US2125631A - Process for concentrating oxidized ores by means of froth flotation - Google Patents
Process for concentrating oxidized ores by means of froth flotation Download PDFInfo
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- US2125631A US2125631A US66055A US6605536A US2125631A US 2125631 A US2125631 A US 2125631A US 66055 A US66055 A US 66055A US 6605536 A US6605536 A US 6605536A US 2125631 A US2125631 A US 2125631A
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- pulp
- froth flotation
- acid
- oxidized
- ores
- Prior art date
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- Expired - Lifetime
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- 238000009291 froth flotation Methods 0.000 title description 21
- 238000000034 method Methods 0.000 title description 11
- 239000002253 acid Substances 0.000 description 19
- 150000003839 salts Chemical class 0.000 description 16
- 230000003750 conditioning effect Effects 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000010953 base metal Substances 0.000 description 11
- 239000012141 concentrate Substances 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 8
- 230000007935 neutral effect Effects 0.000 description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- 229910052718 tin Inorganic materials 0.000 description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 7
- 229910052721 tungsten Inorganic materials 0.000 description 7
- 239000010937 tungsten Substances 0.000 description 7
- 238000005188 flotation Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 238000007792 addition Methods 0.000 description 5
- 230000001143 conditioned effect Effects 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 description 5
- 229910052720 vanadium Inorganic materials 0.000 description 5
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 5
- 230000000881 depressing effect Effects 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 239000012991 xanthate Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-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
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 235000017343 Quebracho blanco Nutrition 0.000 description 1
- 241000065615 Schinopsis balansae Species 0.000 description 1
- 241000923606 Schistes Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 description 1
- 239000011609 ammonium molybdate Substances 0.000 description 1
- 229940010552 ammonium molybdate Drugs 0.000 description 1
- 235000018660 ammonium molybdate Nutrition 0.000 description 1
- RBNWAMSGVWEHFP-UHFFFAOYSA-N cis-p-Menthan-1,8-diol Natural products CC(C)(O)C1CCC(C)(O)CC1 RBNWAMSGVWEHFP-UHFFFAOYSA-N 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- TVQLLNFANZSCGY-UHFFFAOYSA-N disodium;dioxido(oxo)tin Chemical compound [Na+].[Na+].[O-][Sn]([O-])=O TVQLLNFANZSCGY-UHFFFAOYSA-N 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 1
- 239000011964 heteropoly acid Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 229930006948 p-menthane-3,8-diol Natural products 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- QWENMOXLTHDKDL-UHFFFAOYSA-N pentoxymethanedithioic acid Chemical compound CCCCCOC(S)=S QWENMOXLTHDKDL-UHFFFAOYSA-N 0.000 description 1
- DHRLEVQXOMLTIM-UHFFFAOYSA-N phosphoric acid;trioxomolybdenum Chemical compound O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.O=[Mo](=O)=O.OP(O)(O)=O DHRLEVQXOMLTIM-UHFFFAOYSA-N 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- CMZUMMUJMWNLFH-UHFFFAOYSA-N sodium metavanadate Chemical compound [Na+].[O-][V](=O)=O CMZUMMUJMWNLFH-UHFFFAOYSA-N 0.000 description 1
- 229940045870 sodium palmitate Drugs 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229940079864 sodium stannate Drugs 0.000 description 1
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- RBNWAMSGVWEHFP-WAAGHKOSSA-N terpin Chemical compound CC(C)(O)[C@H]1CC[C@@](C)(O)CC1 RBNWAMSGVWEHFP-WAAGHKOSSA-N 0.000 description 1
- 229950010257 terpin Drugs 0.000 description 1
- WQEVDHBJGNOKKO-UHFFFAOYSA-K vanadic acid Chemical compound O[V](O)(O)=O WQEVDHBJGNOKKO-UHFFFAOYSA-K 0.000 description 1
- 229910000166 zirconium phosphate Inorganic materials 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
- B03D1/002—Inorganic 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide 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
- conditioning reagents of complex hydrolyzable polyacids and, more specifically, relates to the use of isopolyacidaor the salts thereof of a certain group of metals whosenormal salts or acids, when incorporated in an acid, neutral, or slightly al- 1 kaline solution, are known to-form complex isopolyacids.
- Sulphide minerals generally are easily amenable' and readily lend-themselves to concentration by froth flotation through the use, as flotation reagents, of organic thio-derivatives such as the xanthates.
- Oxidized minerals have been found to be quite refractory to xanthate flotation and attempts at the froth flotation of oxidized values have been, on the whole, not very cupied by an acid radical of the same chemical.
