US2803345A - Froth flotation process - Google Patents
Froth flotation process Download PDFInfo
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- US2803345A US2803345A US376987A US37698753A US2803345A US 2803345 A US2803345 A US 2803345A US 376987 A US376987 A US 376987A US 37698753 A US37698753 A US 37698753A US 2803345 A US2803345 A US 2803345A
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- United States
- Prior art keywords
- flotation
- diol
- minerals
- concentration
- agents
- 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.)
- Expired - Lifetime
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- 238000000034 method Methods 0.000 title claims description 24
- 238000009291 froth flotation Methods 0.000 title description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 29
- 239000011707 mineral Substances 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 238000005188 flotation Methods 0.000 claims description 16
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 13
- -1 aliphatic mono-carboxylic acid diester Chemical class 0.000 description 12
- 125000000217 alkyl group Chemical group 0.000 description 9
- 125000004432 carbon atom Chemical group C* 0.000 description 9
- 125000004183 alkoxy alkyl group Chemical group 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 150000002009 diols Chemical class 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 150000005690 diesters Chemical class 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 150000004665 fatty acids Chemical group 0.000 description 4
- 239000008396 flotation agent Substances 0.000 description 4
- 239000010665 pine oil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- JKTORXLUQLQJCM-UHFFFAOYSA-N 4-phosphonobutylphosphonic acid Chemical compound OP(O)(=O)CCCCP(O)(O)=O JKTORXLUQLQJCM-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Natural products CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N propylene glycol Substances CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 1
- QSVIFMIHOCWOPL-UHFFFAOYSA-N 1,1,1,2-tetraethoxyethane Chemical compound CCOCC(OCC)(OCC)OCC QSVIFMIHOCWOPL-UHFFFAOYSA-N 0.000 description 1
- MNBUMRSEKNGNCN-UHFFFAOYSA-N 2-[2-(2-methylpropanoyloxy)ethoxy]ethyl 2-methylpropanoate Chemical compound CC(C)C(=O)OCCOCCOC(=O)C(C)C MNBUMRSEKNGNCN-UHFFFAOYSA-N 0.000 description 1
- BWHUFOFOQUQKGR-UHFFFAOYSA-N 2-[2-[2-(2-methylpropanoyloxy)ethoxy]ethoxy]ethyl 2-methylpropanoate Chemical compound CC(C)C(=O)OCCOCCOCCOC(=O)C(C)C BWHUFOFOQUQKGR-UHFFFAOYSA-N 0.000 description 1
- MAWNIZMTEBNXCZ-UHFFFAOYSA-N 2-propan-2-yloxypentanoic acid Chemical class CCCC(C(O)=O)OC(C)C MAWNIZMTEBNXCZ-UHFFFAOYSA-N 0.000 description 1
- YSIKHBWUBSFBRZ-UHFFFAOYSA-N 3-methoxypropanoic acid Chemical compound COCCC(O)=O YSIKHBWUBSFBRZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QSJXEFYPDANLFS-UHFFFAOYSA-N Diacetyl Chemical compound CC(=O)C(C)=O QSJXEFYPDANLFS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- FCSHMCFRCYZTRQ-UHFFFAOYSA-N N,N'-diphenylthiourea Chemical compound C=1C=CC=CC=1NC(=S)NC1=CC=CC=C1 FCSHMCFRCYZTRQ-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- XEIPQVVAVOUIOP-UHFFFAOYSA-N [Au]=S Chemical compound [Au]=S XEIPQVVAVOUIOP-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- KQNPFQTWMSNSAP-UHFFFAOYSA-N alpha-isobutyric acid Natural products CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 description 1
- 229910052948 bornite Inorganic materials 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- FGNLEIGUMSBZQP-UHFFFAOYSA-N cadaverine dihydrochloride Chemical compound Cl.Cl.NCCCCCN FGNLEIGUMSBZQP-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 229910052947 chalcocite Inorganic materials 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- SXCBDZAEHILGLM-UHFFFAOYSA-N heptane-1,7-diol Chemical compound OCCCCCCCO SXCBDZAEHILGLM-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N pentanoic acid group Chemical group C(CCCC)(=O)O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- JCBJVAJGLKENNC-UHFFFAOYSA-M potassium ethyl xanthate Chemical compound [K+].CCOC([S-])=S JCBJVAJGLKENNC-UHFFFAOYSA-M 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- B03D1/001—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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
-
- 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
- B03D2203/025—Precious metal ores
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S209/00—Classifying, separating, and assorting solids
- Y10S209/901—Froth flotation; copper
Definitions
- the object of the invention is to provide a process R .COO.R.OOC.R
- R is a saturated hydrocarbon or oxa-alkane chain which may bear alkyl, alkoxy or alkoxyalkyl substituents, and wherein R and R are alkyl or alkoxyalkyl groups, either the same or different.
