US2380698A - Beneficiation of acidic minerals - Google Patents
Beneficiation of acidic minerals Download PDFInfo
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- US2380698A US2380698A US437034A US43703442A US2380698A US 2380698 A US2380698 A US 2380698A US 437034 A US437034 A US 437034A US 43703442 A US43703442 A US 43703442A US 2380698 A US2380698 A US 2380698A
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- US
- United States
- Prior art keywords
- ore
- flotation
- acidic
- imidazole
- phosphate
- 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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- 230000002378 acidificating effect Effects 0.000 title description 16
- 229910052500 inorganic mineral Inorganic materials 0.000 title description 9
- 239000011707 mineral Substances 0.000 title description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 27
- 239000003153 chemical reaction reagent Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 16
- 238000005188 flotation Methods 0.000 description 15
- 238000009291 froth flotation Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 10
- 229910019142 PO4 Inorganic materials 0.000 description 9
- 239000010452 phosphate Substances 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 8
- 239000000377 silicon dioxide Substances 0.000 description 7
- -1 chlor-methyl myristyl Chemical group 0.000 description 6
- 239000002367 phosphate rock Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 150000002460 imidazoles Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- KOFZTCSTGIWCQG-UHFFFAOYSA-N 1-bromotetradecane Chemical compound CCCCCCCCCCCCCCBr KOFZTCSTGIWCQG-UHFFFAOYSA-N 0.000 description 2
- RTPNWCIVGAAFKV-UHFFFAOYSA-N 1-tetradecyl-1H-imidazol-1-ium bromide Chemical compound [Br-].C(CCCCCCCCCCCCC)[NH+]1C=NC=C1 RTPNWCIVGAAFKV-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 229910052585 phosphate mineral Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- PBLNBZIONSLZBU-UHFFFAOYSA-N 1-bromododecane Chemical compound CCCCCCCCCCCCBr PBLNBZIONSLZBU-UHFFFAOYSA-N 0.000 description 1
- JMTFLSQHQSFNTE-UHFFFAOYSA-N 1-dodecylimidazole Chemical compound CCCCCCCCCCCCN1C=CN=C1 JMTFLSQHQSFNTE-UHFFFAOYSA-N 0.000 description 1
- LAFJBMOTXPJRNR-UHFFFAOYSA-N 1-dodecylimidazole;hydrochloride Chemical compound Cl.CCCCCCCCCCCCN1C=CN=C1 LAFJBMOTXPJRNR-UHFFFAOYSA-N 0.000 description 1
- UWLHSHAHTBJTBA-UHFFFAOYSA-N 1-iodooctane Chemical compound CCCCCCCCI UWLHSHAHTBJTBA-UHFFFAOYSA-N 0.000 description 1
- TZMGRMKTZVQDMX-UHFFFAOYSA-N 1-tetradecylimidazole Chemical compound CCCCCCCCCCCCCCN1C=CN=C1 TZMGRMKTZVQDMX-UHFFFAOYSA-N 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-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
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 239000002168 alkylating agent Substances 0.000 description 1
- 229940100198 alkylating agent Drugs 0.000 description 1
- 230000002152 alkylating effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000012237 artificial material Substances 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229940067592 ethyl palmitate Drugs 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- XQHTWCIWGQDGOI-UHFFFAOYSA-N hexadecyl 2-chloroacetate Chemical compound CCCCCCCCCCCCCCCCOC(=O)CCl XQHTWCIWGQDGOI-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 235000019988 mead Nutrition 0.000 description 1
- 229910052627 muscovite Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 239000010665 pine oil Substances 0.000 description 1
- QWOXSTGOGUNUGF-UHFFFAOYSA-N platynecine Natural products C1CC(O)C2C(CO)CCN21 QWOXSTGOGUNUGF-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052611 pyroxene Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052566 spinel group 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
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/06—Phosphate 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
- Y10S209/902—Froth flotation; phosphate
Definitions
- the present invention relates to mineral concentrations and more particularly relates to a new class of reagents for selectively separating acidic minerals from other ore constituents.