- heteropolyacid is a polyacid in which the position of at least one of the oxy atoms is occupied by an acid radical of a different chemical nature.
- Certain heteropolyacids for instance, phosphomolybdic acid and phosphotungs- 3 tic acid, have been employed in the flotation of "oxidized chrome ores, namely, in the patent to Arnold No. 2,082,817, and have shown some success.
- Additions of reagents to the ore pulp in order to insure the presence therein of the desired isopolyacids may be made in several ways.
- a salt of an isopolyacid of the metals from the group heretofore mentioned may be added directly to the pulp, thereby insuring the presence of the isopolyacid or itssalt in the pulp.
- a chromic ore chromic iron with basic serpentine gangue
- 100 mesh U. S. A. standard
- the pulp is brought into a suitable conditioning tank and slightly alkalized with sodium carbonate, whereupon 0.5 kg. of ammonium molybdate is added.
- This salt has the formula: (NH4)6M07024.4H2O and is therefore an isopolyacid salt. (See Treatise on Chemistry, Roscoe 8i Schorlemmer, MacMillan 8: Co., London, 1913, vol. 2, The Metals, page 1068.) After conditioning for 40 minutes, there are added 2.0 kg.
- a tin ore cassiterite (with schist gangue) is wet crushed to minus 65 mesh (U. S. A. standard). After thickening, 0.02 kg. of sulphuric acid and 0.6 kg. of tungstic acid per ton of pulp are added. In solution in this pulp the tungstic acid will naturally form the isopolyacid of tungsten as hereinbefore shown. After 25 minutes conditioning in the presence of the isopolyacid of tungsten at 30 C. (86 F.) floating ensues in the usual way with 1.2- kg. of sodium palmitate and 0.03 kg. of cresol to the ton.
- Example 3 shows the addition to the pulp of tungstic acid which, in solution, forms the isopolyacid of tungsten as the advantageous conditioning agent.
- the invention therefore, has several aspects and may be accomplished in divers manner.
- the method which comprises subjecting a pulp containing such ores to conditioning in the presence of an isopolyacid of a metal chosen from the group consisting of tin, tungsten, vanadium, germanium, and molybdenum, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
- the method which comprises subjecting a pulp containing such ores to conditioning in the presence of an isopolyacid of molybdenum, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
- the method which comprises subjecting a pulp containing such ores to conditioning in the presence of an isopolyacid of tungsten, and thereafter subjecting the pulp to froth flotation to obtain a concentrate'rich in oxidized values.
- the method which comprises adding to an acid, neutral or slightly alkaline pulp containing such ores, a reagent chosen from the group consisting of stannic acid, tungstic acid, vanadicacid, germanic acid, molybdic acid and their salts, conditioning the thus treated pulp, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
- the method which comprises adding 'molybdic acid or a salt thereof to an acid, neutral or slightly alkaline pulp containing such ores, conditioning the thus treated pulp. and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
- the method which comprises adding stannic acid or a salt thereof to an acid, neutral or slightly alkaline pulp containing such ores, conditioning the thus treated pulp, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
- the method which comprises adding tungstic acid or a salt thereof to an acid, neutral or slightly alkaline oanooma' 0mm.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Description
Patented Aug. 2, .1938
UNITED STATES,
, 2,125,531 PATENT OFFICE PROCESS FOR CONCENTRATING OXIDIZED ORES BY MEANS OF FROTH FLOTATION Grgoire Gutzeit, Geneva, Switzerland, assignor, by mesne assignments, to Visura Treuhand Gesellschaft, Zurich, Switzerland, a corporation of Switzerland No Drawing. Application February 27, 1936, Se-
rial No. 66,055. In Germany March 4, 1935 The invention contemplates the use, as pulp.
conditioning reagents, of complex hydrolyzable polyacids and, more specifically, relates to the use of isopolyacidaor the salts thereof of a certain group of metals whosenormal salts or acids, when incorporated in an acid, neutral, or slightly al- 1 kaline solution, are known to-form complex isopolyacids. r 1
Sulphide minerals generally are easily amenable' and readily lend-themselves to concentration by froth flotation through the use, as flotation reagents, of organic thio-derivatives such as the xanthates. Oxidized minerals, however, have been found to be quite refractory to xanthate flotation and attempts at the froth flotation of oxidized values have been, on the whole, not very cupied by an acid radical of the same chemical.
nature, while a heteropolyacid is a polyacid in which the position of at least one of the oxy atoms is occupied by an acid radical of a different chemical nature. Certain heteropolyacids, for instance, phosphomolybdic acid and phosphotungs- 3 tic acid, have been employed in the flotation of "oxidized chrome ores, namely, in the patent to Arnold No. 2,082,817, and have shown some success.