- the carboxylic acid forming the ester groups is either a fatty acid or an alkoxy substituted fatty acid.
- examples of such acids are acetic, propionic, n-butyric, isobutyric, pentanoic, decanoic, stearic, 3-methoxypropionic, 3- ethoxy-2 methoxybutyric and 5 isopropoxypentanoic acids.
- diols forming the diester are ethylene glycol, lr2-propylene glycol, 1:3-propylene glycol, butane-2:3-diol, butane-l :3-diol, pentane-l :S-diol, octanellzS-diol, octancAfi-diol, Z-methoxymethyl-2:4-dimethylpentane-lzS-diol, diethylene glycol, trirnethylene glycol and triethylene glycol.
- the chain lengths of the acid and diol should not be excessive.
- the diol residue should be fairly short or should contain sufficient ether groups, whereas if the acid residue is short, Ca and C10 diols, or even higher diols if ether groups are present, may be used.
- Examples of compounds which may be used in the process of the present invention are butane-1:3-diol diisobutyrate, pentane-lzS-diol diacetate, heptane-l:7-diol diacetate, 2-methoxymethyl-2 4-dimethylpentane-1 :5 -diol diacetate, Z-methoxymethyl-Z 4-dimethylpentane-l :5 -diol di 3-methoxypropionate ,diethylene glycol diisobntyrate, triethylene glycol diisobutyrate.
- the compounds employed according to the present invention as frothing agents may be used either in pure form, or in impure form, as for example admixed with the byproducts coproduced with them, or alternatively, admixed with compounds having frothing properties, for example the tetra-alkoxy derivatives of paraflins such as 121:2:2 tetra-ethoxy-ethane, 1:l:2:2 tetranormal-propoxy-ethane, l 1 :2 2-tetrabutoxyethane, 1 2 l :3 :3-tetranorrnal-propoxypropane, 1: l 24:4-tetramethoxy-butane and 1 1 :5 S-tetraethoxypentane.
- paraflins such as 121:2:2 tetra-ethoxy-ethane, 1:l:2:2 tetranormal-propoxy-ethane, l 1 :2 2-t
- froth flotation agents according to the present invention is that satisfactory frothing is obtained with the aid of a very much smaller proportion thereof than as compared with previously Lil used froth flotation agents, such as steam distilled pine oil.
- the froth flotation agents according to the present invention are capable of producing a froth that is not noticeably brittle or weeping and which obviates the need for the addition of froth-stiffening substances.
- the present invention for the treatment of minerals by froth flotation is of particular application in the treatment of sulphidic ores such as copper-containing sulphidie ores, but is also applicable to the treatment of other ores such as lead, zinc, iron, molybdenum, nickel and gold sulphide and non-sulphide ores and also to mineral ores such as coal ores.
- the froth flotation process may be carried out as used or described in the art, the frothing agents herein disclosed being suitable for use with or without collecting agents, modifying agents, activating agents and other froth flotation reagents, and otherwise applicable to the processes generally employed.
- the conditions most suitable for operation that is the amount of the frothing agent. the particle size of the ore, the temperature, the pH of the mixture, the proportion of ore in the pulp, the addition of other agents and adjuncts for the process, are readily determinable by one skilled in the art. I have found the use of amounts of the froth flotation agents of my invention in the range 0.000l% to 0.05%, and preferably about 0.0005 to 0.002% by weight based on the weight of the mineral satisfactory.
- Example 1 500 parts of a siliceous copper ore containing chalcocite, chalcopyrite and bornite is ground with 200 parts of water in a rod mill to minus mesh particle size. The pulp is transferred to a Fagergren flotation machine and 0.005 part of potassium ethyl xanthate is added thereto. The pulp is diluted with 3000 parts of water, 0.0031 part of diethylene glycol diisobutyrate is added as frothing agent, and the mixture is then conditioned without aeration for 2 minutes. The pH of the pulp is about 7.2. Aeration is then applied and froth is removed for 8 minutes. The froth obtained is not brittle or weeping and no stiffener is added thereto.
