CN113058748A - Method for improving grade of low-grade spodumene rough concentrate - Google Patents
Method for improving grade of low-grade spodumene rough concentrate Download PDFInfo
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- CN113058748A CN113058748A CN202110293835.0A CN202110293835A CN113058748A CN 113058748 A CN113058748 A CN 113058748A CN 202110293835 A CN202110293835 A CN 202110293835A CN 113058748 A CN113058748 A CN 113058748A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
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- 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
- B03D1/008—Organic compounds containing oxygen
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- 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
- B03D1/012—Organic compounds containing sulfur
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
Abstract
The invention provides a method for improving the grade of low-grade spodumene rough concentration concentrate, belonging to the technical field of ore dressing. According to the invention, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfate are used as the foam stabilizer, the foam stabilizer belongs to a surfactant, and because the foam stabilizer has foamability, the surface tension and viscosity of bubbles generated by a collecting agent can be reduced after the foam stabilizer is mixed with the collecting agent, so that the bubbles are easy to break, the problems of more foams, sticky foams and difficult breakage of the bubbles generated in the flotation process are solved, and the grade of spodumene rough concentrate is improved. The results of the examples show that the grade of the spodumene rough concentrate prepared by the method provided by the invention is improved by 0.81%, the recovery rate is improved by 5.01%, the rough concentrate has fine foam, is free from sticky state and is quick to defoam.
Description
Technical Field
The invention relates to the technical field of ore dressing, in particular to a method for improving the grade of rough concentrate of low-grade spodumene.
Background
Spodumene, as a raw material of lithium chemical products, is widely applied to the industries of lithium chemical industry, glass and ceramics, and enjoys the reputation of industrial monosodium glutamate. In the existing spodumene flotation technology, fatty acids such as sodium oleate, oxidized paraffin soap, naphthenic acid soap and naphthenic acid are generally adopted as collecting agents in the spodumene flotation stage, but because the fatty acid agents have the bad phenomena of excessive bubbles and sticky and unbreakable bubbles in the flotation process, the concentrate grade of spodumene rough concentrate is easily reduced during the capturing process, and further the recovery rate of the rough concentrate is reduced. In the prior art, the grade of rough concentrate of spodumene is improved by adopting a method of rough concentration for multiple times, so that the rough concentration process is complex and the cost is high. And the content of bubbles in the ore pulp is reduced by adding the defoaming agent, the control is not easy, the content of bubbles is easily reduced greatly, and the adverse effect is brought to the improvement of the roughing concentrate grade. Therefore, there is a need to provide a method that can improve the quality of the spodumene rougher concentrate.
Disclosure of Invention
The invention aims to provide a method for improving the grade of low-grade spodumene rough concentrate, and the method provided by the invention can improve the grade of the spodumene rough concentrate.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a method for improving the grade of low-grade spodumene rough concentrate, which comprises the following steps:
(1) carrying out fine grinding on spodumene raw ore to obtain ore pulp;
(2) sequentially adding a regulator, an activating agent, a foam stabilizer and a collecting agent into the ore pulp obtained in the step (1), and performing roughing to obtain roughed concentrate and tailings;
the foam stabilizer is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfate; taking the quality of the spodumene raw ore in the step (1) as a reference, wherein the consumption of the foam stabilizer is 30-80 g/t;
the collecting agent is at least one of oleic acid, sodium oleate, oxidized paraffin soap and naphthenic acid.
Preferably, the particle size of the spodumene raw ore in step (1) is less than 1.5 mm.
Preferably, the ore pulp obtained in the step (1) contains spodumene with the granularity of less than 0.074mm in an amount of 80-90% by mass.
Preferably, the modifier in step (2) is at least one of sodium sulfide, sodium carbonate and sodium hydroxide.
Preferably, the conditioning agents are sodium sulfide, sodium carbonate and sodium hydroxide; based on the quality of the spodumene raw ore in the step (1), the using amount of the sodium sulfide is 200-500 g/t, the using amount of the sodium carbonate is 500-1500 g/t, and the using amount of the sodium hydroxide is 500-1500 g/t.
Preferably, the activating agent in the step (2) is ferric chloride, calcium chloride, water glass, acidified water glass, copper sulfate or ferrous sulfate.
Preferably, the amount of the activating agent in the step (2) is less than or equal to 500g/t based on the mass of the spodumene raw ore in the step (1).