It isan object of this invention to provide an improvement in the recovery and grade of concentrate in the froth flotation of oxidized base metals through the employment, as conditioning agents, of a group of complex chemical compounds coming within the class of polyacids, and comprising certain compounds from the group known as isopolyacids. 7 It is discovered, asa part of this invention, that conditioning of an ore pulp containing oxidized base metal values in the presence of one or more isopolyacids of metals from the group comprising tin, tungsten, vanadium, molybdenum and germanium, and then subjecting the pulp to: froth flotation by the addition of conventional frothing and collecting reagents, renders. these oxidized valuesreadily amenable to flotation in a concentrate of rich grade. The activating effect of 'hese isopolyacids is believed to be due to the fact so that, after hydrolysis has taken place, semicol- 8 Claims. (01. 209-166) loidal, high molecular systems are adsorbed on I V the surface of the ore particles, thus forming a polar film which allows the combination with the collector.
Additions of reagents to the ore pulp in order to insure the presence therein of the desired isopolyacids may be made in several ways. In one instance a salt of an isopolyacid of the metals from the group heretofore mentioned, may be added directly to the pulp, thereby insuring the presence of the isopolyacid or itssalt in the pulp.
In another instance, the normal salt 'or the normal acid of metals from the group mentioned, may be introduced to the acid, neutral, or slightly alkaline pulp and, when so introduced, will form in solution, the isopolyacid of the particular metal used.
Jander and Jahr in Kolloid. Beihefte, Band 41, pages 1-58, have proven that when the normal salts or acids of the metals, tin, vanadium, molybdenum, tungsten and germanium, are dissolved in acid, neutral or slightly alkaline solutions, they do not behave as do other metals but clearly form their respective complex isopolyacids. Therefore, in order to insure the presence in the pulp of the desired isopolyacid, all that is neecssary is to introduce into the pulp, while it is in acid, neutral or slightly alkaline condition, a normal salt or normal acid of a metal from the group aforementioned. According to an embodiment of the invention, at least one isopolyacid of a metal of the group mentioned is caused to exist in the pulp.
There will be hydrolysis which can be strengthened by means of weak acid or alkaline reagents. Then there must be allowed suflicient time, which can only be determined empirically, for the oxidized values to become thoroughly conditioned by the isopolyacid reagent. Then flotation of the thus conditioned oxidized values is efiected in known manner, preferably with the addition of gang-ue depressing agents, a collector and a frothing agent. The pulp temperature, the concentration of hydrogen ions, and the duration of treat--, ment are to be determined in each instance for the particular ore.
Proceeding in this manner, it will be possible- The working of this process is set forth by the following examples, which, of course, are not meant to be limiting in any way.
1. A chromic ore (chromic iron with basic serpentine gangue) is wet crushed to 100 mesh (U. S. A. standard). After thickening to a ratio of 122-, the pulp is brought into a suitable conditioning tank and slightly alkalized with sodium carbonate, whereupon 0.5 kg. of ammonium molybdate is added. This salt has the formula: (NH4)6M07024.4H2O and is therefore an isopolyacid salt. (See Treatise on Chemistry, Roscoe 8i Schorlemmer, MacMillan 8: Co., London, 1913, vol. 2, The Metals, page 1068.) After conditioning for 40 minutes, there are added 2.0 kg. of water glass (28 B.) as a gangue depressing agent, 1.0 .kg. oleic acid and 0.2 kg. phosphocresylic acid per ton of pulp. Finally,- minutes oiling and floating with 0.02 kg. pine oil, a frothing agent. As a result there is obtained a concentrate showing 58 to 60% chromic .(U. S. A. standard) and conditioned. To the pulp is then added 0.1 kg. of sodium stannate and 0.3 kg. sodium vanadate per ton of pulp. Since the pH of the pulp will naturally be not more than slightly alkaline, the addition of these normal salts will cause the formation in solution of the isopolyacids of tin and vanadium, as-
previously described. After a suitable condi-' tioning period the pulp is treated with 2.5 kg. quebracho bark, in order to depress the gangue. Finally, floating is done at 35 C., (95 F. with 0.75 kg. of stearic acidand 0.05 kg. of amyl xanthate, as collectors, and 0.03 kg. terpin'oil, as a frothing agent. I
3. A tin ore cassiterite (with schist gangue) is wet crushed to minus 65 mesh (U. S. A. standard). After thickening, 0.02 kg. of sulphuric acid and 0.6 kg. of tungstic acid per ton of pulp are added. In solution in this pulp the tungstic acid will naturally form the isopolyacid of tungsten as hereinbefore shown. After 25 minutes conditioning in the presence of the isopolyacid of tungsten at 30 C. (86 F.) floating ensues in the usual way with 1.2- kg. of sodium palmitate and 0.03 kg. of cresol to the ton.
