sammler des Standes der Technik verbundenen synergistischen Effekt dar, wobei Sammler C eine Mischung aus 10 % Sammler B und 90 % des Standardsammlers A entspricht. Der Gehalt des Roherzes lag bei 65,7 % Fe.As a standard reagent (Comparative Examples 1 (V) to 3 (V)), a C 10 -alkyloxypropylamine corresponding to a compound of the formula (II) wherein R 4 is a decyl group and R 5 is a propyl group was used. The collector according to the invention B (Examples 4 to 7) corresponding to the reagent of the formula (I) of the invention wherein R 1 Ci 3 alkyl, R 2 is propyl and R 3 is ethoxy, and m is 2 and n is equal to 5. Examples 8-10 illustrate the synergistic effect associated with the simultaneous use of the prior art collector and accumulator of the present invention wherein collector C corresponds to a mixture of 10% collector B and 90% of standard collector A. The content of crude ore was 65.7% Fe.
Tabelle 1 : Wirksamkeit des erfindungsgemäßen Sammlers B im Vergleich zum Standardsammler ATable 1: Effectiveness of the collector B according to the invention in comparison to the standard collector A.
Die Ergebnisse zeigen ein durchgängig gesteigertes prozentuales Ausbringen bei einem etwa gleich bleibenden Fe-Gehalt durch das erfindungsgemäße Flotationsreagenz B gegenüber dem Standardsammler A. Auch die Mischung C, bestehend aus 10 % des erfindungsgemäßen Sammlers B und 90 % des Standardsammlers A, zeigt ein deutlich gesteigertes Ausbringen gegenüber dem Standardsammler A. The results show a consistently increased percentage application with an approximately constant Fe content by the Flotationsreagenz B according to the invention over the standard collector A. The mixture C, consisting of 10% of the inventive collector B and 90% of the standard collector A, shows a significantly increased Application to the standard collector A.
Das erfindungsgemäße Flotationsreagenz ist in einem weiten pH Bereich anwendbar beispielsweise 7 bis 12, vorzugsweise 8 bis 11 und wird der wässrigen Trübe in einer Konzentration zwischen vorzugsweise 0,001 und 1 ,0 kg/Tonne Rohmineral zugesetzt.The flotation reagent according to the invention is applicable in a wide pH range, for example 7 to 12, preferably 8 to 11, and is added to the aqueous pulp in a concentration of preferably between 0.001 and 1.0 kg / ton of crude mineral.
Mit dem erfindungsgemäßen Flotationsreagenz wird gegenüber den Sammlern des Standes der Technik eine signifikante Verbesserung von Ausbringen und Selektivität erreicht. Die Beispiele 1 bis 10 zeigen, dass das Fe-Ausbringen deutlich höher ist als mit dem entsprechenden Standardreagenz. With the flotation reagent according to the invention, a significant improvement in spreading and selectivity is achieved compared to the collectors of the prior art. Examples 1 to 10 show that Fe deposition is significantly higher than with the corresponding standard reagent.

