CN109290051B - Spodumene ore beneficiation method - Google Patents
Spodumene ore beneficiation method Download PDFInfo
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- CN109290051B CN109290051B CN201811159249.1A CN201811159249A CN109290051B CN 109290051 B CN109290051 B CN 109290051B CN 201811159249 A CN201811159249 A CN 201811159249A CN 109290051 B CN109290051 B CN 109290051B
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- spodumene
- ore
- lignosulfonate
- oleic acid
- flotation
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- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052642 spodumene Inorganic materials 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005456 ore beneficiation Methods 0.000 title claims description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 30
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 16
- 238000005188 flotation Methods 0.000 claims abstract description 13
- 230000005484 gravity Effects 0.000 claims abstract description 12
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 7
- 238000012216 screening Methods 0.000 claims abstract description 6
- 239000002270 dispersing agent Substances 0.000 claims abstract description 3
- 239000003112 inhibitor Substances 0.000 claims abstract description 3
- 239000012141 concentrate Substances 0.000 claims description 23
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 7
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 7
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 7
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000005642 Oleic acid Substances 0.000 claims description 7
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 7
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 7
- 150000002889 oleic acids Chemical class 0.000 claims description 7
- 239000012286 potassium permanganate Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 5
- 229920005550 ammonium lignosulfonate Polymers 0.000 claims description 3
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 3
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 3
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000010408 sweeping Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 9
- 239000011707 mineral Substances 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 150000002888 oleic acid derivatives Chemical class 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 13
- 229910052744 lithium Inorganic materials 0.000 description 13
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 3
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000002000 scavenging effect Effects 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 150000001728 carbonyl compounds Chemical class 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
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 229910001760 lithium mineral Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a spodumene ore dressing method, which comprises the steps of screening and grading milled spodumene ore pulp, feeding the spodumene ore with the particle size fraction of +0.104mm into a centrifugal dressing machine for gravity separation, and separating the spodumene ore dissociated from large-particle monomers from gangue ore according to the difference of density. And adding sodium carbonate and sodium hydroxide into the spodumene ore pulp with the particle size of-0.104 mm, stirring for a long time, adding lignosulfonate serving as a dispersing agent and a gangue inhibitor, and adding modified oleic acid serving as a collecting agent to perform flotation, so that the effective separation of spodumene minerals can be realized. The invention adopts the combined flow of coarse-fine ore sorting, gravity separation and flotation, fully utilizes different ore dressing methods to have different requirements on the optimal granularity of the processed ore, reduces the ore grinding cost, and overcomes the defect that the spodumene coarse grains are difficult to float.
Description
Technical Field
The invention relates to a spodumene ore dressing method, and belongs to the technical field of mineral processing engineering.
Background
Lithium is known as new energy metal in the century and an important element for promoting the world to move forward, is an important rare metal, and can be used as a heat carrier of a nuclear reactor, a protective material of thermal neutrons, a moderator, a solvent of nuclear fuel, high-energy fuel, a high-performance lubricant, a high-power battery material and the like. The sources of lithium are mainly of two types: one is salt lake brine lithium; the other is the lithium ore, which is a typical representative of lithium ore.
The common beneficiation processes for spodumene ores are: flotation, gravity separation, magnetic separation, hand separation and the like. Because the spodumene ore deposit is generally granite pegmatite type, the spodumene ore deposit is often associated with minerals such as feldspar, quartz, mica, chlorite and the like, and the minerals belong to silicate minerals and have similar density and floatability; meanwhile, spodumene ore is easy to weather, and the ground ore is seriously argillized, so that the ore dressing difficulty of spodumene is high. The separation index obtained by adopting the conventional beneficiation method and production flow is poor, and Li in lithium concentrate2The grade of O is generally lower than 6%, meanwhile, the tailings also contain more lithium minerals, lithium resources cannot be reasonably utilized, and waste is serious.
Disclosure of Invention
The invention aims to solve the technical problem of providing a reasonable beneficiation method, which adopts different treatment processes aiming at spodumene with different particle sizes to realize effective separation of the spodumene and gangue minerals.
In order to solve the technical problem, the invention provides a spodumene ore dressing method, which comprises the following steps:
(1) grinding the spodumene raw ore in a grinding machine until the particle size of-0.074 mm accounts for 30-60%;
(2) screening the grinded spodumene ore, and grading into two products of +0.104mm and-0.104 mm;
(3) carrying out gravity separation on the spodumene ore with the particle size fraction of +0.104mm by using a centrifugal separator to obtain a coarse-particle-size spodumene concentrate product;
(4) adding sodium carbonate and sodium hydroxide into 0.104 mm-size spodumene ore pulp for stirring for a long time, wherein the using amount of the sodium carbonate is 1000-3000 g/t, the using amount of the sodium hydroxide is 400-1500 g/t, and the stirring time is 30-40 minutes;
(5) adding lignosulfonate and modified oleic acid respectively for full size mixing, wherein the dosage is 20-100 g/t and 200-600 g/t respectively;
(6) and performing primary coarse flotation, secondary fine flotation and secondary sweeping flotation to obtain a fine-grained spodumene concentrate product.