Thus, in the flrst example, a. salt of the isopolyacid of molybdenum is added directly to the ore pulp and the pulp conditioned in the presence of this isopolyacid. In the second example, the normal salts of tin and of vanadium are added toithe pulp, resulting in the formation,-
in solution, of the isopolyacids of these two metals so that the pulp is conditioned in their presence. Example 3 shows the addition to the pulp of tungstic acid which, in solution, forms the isopolyacid of tungsten as the advantageous conditioning agent.
The invention, therefore, has several aspects and may be accomplished in divers manner.
' An isopolyacid salt of at least one of the thorough activation of the oxidized base metal values so that they may be subsequently recovered in a flotation concentrate of high grade,
through the use of relatively small amounts of normal gangue depressing, collecting and frothing agents.
What I claim is:
1. In the concentration by froth flotation of ores containing oxidized base metals, the method which comprises subjecting a pulp containing such ores to conditioning in the presence of an isopolyacid of a metal chosen from the group consisting of tin, tungsten, vanadium, germanium, and molybdenum, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
2. In the concentration by froth flotation of ores containing oxidized base metals, the method which comprises subjecting a pulp containing such ores to conditioning in the presence of an isopolyacid of molybdenum, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values. I
3. In the concentration by froth flotation 0f ores containing oxidized base metals, the method which comprises subjecting a pulp containing such ores to conditioning in the presence of an isopolyacid of tin, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values. I
4. In the concentration by froth flotation of ores containing oxidized base metals, the method which comprises subjecting a pulp containing such ores to conditioning in the presence of an isopolyacid of tungsten, and thereafter subjecting the pulp to froth flotation to obtain a concentrate'rich in oxidized values.
5. In the concentration by froth flotation of ores containing oxidized base metals, the method which comprises adding to an acid, neutral or slightly alkaline pulp containing such ores, a reagent chosen from the group consisting of stannic acid, tungstic acid, vanadicacid, germanic acid, molybdic acid and their salts, conditioning the thus treated pulp, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
6. In the concentration by froth flotation of ores containing oxidized base metals, the method which comprises adding 'molybdic acid or a salt thereof to an acid, neutral or slightly alkaline pulp containing such ores, conditioning the thus treated pulp. and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
7. In the concentration by froth flotation of ores containing oxidized base metals, the method which comprises adding stannic acid or a salt thereof to an acid, neutral or slightly alkaline pulp containing such ores, conditioning the thus treated pulp, and thereafter subjecting the pulp to froth flotation to obtain a concentrate rich in oxidized values.
8. In the concentration by froth flotation of ores containing oxidized base metals, the method which comprises adding tungstic acid or a salt thereof to an acid, neutral or slightly alkaline oanooma' 0mm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2125631X | 1935-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2125631A true US2125631A (en) | 1938-08-02 |
Family
ID=7986158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US66055A Expired - Lifetime US2125631A (en) | 1935-03-04 | 1936-02-27 | Process for concentrating oxidized ores by means of froth flotation |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2125631A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2469422A (en) * | 1943-12-20 | 1949-05-10 | Arthur J Weinig | Selective flotation of chromite ores |
| US3473656A (en) * | 1967-07-28 | 1969-10-21 | Filip Ser | Method of concentrating a chromite-containing ore |
| US3711032A (en) * | 1968-12-13 | 1973-01-16 | D Weston | Flotation of lateritic nickel ores |
| US3860513A (en) * | 1972-01-20 | 1975-01-14 | Porter Hart | Method of recovering mineral values from ore |
-
1936
- 1936-02-27 US US66055A patent/US2125631A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2469422A (en) * | 1943-12-20 | 1949-05-10 | Arthur J Weinig | Selective flotation of chromite ores |
| US3473656A (en) * | 1967-07-28 | 1969-10-21 | Filip Ser | Method of concentrating a chromite-containing ore |
| US3711032A (en) * | 1968-12-13 | 1973-01-16 | D Weston | Flotation of lateritic nickel ores |
| US3860513A (en) * | 1972-01-20 | 1975-01-14 | Porter Hart | Method of recovering mineral values from ore |
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