Claims

Patentansprüche: claims:
1. Verwendung einer Verbindung der Formel (I)1. Use of a compound of the formula (I)
R1-O-R2-NH(2-mr[(R3)n-H]m (l)R 1 -OR 2 -NH (2 - mr [(R 3 ) n H] m (I)
worin R1 einer Kohlenwasserstoffgruppe mit 1 - 40 Kohlenstoffatomen, R2 einer aliphatischen Kohlenwasserstoffgruppe mit 2 - 4 Kohlenstoffatomen sowie R3 einer Alkoxygruppe entsprechen, n eine Zahl zwischen 1 und 50 sowie m 1 oder 2 sind, als Flotationsreagenz in der Silikatflotation.wherein R 1 is a hydrocarbon group having 1 to 40 carbon atoms, R 2 is an aliphatic hydrocarbon group having 2 to 4 carbon atoms and R 3 is an alkoxy group, n is a number between 1 and 50 and m is 1 or 2, as a flotation reagent in the silicate flotation.
2. Verwendung nach Anspruch 1 , wobei R1 ein aliphatischer Kohlenwasserstoff rest mit 8 bis 14 Kohlenstoffatomen ist.2. Use according to claim 1, wherein R 1 is an aliphatic hydrocarbon radical having 8 to 14 carbon atoms.
3. Verwendung nach Anspruch 1 und/oder 2, wobei R1 ein 2-Ethylhexan-, Isononan-, Isodekan- oder Isotridekanrest ist.3. Use according to claim 1 and / or 2, wherein R 1 is a 2-ethylhexane, Isononan-, Isodekan- or Isotridekanrest.
4. Verwendung gemäß einem oder mehreren der Ansprüche 1 bis 3, worin R1 ein Isotridekanrest, R2 C3H6, R3 C2H4-O, n 2 bis 10 und m gleich 2 ist.4. Use according to one or more of claims 1 to 3, wherein R 1 is an Isotridekanrest, R 2 C 3 H 6 , R 3 C 2 H 4 -O, n is 2 to 10 and m is 2.
5. Verwendung gemäß einem oder mehreren der Ansprüche 1 bis 4 zur Flotation von Silikat aus Eisenerz in Kombination mit einem anderen stickstoffhaltigen Silikatsammler bei einem pH von 7-12, worin der weitere Sammler ausgewählt ist aus der Gruppe der Alkyletheramine, Alkyletherdiamine, Alkylamine oder quaternären Ammoniumsalzen.5. Use according to one or more of claims 1 to 4 for the flotation of silicate from iron ore in combination with another nitrogen-containing silicate collector at a pH of 7-12, wherein the further collector is selected from the group of alkyl ether amines, alkyl ether diamines, alkylamines or quaternary ammonium salts.
6. Verwendung gemäß einem oder mehreren der Ansprüche 1 bis 5 zur Anreicherung von Eisenerz.6. Use according to one or more of claims 1 to 5 for the enrichment of iron ore.
7. Verwendung gemäß einem oder mehreren der Ansprüche 1 bis 5 bei der Flotation von Silikat aus Eisenerz, Calcit, Phosphaterz und Feldspat. 7. Use according to one or more of claims 1 to 5 in the flotation of silicate of iron ore, calcite, phosphate ore and feldspar.
8. Verwendung gemäß einem oder mehreren der Ansprüche 1 bis 5 bei der Flotation von Silikat, wobei das Erz zwischen 0 und 90 % Silikat enthält.8. Use according to one or more of claims 1 to 5 in the flotation of silicate, wherein the ore contains between 0 and 90% silicate.
9. Verwendung des Flotationsreagenzes gemäß einem oder mehreren der Ansprüche 1 bis 5 in Kombination mit Schäumern und Drückern.9. Use of the Flotationsreagenzes according to one or more of claims 1 to 5 in combination with foaming agents and pushers.
10. Verwendung des Flotationsreagenzes gemäß einem oder mehreren der Ansprüche 1 bis 5 in einem pH-Bereich von 7 bis 12.10. Use of the Flotationsreagenzes according to one or more of claims 1 to 5 in a pH range of 7 to 12.
11. Verwendung des Flotationsreagenzes gemäß einem oder mehreren der Ansprüche 1 bis 5 in Mengen von 0,001 bis 1 ,0 kg pro Tonne Roherz.11. Use of the Flotationsreagenzes according to one or more of claims 1 to 5 in amounts of 0.001 to 1, 0 kg per ton of raw ore.
12. Zusammensetzung, enthaltend 1 bis 99 Gew.-% eines Sammlers für die Silikatflotation, welcher ein Alkyletheramin, Alkyletherdiamin, Alkylamin oder quatemäres Ammoniumsalz ist, sowie 1 bis 99 Gew.-% einer Verbindung der Formel I. 12. A composition comprising 1 to 99% by weight of a silicate flotation collector which is an alkyl ether amine, alkyl ether diamine, alkyl amine or quaternary ammonium salt and 1 to 99% by weight of a compound of the formula I.
EP07722940.9A 2006-03-09 2007-02-26 Flotation reagent for silicates Not-in-force EP1996333B1 (en)

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DE102006010939A DE102006010939A1 (en) 2006-03-09 2006-03-09 Flotation reagent for silicates
PCT/EP2007/001628 WO2007101575A1 (en) 2006-03-09 2007-02-26 Flotation reagent for silicates

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BR (1) BRPI0708724A2 (en)
CA (1) CA2645156C (en)
DE (1) DE102006010939A1 (en)
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EP1996333B1 (en) 2013-04-17
NO20083886L (en) 2008-09-10
RU2426597C2 (en) 2011-08-20
AU2007222691B2 (en) 2010-09-16
DE102006010939A1 (en) 2007-09-13
US8205753B2 (en) 2012-06-26
RU2008140181A (en) 2010-04-20
WO2007101575A1 (en) 2007-09-13
AU2007222691A1 (en) 2007-09-13
ZA200807347B (en) 2009-07-29
US20090114573A1 (en) 2009-05-07
CA2645156A1 (en) 2007-09-13
CA2645156C (en) 2014-01-14

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