CN115090422B - Amino acid type collector, and preparation method and application thereof - Google Patents
Amino acid type collector, and preparation method and application thereof Download PDFInfo
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- CN115090422B CN115090422B CN202210692133.4A CN202210692133A CN115090422B CN 115090422 B CN115090422 B CN 115090422B CN 202210692133 A CN202210692133 A CN 202210692133A CN 115090422 B CN115090422 B CN 115090422B
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- amino acid
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- acid type
- type collector
- white paste
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- 150000001413 amino acids Chemical class 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title abstract description 12
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims abstract description 32
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000725 suspension Substances 0.000 claims abstract description 19
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims abstract description 16
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 150000001350 alkyl halides Chemical class 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 8
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 8
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 235000001014 amino acid Nutrition 0.000 claims description 65
- 238000005188 flotation Methods 0.000 claims description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000011707 mineral Substances 0.000 claims description 17
- AJOXZAAREAYBQR-RGMNGODLSA-N diethyl (2s)-2-aminobutanedioate;hydrochloride Chemical compound Cl.CCOC(=O)C[C@H](N)C(=O)OCC AJOXZAAREAYBQR-RGMNGODLSA-N 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 7
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 6
- GLFVNTDRBTZJIY-UHFFFAOYSA-N diethyl 2-aminopropanedioate;hydron;chloride Chemical compound Cl.CCOC(=O)C(N)C(=O)OCC GLFVNTDRBTZJIY-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 239000003814 drug Substances 0.000 abstract description 4
- 230000007935 neutral effect Effects 0.000 abstract description 4
- 239000008396 flotation agent Substances 0.000 abstract description 2
- -1 amino acid diethyl hydrochloride Chemical class 0.000 abstract 2
- 229940024606 amino acid Drugs 0.000 description 53
- 239000010445 mica Substances 0.000 description 10
- 229910052618 mica group Inorganic materials 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 description 8
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 8
- 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 8
- 229910052627 muscovite Inorganic materials 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 239000004115 Sodium Silicate Substances 0.000 description 4
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- CNDHHGUSRIZDSL-UHFFFAOYSA-N 1-chlorooctane Chemical compound CCCCCCCCCl CNDHHGUSRIZDSL-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- COLNVLDHVKWLRT-UHFFFAOYSA-N phenylalanine Natural products OC(=O)C(N)CC1=CC=CC=C1 COLNVLDHVKWLRT-UHFFFAOYSA-N 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- MYMSJFSOOQERIO-UHFFFAOYSA-N 1-bromodecane Chemical compound CCCCCCCCCCBr MYMSJFSOOQERIO-UHFFFAOYSA-N 0.000 description 2
- AYMUQTNXKPEMLM-UHFFFAOYSA-N 1-bromononane Chemical compound CCCCCCCCCBr AYMUQTNXKPEMLM-UHFFFAOYSA-N 0.000 description 2
- GCDPERPXPREHJF-UHFFFAOYSA-N 1-iodododecane Chemical compound CCCCCCCCCCCCI GCDPERPXPREHJF-UHFFFAOYSA-N 0.000 description 2
- FKUQOQPBCHJHAP-UHFFFAOYSA-N 1-iodoundecane Chemical compound CCCCCCCCCCCI FKUQOQPBCHJHAP-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000010433 feldspar Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 2
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 229910052656 albite Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 229910052637 diopside Inorganic materials 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052900 illite Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 125000000467 secondary amino group Chemical class [H]N([*:1])[*:2] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the technical field of flotation agents, and particularly relates to an amino acid type collecting agent, a preparation method and application thereof. The raw materials of the amino acid type collector comprise primary haloalkane, tetrahydrofuran, diethyl amino acid hydrochloride, pyridine absolute ethyl alcohol and alkali. The preparation method of the amino acid type collector comprises the following steps: taking equimolar primary haloalkane and amino acid diethyl hydrochloride, respectively dissolving the primary haloalkane and the amino acid diethyl hydrochloride in tetrahydrofuran and pyridine, uniformly mixing the two, stirring the mixture at 40-60 ℃ for 12-18 hours to obtain a suspension, centrifuging the suspension to obtain a white paste, and washing the white paste with deionized water for 4-6 times; and uniformly mixing the white paste and alkali in absolute ethyl alcohol, and stirring for 20-30 minutes to obtain the collecting agent. The amino acid type collector disclosed by the invention has the characteristics of being close to neutral in the optimal pH value in ore pulp, strong in collecting capacity, good in selectivity, small in medicament dosage, low-temperature-resistant and the like, and has a good market popularization prospect.
