CN114522806A - Composite flotation collector and application thereof, and scheelite flotation method - Google Patents
Composite flotation collector and application thereof, and scheelite flotation method Download PDFInfo
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- CN114522806A CN114522806A CN202210172728.7A CN202210172728A CN114522806A CN 114522806 A CN114522806 A CN 114522806A CN 202210172728 A CN202210172728 A CN 202210172728A CN 114522806 A CN114522806 A CN 114522806A
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- flotation
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- scheelite
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- oleic acid
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- 238000005188 flotation Methods 0.000 title claims abstract description 116
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000005642 Oleic acid Substances 0.000 claims abstract description 34
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims abstract description 34
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 34
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims abstract description 31
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims abstract description 31
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims abstract description 31
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 31
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 31
- 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 claims abstract description 20
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 20
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 14
- 239000012141 concentrate Substances 0.000 claims description 11
- 230000002000 scavenging effect Effects 0.000 claims description 8
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 claims description 5
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 claims description 3
- 235000020778 linoleic acid Nutrition 0.000 claims description 3
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 claims description 3
- 239000002516 radical scavenger Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 14
- 239000011707 mineral Substances 0.000 abstract description 14
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000004062 sedimentation Methods 0.000 abstract description 5
- 229910021578 Iron(III) chloride Inorganic materials 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 4
- 239000003112 inhibitor Substances 0.000 abstract description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 239000004255 Butylated hydroxyanisole Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 229910021532 Calcite Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- VDEUYMSGMPQMIK-UHFFFAOYSA-N benzhydroxamic acid Chemical compound ONC(=O)C1=CC=CC=C1 VDEUYMSGMPQMIK-UHFFFAOYSA-N 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 239000013043 chemical agent 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
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008241 heterogeneous mixture Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B03D1/018—Mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- 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
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides a composite flotation collector, application thereof and a scheelite flotation method, and particularly relates to the technical field of mineral separation. The composite flotation collector comprises a chelating collector, oleic acid substances, sodium hexametaphosphate and sodium silicate, wherein the weight ratio of the chelating collector to the oleic acid substances to the sodium hexametaphosphate to the sodium silicate is 50: 5-7.5: 2-5: 150-200. The composite flotation collector improves the collecting capacity of the medicament, enhances the selectivity to target minerals, meets the requirement of the flotation index of the target minerals, and reduces the using amount of sodium silicate in flotation, thereby reducing the influence on flotation tailing sedimentation when a large amount of sodium silicate is used as an inhibitor. And FeCl3Oleic acid, oleic acid and hexametaphosphoric acidThe sodium has low cost and is green and environment-friendly.
Description
Technical Field
The invention relates to the technical field of mineral separation, in particular to a composite flotation collector and application thereof, and a scheelite flotation method.
Background
The skarn type scheelite associated with calcium-containing minerals such as calcite and fluorite contains Ca in the mineral lattice similar to that of gangue mineral2+And difficult to separate by flotation. Common methods for the flotation of scheelite include the warm process (petrolov process) and the normal temperature process.
The traditional heating method has better index for floating scheelite, but the operation process needs heating and addition of a large amount of sodium silicate, and additional ore pulp concentration equipment is needed, so the process is complex and the energy consumption is higher. The normal temperature method is simple and convenient to operate, does not need to concentrate ore pulp, but has poor flotation indexes for scheelite with lower tungsten grade and higher content of calcite and fluorite.
The more used scheelite flotation collectors are fatty acid (and soap thereof) collectors and hydroximic acid collectors. The fatty acid collecting agent has strong collecting force but poor selectivity, and a large amount of sodium silicate needs to be added to improve the selectivity of the agent during use, but the sodium silicate brings great difficulty to the sedimentation of tailings. The hydroximic acid collecting agent has good selectivity and weak collecting force, and Pb (NO) needs to be added when in use3)2Activating mineral surface and simultaneously, Pb (NO)3)2The use of (2) brings a certain burden to environmental protection.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a composite flotation collector, aiming at solving the technical problem that the existing collector cannot give consideration to both selectivity and collecting capacity.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a composite flotation collector, which comprises a chelating collector, oleic acid substances, sodium hexametaphosphate and sodium silicate.
Optionally, the chelating collector, the oleic acid substance, the sodium hexametaphosphate and the sodium silicate are in a weight ratio of 50: 5-7.5: 2-5: 150-200.
Optionally, the chelating collector is Fe-BHA.
Optionally, the oleic acid species comprises oleic acid, sodium oleate, linoleic acid and saponified species of oleic acid.
The invention also provides the application of the composite flotation collector in scheelite flotation.
The third aspect of the invention provides a scheelite flotation method, which uses the composite flotation collector for flotation to obtain scheelite concentrate.