- the present invention relates to the use of higher alkyl derivatives of imidazole and salts thereof, as promoters or collectors for acidic minerals in froth flotation, film flotation, stratiiication, agglomeration,
- the present invention is not limited to any particular ore concentrating process utilizing differential surface wettability principles or to any particular ore, its most important held of usefulness is in connection with froth flotation processes of separating silica or silicate minerals, such as. mica, from nonmetallic ores such as limestone, bauxite, barytes, liruenite, calcite, and the like, and especially phosphate minerals wherein the silicious gangue is floated away from the phosphate minerals.
- natural ores or artificial materials comprising a mixture of other mineral constituents are subjected to a separation or concentration process in the presence oi a promoter for the acidic ore minerals, said promoter being a higher aliryl derivative of imidazole.
- the reagents of the present invention are efiective promoters or collectors for negatively charged or acidic ore materials generally and said acidic-material may either he worthless gangue or valuable ore constituents.
- the mostimportant uses are, however, in connection with the froth flotation of silica from non-metallic ores'in which'the silicious gangue may represent a minor proportion of the ore rather than metallic and sulfide ores in which the gangue usually represents the major proportion of ,the ore.
- Representative acidic-ore materials are the ieldspars. quartz, pyroxenes, the spinels, biotite, muscovite,v clays, and the like.
- an radical containing from essary that they be used cerned with any method for preparing the alkyl derivatives of imidaz'ole and' any satisfactory method may be employed. They can be conveniently prepared by the reaction of an alkyl halide with imidazole, in which case the hydrohalide salts of the alkylated imidazole are obtained. The following preparation will serve to illustrate a process for preparin a representative compound.
- alkyiating agents such as octyl iodide, lauryl bromide, iauryl chloride, cetyl chlor-acetate, chlor-methyl myristyl ethe heta-chlor-ethyl palmitate, etc. It is clear, of course, that when monoallrylated derivatives of imidazole are prepared the alkylating agent must he one containing at least 8 but usually not more than 30 carbon atoms. Similarly, when desired, crude mixtures of the alkylating reagents may be employed.
- Representative compounds that can he used in carrying out the present invention include the following: N-myristyl imidazole hydrobromide, N-ethyl-N'-lauryl imidazole hydrochloride, N- (lauroyl-beta-hydroxyethyl) imidazole hydrochloride, N-lauryl imidazole hydrochloride.
- salts other than the-hydrohallde salts may be utilized, such as the nitrate, acetic, fol-mate, propionate or other low molecular organic acid salts.
- the present inventlon is not limited to the treatment of any particular'ore material, it has been found to be well suited for froth flotation of silica from phosphate rock and is the preferred emboditherefore an advantage ofthis invention that our reagents not only effect satisfactory removal of the silica but are also economical in amounts used.
- the quantities required range from 0.2 pound per ton of ore depending upon the particular ore and the particular reagent. The invention is not, however, limited to such quantities.
- the reagents of the present invention may be used alone or in mixtures with other promoters. They may likewise be used in conjunction with other cooperating materials such as-conditioning reagents, oily or fat materials such as hydrocarbon oils, fatty acids, or fatty acid esters.
- a flotation test as follows was -made on a sample of Florida phosphate rock from the 01d was diluted to 22% solids with water and transferred to a laboratory size Fagergren flotation machine. The particular reagent or reagent combination was then added and conditioned with the pulp for three seconds. Air was then admitted to the machine and the resulting concentrate froth was collected until the froth became barren. The flotation test product was then filtered, dried, weighed, and assayed. The metallurgical data obtained in the test are presented in the following be very economically concentrated by using table.
- the condition may be varied in accordance with procedures known to those skilled in the art.
- the reagent may be employed in the form of aqueous solutions, emulsions, mixtures, or solutions in organic solvents, such as alcohol and the like.
- the reagent may be introduced into the ore .pulp prior to the actual concentration operation. They may also be stage fed into the flotation circuit.
- the present invention is utilized for the treatment of non-metallic v ore materials but it, is to be understood that our reagents under proper conditions may be used advantageously for the treatment of metallic ore materials.
- our reagent may be employed in flotation processes for removing the silica therefrom and the tailings resulting from such processes are much higher in iron content'than concentrates produced by the conventional soap flotation 0f the iron minerals.