Description
Technical Field
The invention belongs to the technical field of flotation agents, and particularly relates to an amino acid type collecting agent, a preparation method and application thereof.
Background
Tailing utilization is an effective way to expand the source of raw materials and reduce the emissions of solid tailings, with economic value inferior to the discovery of one or more new deposits. Taking molybdenum tailings as an example, the tailings mainly comprise co-associated metal and nonmetallic minerals, and for molybdenum tailings with low content of the co-associated metal minerals, difficulties which are difficult to overcome in the aspects of recovery process technology and equipment exist at present, and the independent recovery of the metal minerals is not necessarily economically feasible. Therefore, the recovery of nonmetallic minerals in tailings has important significance for improving the comprehensive utilization rate of resources and improving the quality and the variety of mineral products.
The recyclable nonmetallic minerals in the tailings are various, and the nonmetallic minerals in the tailings in different areas are different, but the nonmetallic minerals are mainly silicate or carbonate. At present, fatty acid and fatty amine are commonly used as collectors for floatation of nonmetallic minerals in tailings, but the solubility and the dispersibility of the two are poor at normal temperature, particularly in a low-temperature environment in winter, heating is often required to ensure the smooth progress of a floatation process; meanwhile, in order to overcome the defect of poor selectivity of a single collector, the two are often combined, and although the single collector shows strong selectivity, the reagent system is complex, and only a good flotation effect is shown in a laboratory, so that the single collector has not been applied to actual production.
The amino acid collector is used as an improvement on the traditional fatty acid and fatty amine collectors, and amino groups and carboxyl groups are simultaneously introduced into a fatty chain through a chemical modification means, so that the amino acid collector can flexibly adjust the acidity and alkalinity of ore pulp in the flotation process to ensure that the amino acid collector has the dual properties of a cationic or anionic collector, thereby showing better selectivity and collection performance on target minerals. Meanwhile, due to the introduction of a large number of polar groups, the solubility and dissociation degree of the collector in water are enhanced, the ion activity of the collector is improved, and the low temperature resistance of the amino acid collector is further enhanced. However, the types of amino acid collectors developed at present are few, most of the amino acid collectors are still synthesized by methods such as a methyl acrylate method, an acrylic acid method, an acrylonitrile method and the like, and the raw material sources are single due to the limitation of the synthesis method, so that the development of the amino acid collectors is greatly limited. Searching for a novel synthesis way, expanding the source of raw materials of products and developing a novel amino acid collector becomes a hot spot of current research.
Disclosure of Invention
The purpose of the invention is that: an amino acid collector is provided. The collecting agent is convenient to use, does not need to be dispersed in acid, alkali or nonpolar oil, and has the characteristics of good selectivity, strong collecting capability and small dosage of medicament. The invention also provides a preparation method and application thereof.
The amino acid type collector has a structural general formula shown in the following formula (I):
in the formula (I), n1=7 to 11; n2=0 to 1; m is Li, na or K;
the amino acid type collecting agent disclosed by the invention comprises the following raw materials in parts by weight:
Wherein:
the structural general formula of the primary haloalkane is shown in the formula (II):
CH 3-(CH2)n -X, formula (II);
In the formula (II), n=7 to 11; x is Cl, br or I.
