CA2483165A1 - Use of fatty amine salts in combination with fatty acids as reagents for the flotation of potash salts (sylvinite) - Google Patents
Use of fatty amine salts in combination with fatty acids as reagents for the flotation of potash salts (sylvinite) Download PDFInfo
- Publication number
- CA2483165A1 CA2483165A1 CA002483165A CA2483165A CA2483165A1 CA 2483165 A1 CA2483165 A1 CA 2483165A1 CA 002483165 A CA002483165 A CA 002483165A CA 2483165 A CA2483165 A CA 2483165A CA 2483165 A1 CA2483165 A1 CA 2483165A1
- Authority
- CA
- Canada
- Prior art keywords
- flotation
- salts
- sylvinite
- carbon atoms
- reagents
- 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.)
- Abandoned
Links
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
- B03D1/008—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
- 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
- B03D2203/10—Potassium ores
Landscapes
- Degasification And Air Bubble Elimination (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Paper (AREA)
- Lubricants (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Detergent Compositions (AREA)
Abstract
The invention relates to a composition that is effective for use as a flotation auxiliary agent, containing: A) at least one compound of formula [R1 - NH3]+ X-, wherein R1 represents a C8 to C22 alkyl radical and X- represents an anion, and; B) a branched fatty acid having a chain length of between 8 and 22 C atoms.
Description
Description Use of fatty amine salts in combination with fatty acids as reagents for the flotation of potash salts (sylvinite) The present invention relates to the use of amine salts in combination with fatty acids as flotation reagents in the production of sylvinite, and also to a corresponding reagent.
In the production of sylvinite from crude potash salts which occur, for example, in Germany, Belarus, CIS, Canada and the United States of America, it is necessary in some cases to remove foreign minerals, such as clays, dolomite, anhydride, hematite and other materials, preferably upstream of the flotation separation of sylvinite, from other crude potash salt components. The removal of foreign materials which are customarily termed slimes or insoluble fractions, is carried out by flotation. In flotation processes a crude salt pulp is customarily first subjected to a scrubbing operation to release the insoluble fractions, which are termed hereinafter insoluble fractions, and the cleaned crude salt pulp is then conditioned using one or more reagents which promote the removal of the insoluble fractions. The conditioned pulp is subjected to a froth separation, which removes a part of the insoluble constituents. Flocculants can be used to improve the separation. After the partial removal of the insoluble fractions, customarily an additive (blinding agent) is added to the crude salt pulp to inactivate residues of the insoluble fractions, conditioned with reagents and subjected to the froth separation for production of sylvinite and other crude potash salt components.
Because of numerous advantages, the flotation process for separating potash salt mixtures of natural or industrial origin to form intermediates or potash fertilizers by means of fatty amine collectors is widespread. By adding the fatty amine or salts thereof to the flotation pulp, the mineral component of value becomes hydrophobic and thus capable of being discharged in enriched form in the concentrate and isolated. Obviously, the chemical constitution of the collector, its preparation and the conditions of its metering have the greatest effect on its adsorption and thus on its action. Generally, primary fatty amines are used. In mixtures with these amines, short-chain alkylamines are used, for example as are present in cocoamine.
DD-B-154 960 discloses a fatty amine for the flotation of potash salts which has virtually saturated alkylamines produced from natural or synthetic starting substances in a ratio of the chain length fragments of C16~C18~C20=C22 such as from 10 to 25: from 55 to 70: from 4 to 10: from 5 to 20, preferably 15:65:5:10, and has a content of at least 92% primary amines.
US-4 045 335 discloses a process for the flotation of langbeinite and kieserite in which a reagent is used which, in addition to a fatty amine, preferably tallow fatty amine, also contains oleic acid or decanedioic acid.
It was an object of the present invention to provide a flotation reagent which enhances the KCI recovery in sylvinite flotation without decreasing the concentrate quality.
Surprisingly, it has been found that a mixture of a primary alkylamine salt and a branched fatty acid significantly enhances the flotation recovery compared with conventional collectors. The KCI content of the resultant concentrate produced is not decreased by the higher activity of the novel collector.