- step which comprises subjecting the ore to froth pulp of the ore to froth flotation in the presence of a collector adapted to selectively float a major portion of the acidic silicious gangue and selected from the group consisting of products rep resented by the formula:
- R represents a higher alkyl radical containing from about eight to thirty carbon atoms and the salts of such products.
- step 6 which comprises subjecting a 'pulp of the ore to froth flotation in the presence of a collector for the acidic silicious gangue selected from the group consisting of N-myristyl imidazole and salts thereof.
- a process of concentrating phosphate ore values from ores containing acidic silicious gangue the step which comprises subjecting a pulp of the ore to froth flotation in the presence of a collector for the acidic silicious gangue selected from the group consisting of N-lauryl imidazole and salts thereof.
- step which comprises subjecting a pulp of the ore to froth flotation inthe presence of a, coliector'ior the acidic silicious gangue selected from the group consisting of N-(lauroylbeta-hydroxyethyl) imidazole and salts thereof.
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Description
' acidic minerals with 2,380,698 BENEFICIATION F ACIDIC MINERALS David W. Jayne, Jr., Old Greenwich, Harold M.
Day, Cos Cob, Conn., assignors to pany, New York, N.
and Elmer W.
American Cyanamid Com- Y., a corporation of Maine Gieseke, Stamford,
8 Claims.
The present invention relates to mineral concentrations and more particularly relates to a new class of reagents for selectively separating acidic minerals from other ore constituents.
Still more particularly, the present invention relates to the use of higher alkyl derivatives of imidazole and salts thereof, as promoters or collectors for acidic minerals in froth flotation, film flotation, stratiiication, agglomeration,
'tahling and related mineral separation processes. While the present invention is not limited to any particular ore concentrating process utilizing differential surface wettability principles or to any particular ore, its most important held of usefulness is in connection with froth flotation processes of separating silica or silicate minerals, such as. mica, from nonmetallic ores such as limestone, bauxite, barytes, liruenite, calcite, and the like, and especially phosphate minerals wherein the silicious gangue is floated away from the phosphate minerals.
In accordance with this invention natural ores or artificial materials comprising a mixture of other mineral constituents are subjected to a separation or concentration process in the presence oi a promoter for the acidic ore minerals, said promoter being a higher aliryl derivative of imidazole.
The reagents of the present invention are efiective promoters or collectors for negatively charged or acidic ore materials generally and said acidic-material may either he worthless gangue or valuable ore constituents. The mostimportant uses are, however, in connection with the froth flotation of silica from non-metallic ores'in which'the silicious gangue may represent a minor proportion of the ore rather than metallic and sulfide ores in which the gangue usually represents the major proportion of ,the ore. Representative acidic-ore materials are the ieldspars. quartz, pyroxenes, the spinels, biotite, muscovite,v clays, and the like.
The compounds'which we have foundto be useful in carrying out the present invention are the higher alkyl derivatives of imidazole and may be represented by the following general formula:
that is to say, an radical containing from essary that they be used cerned with any method for preparing the alkyl derivatives of imidaz'ole and' any satisfactory method may be employed. They can be conveniently prepared by the reaction of an alkyl halide with imidazole, in which case the hydrohalide salts of the alkylated imidazole are obtained. The following preparation will serve to illustrate a process for preparin a representative compound. 1
A solution of- 1 gram of imidazole and 2 grams of myristyl bromide in 50 cc. of anhydrous ethanol was boiled under a reflux condenser for hours. The alcohol was then removed by evaporation on a steam-hath. The product, the hydrobromide of N-myristyi imidazole, was a water soluble, cream-colored paste.
instead of myristyl bromide we may use other alkyiating agents such as octyl iodide, lauryl bromide, iauryl chloride, cetyl chlor-acetate, chlor-methyl myristyl ethe heta-chlor-ethyl palmitate, etc. It is clear, of course, that when monoallrylated derivatives of imidazole are prepared the alkylating agent must he one containing at least 8 but usually not more than 30 carbon atoms. Similarly, when desired, crude mixtures of the alkylating reagents may be employed.
Representative compounds that can he used in carrying out the present invention include the following: N-myristyl imidazole hydrobromide, N-ethyl-N'-lauryl imidazole hydrochloride, N- (lauroyl-beta-hydroxyethyl) imidazole hydrochloride, N-lauryl imidazole hydrochloride.