The amino acid diethyl ester hydrochloride is one of aspartic acid diethyl ester hydrochloride or amino malonic acid diethyl ester hydrochloride.
The alkali is one of lithium hydroxide, sodium hydroxide or potassium hydroxide.
The molar ratio of the primary haloalkane to the diethyl amino acid hydrochloride is 1:1.
The preparation method of the amino acid type collector provided by the invention comprises the following steps:
(1) Weighing primary haloalkane, tetrahydrofuran, diethyl amino acid hydrochloride, pyridine, absolute ethyl alcohol and alkali according to the parts by mol;
(2) Adding tetrahydrofuran into primary haloalkane and mixing uniformly;
(3) Adding pyridine into diethyl amino acid hydrochloride, and uniformly mixing;
(4) Uniformly mixing the solution obtained in the step (2) with the solution obtained in the step (3), and stirring to obtain a suspension;
(5) Centrifuging the suspension obtained in the step (4) to obtain a white paste, and washing the white paste;
(6) Adding alkali into the white paste obtained in the step (5), and stirring for 20-30 minutes by taking absolute ethyl alcohol as a solvent to obtain white solid, namely the amino acid type collector.
Wherein:
Stirring the mixture for 12 to 18 hours at the temperature of between 40 and 60 ℃ in the step (4) to obtain suspension.
And (5) washing the white paste by deionized water for 4-6 times.
The application of the amino acid type collector is mainly applied to enrichment and recovery of nonmetallic minerals in tailings, the dosage range of the amino acid type collector can be flexibly adjusted according to different target mineral contents, and the dosage is generally 200-800 g for each ton of flotation tailings.
Compared with the prior art, the invention has the following beneficial effects:
(1) The amino acid type collector provided by the invention is white solid at normal temperature, is convenient to use, does not need to be dispersed in acid, alkali or nonpolar oil, and has the advantages of good selectivity, strong collecting capacity, small dosage of medicament and the like.
(2) The preparation method of the amino acid type collector has simple process and is easy for industrialized mass production.
(3) The amino acid type collector disclosed by the invention is applied to enrichment and recovery of nonmetallic minerals in tailings, has the characteristics of strong collecting capacity, good selectivity, small medicament dosage, low temperature resistance and the like, and has a good market popularization prospect, and the optimal pH value of the amino acid type collector in ore pulp is close to neutral.
Drawings
FIG. 1 is a synthetic route for an amino acid type collector prepared in example 1;
FIG. 2 is an infrared spectrum of an amino acid type collector prepared in example 1;
FIG. 3 is a flow chart of a process for flotation of muscovite in molybdenum tailings of application example 1;
FIG. 4 is a process flow diagram of flotation of potassium feldspar in gold tailings of application example 2;
Fig. 5 is a process flow diagram for flotation of mica in iron tailings using example 3.
Detailed Description
The invention is further described below with reference to examples.
Example 1
The amino acid type collector described in this example 1 comprises the following raw materials in parts by weight:
The amino acid type collector of the embodiment 1 has a structural general formula shown as the following formula (I):
In formula (I), n1=7; n2=1; m is Na.
The preparation method of the amino acid type collector described in the embodiment 1 comprises the following steps:
adding 20 parts of tetrahydrofuran into 1 part of 1-chlorooctane, adding 20 parts of pyridine into 1 part of diethyl aspartate hydrochloride, uniformly mixing a tetrahydrofuran solution of 1-chlorooctane and a pyridine solution of diethyl aspartate hydrochloride, stirring at 40 ℃ for 12 hours to obtain a suspension, centrifuging the suspension to obtain a white paste, washing the white paste with deionized water for 4 times, adding 2 parts of sodium hydroxide into the washed white paste, and stirring for 20 minutes by taking 10 parts of absolute ethyl alcohol as a solvent to obtain the amino acid type collector.