Optionally, the flotation comprises rougher flotation, scavenger flotation and cleaner flotation.
Optionally, in the roughing process, the addition amount of the composite flotation collector is 500-1000 g/t.
Optionally, in the scavenging process, the addition amount of the composite flotation collector is 50-300 g/t.
Optionally, in the concentration process, the addition amount of the composite flotation collector is 20-150 g/t.
Optionally, the flotation comprises at least one sweep and at least one concentration.
Compared with the prior art, the invention has at least the following beneficial effects:
according to the composite flotation collecting agent provided by the invention, the chelating collecting agent has good selectivity and weak collecting capability, and after the oleic acid substance is added, the integral collecting force of the composite flotation collecting agent is improved while the selectivity is ensured. Sodium hexametaphosphate and sodium silicate as inhibitors: the sodium hexametaphosphate is not easy to cause the difficult sedimentation of the tailing water, but has the defects of sensitive dosage and difficult control of proper dosage, and the sodium silicate is added to contribute to forming a stable inhibition effect, and the sodium hexametaphosphate and the sodium silicate are used simultaneously to reduce the dosage of the sodium silicate. The chelating collector, the oleic acid substances, the sodium hexametaphosphate and the sodium silicate in the composite flotation collector are cooperatively matched, so that the collecting capacity of the medicament is improved, the selectivity of the target mineral is enhanced, the requirement of the target mineral on flotation indexes is met, and the flotation process is reducedThe amount of sodium silicate is used, so that the influence of a large amount of sodium silicate as an inhibitor on the sedimentation of flotation tailings is reduced. And FeCl3Oleic acid substances and sodium hexametaphosphate are low in cost and environment-friendly.
The composite flotation collector provided by the invention is applied to scheelite flotation, provides a collector with better selectivity and stronger collecting capability for scheelite flotation, and is suitable for large-scale popularization and application.
The scheelite flotation method provided by the invention reduces the reagent cost of scheelite flotation, reduces the burden of sodium silicate on the environment, and improves the selectivity and flotation effect of scheelite flotation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flow chart of scheelite beneficiation provided in example 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The invention provides a composite flotation collector, which comprises a chelating collector, oleic acid substances, sodium hexametaphosphate and sodium silicate.
The composite flotation collector provided by the invention uses the synergistic cooperation of the chelating collector, oleic acid substances, sodium hexametaphosphate and sodium silicate, so that the collecting capacity of the medicament is improvedThe method enhances the selectivity of the target mineral, meets the requirement of the flotation index of the target mineral, and reduces the dosage of sodium silicate in flotation, thereby reducing the influence of a large amount of sodium silicate on the sedimentation of flotation tailings when the sodium silicate is used as an inhibitor. And FeCl3Oleic acid substances and sodium hexametaphosphate are low in cost and environment-friendly.
Optionally, the chelating collector, the oleic acid substance, the sodium hexametaphosphate and the sodium silicate are in a weight ratio of 50: 5-7.5: 2-5: 150-200.
In some embodiments of the invention, the weight ratio of the chelating collector, the oleic acid species, the sodium hexametaphosphate and the sodium silicate is typically, but not limited to, 50:5:2:150, 50:7.5:5:200, 50:5:2:160, 50:5:2:170, 50:5:2:180, 50:5:2:190 or 50:6:4: 180.
Optionally, the chelating collector is Fe-BHA.
The Fe-BHA is FeCl3And benzohydroxamic acid in an aqueous solution according to a molar ratio of 1.0-2.0: 1, to form a heterogeneous mixture of Fe-BHA.
Wherein the Fe-BHA comprises at least one of the following formula (1), formula (2) and formula (3).
The Fe-BHA is adsorbed on the surface of the mineral in a molecule-ion co-adsorption mode to generate chelation, so that stable Fe-hydroximic acid salt is formed, the adsorption and aggregation of scheelite are facilitated, and the collecting effect is achieved.
Optionally, the oleic acid species comprises oleic acid, sodium oleate, linoleic acid and saponified species of oleic acid.
In some embodiments of the invention, the oleic acid species are typically, but not limited to, oleic acid, sodium oleate, linoleic acid, and saponificates of oleic acid.
The invention also provides the application of the composite flotation collector in scheelite flotation.
The composite flotation collector provided by the invention is applied to scheelite flotation, provides a collector with better selectivity and stronger collecting capability for scheelite flotation, and is suitable for large-scale popularization and application.
The third aspect of the invention provides a scheelite flotation method, which uses the composite flotation collector for flotation to obtain scheelite concentrate.
The scheelite flotation method provided by the invention reduces the reagent cost of scheelite flotation, reduces the burden of sodium silicate on the environment, and improves the selectivity and flotation effect of scheelite flotation.