- Butane-1:3-diol diisobutyrate was also tested and was found to be as good as any of the above diesters.
- a method of efiecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an aliphatic mono-carboxylic acid diester of diethylene glycol of the formula:
- R and R' are selected from the group consisting of alkyl groups and alkoxyalkyl groups containing from one to nineteen carbon atoms.
- a method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an aliphatic mono-carboxylic acid diester of heptane-1,7-diol of the formula:
- R and R are selected from the group consisting of alkyl groups and alkoxyalkyl groups containing from one to nineteen carbon atoms.
- a method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an aliphatic mono-carboxylic acid diester of Z-methoxymethyl- 2,4-dimethylpentane-1,5-diol of the formula:
- R and R are selected from the group consisting of alkyl groups and alkoxyalkyl groups containing from one to nineteen carbon atoms.
- a method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an acetic acid diester of an aliphatic die] of the formula:
- R is selected from the group consisting of a polymethylene chain, an alkyl substituted polymethylene chain, an alkoxyalkyl substituted polymethylene chain ill and an oxa-alkane chain containing from two to ten carbon atoms.
- a method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an isobutyric acid diester of an aliphatic diol of the formula:
- R is selected from the group consisting of a polymethylenc chain, an alkyl substituted polymethylene chain, an :Jkoxyalkyl substituted polymcthylenc chain and an oxa-alkane containing from two to ten carbon atoms.
- a method of eilccting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp in the capacity of a frothing agent, diethylene glycol diisobutyratc.
- a method of effecting the concentration of minerals by flotation which comprises the. step of adding to the mineral pulp, in the capacity of a frothing agent, heptane-l,7-diol diacetate.
- a method of efiecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, 2- methoxymethyl-2,4-dimethylpentane-l,S-diol diacetate.
- a method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, 2- rnethoxymethyl-Z,4-dimethylpentane-1,5-diol di-(3-methoxypropionate).
- a method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, butanel,3-diol diisobutyrate.
- Method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, a diester of the formula wherein R contains from two to ten carbon atoms and is selected from the group consisting of a polymethylene chain, an alkyl substituted polymethylene chain, an alkoxy alkyl substituted polymethylene chain and an oxaalkane chain, and wherein R and R are each selected from the group consisting of an alkyl group and an alkoxy alkyl group containing from one to nineteen carbon atoms, said ester containing a relatively small number of carbon atoms in the R group where this consists mainly of carbon and hydrogen and where the R and R groups each contain from ten to nineteen carbon atoms.
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- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
2,803,345 l atented Aug. 20, 1957 FROTH FLOTATION PROCESS David Ian Hutchinson Jacobs, Upper Pine, Woodmansterne, England, assignor to The Distillers Company Limited, Edinburgh, Scotland, a British company No Drawing. Application August 27, 1953, Serial No. 376,987
Claims priority, application Great Britain September 24, 1952 11 Claims. (Cl. 209-166) Froth flotation processes for the concentration and purification of many minerals such as metallic and nonmetallic ores and coal are well known. In such processes water containing frothing agents is added to the minerals and separation is effected by selective flotation.
The object of the invention is to provide a process R .COO.R.OOC.R
wherein R is a saturated hydrocarbon or oxa-alkane chain which may bear alkyl, alkoxy or alkoxyalkyl substituents, and wherein R and R are alkyl or alkoxyalkyl groups, either the same or different.
The carboxylic acid forming the ester groups is either a fatty acid or an alkoxy substituted fatty acid. Examples of such acids are acetic, propionic, n-butyric, isobutyric, pentanoic, decanoic, stearic, 3-methoxypropionic, 3- ethoxy-2 methoxybutyric and 5 isopropoxypentanoic acids. Examples of diols forming the diester are ethylene glycol, lr2-propylene glycol, 1:3-propylene glycol, butane-2:3-diol, butane-l :3-diol, pentane-l :S-diol, octanellzS-diol, octancAfi-diol, Z-methoxymethyl-2:4-dimethylpentane-lzS-diol, diethylene glycol, trirnethylene glycol and triethylene glycol. In order to confer suflicient wa ter-solubility on the diester, the chain lengths of the acid and diol should not be excessive. For instance if the acid residue is derived from a C to Czu acid, the diol residue should be fairly short or should contain sufficient ether groups, whereas if the acid residue is short, Ca and C10 diols, or even higher diols if ether groups are present, may be used.