The synthetic route diagram of the amino acid type collector prepared in the example 1 is shown in the attached figure 1; carrying out infrared spectrum test on the amino acid type collector prepared in the embodiment 1, wherein the obtained infrared spectrum is shown in a figure 2, 3302.57cm -1,1291.52cm-1 is a telescopic vibration absorption peak of N-H, C-N in secondary amine, 2918.88cm -1,2894.72cm-1 is an antisymmetric telescopic vibration absorption peak of C-H in-CH 3、-CH2; 1592.95cm -1、1439.07cm-1 is an antisymmetric, symmetrical telescopic vibration absorption peak of > c=o in carboxyl, which indicates that 1-chlorooctane and diethyl aspartate hydrochloride react chemically, and the amino acid type collector in example 1 is successfully prepared.
Example 2
The amino acid type collector described in this example 2 comprises the following raw materials in parts by weight:
The amino acid type collector of the embodiment 2 has a structural general formula shown in the following formula (I):
in formula (I), n1=9; n2=1; m is K.
The preparation method of the amino acid type collector described in the embodiment 2 comprises the following steps:
adding 30 parts of tetrahydrofuran into 1 part of 1-bromodecane in mol part, adding 30 parts of pyridine into 1 part of diethyl aspartate hydrochloride, uniformly mixing the tetrahydrofuran solution of 1-bromodecane and the pyridine solution of diethyl aspartate hydrochloride, stirring at 50 ℃ for 18 hours to obtain a suspension, centrifuging the suspension to obtain a white paste, washing the white paste with deionized water for 5 times, adding 2 parts of potassium hydroxide into the washed white paste, and stirring for 25 minutes by using 10 parts of absolute ethyl alcohol as a solvent to obtain the amino acid type collector.
Example 3
The amino acid type collector of the embodiment 3 comprises the following raw materials in parts by weight:
the amino acid type collector of this example 3 has a structural general formula shown in the following formula (I):
In formula (I), n1=11; n2=1; m is Na.
The preparation method of the amino acid type collector described in the embodiment 3 comprises the following steps:
According to mole parts, 25 parts of tetrahydrofuran is added into 1 part of 1-iodododecane, 25 parts of pyridine is added into 1 part of diethyl aspartate hydrochloride, the tetrahydrofuran solution of 1-iodododecane and the pyridine solution of diethyl aspartate hydrochloride are uniformly mixed, and are stirred at 60 ℃ for 16 hours to obtain a suspension, the suspension is centrifuged to obtain a white paste, the white paste is washed by deionized water for 6 times, 2 parts of sodium hydroxide is added into the washed white paste, 10 parts of absolute ethyl alcohol is used as a solvent, and the suspension is stirred for 30 minutes to obtain the amino acid type collector.
Example 4
The amino acid type collector described in this example 4 comprises the following raw materials in parts by weight:
The amino acid type collector of this example 4 has a structural general formula shown in the following formula (I):
In formula (I), n1=8; n2=0; m is Na.
The preparation method of the amino acid type collector described in the embodiment 4 comprises the following steps:
According to mole parts, 25 parts of tetrahydrofuran is added into 2 parts of 1-bromononane, 25 parts of pyridine is added into 2 parts of diethyl aminomalonate hydrochloride, the tetrahydrofuran solution of the 1-bromononane and the pyridine solution of diethyl aminomalonate hydrochloride are uniformly mixed, the mixture is stirred at 55 ℃ for 16 hours to obtain a suspension, the suspension is centrifuged to obtain a white paste, the white paste is washed by deionized water for 6 times, 4 parts of sodium hydroxide is added into the washed white paste, 13 parts of absolute ethyl alcohol is used as a solvent, and the mixture is stirred for 30 minutes to obtain the amino acid type collector.
Example 5
The amino acid type collector described in this example 5 comprises the following raw materials in parts by weight:
the amino acid type collector of this example 5 has a structural general formula shown in the following formula (I):
In formula (I), n1=10; n2=1; m is Li.