The invention thus relates to the use of a mixture of A) at least one compound of the formula [R~-NH3]+X
where R~ is a Cg-C22 alkyl radical and X is an anion, and B) a branched fatty acid having a chain length of 8 to 22 carbon atoms as collector in sylvinite flotation.
The invention further relates to a process for the flotation of sylvinite, in which the abovedescribed composition is added as collector to the flotation pulp.
The invention further relates to a composition effective as flotation reagent comprising A) at least one compound of the formula [R~-NH3]+X
where R~ is a Cg-C22 alkyl radical and X is an anion, and B) a branched fatty acid having a chain length of 8 to 22 carbon atoms.
Substituent A of the inventive composition preferably comprises a radical R~ having a chain length of 12 to 20, in particular 16 to 20, especially 18, carbon atoms. X can be any desired anion, but is preferably a chloride, formate, or acetate anion. A particularly preferred substituent A is stearylamine acetate.
Constituent B of the inventive composition is preferably a branched carboxylic acid having 14 to 22 carbon atoms, in particular isostearic acid.
The preferred mixing ratio of A:B is 90:10 to 10:90, in particular 75:25 to 25:75. In a further embodiment, the constituents A and B total 100% by weight.
For simplified handling of the inventive composition, this can be formulated with solvents. Suitable solvents are glycols, in particular butyl polygiycol, the residues from oxoalcohol synthesis, and also if appropriate water as minor constituent.
Residues from oxoalcohol synthesis preferably have the following composition:
Concentration range Constituent (% by weight) Di-2-ethylhexyl ether 10-25 2-Ethylhexanoic acid 2-ethylhexyl 10-25 ester Cog lactones 4-20 2-Ethylhexyl butyrate 3-10 2-Ethylhexane-(1,3)-diol mono-n-butyrate5-15 2-Ethythexano) 4-9 0 C4 to Cg acetals 2-10 2-Ethylhexane-( 1,3)-diol 2-5 Ethers and esters ~ C2p 0-20 In a further embodiment of the invention the inventive compositions are used in a mixture with quaternary ammonium salts. Such salts have the formula [NRZR3R4R5J~X~, where R2, R3, R4 and R5 are alkyl radicals having 1 to 18 carbon atoms. Preferably, one of the radicals R~ to R5 is a short-chain radical, for example methyl or ethyl, and the other radicals are tong-chain radicals having 8 to 1 B carbon atoms, Two short-chain radicals can also be combined with 2 long-chain radicals. Suitable anions X are chloride and sulfate.
In a further embodiment of the invention the inventive compositions are used in a mixture with ether propyleneamines. of the fvrrnula RB-O-(CH2)g-NHS andlor ether propylenediamines of the formula Rg-O-(CH2)3-NH-(CN2)3-NH2. Rg here is an alkyl group having 8 to 18 carbon atoms. It is also possible to use the ether propylene(di)amlnes In the farm of their salts, in particular chlorides, acetates or farmates.
The inventive composition is used as a flotation reagent in amounts of preferably 14 to 500, in particular 20 to 200 g/t.
Examples Hereinafter, the effectiveness of the inventive flotation reagent was determined. Gonstttuent A was stearylamine acetate, constituent E was tsostearic acid. The amount used was 40 gIt (t.q,). The mixing ratio A:B
was 1:1.
The crude salt was ground and suspended in a saturated salt solution.
After addition of the collector, air was forced through the suspension. The salt which was rendered hydrophobic by the collector floats as a result on the surtace of the suspension and is skimmed off there. The potassium 80 content o~F the concentrate thus obtained was determined, and also its ratio to the total amount of potassium present (recovery).