In some embodiments of the invention, the raw ore has high content of Fe element and S element, and the method further comprises magnetic separation iron removal or desulfurization flotation before scheelite roughing.
In some embodiments of the invention, the method further comprises a size mixing process before the scheelite roughing.
In some embodiments of the invention, the pH of the slurry after size mixing is 8-10.
In some embodiments of the invention, the sizing is performed using an alkaline material, typically but not limited to lime + sodium carbonate combination, sodium carbonate or sodium hydroxide.
Optionally, the flotation comprises rougher flotation, scavenger flotation and cleaner flotation.
Optionally, the roughing is once.
Optionally, in the roughing process, the addition amount of the composite flotation collector is 500-1000 g/t.
In some embodiments of the invention, the addition amount of the complexed flotation collector during roughing is typically, but not limited to, 500g/t, 600g/t, 700g/t, 800g/t, 900g/t or 1000 g/t.
Optionally, in the scavenging process, the addition amount of the composite flotation collector is 50-300 g/t.
In some embodiments of the invention, the addition amount of complexed collector at sweep is typically, but not limited to, 50g/t, 100g/t, 150g/t, 200g/t, 250g/t, or 300 g/t.
Optionally, in the concentration process, the addition amount of the composite flotation collector is 20-150 g/t.
In some embodiments of the invention, the addition amount of complexed collector during beneficiation is typically, but not limited to, 20g/t, 40g/t, 60g/t, 80g/t, 100g/t, 130g/t, or 150 g/t.
Optionally, the flotation comprises at least one sweep and at least one concentration.
In some embodiments of the invention, the scavenging of the flotation process is typically, but not limited to, one-stage scavenging, two-stage scavenging, three-stage scavenging or four-stage scavenging.
In some embodiments of the invention, beneficiation of the flotation process is typically, but not limited to, one-stage beneficiation, two-stage beneficiation, three-stage beneficiation, or four-stage beneficiation.
In some embodiments of the invention, a section of the concentration tailings is returned to the rougher separation step for continued separation.
In some embodiments of the invention, the second stage concentration tailings are returned to first stage concentration for continued separation.
In some embodiments of the invention, the three-stage concentration tailings are returned to the two-stage concentration for continued separation.
In some embodiments of the invention, the four-stage concentration tailings are returned to three-stage concentration for continued separation.
In some embodiments of the invention, a portion of the scavenged concentrate is returned to the rougher flotation step for further flotation.
In some embodiments of the invention, the second sweep concentrate is returned to the first sweep to continue the separation.
The above-mentioned step of returning to recleaning can improve the yield of concentrate.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict. The raw materials used in the present invention may be commercially available, unless otherwise specified.
Example 1
The embodiment provides a composite flotation collector, which comprises the following steps:
(1) preparation of Fe-BHA: FeCl is added3And benzohydroxamic acid in an aqueous solution according to a molar ratio of 1.5: 1, and mixing the components according to the proportion of 1.
(2) Uniformly mixing Fe-BHA, oleic acid, sodium hexametaphosphate and sodium silicate according to the weight ratio of 50:6:4:180 to obtain the composite flotation collector.
Example 2
This example provides a composite flotation collector, which is different from example 1 in that in step (2), the weight ratio of Fe-BHA, oleic acid, sodium hexametaphosphate and sodium silicate is 50:7.5:5:200, and the rest of the raw materials and steps are the same as in example 1, and are not repeated herein.
Example 3
This example provides a composite flotation collector, which is different from example 1 in that in step (2), the weight ratio of Fe-BHA, oleic acid, sodium hexametaphosphate and sodium silicate is 50:5:2:150, and the rest of the raw materials and steps are the same as example 1 and are not repeated herein.
Example 4
The present embodiment provides a composite flotation collector, which is different from embodiment 1 in that in step (2), oleic acid is replaced by sodium oleate, and the rest of the raw materials and steps are the same as those in embodiment 1, and are not described herein again.
Example 5
This example provides a method for dressing scheelite, the scheelite raw ore used in the method3The content is 0.75%, and the S content is 1.24%.
The beneficiation flow is shown in figure 1, and the specific steps are as follows:
(1) grinding raw ore to 75% of-0.074 mm, adding 90g/t of butyl xanthate and 35g/t of butylamine black powder, and performing desulfurization flotation to obtain desulfurization tailings.
(2) Adding 800g/t of sodium carbonate into the desulfurization tailings, adjusting the pH value of ore pulp to 8.2, adding 800g/t of the composite flotation collector prepared in the embodiment 1, and performing white tungsten roughing.