The lignosulfonate in the step (5) is one of calcium lignosulfonate, ammonium lignosulfonate, sodium lignosulfonate and ferric lignosulfonate, and is used as a slime dispersant and a gangue inhibitor.
The modified oleic acid obtained in the step (5) is obtained by adding potassium permanganate into oleic acid, wherein the mass of the added potassium permanganate accounts for 1% of the total mass of the oleic acid and the potassium permanganate, heating the mixture to 80 ℃ in a water bath, and continuously stirring the mixture for 3 hours.
Sodium carbonate and sodium hydroxide are added into the spodumene pulp for long-time stirring, so that a selective corrosion effect can be generated on the surface of a spodumene mineral, a small amount of silicon atoms on the surface of the spodumene mineral react with the sodium hydroxide to generate sodium silicate, the sodium silicate falls off from the surface of the mineral and enters a solution, more cation active particles which are beneficial to the action with a collecting agent are exposed on the surface of the mineral, and the flotability of the spodumene is improved. Oleic acid generates a small amount of peroxy compounds, carbonyl compounds and low molecular fatty acid under the action of potassium permanganate, and the existence of the peroxy compounds, the carbonyl compounds and the low molecular fatty acid improves the performance of the oleic acid, so that the oleic acid has better dispersibility in ore pulp and stronger collecting effect on spodumene.
Compared with the prior art, the invention has the following advantages: the combined process of coarse-fine ore separation, gravity separation and flotation is adopted, different ore dressing methods are fully utilized to meet different requirements on the optimal granularity of the processed ore, the ore grinding cost is reduced, and a good spodumene grading effect is achieved.
Drawings
FIG. 1 is a flow chart of a spodumene beneficiation process according to the present invention.
Detailed Description
The invention is further illustrated by the following examples.
Example 1:
li in Licorchorite ore2The O grade is 1.38 percent, and the content of-0.074 mm size fraction after ore grinding accounts for 50 percent. And screening the spodumene ore pulp, and classifying into two size fractions of products with the particle size of +0.104mm and-0.104 mm. And performing gravity separation twice on the spodumene ore with the particle size fraction of +0.104mm by using a centrifugal separator to obtain a rough-particle-size spodumene concentrate product, and returning tailings and middling products obtained by gravity separation to the mill. 2000g/t of sodium carbonate and 800g/t of sodium hydroxide are added into 0.104mm grade spodumene ore pulp, then the mixture is stirred for 40 minutes, 40g/t of calcium lignosulphonate and 200g/t of modified oleic acid are respectively added for size mixing, and fine-grained spodumene concentrate products are obtained after primary, secondary and secondary scavenging flotation operations. The coarse-fraction spodumene concentrate, the fine-fraction spodumene concentrate and the final tailings are respectively filtered, dried, weighed and assayed to obtain the grading index of spodumene ore by adopting the method, and the data are shown in the following table.
| Product name | Yield% | Li2Grade of O% | Li2O recovery rate% |
| Coarse fraction lithium concentrate | 5.84 | 5.67 | 23.99 |
| Fine fraction lithium concentrate | 13.83 | 6.12 | 61.33 |
| Tailings | 80.33 | 0.25 | 14.68 |
| Raw ore | 100 | 1.38 | 100 |
Example 2:
li in some Licorchorite ore in Australia2The O grade is 1.62 percent, and the content of-0.074 mm size fraction accounts for 60 percent after ore grinding. And screening the spodumene ore pulp, and classifying into two size fractions of products with the particle size of +0.104mm and-0.104 mm. And performing gravity separation twice on the spodumene ore with the particle size fraction of +0.104mm by using a centrifugal separator to obtain a rough-particle-size spodumene concentrate product, and returning tailings and middling products obtained by gravity separation to the mill. Adding 3000g/t of sodium carbonate and 1500g/t of sodium hydroxide into 0.104 mm-grade spodumene ore pulp, stirring for 40 minutes, respectively adding 100g/t of sodium lignosulfonate and 600g/t of modified oleic acid for size mixing, and performing primary, secondary and secondary scavenging flotation to obtain a fine-grained spodumene concentrate product. The coarse-fraction spodumene concentrate, the fine-fraction spodumene concentrate and the final tailings are respectively filtered, dried, weighed and assayed to obtain the grading index of spodumene ore by adopting the method, and the data are shown in the following table.