The following results were obtained:
Table 1 No. Collector K20 in the K20 K~O
concentrate recove feed 1 Stea lamine 48.2 77.1 9.78 C
2 Stearylamine acetate + 47.2 61.7 9.78 (C) (Cg)3C-COOH
3 Stearylamine acetate + 49.1 72.8 9.78 (C) lauric acid 4 Stearylamine acetate + 50.8 82.0 9.78 isostearic acid 5 Stearylamine acetate + 50.1 48.6 9.78 (C) stearic acid
In the production of sylvinite from crude potash salts which occur, for example, in Germany, Belarus, CIS, Canada and the United States of America, it is necessary in some cases to remove foreign minerals, such as clays, dolomite, anhydride, hematite and other materials, preferably upstream of the flotation separation of sylvinite, from other crude potash salt components. The removal of foreign materials which are customarily termed slimes or insoluble fractions, is carried out by flotation. In flotation processes a crude salt pulp is customarily first subjected to a scrubbing operation to release the insoluble fractions, which are termed hereinafter insoluble fractions, and the cleaned crude salt pulp is then conditioned using one or more reagents which promote the removal of the insoluble fractions. The conditioned pulp is subjected to a froth separation, which removes a part of the insoluble constituents. Flocculants can be used to improve the separation. After the partial removal of the insoluble fractions, customarily an additive (blinding agent) is added to the crude salt pulp to inactivate residues of the insoluble fractions, conditioned with reagents and subjected to the froth separation for production of sylvinite and other crude potash salt components.
Because of numerous advantages, the flotation process for separating potash salt mixtures of natural or industrial origin to form intermediates or potash fertilizers by means of fatty amine collectors is widespread. By adding the fatty amine or salts thereof to the flotation pulp, the mineral component of value becomes hydrophobic and thus capable of being discharged in enriched form in the concentrate and isolated. Obviously, the chemical constitution of the collector, its preparation and the conditions of its metering have the greatest effect on its adsorption and thus on its action. Generally, primary fatty amines are used. In mixtures with these amines, short-chain alkylamines are used, for example as are present in cocoamine.
DD-B-154 960 discloses a fatty amine for the flotation of potash salts which has virtually saturated alkylamines produced from natural or synthetic starting substances in a ratio of the chain length fragments of C16~C18~C20=C22 such as from 10 to 25: from 55 to 70: from 4 to 10: from 5 to 20, preferably 15:65:5:10, and has a content of at least 92% primary amines.
US-4 045 335 discloses a process for the flotation of langbeinite and kieserite in which a reagent is used which, in addition to a fatty amine, preferably tallow fatty amine, also contains oleic acid or decanedioic acid.
It was an object of the present invention to provide a flotation reagent which enhances the KCI recovery in sylvinite flotation without decreasing the concentrate quality.
Surprisingly, it has been found that a mixture of a primary alkylamine salt and a branched fatty acid significantly enhances the flotation recovery compared with conventional collectors. The KCI content of the resultant concentrate produced is not decreased by the higher activity of the novel collector.
The invention thus relates to the use of a mixture of A) at least one compound of the formula [R~-NH3]+X
where R~ is a Cg-C22 alkyl radical and X is an anion, and B) a branched fatty acid having a chain length of 8 to 22 carbon atoms as collector in sylvinite flotation.
The invention further relates to a process for the flotation of sylvinite, in which the abovedescribed composition is added as collector to the flotation pulp.
The invention further relates to a composition effective as flotation reagent comprising A) at least one compound of the formula [R~-NH3]+X
where R~ is a Cg-C22 alkyl radical and X is an anion, and B) a branched fatty acid having a chain length of 8 to 22 carbon atoms.
Substituent A of the inventive composition preferably comprises a radical R~ having a chain length of 12 to 20, in particular 16 to 20, especially 18, carbon atoms. X can be any desired anion, but is preferably a chloride, formate, or acetate anion. A particularly preferred substituent A is stearylamine acetate.
Constituent B of the inventive composition is preferably a branched carboxylic acid having 14 to 22 carbon atoms, in particular isostearic acid.
The preferred mixing ratio of A:B is 90:10 to 10:90, in particular 75:25 to 25:75. In a further embodiment, the constituents A and B total 100% by weight.
For simplified handling of the inventive composition, this can be formulated with solvents. Suitable solvents are glycols, in particular butyl polygiycol, the residues from oxoalcohol synthesis, and also if appropriate water as minor constituent.