Preferably, the collector in step (2) is a mixture of sodium oleate and an oxidized paraffin soap.
Preferably, the mass of the spodumene raw ore in the step (1) is taken as a reference, the dosage of the sodium oleate is 200-400 g/t, and the dosage of the oxidized paraffin soap is 200-400 g/t.
Preferably, the roughing time in the step (2) is 2-10 min.
The invention provides a method for improving the grade of low-grade spodumene rough concentrate, which comprises the following steps: carrying out fine grinding on spodumene raw ore to obtain ore pulp; adding a regulator, an activating agent, a foam stabilizer and a collecting agent into the ore pulp in sequence, and performing roughing to obtain roughed concentrate and tailings; the foam stabilizer is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfate, and the dosage of the foam stabilizer is 30-80 g/t of raw ore; the collecting agent is at least one of oleic acid, sodium oleate, oxidized paraffin soap and naphthenic acid. According to the invention, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfate are used as the foam stabilizer, the foam stabilizer belongs to a surfactant, and because the foam stabilizer has foamability, the surface tension and viscosity of bubbles generated by a collecting agent can be reduced after the foam stabilizer is mixed with the collecting agent, so that the bubbles are easy to break, the problems of more foams, sticky foams and difficult breakage of the bubbles generated in the flotation process are solved, and the grade of spodumene rough concentrate is improved. The results of the examples show that the grade of the spodumene rough concentrate prepared by the method provided by the invention is improved by 0.81%, the recovery rate is improved by 5.01%, the foam of the rough concentrate is fine and has no sticky state, and the defoaming is quick.
Detailed Description
The invention provides a method for improving the grade of low-grade spodumene rough concentrate, which comprises the following steps:
(1) carrying out fine grinding on spodumene raw ore to obtain ore pulp;
(2) sequentially adding a regulator, an activating agent, a foam stabilizer and a collecting agent into the ore pulp obtained in the step (1), and performing roughing to obtain roughed concentrate and tailings;
the foam stabilizer is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfate; taking the quality of the spodumene raw ore in the step (1) as a reference, wherein the consumption of the foam stabilizer is 30-80 g/t;
the collecting agent is at least one of oleic acid, sodium oleate, oxidized paraffin soap and naphthenic acid.
In the invention, the spodumene raw ore is finely ground to obtain ore pulp.
In the present invention, the particle size of the spodumene raw ore is preferably less than 1.5mm, more preferably less than 1.2 mm. The invention adopts the spodumene raw ore with small particle size as the raw material, and is convenient for finely grinding the spodumene raw ore to obtain ore pulp meeting the requirements.
In the invention, the mass content of spodumene with the particle size of less than 0.074mm in the ore pulp is preferably 80-90%, and more preferably 86%. The particle size of spodumene in the ore pulp is controlled within the range, so that the spodumene is convenient to roughly select.
In the present invention, the fine grinding is preferably carried out in a rod mill, and the present invention is not particularly limited to a specific type of the rod mill, and may employ commercially available products well known to those skilled in the art.
After obtaining the ore pulp, the invention adds a regulator, an activating agent, a foam stabilizer and a collecting agent into the ore pulp in sequence, and performs roughing to obtain roughed concentrate and tailings. In the present invention, the conditioning agent, activating agent, foam stabilizing agent and collecting agent are preferably added under stirring conditions. The stirring rate is not particularly limited in the present invention, and may be determined according to the general technical knowledge of those skilled in the art.
In the present invention, the conditioning agent is preferably at least one of sodium sulfide, sodium carbonate, and sodium hydroxide, and more preferably sodium sulfide, sodium carbonate, and sodium hydroxide. In the invention, the amount of the sodium sulfide is preferably 200-500 g/t, more preferably 300g/t, based on the mass of the spodumene raw ore; the dosage of the sodium carbonate is preferably 500-1500 g/t, and more preferably 1000 g/t; the dosage of the sodium hydroxide is preferably 500-1500 g/t, and more preferably 1000 g/t. In the invention, the regulator can regulate the action of the collecting agent and the minerals, promote the floatability of the minerals and regulate the pH value of the ore pulp and the composition of ions.