Examples of compounds which may be used in the process of the present invention are butane-1:3-diol diisobutyrate, pentane-lzS-diol diacetate, heptane-l:7-diol diacetate, 2-methoxymethyl-2 4-dimethylpentane-1 :5 -diol diacetate, Z-methoxymethyl-Z 4-dimethylpentane-l :5 -diol di 3-methoxypropionate ,diethylene glycol diisobntyrate, triethylene glycol diisobutyrate.
The compounds employed according to the present invention as frothing agents may be used either in pure form, or in impure form, as for example admixed with the byproducts coproduced with them, or alternatively, admixed with compounds having frothing properties, for example the tetra-alkoxy derivatives of paraflins such as 121:2:2 tetra-ethoxy-ethane, 1:l:2:2 tetranormal-propoxy-ethane, l 1 :2 2-tetrabutoxyethane, 1 2 l :3 :3-tetranorrnal-propoxypropane, 1: l 24:4-tetramethoxy-butane and 1 1 :5 S-tetraethoxypentane.
One noteworthy advantage of the froth flotation agents according to the present invention is that satisfactory frothing is obtained with the aid of a very much smaller proportion thereof than as compared with previously Lil used froth flotation agents, such as steam distilled pine oil.
The froth flotation agents according to the present invention are capable of producing a froth that is not noticeably brittle or weeping and which obviates the need for the addition of froth-stiffening substances.
The present invention for the treatment of minerals by froth flotation is of particular application in the treatment of sulphidic ores such as copper-containing sulphidie ores, but is also applicable to the treatment of other ores such as lead, zinc, iron, molybdenum, nickel and gold sulphide and non-sulphide ores and also to mineral ores such as coal ores.
The froth flotation process may be carried out as used or described in the art, the frothing agents herein disclosed being suitable for use with or without collecting agents, modifying agents, activating agents and other froth flotation reagents, and otherwise applicable to the processes generally employed. The conditions most suitable for operation, that is the amount of the frothing agent. the particle size of the ore, the temperature, the pH of the mixture, the proportion of ore in the pulp, the addition of other agents and adjuncts for the process, are readily determinable by one skilled in the art. I have found the use of amounts of the froth flotation agents of my invention in the range 0.000l% to 0.05%, and preferably about 0.0005 to 0.002% by weight based on the weight of the mineral satisfactory.
In the flotation of sulphidic and oxidised metallic ores, compounds such as the xauthates, such as ethyl xanthate, dithiophosphates, phosphocresylic acids and diphenyl thiourea, are frequently used as collecting agents, while in the flotation of non-metallic ores, fatty acids and fatty acid soaps are normally used as collecting agents.
The following examples are given to illustrate the process of the present invention. The parts and percentages are by weight.
Example 1 500 parts of a siliceous copper ore containing chalcocite, chalcopyrite and bornite is ground with 200 parts of water in a rod mill to minus mesh particle size. The pulp is transferred to a Fagergren flotation machine and 0.005 part of potassium ethyl xanthate is added thereto. The pulp is diluted with 3000 parts of water, 0.0031 part of diethylene glycol diisobutyrate is added as frothing agent, and the mixture is then conditioned without aeration for 2 minutes. The pH of the pulp is about 7.2. Aeration is then applied and froth is removed for 8 minutes. The froth obtained is not brittle or weeping and no stiffener is added thereto.