Residues from oxoalcohol synthesis preferably have the following composition:
Concentration range Constituent (% by weight) Di-2-ethylhexyl ether 10-25 2-Ethylhexanoic acid 2-ethylhexyl 10-25 ester Cog lactones 4-20 2-Ethylhexyl butyrate 3-10 2-Ethylhexane-(1,3)-diol mono-n-butyrate5-15 2-Ethythexano) 4-9 0 C4 to Cg acetals 2-10 2-Ethylhexane-( 1,3)-diol 2-5 Ethers and esters ~ C2p 0-20 In a further embodiment of the invention the inventive compositions are used in a mixture with quaternary ammonium salts. Such salts have the formula [NRZR3R4R5J~X~, where R2, R3, R4 and R5 are alkyl radicals having 1 to 18 carbon atoms. Preferably, one of the radicals R~ to R5 is a short-chain radical, for example methyl or ethyl, and the other radicals are tong-chain radicals having 8 to 1 B carbon atoms, Two short-chain radicals can also be combined with 2 long-chain radicals. Suitable anions X are chloride and sulfate.
In a further embodiment of the invention the inventive compositions are used in a mixture with ether propyleneamines. of the fvrrnula RB-O-(CH2)g-NHS andlor ether propylenediamines of the formula Rg-O-(CH2)3-NH-(CN2)3-NH2. Rg here is an alkyl group having 8 to 18 carbon atoms. It is also possible to use the ether propylene(di)amlnes In the farm of their salts, in particular chlorides, acetates or farmates.
The inventive composition is used as a flotation reagent in amounts of preferably 14 to 500, in particular 20 to 200 g/t.
Examples Hereinafter, the effectiveness of the inventive flotation reagent was determined. Gonstttuent A was stearylamine acetate, constituent E was tsostearic acid. The amount used was 40 gIt (t.q,). The mixing ratio A:B
was 1:1.
The crude salt was ground and suspended in a saturated salt solution.
After addition of the collector, air was forced through the suspension. The salt which was rendered hydrophobic by the collector floats as a result on the surtace of the suspension and is skimmed off there. The potassium 80 content o~F the concentrate thus obtained was determined, and also its ratio to the total amount of potassium present (recovery).
The following results were obtained:
Table 1 No. Collector K20 in the K20 K~O
concentrate recove feed 1 Stea lamine 48.2 77.1 9.78 C
2 Stearylamine acetate + 47.2 61.7 9.78 (C) (Cg)3C-COOH
3 Stearylamine acetate + 49.1 72.8 9.78 (C) lauric acid 4 Stearylamine acetate + 50.8 82.0 9.78 isostearic acid 5 Stearylamine acetate + 50.1 48.6 9.78 (C) stearic acid
Claims (10)
1. The use of a mixture of A) at least one compound of the formula [R1-NH3]+X-where R1 is a C8-C22 alkyl radical and X is an anion, and B) a branched fatty acid having a chain length of 8 to 22 carbon atoms as collector in sylvinite flotation.
2. The use as claimed in claim 1, wherein R1 has a chain length of 12 to 20 carbon atoms.
3. The use as claimed in claim 1 and/or 2, wherein X is a chloride, formate or acetate anion.
4. The use as claimed in one or more of claims 1 to 3, wherein constituent A is stearylamine acetate.
5. The use as claimed in one or more of claims 1 to 4, wherein constituent B is a branched carboxylic acid having 14 to 22 carbon atoms.
6. The use as claimed in one or more of claims 1 to 5, wherein constituent B is isostearic acid.
7. The use as claimed in one or more of claims 1 to 6, wherein the mixing ratio of A:B is 90:10 to 10:90.
8. The use as claimed in one or more of claims 1 to 7, wherein, in addition, glycols, residues from oxoalcohol synthesis and/or water is present.