The method for preparing the amino acid type collector described in the embodiment 5 comprises the following steps:
Adding 30 parts of tetrahydrofuran into 3 parts of 1-iodoundecane, adding 30 parts of pyridine into 3 parts of diethyl aspartate hydrochloride, uniformly mixing a tetrahydrofuran solution of 1-iodoundecane and a pyridine solution of diethyl aspartate hydrochloride, stirring at 45 ℃ for 18 hours to obtain a suspension, centrifuging the suspension to obtain a white paste, washing the white paste with deionized water for 6 times, adding 6 parts of sodium hydroxide into the washed white paste, and stirring for 25 minutes by using 15 parts of absolute ethyl alcohol as a solvent to obtain the amino acid type collector.
Application example 1
The amino acid type collector prepared in example 1 and the combined collector of dodecylamine and sodium dodecyl sulfate are respectively applied to the flotation of muscovite in molybdenum tailings.
The test ore sample is taken from a tailing pond of a molybdenum ore in Liaoning. The minerals in the tailings mainly comprise montmorillonite, diopside, dolomite, muscovite, albite and calcite, wherein the muscovite grade is 2.04% (the muscovite grade is calculated by K 2 O, and the following is the same). Grinding the raw tailings until the raw tailings reach 80% of-0.074 mm, pre-desliming the ground tailings by adopting a small cone angle cyclone with the diameter of 150mm, wherein the concentration of flotation ore pulp is 25%, the temperature of ore pulp is 20 ℃, the environment of neutral ore pulp is that the dosage of sodium silicate is 3000g/t, the dosage of a collecting agent is 500g/t, rough white mica dressing is carried out, 500g/t of sodium silicate is added for one-time concentration, and 250g/t of collecting agent is added for one-time scavenging. The flotation process flow chart is shown in figure 3. The results of the flotation comparison test with the combined collector of dodecylamine/sodium dodecylsulfonate are shown in table 1. As can be seen from Table 1, the collecting agent of example 1 was used to increase the muscovite grade of the flotation concentrate by 0.34% and the recovery rate by 3.91% as compared with the combined collecting agent of dodecylamine/sodium dodecylsulfonate.
Table 1 comparative test of collector flotation muscovite using example 1
Application example 2
The amino acid type collector prepared in the example 1 and the laurylamine/sodium oleate combined collector are respectively applied to the flotation of feldspar in gold tailings.
The sample is taken from a gold mine tailing pond in Shandong, and the tailings mainly comprise minerals such as quartz, potassium feldspar and the like, wherein the grade of the potassium feldspar is 9.07 percent (the grade of the potassium feldspar is calculated by K 2 O, and the following description is given). Grinding the raw tailings until the raw tailings reach-0.074 mm and account for 80%, and carrying out strong magnetic separation to obtain strong magnetic tailings, wherein the strong magnetic tailings are used as flotation feed. The concentration of the flotation ore pulp is 35%, the dosage of sodium hexametaphosphate is 200g/t, and the dosage of the collector is 600g/t, and the potassium feldspar flotation test is carried out. The flotation process flow chart is shown in figure 4. The results of the flotation comparison test with the twelve amine/sodium oleate combined collector are shown in table 2. As is clear from Table 2, the grade of potassium feldspar is improved by 0.94% and recovery rate is improved by 7.11% when the temperature of ore pulp is 20 ℃ compared with that of the twelve-amine/sodium oleate combined collector. When the temperature of ore pulp is 5 ℃, compared with the twelve-amine/sodium oleate combined collector, the collector of the embodiment 1 is adopted, the grade of potassium feldspar is improved by 2.14%, the recovery rate is improved by 17.39%, and the collector of the embodiment 1 has better low temperature resistance than the twelve-amine/sodium oleate combined collector.