For purposes of comparison the process is repeated exactly as described above with the exception that the 0.0031 part of di-ethylene glycol diiso-butyrate is replaced by 0.0087 part of pine oil. The results obtained are shown in the table below:
ICoppcr The process described in Example 1 is repeated with the pairs of frothers shown in the table below with the following results:
Cop er Recov- Per- Copper hi on- Copper cry of cent in are conin tailcopper Frother Frotlttpertrate ing in conor on cent) (per- (percentratc m cent) cent.) (P
cont) Heptane-lrT-diol (llnce tate l.. 0.0005 4.24 58.2 091 Till: Pineoil 0.0017 4,223 60.4 0.82 51.5 2 methoxymethyl 2:4- dlmethyl pentane 1:5- dlol dtacetate ll. H005 4.10 57. o, 91 7s. a Plneoil.. 0,0017 4.23 (10.4 0,82 P11. 2 methoxynlcthyl 2:4-
dimethylpentane 1:5 dlol (ll-(3-ll'l0fill0XY-pl0 pnate) U. 0005 4.05 57.7 0.83 70.9 Pine Oil (l, 0017 4. 23 60. 4 (1.81. 31.5 Trlethylene glycol diisobutyrato a D. 0006 4. ll 59. 5 1 03 75, 1 Pine oil 0.0014 4. U7 4 1. 04 7-).1 Pentaned 5-dlol diacetate 0.0021) 3. 92 56. 4 I). 95. 1 Pine oil 0. 0037 4. 29 47. 3 t). 9'1. 3
Butane-1:3-diol diisobutyrate was also tested and was found to be as good as any of the above diesters.
I claim:
1. A method of efiecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an aliphatic mono-carboxylic acid diester of diethylene glycol of the formula:
wherein R and R' are selected from the group consisting of alkyl groups and alkoxyalkyl groups containing from one to nineteen carbon atoms.
2. A method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an aliphatic mono-carboxylic acid diester of heptane-1,7-diol of the formula:
wherein R and R are selected from the group consisting of alkyl groups and alkoxyalkyl groups containing from one to nineteen carbon atoms.
3. A method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an aliphatic mono-carboxylic acid diester of Z-methoxymethyl- 2,4-dimethylpentane-1,5-diol of the formula:
wherein R and R are selected from the group consisting of alkyl groups and alkoxyalkyl groups containing from one to nineteen carbon atoms.
4. A method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an acetic acid diester of an aliphatic die] of the formula:
CH3.COO.R.OOC.CH3
wherein R is selected from the group consisting of a polymethylene chain, an alkyl substituted polymethylene chain, an alkoxyalkyl substituted polymethylene chain ill and an oxa-alkane chain containing from two to ten carbon atoms.
5. A method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, an isobutyric acid diester of an aliphatic diol of the formula:
(CH3 2.CH.COO.R.OOC.CH.(CHs )2 wherein R is selected from the group consisting of a polymethylenc chain, an alkyl substituted polymethylene chain, an :Jkoxyalkyl substituted polymcthylenc chain and an oxa-alkane containing from two to ten carbon atoms.
6. A method of eilccting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp in the capacity of a frothing agent, diethylene glycol diisobutyratc.
7. A method of effecting the concentration of minerals by flotation which comprises the. step of adding to the mineral pulp, in the capacity of a frothing agent, heptane-l,7-diol diacetate.
8. A method of efiecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, 2- methoxymethyl-2,4-dimethylpentane-l,S-diol diacetate.
9. A method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, 2- rnethoxymethyl-Z,4-dimethylpentane-1,5-diol di-(3-methoxypropionate).
10. A method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, butanel,3-diol diisobutyrate.
11. Method of effecting the concentration of minerals by flotation which comprises the step of adding to the mineral pulp, in the capacity of a frothing agent, a diester of the formula wherein R contains from two to ten carbon atoms and is selected from the group consisting of a polymethylene chain, an alkyl substituted polymethylene chain, an alkoxy alkyl substituted polymethylene chain and an oxaalkane chain, and wherein R and R are each selected from the group consisting of an alkyl group and an alkoxy alkyl group containing from one to nineteen carbon atoms, said ester containing a relatively small number of carbon atoms in the R group where this consists mainly of carbon and hydrogen and where the R and R groups each contain from ten to nineteen carbon atoms.