(3) Coarse white tungstenAdding 120g/t of composite flotation collecting agent into the concentrate to carry out first-stage concentration on the scheelite; adding 650g/t of water glass into the first-stage white tungsten selection foam product to perform second-stage white tungsten selection; adding 350g/t of water glass into the scheelite second-stage fine selection foam product to carry out scheelite third-stage fine selection; adding 50g/t of water glass into the scheelite three-stage concentration foam product to carry out scheelite four-stage concentration to obtain the final WO3Grade 58.06%, WO3The recovery rate of the scheelite concentrate is 78.63 percent.
Example 6
The embodiment provides a scheelite beneficiation method, which is different from embodiment 5 in that the used composite flotation collectors are respectively the composite flotation collectors provided in embodiment 2, and the rest steps and the usage amount of the reagents are the same as those in embodiment 5, and are not repeated herein.
Example 7
The present embodiment provides a scheelite beneficiation method, which is different from embodiment 5 in that the used composite flotation collectors are the composite flotation collectors provided in embodiment 3, and the remaining steps and the usage amount of the chemical agent are the same as those in embodiment 5, and are not described herein again.
Example 8
The present embodiment provides a scheelite beneficiation method, which is different from embodiment 5 in that the used composite flotation collectors are the composite flotation collectors provided in embodiment 4, and the remaining steps and the usage amount of the chemical agent are the same as those in embodiment 5, and are not described herein again.
Example 9
This example provides a scheelite beneficiation method, which is different from example 5 in that the number of beneficiation is 3, and the remaining steps and the amount of chemicals used are the same as those in example 5, and are not repeated herein.
Comparative example 1
The comparison example provides a scheelite beneficiation method, which is different from example 5 in that the collecting agent is Fe-BHA, the collecting agent is used for replacing the composite flotation collecting agent in example 5, and the rest steps and the using amount of the reagents are the same as those in example 5, and are not repeated herein.
Comparative example 2
The comparative example provides a scheelite beneficiation method, which is different from example 5 in that the collecting agent is prepared by uniformly mixing oleic acid, sodium hexametaphosphate and sodium silicate according to a weight ratio of 6:4:180, the collecting agent is used for replacing the composite flotation collecting agent in example 5, and other steps and the using amount of the reagents are the same as those in example 5, and are not repeated herein.
The results of the grades of the scheelite concentrates of examples 5 to 9 and comparative examples 1 to 2 are shown in table 1.
TABLE 1 grade results for scheelite concentrate
| WO3Grade% | WO3The recovery rate is high | |
| Example 5 | 58.06 | 78.63 |
| Example 6 | 58.41 | 65.24 |
| Example 7 | 56.43 | 70.37 |
| Example 8 | 57.35 | 69.04 |
| Example 9 | 56.42 | 80.13 |
| Comparative example 1 | 53.04 | 34.28 |
| Comparative example 2 | 45.87 | 64.20 |
As can be seen from Table 1, the flotation indexes of scheelite in examples 1-9 floated with the composite collector of the present invention were significantly better than those of scheelite in comparative examples 1 and 2 when Fe-BHA or oleic acid was used alone. Wherein, different medicament compounding proportions and process schemes also have certain influence on the flotation effect of the scheelite, and the flotation effect needs to be correspondingly adjusted according to the actual situation of minerals in use.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The composite flotation collector is characterized by comprising a chelating collector, oleic acid substances, sodium hexametaphosphate and sodium silicate.
2. A composite flotation collector according to claim 1, wherein the weight ratio of the chelating collector to the oleic acid substance to the sodium hexametaphosphate to the sodium silicate is 50: 5-7.5: 2-5: 150-200.
3. A composite flotation collector according to claim 1, wherein the oleic acid species comprises oleic acid, sodium oleate, linoleic acid and saponified species of oleic acid;
the chelating collector is Fe-BHA.
4. The use of a composite flotation collector of any one of claims 1 to 3 in scheelite flotation.
5. A scheelite flotation method, characterized in that the scheelite flotation method is carried out by using the composite flotation collector in any one of claims 1-3 to obtain scheelite concentrate.
6. The method of scheelite flotation according to claim 5, wherein the flotation comprises rougher flotation, scavenger flotation and cleaner flotation.
7. The scheelite flotation method according to claim 6, wherein the composite type flotation collector is added in an amount of 500-1000g/t in the roughing process.
8. The scheelite flotation method according to claim 6, wherein the addition amount of the composite flotation collector in the scavenging process is 50-300 g/t.
9. The scheelite flotation method according to claim 6, wherein the composite flotation collector is added in an amount of 20-150g/t during the concentration process.
10. The method of scheelite flotation according to claim 5, wherein the flotation comprises at least one sweep and at least one concentration.
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