' We prefer to use these compounds in the form of their hydrohalide salts since they are either water soluble or readily dispersible in aqueous solutions. on the other hand, it is not necin the form of salts, and satisfactory results can be obtained using the free base providing that satisfactory dispersion and distribution is effected. -When desired, salts other than the-hydrohallde salts may be utilized, such as the nitrate, acetic, fol-mate, propionate or other low molecular organic acid salts. Sim- While, as stated heretofore, the present inventlon is not limited to the treatment of any particular'ore material, it has been found to be well suited for froth flotation of silica from phosphate rock and is the preferred emboditherefore an advantage ofthis invention that our reagents not only effect satisfactory removal of the silica but are also economical in amounts used. The quantities required range from 0.2 pound per ton of ore depending upon the particular ore and the particular reagent. The invention is not, however, limited to such quantities.
- The reagents of the present invention may be used alone or in mixtures with other promoters. They may likewise be used in conjunction with other cooperating materials such as-conditioning reagents, oily or fat materials such as hydrocarbon oils, fatty acids, or fatty acid esters.
These new reagents are also adaptable for use in any of the ordinary concentrating processes such'as fllm flotation, tabling, and particularly in froth flotation operations. The ore concentrating processes employed will depend upon the processed. For example, in connection with phosphate rock, relatively coarse phosphate bearing material, for example 28'mesh and larger, can
2,380,698 325.011 flled March 20, 1940, and the Mead and Maust application Serial No. 320,121 filed February 21, 1940, which describes a'process for classifying and desliming phosphate flotation feed by means of a hindered settling classifler and which deslimed feed is well suited for treatment in accordance with this invention.
This invention will be further illustrated by the following specific test which illustrates a I preferred embodiment thereof, but is not to be strictly limited thereby.
A flotation test as follows was -made on a sample of Florida phosphate rock from the 01d was diluted to 22% solids with water and transferred to a laboratory size Fagergren flotation machine. The particular reagent or reagent combination was then added and conditioned with the pulp for three seconds. Air was then admitted to the machine and the resulting concentrate froth was collected until the froth became barren. The flotation test product was then filtered, dried, weighed, and assayed. The metallurgical data obtained in the test are presented in the following be very economically concentrated by using table.
' Table Concentrate mm Food Lbs/ton Test No. Percen Reagent tnsol. Percent Pcrcen Pei-can Percen wt. insol. 80L wt. insol. 86L
1 54.54 as some 91.88 44.79 9.90 8.12 0.50 v Pine oilL. 0.12
1 Nmyristol imidazole hydrobmmide.
these reagents in conjunction with a material such as'fuel oil or pine oil and subjecting to concentration by the use of tables or. by fllmflotation. The 28 phosphate rock material is best concentrated by means of froth flotation employing these improved silica promoters.
When the reagents of the present invention are employed as promoters in the froth flotation of silica from phosphate rock, which is the preferred embodiment thereof, the condition may be varied in accordance with procedures known to those skilled in the art. The reagent may be employed in the form of aqueous solutions, emulsions, mixtures, or solutions in organic solvents, such as alcohol and the like. The reagent may be introduced into the ore .pulp prior to the actual concentration operation. They may also be stage fed into the flotation circuit.
In its most important aspect the present invention is utilized for the treatment of non-metallic v ore materials but it, is to be understood that our reagents under proper conditions may be used advantageously for the treatment of metallic ore materials.
Other improved phosphate flotation features which are known may be utilized in connection with the'present invention such as splitting the phosphate flotation feed into'a plurality of size ranges and floating each size separately as de-*- scribed-in the U. S. Patent No. 2,156,245, the very complete removal of the slime'prior to flotation which is also an aid to better results as pointed out in the Erickson application, Serial No.
When rake classifier sands such as those produced from the tailings at the Valley Forge Cement Company plants are treated by flotation using our reagents, the alumina in the form of mica, is removed in part from the silicious material anda cement product is produced which has greatly improved properties. I
In the treatment of iron ores we have found that our reagent may be employed in flotation processes for removing the silica therefrom and the tailings resulting from such processes are much higher in iron content'than concentrates produced by the conventional soap flotation 0f the iron minerals.