In the present invention, when the conditioning agent is sodium sulfide, sodium carbonate and sodium hydroxide, the present invention preferably adds the sodium sulfide, sodium carbonate and sodium hydroxide to the pulp in sequence. According to the invention, the sodium sulfide is preferably added into the ore pulp and then stirred for 2-5 min, and more preferably for 3 min; according to the invention, the sodium carbonate is preferably added into the ore pulp and then stirred for 2-5 min, and more preferably for 3 min; according to the invention, the sodium hydroxide is preferably added into the ore pulp and then stirred for 20-40 min, and more preferably for 30 min. The invention can mix the regulator and the ore pulp uniformly by the stirring mode.
In the present invention, the activating agent is preferably ferric chloride, calcium chloride, water glass, acidified water glass, copper sulfate or ferrous sulfate, and more preferably calcium chloride. In the present invention, the amount of the activator is preferably not more than 500g/t, more preferably 300g/t, based on the mass of the spodumene raw ore. In the invention, the activating agent can increase the floatability of the mineral, change the surface composition of the mineral and promote the collecting agent to react with the surface of the mineral.
In the present invention, the foam stabilizer is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfonate, preferably sodium dodecyl benzene sulfonate. In the invention, the foam stabilizer is used in an amount of 30-80 g/t, preferably 50g/t, based on the mass of the spodumene raw ore. According to the invention, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfate are used as foam stabilizers, the foam stabilizers belong to surfactants, and since the foam stabilizers have foamability, bubbles can reduce the surface tension and viscosity of the bubbles generated by the collecting agent after being mixed with the collecting agent, so that the bubbles are easy to break, the problems of more foams, sticky foams and difficult breakage of the foams generated in the flotation process are solved, and the grade of spodumene rough concentrate is improved.
In the present invention, the collector is at least one of oleic acid, sodium oleate, oxidized paraffin soap and naphthenic acid, and is preferably a mixture of sodium oleate and oxidized paraffin soap. In the invention, the mass of the spodumene raw ore is taken as a reference, and the dosage of the sodium oleate is preferably 200-400 g/t, more preferably 300 g/t; the dosage of the oxidized paraffin soap is preferably 200-400 g/t, and more preferably 300 g/t. In the invention, the collector can change the hydrophobicity of the surface of the mineral, so that the mineral to be floated is adhered to the surface of the bubble and floats, thereby achieving the aim of mineral separation.
In the invention, the activating agent, the foam stabilizer and the collecting agent are preferably stirred after being added into the ore pulp, and the stirring time is preferably 2-5 min, and more preferably 3min independently. The invention can mix all components with the ore pulp evenly by stirring.
The specific sources of the conditioning agent, the activating agent, the foam stabilizer and the collecting agent are not particularly limited in the present invention, and commercially available products well known to those skilled in the art can be selected.
In the invention, the roughing time is preferably 2-10 min, and more preferably 3 min. The invention can separate the rougher concentrate from the tailings by rougher flotation.
The method is simple, the rough concentrate foam generated in the rough concentration process is fine and free of sticky state, the defoaming is fast, and the grade of the spodumene rough concentrate can be improved.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A method for improving the grade of rough concentrate of low-grade spodumene comprises the following steps:
(1) putting spodumene raw ore with the particle size of less than 1.5mm into a rod mill for fine grinding to obtain ore pulp; the mass content of spodumene with the granularity of less than 0.074mm in the ore pulp is 86 percent;
(2) adding sodium sulfide into the ore pulp obtained in the step (1), stirring for 3min, adding sodium carbonate, stirring for 3min, adding sodium hydroxide, stirring for 30min, adding calcium chloride, stirring for 3min, adding sodium dodecyl benzene sulfonate, stirring for 3min, adding a mixture of sodium oleate and oxidized paraffin soap, stirring for 3min, and performing roughing for 3min to obtain roughing concentrate and tailings;
taking the mass of the spodumene raw ore in the step (1) as a reference, wherein the using amount of the sodium sulfide is 300 g/t; the dosage of the sodium carbonate is 1000 g/t; the dosage of the sodium hydroxide is 1000 g/t; the dosage of the calcium chloride is 300 g/t; the dosage of the sodium dodecyl benzene sulfonate is 50 g/t; the dosage of the sodium oleate is 300 g/t; the dosage of the oxidized paraffin soap is 300 g/t.
