US2211686A - Depression of gangue during flotation - Google Patents
Depression of gangue during flotation Download PDFInfo
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- US2211686A US2211686A US216291A US21629138A US2211686A US 2211686 A US2211686 A US 2211686A US 216291 A US216291 A US 216291A US 21629138 A US21629138 A US 21629138A US 2211686 A US2211686 A US 2211686A
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- United States
- Prior art keywords
- gangue
- flotation
- percent
- per ton
- test
- 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
Links
- 238000005188 flotation Methods 0.000 title description 30
- 239000000463 material Substances 0.000 description 21
- 238000009291 froth flotation Methods 0.000 description 17
- 239000010931 gold Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 239000000975 dye Substances 0.000 description 14
- 230000000881 depressing effect Effects 0.000 description 11
- 239000003607 modifier Substances 0.000 description 10
- 239000012141 concentrate Substances 0.000 description 8
- 230000002939 deleterious effect Effects 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- OIQPTROHQCGFEF-UHFFFAOYSA-L chembl1371409 Chemical compound [Na+].[Na+].OC1=CC=C2C=C(S([O-])(=O)=O)C=CC2=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 OIQPTROHQCGFEF-UHFFFAOYSA-L 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 150000002736 metal compounds Chemical class 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 6
- 230000003381 solubilizing effect Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 239000010970 precious metal Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 4
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical group CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 4
- 230000001143 conditioned effect Effects 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000010665 pine oil Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 3
- 235000021286 stilbenes Nutrition 0.000 description 3
- RGCKGOZRHPZPFP-UHFFFAOYSA-N Alizarin Natural products C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229920001353 Dextrin Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- HFVAFDPGUJEFBQ-UHFFFAOYSA-M alizarin red S Chemical compound [Na+].O=C1C2=CC=CC=C2C(=O)C2=C1C=C(S([O-])(=O)=O)C(O)=C2O HFVAFDPGUJEFBQ-UHFFFAOYSA-M 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 2
- 229910052951 chalcopyrite Inorganic materials 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- -1 sodium diethyland disecondary butyl-dithiophosphates Chemical class 0.000 description 2
- 108091005950 Azurite Proteins 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 1
- MRQIXHXHHPWVIL-ISLYRVAYSA-N Sudan I Chemical compound OC1=CC=C2C=CC=CC2=C1\N=N\C1=CC=CC=C1 MRQIXHXHHPWVIL-ISLYRVAYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052948 bornite Inorganic materials 0.000 description 1
- QNMWTTFPYZEDCD-UHFFFAOYSA-N butylsulfanyl-dihydroxy-sulfanylidene-$l^{5}-phosphane Chemical class CCCCSP(O)(O)=S QNMWTTFPYZEDCD-UHFFFAOYSA-N 0.000 description 1
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- ZXJXZNDDNMQXFV-UHFFFAOYSA-M crystal violet Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1[C+](C=1C=CC(=CC=1)N(C)C)C1=CC=C(N(C)C)C=C1 ZXJXZNDDNMQXFV-UHFFFAOYSA-M 0.000 description 1
- FYGDTMLNYKFZSV-MRCIVHHJSA-N dextrin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)OC1O[C@@H]1[C@@H](CO)OC(O[C@@H]2[C@H](O[C@H](O)[C@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O FYGDTMLNYKFZSV-MRCIVHHJSA-N 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- JCBJVAJGLKENNC-UHFFFAOYSA-M potassium ethyl xanthate Chemical compound [K+].CCOC([S-])=S JCBJVAJGLKENNC-UHFFFAOYSA-M 0.000 description 1
- 229910052952 pyrrhotite Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- FTUYQIPAPWPHNC-UHFFFAOYSA-M sodium;4-[[4-[benzyl(ethyl)amino]phenyl]-[4-[benzyl(ethyl)azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]benzene-1,3-disulfonate Chemical compound [Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=CC=CC=2)C=2C(=CC(=CC=2)S([O-])(=O)=O)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC=C1 FTUYQIPAPWPHNC-UHFFFAOYSA-M 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- GWBUNZLLLLDXMD-UHFFFAOYSA-H tricopper;dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Cu+2].[Cu+2].[Cu+2].[O-]C([O-])=O.[O-]C([O-])=O GWBUNZLLLLDXMD-UHFFFAOYSA-H 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
-
- 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
- This invention relates to froth flotation the most varied types of ores, such as precious processes and in particular, to the flotation of metal ores, base metal ores, non-metallics and ores having slimy gangues. the like.
- the dyestuffs which possess solubilizing groups other slimes have sometimes been ordinary gangue than sulfonic acid groups.
- the efliciency of the minerals, such as those of a generally silicious different dyes will vary to some extent, but they nature, and sometimes have been carbonaceous. all possess the property of modifying gangue so While it is often possible to deslime ores prior 88 to inhibit its undesirable effects.
- the surfaces of the gangue is not as yet definitely h present ntion i dir t d to a, froth known, and the invention is not intended to be flotation process in which the gangue is modified, limited to any particular e y of actionand more particularly the fine gangue, by the ad- It is an advantage of the present invention dition of a class of reagents so that although it that the dyestuff while they may be used alone is not removed prior to froth flotation, it does h great eflect, can also be combined with not adversely affect the flotation operation or er ypes of gengue modifiers. such as for exits adverse effects are to a great extent limited.
- gangue modifiers were also used: 0.50 lb. per ton of water-soluble.nigrosine in test #2, 0.5 lb. per ton of a fifty-fifty mixture of water-soluble nigrosine and a dried molasses residue in test #3, 0.5 lb. per ton of a fifty-fifty mixture of water-soluble nigrosine and calcium lignin sulfonate in test #4, 0.50 lb. per ton of a fifty-fifty mixture of water-soluble nigrosine and yellow corn dextrine netite, limonite and quartz, and assaying 0.308 to 0.327 oz.
- Example 2 sun yellow, in test #11; 0.25 lb. per ton of water- A carbonaceous gold ore from South Africa containing pyrite, chalcopyrite, bornite, pyrrhotite, quartz and carbonaceous material, and assaying 0.263 to 0.280 oz. Au per ton, 0.975% S, 1.47% C, and about 91% insoluble, was subjected soluble nigrosine in test #12; and no gangue modifier was used in test #10. The results of these tests were compared with those obtained by using 2.0 lbs. per ton of soda ash (test #13) and 2.0 lbs per ton of sodium silicate (test #14),
- Example 4 0.03 lb. per ton of a fifty-fifty mixture of sodium diethyland disecondary butyl-dithiophosphates, and 0.062 lb. per ton of pine oil.
- the following gangue modifiers were also used: 1.0 lb per ton of water-soluble nigrosine in test #7, 1.0 lb. per ton of a stilbene dye, sun yellow, in test #8, 1.0 lb. per ton of an anthraquinone dye, alizarin saphirol B, in test #9, and no gangue modifier in test #6.
- test #16 the ore was conditioned first with 0.25 lb. per ton of water-soluble nigrosine and then with 0.15 lb. per ton of potassium Feed Concentrate Telling Test No.
- Example 3 secondary butyl xanthate and 0.0621b. per ton of A gold ore from the Philippine Islands containing gold, pyrite, chalcopyrite, azurite, magpine oil; in test #15 no water-soluble nigrosine was used.
- Example 5 SEARCH R00? 2.
- G 0500 Weight, Ratio C8003, ggg g Weight, 0300., 333 percent percent cone. percent recov? percent percent percent
- Example 6 Tests have shown that the behaviour of gangue depressants for carbonaceous precious metal ores can be accurately predicted by their action on pure graphite in a small laboratory flotation machine. The results are completely reliable qualitatively and reliable quantitatively with a moderate degree of accuracy. A large number of dyes were tested out in the laboratory machine for their action on graphite slime, the tests being erous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide, which comprises subjecting the material to flotation in the presence of a collector without removing the gangue and depressing the gangue by means of an effective amount of water-soluble nigrosine.
- a method of froth flotation of materials containing floatable metals or metal compounds and finely divided carbonaceous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide which comprises subjecting the material to flotation in the presence of a collector as follows: without removing the gangue and depressing the Floated Tailings No. of Feed, Floated, l gs. percent percent dye color Dye name Dye class weight weight Index N in wet r sol Azine 25. l l. 3 23. 8 5. 18 94. 82 865 ln gi i ii ne fu f do 25. 0 9. 3 15- 7 37- 20 62.
- a method of froth flotation of materials containing floatable metals or metal compounds and finely divided substantially barren non-metalliferous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide which comprises subjecting the material to flotation in the presence of a collector without removing the gangue and depressing the gangue by means of an effective amount of a dyestuif containing a solubilizing group included in the group consisting of carboxyl, sulfonic, and their salts.
- a method of froth flotation of carbonaceous precious metal ores which comprises carrying out the froth flotation without preliminary removal of carbonaceous gangue and depressing the gangue by means of water-soluble nigrosine.
- a method of froth flotation of carbonaceous precious metal ores which comprises carrying out the froth flotation without preliminary removal of carbonaceous gangue and depressing the gangue by means of sun yellow.
- a method of froth flotation of non-metallies in the presence of finely divided gangue which comprises carrying out the flotation without removing the fine gangue and depressing the gangue by means of water-soluble nigrosine.
- a method according to claim 10 in which the material floated is a cement rock raw material.
- a method according to claim 11 in which the material floated is a cement rock raw ma- 20 terial.
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
ZUB. ULASSIWWG. SEPARATING (it ASSURTING .SULIUS Patented Aug. 13, 1940 UNITED STATES In both cases, the present invention greatly reduces the adverse effect of the different types of gangue.
It is an advantage of the present invention that it is applicable to finely divided gangues of StAriCH BOO;
PATENT OFFICE DEPRESSION F GANGUE DURING FLOTATION Robert B. Booth, Springdale, Conn., assignor to American Cyanamid Company, New York, a
N. Y., a corporation oi Maine No Drawing. Application June 28, 1938,
Serial No. 216,291
13 Claims. (01. 209-166) This invention relates to froth flotation the most varied types of ores, such as precious processes and in particular, to the flotation of metal ores, base metal ores, non-metallics and ores having slimy gangues. the like. The property of inhibiting the unde- In the past, much difficulty has been encounsirable effects of finely divided gangue appears tered with certain ores in which some or all of to be a general one possessed in high degree by the gangue constituents have been present as all acid dyestuffs, and in considerable degree by fine slimes which have hindered flotation. The dyestuffs which possess solubilizing groups other slimes have sometimes been ordinary gangue than sulfonic acid groups. The efliciency of the minerals, such as those of a generally silicious different dyes will vary to some extent, but they nature, and sometimes have been carbonaceous. all possess the property of modifying gangue so While it is often possible to deslime ores prior 88 to inhibit its undesirable effects. Among the to treatment by froth flotation, this is not aldyes, I have found that water-soluble nigrosine ways feasible because in many cases certain com- (sulfonated nigrosine) and sun yellow are among ponents of the slime carry with them recoverable the most efficient and at the same time are values or, in other cases, it is necessary to grind readily available. the feed to a very fine size so that practically The exact mechanism by which the dyes aflect all of the feed might be considered as a slime. the surfaces of the gangue is not as yet definitely h present ntion i dir t d to a, froth known, and the invention is not intended to be flotation process in which the gangue is modified, limited to any particular e y of actionand more particularly the fine gangue, by the ad- It is an advantage of the present invention dition of a class of reagents so that although it that the dyestuff while they may be used alone is not removed prior to froth flotation, it does h great eflect, can also be combined with not adversely affect the flotation operation or er ypes of gengue modifiers. such as for exits adverse effects are to a great extent limited. mple li 'nin sulfonates as described and claimed The present invention is based on the discovn e applications o Breerwood. Se al No. 5 ery that dyestuffs having solubilizing groupings, 3. d serial 163.303 both filed l and particularly acid dyestuffs containing cartember 10, 1937; dextrin as described and claimed boxyl or sulfonic groups or both, exert an action in my cop d pp Serial 138,075 on gangue, preventing interference with froth filed ua y 1938; crude su ar residues as flotation both in the case of fine silicious gangue described and claimed in my copending appliand also in the case 01 carbonaceous gangue, cation, Serial N0. 211,811 flled June 4, 1938; and particularly with precious metal ores. the like- In some of the examples, the use of The mechanism of the interference of the p c mixtures is described. gangue with the flotation is probably not the The invention will be ri e in greater same in all cases, and the present invention is detail n Conjunction with the following specific 5 not intended to be limited to any particular e amples, the flotation being in eve y case in theory of action of the finely divided gangue or Standard Fagerglen flotation machines xcept of the solubilized dyestuffs thereon. In the case for mp 7 in which a small e pecial laboof silicious gangue, it is probable that the gangue retory c e was used. modifies the surfaces of the values and reduces recovery, whereas the dyestuffs of the present Emmplel invention appear. to so alter or modify the sur- A carbonaceous gold ore om the Mother faces of the fine gangue particles that they no 'i r t c nta s d. pyr ma netite. longer exert this deleterious action or exert it ersenopyrite. oheloopyrite. q te. musto a very greatly reduced extent. In the case smite and carbonaceous material. d assaying of carbonaceous gangue in carboncaeous precious 0133 to 0-190 Au D Fe. 0.80% C, metal ores, the above factor is not the only one and about 73% insoluble, was j ted to flobecause the carbon also contaminates the contation With and without a dye as ga ue modicentrate and adversely affects cyanidation of her. The ore pulp was conditioned with 0.15 lb. the concentrate which is commonly practiced. p r ton f s h. .21 l per ton of copper sulfate pentahydrate, 0.08 lb. per ton of potassium ethyl xanthate, 0.010 lb. per ton of potassium secondary butyl xanthate, 0.10 lb. per ton of a fifty-fifty mixture of sodium diethyland disecondary butyl-dithiophosphates, and 0.062
lb. per ton of pine oil. The following gangue modifiers were also used: 0.50 lb. per ton of water-soluble.nigrosine in test #2, 0.5 lb. per ton of a fifty-fifty mixture of water-soluble nigrosine and a dried molasses residue in test #3, 0.5 lb. per ton of a fifty-fifty mixture of water-soluble nigrosine and calcium lignin sulfonate in test #4, 0.50 lb. per ton of a fifty-fifty mixture of water-soluble nigrosine and yellow corn dextrine netite, limonite and quartz, and assaying 0.308 to 0.327 oz. Au per ton, 0.06% Cu, 2.95% Fe, 0.38% S and about 92% insoluble, was floated. This ore presented a slime interference during flotation. The pulp was conditioned with the following reagents: 0.15 lb. per ton of potassium secondary butyl xanthate, 0.05 lb. per ton of a fifty-fifty mixture of sodium diethyland discoondary butyl-dithiophosphates, and 0.062 lb. per
in test #5, and no gangue modifier was used in ton of pine oil. The following gangue modifiers test #1. were also used: 2.0 lbs. per ton of a stilbene dye,
Feed Concentrate Teiling Test No.
G Oz. Au, Weight, Ratio Oz. Au, Percent Weight, Oz. Au, Percent ton percent conc n An recov. percent ton Au recov.
002. 4 0.190 14 34 7.0 1 1. 200 95. 20 35. 55 0.010 4 14 003. 5 0.154 5 12 17. 5 1 2. 530 94.13 94 2s 0.010 5. 84 5050 0.138 5 52 17. 8/1 2.240 91. 30 94. 33 0.013 3.10 000. 2 0.158 s 14. 4/1 2. 280 94 04 93. 04 0.010 5. 30 004.9 0.154 e 93 14. 4/1 2.120 95.45 93. 07 0.008 4.55
Example 2 sun yellow, in test #11; 0.25 lb. per ton of water- A carbonaceous gold ore from South Africa containing pyrite, chalcopyrite, bornite, pyrrhotite, quartz and carbonaceous material, and assaying 0.263 to 0.280 oz. Au per ton, 0.975% S, 1.47% C, and about 91% insoluble, was subjected soluble nigrosine in test #12; and no gangue modifier was used in test #10. The results of these tests were compared with those obtained by using 2.0 lbs. per ton of soda ash (test #13) and 2.0 lbs per ton of sodium silicate (test #14),
to flotation with and without a dye as gangue two reagents frequently used to overcome slime modifier. The ore was conditioned with 0.35 lb. interference during flotation.
Feed Concentrate 'Ieiilng Test No.
G Oz. Au, Weight, Ratio Oz. Au, Percent Weight, Oz. Au, Percent ton percent conc. ton Au recov. percent 11 Au recov.
59s. 0 0. 320 5. 92 10. 9 1 4. 020 84. 05 94. 0s 0. 055 15. 95 904. 2 0. 321 3. 2e 30. 1/1 7. 900 79. 20 90. 14 0. 010 20. so 505. 4 0. 325 1. 22 92. 0 1 21. 913 82. 45 03. 7s 0. 05s 11. 54 000. 0 0. 30s 5. 11 19. 3 1 4 900 32. 14 94. 83 0. 05s 11. so 603. 5 0. 319 4. 2s 23. 0 1 5. 200 92. 13 95. 11 0. 000 11. 81
per ton of potassium secondary butyl xanthate, Example 4 0.03 lb. per ton of a fifty-fifty mixture of sodium diethyland disecondary butyl-dithiophosphates, and 0.062 lb. per ton of pine oil. The following gangue modifiers were also used: 1.0 lb per ton of water-soluble nigrosine in test #7, 1.0 lb. per ton of a stilbene dye, sun yellow, in test #8, 1.0 lb. per ton of an anthraquinone dye, alizarin saphirol B, in test #9, and no gangue modifier in test #6.
A copper ore containing about 1% Cu and about 64% insoluble, including a large amount of talcose material, was subjected to flotation with and without water-soluble nigrosine as a gangue modifier. In test #16 the ore was conditioned first with 0.25 lb. per ton of water-soluble nigrosine and then with 0.15 lb. per ton of potassium Feed Concentrate Telling Test No.
G Oz. Au, Weight, Ratio Oz. Au, Percent Weight, Oz. Au, Percent ton percent conc. ton Au recov. percent ton Au recov.
Example 3 secondary butyl xanthate and 0.0621b. per ton of A gold ore from the Philippine Islands containing gold, pyrite, chalcopyrite, azurite, magpine oil; in test #15 no water-soluble nigrosine was used.
Feed Concentrate Tailing Test No.
G. Percent Percent Ratio Percent g a Percent Percent 6 8 Cu weight conc. Cu tecov welght Cu rem (1 sows As demonstrated by theabove examples, the use of the dyes as gangue modifiers in the case of both the gold ores and the copper ore resulted in an increased ratio of concentration.
Example 5 SEARCH R00? 2. A method of froth flotation of materials containing floatable metals or metal compounds and finely divided carbonaceous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide, which comprises subjecting the material to flotation in the presence of a collector without removing the gangue and depressing the gangue by means of an effective amount of a dyestuff containing a solubilizing group included in the group consisting of carboxyl, sulfonic, and their salts.
3. A method of froth flotation of materials containing floatable metals or metal compounds and sing (test #17). finely divided substantially barren non-metallif- Feed Concentrate 'Iailing Test No.
G 0500:, Weight, Ratio C8003, ggg g Weight, 0300., 333 percent percent cone. percent recov? percent percent It will be noted that by the use of water-soluble nigrosine. an increase in weight, recovery, grade of concentrate, and recovery of CaCOa in concentrate resulted.
Example 6 Tests have shown that the behaviour of gangue depressants for carbonaceous precious metal ores can be accurately predicted by their action on pure graphite in a small laboratory flotation machine. The results are completely reliable qualitatively and reliable quantitatively with a moderate degree of accuracy. A large number of dyes were tested out in the laboratory machine for their action on graphite slime, the tests being erous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide, which comprises subjecting the material to flotation in the presence of a collector without removing the gangue and depressing the gangue by means of an effective amount of water-soluble nigrosine.
4. A method of froth flotation of materials containing floatable metals or metal compounds and finely divided carbonaceous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide, which comprises subjecting the material to flotation in the presence of a collector as follows: without removing the gangue and depressing the Floated Tailings No. of Feed, Floated, l gs. percent percent dye color Dye name Dye class weight weight Index N in wet r sol Azine 25. l l. 3 23. 8 5. 18 94. 82 865 ln gi i ii ne fu f do 25. 0 9. 3 15- 7 37- 20 62. Diamond Black PV. Azo (chrome) 25.0 1.3 23. 7 5. 20 94. 80 Alizarin Saphirol B Azitlagaquinone 25.2 0.9 24.3 3.57 96.43 1054 am Allzarin Sky Blue B .do 25. 2 1. 8 23. 4 7.14 92. 86 1088 Methyl Cotton Blue. Triiphsiylmethane 25. l 1.4 23. 7 5. 58 94. 42 706 no Patent Blue A do 25.2 2. 4 22. 8 9. 52 90. 48 714 Diamine Green B Azo (direct) 25. l 8.4 16. 7 33. 47 66. 53 593 Spirit Orange Am (acid) 25. 2 2. 7 22. 5 10. 71 89. 29 Spirit Red do 24. 9 l. 9 23. 0 7. 63 92. 37 652 Violamine R Xenthene (acid) 25.2 3. 4 21.8 13.49 86.51 758 Methyl Violet B Trdphenylmethane 25. l 8.2 16. 9 32. 67 67. 33 680 asic Sun Yellow Stilbene (direct) 24. 7 0. 7 0 83 97. 17 620 Sap Brown Sol. Earth oolor 25. l 4.3 8 13 32. 87
2; it i3? uinoline e ow uino ins aci yanthrolG Antiifiaquinone 25.1 1.7 2 .4 .77 93.23 1077 The results of these tests indicate that the dyes are efiective depressants for graphite.
What I claim is:
1. A method of froth flotation of materials containing floatable metals or metal compounds and finely divided substantially barren non-metalliferous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide, which comprises subjecting the material to flotation in the presence of a collector without removing the gangue and depressing the gangue by means of an effective amount of a dyestuif containing a solubilizing group included in the group consisting of carboxyl, sulfonic, and their salts.
gangue by means of an effective amount of watersoluble nigrosine.
5. A method of froth flotation of materials containing fioatable metals or metal compounds and finely divided substantially barren non-metalliferous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide, which comprises subjecting the material to flotation in the presence of a collector wthout removing the gangue and depressing the gangue by means of an effective amount of sun yellow.
6. A method of froth flotation of materials containing floatable metals or metal compounds and finely divided carbonaceous gangue which normally exerts a deleterious action on flotation, said materials being substantially free from molybdenum sulfide, which comprises subjecting the material t6 flotation in the presence of a collector without removing the gangue and depressing the gangue by means of an effective amount of sun yellow.
7. 'A method of froth flotation of carbonaceous precious metal ores which comprises carrying out the froth flotation without preliminary removal of carbonaceous gangue and depressing the gangue by means of a dyestufi having solubilizing groups included in the group consisting of carboxyl, sulfonic and their salts.
8. A method of froth flotation of carbonaceous precious metal ores which comprises carrying out the froth flotation without preliminary removal of carbonaceous gangue and depressing the gangue by means of water-soluble nigrosine.
9. A method of froth flotation of carbonaceous precious metal ores which comprises carrying out the froth flotation without preliminary removal of carbonaceous gangue and depressing the gangue by means of sun yellow.
10. A method of froth flotation of non-metallics in the presence of finely divided gangue which,
normally exerts a deleterious action on flotation which comprises carrying out the flotation without removing the fine gangue and depressing the gangue by means of a dyestufi having solubilizing groups included in the group consisting of carboxyl, sulfonic and their salts.
11. A method of froth flotation of non-metallies in the presence of finely divided gangue which comprises carrying out the flotation without removing the fine gangue and depressing the gangue by means of water-soluble nigrosine.
12. A method according to claim 10 in which the material floated is a cement rock raw material.
13. A method according to claim 11 in which the material floated is a cement rock raw ma- 20 terial.
ROBERT B. BOOTH.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US216291A US2211686A (en) | 1938-06-28 | 1938-06-28 | Depression of gangue during flotation |
GB14989/39A GB529013A (en) | 1938-06-28 | 1939-05-19 | Improvements in and relating to froth flotation |
FR855818D FR855818A (en) | 1938-06-28 | 1939-06-06 | Flotation process for silt matrix ores |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US529013XA | 1938-06-28 | 1938-06-28 | |
US855818XA | 1938-06-28 | 1938-06-28 | |
US216291A US2211686A (en) | 1938-06-28 | 1938-06-28 | Depression of gangue during flotation |
Publications (1)
Publication Number | Publication Date |
---|---|
US2211686A true US2211686A (en) | 1940-08-13 |
Family
ID=27368299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US216291A Expired - Lifetime US2211686A (en) | 1938-06-28 | 1938-06-28 | Depression of gangue during flotation |
Country Status (2)
Country | Link |
---|---|
US (1) | US2211686A (en) |
GB (1) | GB529013A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2740522A (en) * | 1953-04-07 | 1956-04-03 | American Cyanamid Co | Flotation of ores using addition polymers as depressants |
US3400817A (en) * | 1966-03-10 | 1968-09-10 | Miami Copper Company | Process and reagent for recovery of molybdenite from copper sulfide-molybdenite flotation concentrates |
-
1938
- 1938-06-28 US US216291A patent/US2211686A/en not_active Expired - Lifetime
-
1939
- 1939-05-19 GB GB14989/39A patent/GB529013A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2740522A (en) * | 1953-04-07 | 1956-04-03 | American Cyanamid Co | Flotation of ores using addition polymers as depressants |
US3400817A (en) * | 1966-03-10 | 1968-09-10 | Miami Copper Company | Process and reagent for recovery of molybdenite from copper sulfide-molybdenite flotation concentrates |
Also Published As
Publication number | Publication date |
---|---|
GB529013A (en) | 1940-11-12 |
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