References Cited in the file of this patent UNITED STATES PATENTS Hall et al. Sept. 28, 1954 OTHER REFERENCES
Claims (1)
11. METHOD OF EFFECTING THE CONCENTRATION OF MINERALS BY FLOTATION WHICH COMPRISES THE STEP OF ADDING TO THE MINERAL PULP, IN THE CAPACITY OF A FROTHING AGENT, A DIESTER OF THE FORMULA
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB23901/52A GB747658A (en) | 1952-09-24 | 1952-09-24 | Froth flotation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2803345A true US2803345A (en) | 1957-08-20 |
Family
ID=10203136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US376987A Expired - Lifetime US2803345A (en) | 1952-09-24 | 1953-08-27 | Froth flotation process |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2803345A (en) |
| DE (1) | DE933263C (en) |
| GB (1) | GB747658A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3623605A (en) * | 1969-01-09 | 1971-11-30 | Montedison Spa | Process for the flotation of fluorite |
| US4504385A (en) * | 1982-12-30 | 1985-03-12 | Sherex Chemical Company, Inc. | Ester-alcohol frothers for froth flotation of coal |
| US4589980A (en) * | 1982-10-14 | 1986-05-20 | Sherex Chemical Company, Inc. | Promoters for froth flotation of coal |
| US4678563A (en) * | 1985-05-07 | 1987-07-07 | Sherex Chemical Company, Inc. | Modified alcohol frothers for froth flotation of sulfide ore |
| US20090178959A1 (en) * | 2008-01-15 | 2009-07-16 | Georgia-Pacific Chemicals Llc | Method for the beneficiation of coal |
| US20090194466A1 (en) * | 2008-02-05 | 2009-08-06 | Georgia-Pacific Chemicals Llc | Method for the froth flotation of coal |
| CN108160340A (en) * | 2017-12-02 | 2018-06-15 | 长春黄金研究院 | A kind of super low concentration copper-cobalt ore method for floating |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106631805A (en) * | 2016-12-30 | 2017-05-10 | 山东万图高分子材料股份有限公司 | Non-benzene softening agent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2690260A (en) * | 1951-10-16 | 1954-09-28 | Distillers Co Yeast Ltd | Froth flotation process |
-
1952
- 1952-09-24 GB GB23901/52A patent/GB747658A/en not_active Expired
-
1953
- 1953-08-20 DE DED15748A patent/DE933263C/en not_active Expired
- 1953-08-27 US US376987A patent/US2803345A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2690260A (en) * | 1951-10-16 | 1954-09-28 | Distillers Co Yeast Ltd | Froth flotation process |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3623605A (en) * | 1969-01-09 | 1971-11-30 | Montedison Spa | Process for the flotation of fluorite |
| US4589980A (en) * | 1982-10-14 | 1986-05-20 | Sherex Chemical Company, Inc. | Promoters for froth flotation of coal |
| US4504385A (en) * | 1982-12-30 | 1985-03-12 | Sherex Chemical Company, Inc. | Ester-alcohol frothers for froth flotation of coal |
| EP0113310A3 (en) * | 1982-12-30 | 1986-03-19 | Sherex Chemical Company, Inc. | Ester-alcohol frothers for froth flotation of coal |
| US4678563A (en) * | 1985-05-07 | 1987-07-07 | Sherex Chemical Company, Inc. | Modified alcohol frothers for froth flotation of sulfide ore |
| EP0201450A3 (en) * | 1985-05-07 | 1989-09-27 | Sherex Chemical Company, Inc. | Modified alcohol frothers for froth flotation of sulfide ore |
| US20090178959A1 (en) * | 2008-01-15 | 2009-07-16 | Georgia-Pacific Chemicals Llc | Method for the beneficiation of coal |
| US8925729B2 (en) | 2008-01-15 | 2015-01-06 | Georgia-Pacific Chemicals Llc | Method for the beneficiation of coal |
| US10307770B2 (en) | 2008-01-15 | 2019-06-04 | Ingevity South Carolina, Llc | Method for the benificiation of coal |
| US20090194466A1 (en) * | 2008-02-05 | 2009-08-06 | Georgia-Pacific Chemicals Llc | Method for the froth flotation of coal |
| WO2009099731A1 (en) * | 2008-02-05 | 2009-08-13 | Georgia-Pacific Chemicals Llc | Method for the froth flotation of coal |
| AU2009210639B2 (en) * | 2008-02-05 | 2012-06-21 | Georgia-Pacific Chemicals Llc | Method for the froth flotation of coal |
| US8875898B2 (en) | 2008-02-05 | 2014-11-04 | Georgia-Pacific Chemicals Llc | Method for the froth flotation of coal |
| CN108160340A (en) * | 2017-12-02 | 2018-06-15 | 长春黄金研究院 | A kind of super low concentration copper-cobalt ore method for floating |
Also Published As
| Publication number | Publication date |
|---|---|
| DE933263C (en) | 1955-09-22 |
| GB747658A (en) | 1956-04-11 |
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