| Product name | Yield% | Li2Grade of O% | Li2O recovery rate% |
| Coarse fraction lithium concentrate | 4.35 | 5.41 | 14.53 |
| Fine fraction lithium concentrate | 19.28 | 6.17 | 73.43 |
| Tailings | 76.37 | 0.26 | 12.04 |
| Raw ore | 100 | 1.62 | 100 |
Example 3:
li in Licorm ore of Xinjiang2The O grade is 1.45 percent, and the content of-0.074 mm size fraction after ore grinding accounts for 30 percent. And screening the spodumene ore pulp, and classifying into two size fractions of products with the particle size of +0.104mm and-0.104 mm. By centrifugationThe concentrating machine carries out two times of gravity separation on the spodumene ore with the particle size fraction of +0.104mm to obtain a rough particle size fraction spodumene concentrate product, and tailings and middling products obtained by gravity separation are returned to the grinding machine. Adding 1000g/t of sodium carbonate and 400g/t of sodium hydroxide into 0.104 mm-size spodumene ore pulp, stirring for 40 minutes, respectively adding 20g/t of ammonium lignosulphonate and 400g/t of modified oleic acid for size mixing, and performing primary coarse, secondary fine and secondary scavenging flotation to obtain a fine-grained spodumene concentrate product. The coarse-fraction spodumene concentrate, the fine-fraction spodumene concentrate and the final tailings are respectively filtered, dried, weighed and assayed to obtain the grading index of spodumene ore by adopting the method, and the data are shown in the following table.
| Product name | Yield% | Li2Grade of O% | Li2O recovery rate% |
| Coarse fraction lithium concentrate | 6.78 | 6.02 | 28.15 |
| Fine fraction lithium concentrate | 13.63 | 6.31 | 59.31 |
| Tailings | 79.59 | 0.23 | 12.54 |
| Raw ore | 100 | 1.45 | 100 |
Claims (3)
1. A spodumene ore beneficiation method, characterized by comprising the steps of:
(1) grinding the spodumene raw ore in a grinding machine until the particle size of-0.074 mm accounts for 30-60%;
(2) screening the grinded spodumene ore, and grading into two products of +0.104mm and-0.104 mm;
(3) carrying out gravity separation on the spodumene ore with the particle size fraction of +0.104mm by using a centrifugal separator to obtain a coarse-particle-size spodumene concentrate product;
(4) adding sodium carbonate and sodium hydroxide into 0.104 mm-size spodumene ore pulp for stirring for a long time, wherein the using amount of the sodium carbonate is 1000-3000 g/t, the using amount of the sodium hydroxide is 400-1500 g/t, and the stirring time is 30-40 minutes;
(5) adding lignosulfonate and modified oleic acid respectively for full size mixing, wherein the dosage is 20-100 g/t and 200-600 g/t respectively;
(6) and performing primary coarse flotation, secondary fine flotation and secondary sweeping flotation to obtain a fine-grained spodumene concentrate product.
2. The method of claim 1, further comprising: the lignosulfonate in the step (5) is one of calcium lignosulfonate, ammonium lignosulfonate, sodium lignosulfonate and ferric lignosulfonate, and is used as a slime dispersant and a gangue inhibitor.
3. The method of claim 1, further comprising: the modified oleic acid obtained in the step (5) is obtained by adding potassium permanganate into oleic acid, wherein the mass of the added potassium permanganate accounts for 1% of the total mass of the oleic acid and the potassium permanganate, heating the mixture to 80 ℃ in a water bath, and continuously stirring the mixture for 3 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811159249.1A CN109290051B (en) | 2018-09-30 | 2018-09-30 | Spodumene ore beneficiation method |
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| CN201811159249.1A CN109290051B (en) | 2018-09-30 | 2018-09-30 | Spodumene ore beneficiation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110369153A (en) * | 2019-07-19 | 2019-10-25 | 中南大学 | Spodumene method for floating |
| CN112024110B (en) * | 2019-09-19 | 2022-05-27 | 中蓝连海设计研究院有限公司 | Mineral separation method for pegmatite type spodumene |
| CN115025874B (en) * | 2022-06-30 | 2023-07-25 | 矿冶科技集团有限公司 | Mineral separation method of diaspore ore |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2748938A (en) * | 1952-06-23 | 1956-06-05 | Armour & Co | Flotation of spodumene |
| US6422393B1 (en) * | 2000-04-14 | 2002-07-23 | Jeffrey Van Jahnke | Recovery from fine froth flotation feed (slimes) |
| CN102974451A (en) * | 2012-10-12 | 2013-03-20 | 金川集团股份有限公司 | Method for improving recovery rate of copper nickel associated precious metals |
| CN104128251B (en) * | 2014-07-24 | 2016-07-20 | 江西理工大学 | A kind of beneficiation method of tungsten slurry |
| CN104148166B (en) * | 2014-08-06 | 2016-06-22 | 昆明理工大学 | A kind of beneficiation method of complicated tellurium Ore |
| CN105126993B (en) * | 2015-08-21 | 2018-05-15 | 西北矿冶研究院 | Comprehensive recovery process for associated tantalum-niobium ore |
| CN107159446B (en) * | 2017-06-19 | 2019-03-15 | 西南科技大学 | A kind of method of pegmatite type spodumene efficient flotation separation |
| CN108057513A (en) * | 2017-12-20 | 2018-05-22 | 江西九岭新能源有限公司 | The method that the barren rock of giant granite containing lithium extracts potassium feldspar concentrate and zinnwaldite concentrate |
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