What we claim is: a
1. In the flotation process of separating acidic silicious gangue from phosphate ore values. the step which comprises subjecting the ore to froth flotation in the presence of N-myristyl imidazole hydrobromide.
2. In the flotation process of separating acidic silicious gangue from phosphate ore values, the
step which comprises subjecting the ore to froth pulp of the ore to froth flotation in the presence of a collector adapted to selectively float a major portion of the acidic silicious gangue and selected from the group consisting of products rep resented by the formula:
ti -H where R represents a higher alkyl radical containing from about eight to thirty carbon atoms and the salts of such products.
6. In a process of concentrating phosphate ore values from ores containing acidic silicious gangue, the step which comprises subjecting a 'pulp of the ore to froth flotation in the presence of a collector for the acidic silicious gangue selected from the group consisting of N-myristyl imidazole and salts thereof.
7. In a process of concentrating phosphate ore values from ores containing acidic silicious gangue, the step which comprises subjecting a pulp of the ore to froth flotation in the presence of a collector for the acidic silicious gangue selected from the group consisting of N-lauryl imidazole and salts thereof. I
8. In a process of concentrating phosphate ore values from ores containing acidic silicious gangue, the step which comprises subjecting a pulp of the ore to froth flotation inthe presence of a, coliector'ior the acidic silicious gangue selected from the group consisting of N-(lauroylbeta-hydroxyethyl) imidazole and salts thereof.
DAVID W. JAYNE, JR. HAROLD M. DAY. ELMIER. W. GIESEKE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US437034A US2380698A (en) | 1942-03-31 | 1942-03-31 | Beneficiation of acidic minerals |
Applications Claiming Priority (1)
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US437034A US2380698A (en) | 1942-03-31 | 1942-03-31 | Beneficiation of acidic minerals |
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US2380698A true US2380698A (en) | 1945-07-31 |
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US437034A Expired - Lifetime US2380698A (en) | 1942-03-31 | 1942-03-31 | Beneficiation of acidic minerals |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494132A (en) * | 1948-03-10 | 1950-01-10 | American Cyanamid Co | Beneficiation of acidic minerals |
US2644580A (en) * | 1949-07-06 | 1953-07-07 | Koppers Co Inc | Mineral flotation |
US3093666A (en) * | 1957-04-01 | 1963-06-11 | Armour & Co | Isothiouronium compounds |
US3681375A (en) * | 1965-07-22 | 1972-08-01 | Basf Ag | Imidazole acetals |
US3990966A (en) * | 1975-04-04 | 1976-11-09 | Thompson-Weinman And Company | Flotation process for purifying calcite |
US4342648A (en) * | 1981-05-05 | 1982-08-03 | Les Services Tmg Inc. | Direct flotation of pyrochlore |
US4892649A (en) * | 1988-06-13 | 1990-01-09 | Akzo America Inc. | Calcium carbonate beneficiation |
US4995965A (en) * | 1988-06-13 | 1991-02-26 | Akzo America Inc. | Calcium carbonate beneficiation |
-
1942
- 1942-03-31 US US437034A patent/US2380698A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494132A (en) * | 1948-03-10 | 1950-01-10 | American Cyanamid Co | Beneficiation of acidic minerals |
US2644580A (en) * | 1949-07-06 | 1953-07-07 | Koppers Co Inc | Mineral flotation |
US3093666A (en) * | 1957-04-01 | 1963-06-11 | Armour & Co | Isothiouronium compounds |
US3681375A (en) * | 1965-07-22 | 1972-08-01 | Basf Ag | Imidazole acetals |
US3990966A (en) * | 1975-04-04 | 1976-11-09 | Thompson-Weinman And Company | Flotation process for purifying calcite |
US4342648A (en) * | 1981-05-05 | 1982-08-03 | Les Services Tmg Inc. | Direct flotation of pyrochlore |
US4892649A (en) * | 1988-06-13 | 1990-01-09 | Akzo America Inc. | Calcium carbonate beneficiation |
US4995965A (en) * | 1988-06-13 | 1991-02-26 | Akzo America Inc. | Calcium carbonate beneficiation |
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