TABLE 2 comparative test of collector flotation potassium feldspar using example 2
Application example 3
The amino acid type collector, diethyl aminomalonate hydrochloride and sodium oleate/phenylalanine combined collector prepared in the embodiment 1 are respectively applied to separation of mica in certain iron tailings in Shandong.
The test ore sample is taken from a certain Shandong iron ore tailing pond, and tailings mainly comprise magnetite, quartz, feldspar, mica, kaolin, illite and other minerals, wherein the mica grade is 1.23% (the muscovite grade is calculated by K 2 O, and the following description is given). Firstly, grinding the tailings, controlling the grinding fineness to be 90% of-200 mesh content, and carrying out pre-desliming on ore pulp after grinding by a small cone angle cyclone and then carrying out flotation. The concentration of the flotation ore pulp is 20%, the temperature of the ore pulp is 20 ℃, the ore pulp is neutral, the dosage of sodium silicate is 1000g/t, the dosage of the collector is 500g/t, the dosage of sodium hexametaphosphate is 200g/t, and the mica roughing is carried out. The mica is added with 500g/t of sodium silicate for one time of fine selection and 250g/t of collecting agent for one time of scavenging. The flotation process flow chart is shown in figure 5. The results of the flotation comparison test with the sodium oleate/phenylalanine combination collector are shown in table 3. As is clear from Table 3, diethyl aminomalonate hydrochloride has little ability to collect mica, and the grade of mica is improved by 4.50% and recovery rate is improved by 27.37% compared with the sodium oleate/phenylalanine combined collector using the collector of example 1.
TABLE 3 comparative test of collector flotation mica using example 3
Claims (8)
1. An amino acid type collector, characterized in that: the structural general formula is shown as the following formula (I):
in the formula (I), n1=7 to 11; n2=0 to 1; m is Li, na or K;
the raw materials comprise the following components in parts by mole:
2. the amino acid collector of claim 1, wherein: the structural general formula of the primary haloalkane is shown in the formula (II):
CH 3-(CH2)n -X, formula (II);
In the formula (II), n=7 to 11; x is Cl, br or I.
3. The amino acid collector of claim 1, wherein: the amino acid diethyl ester hydrochloride is one of aspartic acid diethyl ester hydrochloride or amino malonic acid diethyl ester hydrochloride.
4. The amino acid collector of claim 1, wherein: the alkali is one of lithium hydroxide, sodium hydroxide or potassium hydroxide.
5. A method for preparing the amino acid type collector as claimed in claim 1, characterized in that: the method comprises the following steps:
(1) Weighing primary haloalkane, tetrahydrofuran, diethyl amino acid hydrochloride, pyridine, absolute ethyl alcohol and alkali according to the parts by mol;
(2) Adding tetrahydrofuran into primary haloalkane and mixing uniformly;
(3) Adding pyridine into diethyl amino acid hydrochloride, and uniformly mixing;
(4) Uniformly mixing the solution obtained in the step (2) with the solution obtained in the step (3), and stirring to obtain a suspension;
(5) Centrifuging the suspension obtained in the step (4) to obtain a white paste, and washing the white paste;
(6) Adding alkali into the white paste obtained in the step (5), and stirring for 20-30 minutes by taking absolute ethyl alcohol as a solvent to obtain white solid, namely the amino acid type collector.
6. The method for producing an amino acid collector according to claim 5, wherein: stirring the mixture for 12 to 18 hours at the temperature of between 40 and 60 ℃ in the step (4) to obtain suspension.
7. The method for producing an amino acid collector according to claim 5, wherein: and (5) washing the white paste by deionized water for 4-6 times.
8. Use of an amino acid collector as claimed in claim 1, characterized in that: the method is applied to enrichment recovery of nonmetallic minerals in tailings, and the dosage is 200 g-800 g added into each ton of flotation tailings.
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| AU2021105063A4 (en) * | 2021-08-06 | 2021-09-30 | Hunan Research Institute For Nonferrous Metals | Method for promoting sulphidizing flotation of copper oxide ore using amino acid |
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