9. The use as claimed in one or more of claims 1 to 8 in amounts of 10 to 500 g/t.
10. A composition effective as flotation reagent comprising A) at least one compound of the formula [R1-NH3]+X-where R1 is a C8-C22 alkyl radical and X is an anion, and B) a branched fatty acid having a chain length of 8 to 22 carbon atoms,
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10217693A DE10217693C1 (en) | 2002-04-20 | 2002-04-20 | Collector used in sylvinite flotation is mixture of mono-alkyl-ammonium salt and branched fatty acid, e.g. stearylamine acetate and isostearic acid |
| DE10217693.0 | 2002-04-20 | ||
| PCT/EP2003/003592 WO2003089144A1 (en) | 2002-04-20 | 2003-04-07 | Use of fatty amine salts in conjunction with fatty acids as auxiliary agents for the flotation of potassium salts (sylvinite) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2483165A1 true CA2483165A1 (en) | 2003-10-30 |
Family
ID=27771540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002483165A Abandoned CA2483165A1 (en) | 2002-04-20 | 2003-03-07 | Use of fatty amine salts in combination with fatty acids as reagents for the flotation of potash salts (sylvinite) |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20060032799A1 (en) |
| CA (1) | CA2483165A1 (en) |
| DE (1) | DE10217693C1 (en) |
| RU (1) | RU2004134319A (en) |
| WO (1) | WO2003089144A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009010294A1 (en) * | 2009-02-24 | 2010-09-02 | Clariant International Limited | Collector for flotation of non-soluble constituents of potash salts |
| DE102009010293A1 (en) * | 2009-02-24 | 2010-09-02 | Clariant International Ltd. | Collector for flotation of non-soluble constituents of potash salts |
| CN103721855B (en) * | 2013-12-31 | 2016-03-16 | 云南磷化集团有限公司 | The collecting agent of carbonate mineral in a kind of efficient removal collophane |
| CN115025883A (en) * | 2022-06-27 | 2022-09-09 | 华东理工大学 | Efficient flotation reagent suitable for potassium chloride direct flotation production |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR962964A (en) * | 1950-06-28 | |||
| DE1058442B (en) * | 1956-05-17 | 1959-06-04 | Montedison Spa | Process for processing kainite for the purpose of producing potassium sulfate |
| US4045335A (en) * | 1976-03-10 | 1977-08-30 | Duval Corporation | Beneficiation of kieserite and langbeinite from a langbeinite ore |
| GB2132992B (en) * | 1982-12-16 | 1986-01-29 | Tioxide Group Plc | Improved pigments and their manufacture |
| GB2207619A (en) * | 1987-08-04 | 1989-02-08 | Unilever Plc | Ore purification |
| BR8907130A (en) * | 1988-10-24 | 1991-02-13 | Exxon Chemical Patents Inc | COMPOSITION OF LUBRICATING OIL, FORCE TRANSMISSION FLUID, ADDITIVE CONCENTRATE, PROCESS TO IMPROVE THE MODIFICATION OF THE FRICTION OF A LUBRICATING OIL, COMPOSITION OF AMINE SALT AND SALT |
| DE19610920A1 (en) * | 1995-05-31 | 1996-12-05 | Mierswa Klaus | Mfg. high purity lapis lazuli pigment economically |
| FR2749588B1 (en) * | 1996-06-10 | 1998-09-11 | Rhone Poulenc Chimie | AQUEOUS SILICONE RESIN EMULSION FOR WATERPROOFING CONSTRUCTION MATERIALS |
-
2002
- 2002-04-20 DE DE10217693A patent/DE10217693C1/en not_active Expired - Fee Related
-
2003
- 2003-03-07 US US10/512,040 patent/US20060032799A1/en not_active Abandoned
- 2003-03-07 CA CA002483165A patent/CA2483165A1/en not_active Abandoned
- 2003-04-07 WO PCT/EP2003/003592 patent/WO2003089144A1/en active Application Filing
- 2003-04-07 RU RU2004134319/03A patent/RU2004134319A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003089144A1 (en) | 2003-10-30 |
| DE10217693C1 (en) | 2003-09-25 |
| RU2004134319A (en) | 2005-07-20 |
| WO2003089144A8 (en) | 2005-03-03 |
| US20060032799A1 (en) | 2006-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |