US2628717A - Flotation of ores - Google Patents
Flotation of ores Download PDFInfo
- Publication number
- US2628717A US2628717A US757058A US75705847A US2628717A US 2628717 A US2628717 A US 2628717A US 757058 A US757058 A US 757058A US 75705847 A US75705847 A US 75705847A US 2628717 A US2628717 A US 2628717A
- Authority
- US
- United States
- Prior art keywords
- flotation
- ore
- copper
- mol
- ores
- 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 19
- 238000000034 method Methods 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000009291 froth flotation Methods 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 claims 1
- 239000010949 copper Substances 0.000 description 27
- 229910052802 copper Inorganic materials 0.000 description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 21
- 239000007795 chemical reaction product Substances 0.000 description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 239000012991 xanthate Substances 0.000 description 9
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 230000001143 conditioned effect Effects 0.000 description 8
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- XFSAZBKSWGOXRH-UHFFFAOYSA-N 2-(2-carbonochloridoyloxyethoxy)ethyl carbonochloridate Chemical compound ClC(=O)OCCOCCOC(Cl)=O XFSAZBKSWGOXRH-UHFFFAOYSA-N 0.000 description 6
- 238000003556 assay Methods 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 6
- 239000010665 pine oil Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 150000004763 sulfides Chemical class 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- FZFAMSAMCHXGEF-UHFFFAOYSA-N chloro formate Chemical compound ClOC=O FZFAMSAMCHXGEF-UHFFFAOYSA-N 0.000 description 4
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- RZFBEFUNINJXRQ-UHFFFAOYSA-M sodium ethyl xanthate Chemical compound [Na+].CCOC([S-])=S RZFBEFUNINJXRQ-UHFFFAOYSA-M 0.000 description 4
- 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 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 229910052745 lead Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- -1 glycol chloroformates Chemical class 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- IRZFQKXEKAODTJ-UHFFFAOYSA-M sodium;propan-2-yloxymethanedithioate Chemical compound [Na+].CC(C)OC([S-])=S IRZFQKXEKAODTJ-UHFFFAOYSA-M 0.000 description 2
- 229910052569 sulfide mineral Inorganic materials 0.000 description 2
- WHRZCXAVMTUTDD-UHFFFAOYSA-N 1h-furo[2,3-d]pyrimidin-2-one Chemical compound N1C(=O)N=C2OC=CC2=C1 WHRZCXAVMTUTDD-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- AFWVZAABPOHYMD-UHFFFAOYSA-N 5-butoxy-1,4,2,3,5lambda5-dioxadithiaphospholane 5-oxide Chemical compound P1(=O)(OCCCC)OSSO1 AFWVZAABPOHYMD-UHFFFAOYSA-N 0.000 description 1
- 206010010071 Coma Diseases 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 241001050985 Disco Species 0.000 description 1
- 101100108820 Drosophila ananassae Amy35 gene Proteins 0.000 description 1
- HSRJKNPTNIJEKV-UHFFFAOYSA-N Guaifenesin Chemical compound COC1=CC=CC=C1OCC(O)CO HSRJKNPTNIJEKV-UHFFFAOYSA-N 0.000 description 1
- 235000006173 Larrea tridentata Nutrition 0.000 description 1
- 244000073231 Larrea tridentata Species 0.000 description 1
- 241000784732 Lycaena phlaeas Species 0.000 description 1
- OSRFQTMYJGOSLQ-UHFFFAOYSA-N OC(CC)CO.[Na] Chemical compound OC(CC)CO.[Na] OSRFQTMYJGOSLQ-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052948 bornite Inorganic materials 0.000 description 1
- SXFUPIWGUVVUOC-UHFFFAOYSA-N butan-2-yloxy-butan-2-ylsulfanyl-hydroxy-sulfanylidene-lambda5-phosphane Chemical compound CCC(C)OP(O)(=S)SC(C)CC SXFUPIWGUVVUOC-UHFFFAOYSA-N 0.000 description 1
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical group CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- AOGYCOYQMAVAFD-UHFFFAOYSA-N chlorocarbonic acid Chemical class OC(Cl)=O AOGYCOYQMAVAFD-UHFFFAOYSA-N 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229960002126 creosote Drugs 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229910052949 galena Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VJQGGZWPOMJLTP-UHFFFAOYSA-N octadecane-1,1-diol Chemical compound CCCCCCCCCCCCCCCCCC(O)O VJQGGZWPOMJLTP-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 125000000963 oxybis(methylene) group Chemical group [H]C([H])(*)OC([H])([H])* 0.000 description 1
- YIBBMDDEXKBIAM-UHFFFAOYSA-M potassium;pentoxymethanedithioate Chemical compound [K+].CCCCCOC([S-])=S YIBBMDDEXKBIAM-UHFFFAOYSA-M 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 229910052952 pyrrhotite Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance 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
- B03D1/012—Organic compounds containing sulfur
-
- 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
Definitions
- a method of beneficiating metallic ores Which to t er With e p p d Copper was which comprises subjecting the ore to froth flotap d t & rgren flotation machine, brought tion in the presence of a promoter having as an 170 0 DH of about 5 by addit o of l e, Conditioned essential promotin constituent a compound of with 0.033 lb./ton pine oil and 0.05 1b./ton of the th f 1 reaction product of 2 mol ethyl Xanthate and 1 mol diglycol chloroforrnate and floated 10 minutes to produce a combined concentrate of copper C-SOOO2H4O C2H4O O-01 sulfides and metallic copper.
Description
Patented Feb. 17, 1953 FLOTATION or ones Robert Ben Booth, Springdale, Conn., and John Vivian Hill, Tucson, Ariz., assignors to American Cyanamid Company, New York, N. Y., a corporation of Maine No Drawing. Application June 25, 1947, Serial No. 757,058
8 Claims. 1
This invention relates to a new process -mi--- floating metal ores. Base metal and precious metal ores, particularly of the sulfide type, have been floated in the past in the main by three types of reagents. The first group is the x anthates, the second the dithiophosphates, to a lesser extent thiocarbanilides and similar reagents have been used. While the standard flotation promoters for sulfide minerals give excellent results with the general run of ores, there is room for improvement, particularly with some ores containing both sulfide and oxide metal values. esses of floating metal ores, particularly those containing some sulfides, with a new class ofiprbmoters. These promoters are reaction products of glycol chloroformates with one or two mols of xanthates. The reaction proceeds by a simple mixing of the reagents at room temperature. The compounds appear not to be completelypure chemical compounds in some cases and are probably mixtures. Furthermore, mixtures of two or more xanthates may be used in the reaction. Without limiting the invention to any precise chemical formula for the promoters, we believe it probable that at least a major constituent of The present invention deals with procthe promoters have the following formulae: v
the first applying to products in which one mol of xanthate is reacted with the chloroformate and the second where two mols are so reacted.
In the formulae, one of the simplest glyc'o'ls'fdiglycol, is used for illustrative purposes.
The in-:
vention, however is not limited to the use of renew chemical compounds as they form the subject matter of the co-pending application of-Booth and Light, Serial No. 757,057 filed June 25, 1947 concurrently herewith.
The amount of reagent used with typical ores is of the same orderof magnitude as is the case with xanthates, namely a few hundredths of a limited to some extent.
pound per ton. Other flotation conditions are substantially the same as when xanthates or dithiophosphates are used. This is an advantage of the present invention as ordinary flotation circuits and conditions do not have to be changed in any material way. The novelty of the process of the present invention lies in the use of a new class of promoters.
While it is not essential that the ore be conditioned with the promoter before flotation, we find that with many ores this procedure is dee sirable. Here again the use of the new promoters does not materially change good flotation prac tice.
' Although, as has been stated above, we believe that the promoters. of the present invention are not always pure chemical compounds but often constitute mixtures, it is definitely proven that the improved results which are obtainable with many ores by following the procedure of the present invention are not due to unreacted chloroformate, as this appears to have extremely poor collecting power.
In the following specific examples, comparative tests with standard reagents are given. It should be noted that the flotation art, particularly with ores containing sulfides, has reached so high a state of development that improvements are The present invention does improve to a substantial extent-the re.- coveries obtainable. Particularly with lowgrade ores, the amount of mineral available is small and high recovery becomes essential in order to keep the process within economic limits. The improvement which is obtainable in recovery when the process of the present inventionis. used is, therefore, an important economic factor and per,- mits a substantial lowering in cost with many ores.
Example 1 A copper ore from the southwestern United States containing various sulfide and oxide cop.- per minerals and assaying about 0.90% Cu, was ground with lime and promoter at solids, diluted to 22% solids, and conditioned with 0.072 lb./ton pine oil. Flotation followed for 6 minutes in a Fagergren type flotation machine. A
series of tests using DBL-0.025. lb./ton reaction products of 1 mol of xanthate and 1.mol of diglycol chloroformate were conducted. Also for 3 purpose of comparison, tests were conducted with certain of the starting ingredients of these reaction products, viz., diglycol chloroformate, sodium ethyl xanthate, and potassium amyl xanthate. Metallurgical results follow:
erals was ground at 60% solids, diluted to 22% solids, conditioned for 2 minutes with 5.0 lb./ton sulfuric acid and then 1 minute with 0.21 lb./ton cresylic acid, and floated for 8 minutes in a Fagergren type floating machine. The collectors were It will be noted that glycol chloroformate even in much larger amounts is not a useful collector added to the grind in these tests. Metallurgical results follow:
Collector Used Concentrate 'Iailing Assay, v Assay, Percent Reaction I iorluct lb./tou Percent Permit Cu 2 mol Sodium Ethyl Xanthate 1 mol Diglycol Ghloroformatc 1 890g (1 mol bodium Ethyl Xa'ithate)... (1 mol Potassium Aim-l Xanthate) 0.1 18.0l 89. 32 0. 28 1 mol Diglycol Chloroforn'ate even in comparison with the xanthates themselves. These. latter gave results which Were not as good as is obtainable with the process of the present invention, but of course of an entirely different order of magnitude than the chloroformate itself which cannot properly be considered as a practical promoter.
Example 2 A copper ore from the southwestern United States, generally similar to that used on Example 1. was ground with lime and floated with 0.025 lb./ton of the reaction products of 2 mols sodium isopropyl xanthate or sodium secondary butyl xanthate with 1 mol diglycol chloroformate and 0.07 lb./ton pine oil as frother. A comparative test was run with 0.025 lb./ton of a technical grade disecondary butyldithiophosphate, the standard reagent on this ore. Metallurgical re- Example 4 A zinc ore from the southeastern United States was ground and conditioned with 0.5 lb./ton copper sulfate, 0.015 lb./ton of the reaction product of 1 mol of sodium ethyl xanthate and 1 mol of diglycol chloroformate, and 0.14 lb./ton pine oil. Flotation followed for 4 minutes with an additional 0.04 lb./ ton pine oil added after 2 minutes. From a feed to flotation, assaying 3.07% Zn, 92% of the total zinc was recovered in a concentrate assaying 54.88% Zn. The flotation tailings assayed 0.25% Zn,
Example 5 A Tri-State lead ore containing mainly galena but also some oxidized lead minerals was ground and conditioned with 0.02 lb./ton of the reaction sults follow: P oduct of 1 mol of sodium ethyl xanthate and 1 I Concentrate,
Percent Cu Tailing G ollector Used-Reaction Product I v Distri- Cu Assay bution 2 mol Sodium isopropyl xanthate 1' mol llgillyenl chlsrol'oriat%h..t..... 51 21 2 mol Otassium my an a e 1 mol Diglycol chloroformate. 92 50 20 Disco. butyldithiophosphate (alone) 16. 96 75. ()4 0.25
It will be noted that a substantial reduction in the copper content of the tailings was obtained with the above-listed reaction products as compared to the standard dithiophosphate reagent used on this ore.
Example 3 A South American copper ore containing about 2.3% Cu as both sulfide and oxidized copper minmol of diglycol chloroformate and 0.18 lb./ton
creosote oil. The ground pulp was diluted to 22% solids, conditioned for 0.5 minutes with mixed amyl alcohols as frother, and floated 4 minutes. From a feed to flotation assaying 2.76% Pb, 81.60% of the total lead was recovered in a concentrate assaying 53.73% Pb. The assay of the tailing was 0.53% Pb.
Example 6 Because of their high stability reagents of this in which R is an alkyl radical and Z is a radical selected from the group consisting of C1 and type are suited especially to flotation in acid cir- CO cuits, particularly the high acid concentrations 1.! used in the recovery of copper by the leaching-- 5 precipitation-flotation process. Metallic copper The melfihnd collcentratmg sulphlde Ore is readily floated by these promoters either in the Whlch comm 159s sumeclnng the i form of presence or absence of sulfide minerals as is coma pulp to fmth fio?atlor Opemmon the pres moninleachmrecipitatien practica ence of a compouno having the structural for- A southwestern copper ore containing 1.29% 10 mum: total copper (0.82% sulfide copper and 0.47% OR non-sulfide copper) was ground and leached with I l sulfuric acid at a pH of 1.5. The pH Was adjusted T fi fi if to about 2.8 by addition of lime and the dissolved S 0 0 8 pp r precipitated y means f iron- The in which R. and R." are alkyl radicals. pre p ant was screened from the ore P p 3. A method of beneficiating metallic ores Which to t er With e p p d Copper Was which comprises subjecting the ore to froth flotap d t & rgren flotation machine, brought tion in the presence of a promoter having as an 170 0 DH of about 5 by addit o of l e, Conditioned essential promotin constituent a compound of with 0.033 lb./ton pine oil and 0.05 1b./ton of the th f 1 reaction product of 2 mol ethyl Xanthate and 1 mol diglycol chloroforrnate and floated 10 minutes to produce a combined concentrate of copper C-SOOO2H4O C2H4O O-01 sulfides and metallic copper. The tailings from H [I H the flotation operation assayed 0.06% total copper and 0.03% non-sulfide copper. About 95% of in Whlch R is an alkyl Tadlcalthe copper was recovered 4. A method according to claim 2 in which the ore is a copper ore containing sulfides of copper. Example 7 5. A method according to claim 3 in which the A copper ore (about 0.95% Cu) from the ore is a copper ore containing sulfides of copper. southwestern United States, containin chal- 6. A method according to claim 2 in which the copyrite, bornite, pyrite, pyrrhotite, iron oxides, ore is a zinc ore. quartz, carbonates and silicates was ground with 7. A method according to claim 3 in which the the collector and lime, conditioned at flotation ore is a zinc ore. density with 0.07 Ila/ton pine oil, and floated for 8. A method according to claim 2 in which the 6 minutes. Reaction products of various glycol ore is a lead ore. chloroformates (1 mol) Xanthates (2 mols) were ROBERT BEN BOOTH. used as collectors. Metallurgical results follow: JOHN VIVIAN HILL.
Concentrate Telling, Xauthatc 2111015 Ohloroformate ofg-gig Percent 5 5 Cu Distr. Assay Assay Sodium Ethyl Ethylene Glycol "0.019 17.20 82. 26" 0.18 Sodium Isopr0pyl do 0.018 14. 66 83.31 0.17 Potassium Amy1 d0 0.019 17.20 84.48 0.15 Sodium Isopropyl Dipropylenc GlycoL. 0.018 15.66 82.41 0.17 D Trimethylene Glycol 0.019 16. 43 83.16 0.17 Octadecanediol 0.027 18.63 77.19 0.23 Trieihylene Glycol 0.021 16.32 81.39 0.18 2Metl1yl,24 Pentanedio1.. 0.013 18.96 76.70 0.22 213110 11624 cliol 0. 020 20. 51 0.20 rDiglycol 0.019 10.45 82.52 0.17 Sodium Sec. Butyl (1 mol) ..(lo 0.018 15. 79 82.63 0.17
i t t CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,652,099 Douglass Dec. 8, 1927 1,684,536 Fischer Sept. 18, 1928 2,048,043 Williams July 21, 1936 2,070,634 Werntz Feb. 16, 1937 2,376,242 Fischer May 15, 1945 2,501,269 Fischer Mar. 21, 1950
Claims (1)
1. A METHOD OF BENEFICIATING METALLIC ORES WHICH COMPRISES SUBJECTING THE ORE TO FROTH FLOTATION IN THE PRESENCE OF A PROMOTER HAVING AS AN ESSENTIAL PROMOTING CONSITUENT A COMPOUND OF THE FORMULA:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US757058A US2628717A (en) | 1947-06-25 | 1947-06-25 | Flotation of ores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US757058A US2628717A (en) | 1947-06-25 | 1947-06-25 | Flotation of ores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2628717A true US2628717A (en) | 1953-02-17 |
Family
ID=25046190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US757058A Expired - Lifetime US2628717A (en) | 1947-06-25 | 1947-06-25 | Flotation of ores |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2628717A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3735931A (en) * | 1972-07-19 | 1973-05-29 | D Weston | Flotation of copper ores |
| US3901450A (en) * | 1969-11-03 | 1975-08-26 | David Weston | Flotation with xanthate |
| US4191641A (en) * | 1978-01-26 | 1980-03-04 | Mineric Corporation | Flotation process with use of xanthogen chloropropyl formate reagents |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1652099A (en) * | 1926-10-25 | 1927-12-06 | Du Pont | Process of concentrating ores and minerals by flotation |
| US1684536A (en) * | 1927-01-24 | 1928-09-18 | Guggenheim Brothers | Flotation process |
| US2048043A (en) * | 1931-05-06 | 1936-07-21 | Du Pont | Method for the preparation of thiuram monosulphides |
| US2070634A (en) * | 1935-07-05 | 1937-02-16 | Du Pont | Xanthic formates |
| US2376242A (en) * | 1943-09-27 | 1945-05-15 | Mineree Corp | Concentration of ores |
| US2501269A (en) * | 1946-06-26 | 1950-03-21 | Minerec Corp | Froth flotation of sulfide ores |
-
1947
- 1947-06-25 US US757058A patent/US2628717A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1652099A (en) * | 1926-10-25 | 1927-12-06 | Du Pont | Process of concentrating ores and minerals by flotation |
| US1684536A (en) * | 1927-01-24 | 1928-09-18 | Guggenheim Brothers | Flotation process |
| US2048043A (en) * | 1931-05-06 | 1936-07-21 | Du Pont | Method for the preparation of thiuram monosulphides |
| US2070634A (en) * | 1935-07-05 | 1937-02-16 | Du Pont | Xanthic formates |
| US2376242A (en) * | 1943-09-27 | 1945-05-15 | Mineree Corp | Concentration of ores |
| US2501269A (en) * | 1946-06-26 | 1950-03-21 | Minerec Corp | Froth flotation of sulfide ores |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3901450A (en) * | 1969-11-03 | 1975-08-26 | David Weston | Flotation with xanthate |
| US3735931A (en) * | 1972-07-19 | 1973-05-29 | D Weston | Flotation of copper ores |
| US4191641A (en) * | 1978-01-26 | 1980-03-04 | Mineric Corporation | Flotation process with use of xanthogen chloropropyl formate reagents |
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