Example 2
A method for improving the grade of rough concentrate of low-grade spodumene comprises the following steps:
(1) putting spodumene raw ore with the particle size of less than 1.5mm into a rod mill for fine grinding to obtain ore pulp; the mass content of spodumene with the granularity of less than 0.074mm in the ore pulp is 86 percent;
(2) adding sodium sulfide into the ore pulp obtained in the step (1), stirring for 3min, adding sodium carbonate, stirring for 3min, adding sodium hydroxide, stirring for 30min, adding calcium chloride, stirring for 3min, adding sodium dodecyl sulfate, stirring for 3min, adding a mixture of sodium oleate and oxidized paraffin soap, stirring for 3min, and performing roughing for 3min to obtain roughing concentrate and tailings;
taking the mass of the spodumene raw ore in the step (1) as a reference, wherein the using amount of the sodium sulfide is 300 g/t; the dosage of the sodium carbonate is 1000 g/t; the dosage of the sodium hydroxide is 1000 g/t; the dosage of the calcium chloride is 300 g/t; the dosage of the sodium dodecyl sulfate is 50 g/t; the dosage of the sodium oleate is 300 g/t; the dosage of the oxidized paraffin soap is 300 g/t.
Example 3
A method for improving the grade of rough concentrate of low-grade spodumene comprises the following steps:
(1) putting spodumene raw ore with the particle size of less than 1.5mm into a rod mill for fine grinding to obtain ore pulp; the mass content of spodumene with the granularity of less than 0.074mm in the ore pulp is 86 percent;
(2) adding sodium sulfide into the ore pulp obtained in the step (1), stirring for 3min, adding sodium carbonate, stirring for 3min, adding sodium hydroxide, stirring for 30min, adding calcium chloride, stirring for 3min, adding sodium dodecyl sulfate, stirring for 3min, adding a mixture of sodium oleate and oxidized paraffin soap, stirring for 3min, and performing roughing for 3min to obtain roughing concentrate and tailings;
taking the mass of the spodumene raw ore in the step (1) as a reference, wherein the using amount of the sodium sulfide is 300 g/t; the dosage of the sodium carbonate is 1000 g/t; the dosage of the sodium hydroxide is 1000 g/t; the dosage of the calcium chloride is 300 g/t; the dosage of the sodium dodecyl sulfate is 50 g/t; the dosage of the sodium oleate is 300 g/t; the dosage of the oxidized paraffin soap is 300 g/t.
Example 4
A method for improving the grade of rough concentrate of low-grade spodumene comprises the following steps:
(1) putting spodumene raw ore with the particle size of less than 1.5mm into a rod mill for fine grinding to obtain ore pulp; the mass content of spodumene with the granularity of less than 0.074mm in the ore pulp is 86 percent;
(2) adding sodium sulfide into the ore pulp obtained in the step (1), stirring for 3min, adding sodium carbonate, stirring for 3min, adding sodium hydroxide, stirring for 30min, adding calcium chloride, stirring for 3min, adding sodium dodecyl benzene sulfonate, stirring for 3min, adding a mixture of sodium oleate and oxidized paraffin soap, stirring for 3min, and performing roughing for 3min to obtain roughing concentrate and tailings;
taking the mass of the spodumene raw ore in the step (1) as a reference, wherein the using amount of the sodium sulfide is 300 g/t; the dosage of the sodium carbonate is 1000 g/t; the dosage of the sodium hydroxide is 1000 g/t; the dosage of the calcium chloride is 300 g/t; the dosage of the sodium dodecyl benzene sulfonate is 30 g/t; the dosage of the sodium oleate is 300 g/t; the dosage of the oxidized paraffin soap is 300 g/t.
Comparative example 1
A method for improving the grade of rough concentrate of low-grade spodumene comprises the following steps:
(1) putting spodumene raw ore with the particle size of less than 1.5mm into a rod mill for fine grinding to obtain ore pulp; the mass content of spodumene with the granularity of less than 0.074mm in the ore pulp is 86 percent;
(2) adding sodium sulfide into the ore pulp obtained in the step (1), stirring for 3min, adding sodium carbonate, stirring for 3min, adding sodium hydroxide, stirring for 30min, adding calcium chloride, stirring for 3min, adding a mixture of sodium oleate and oxidized paraffin soap, stirring for 3min, and performing roughing for 3min to obtain roughed concentrate and tailings;
taking the mass of the spodumene raw ore in the step (1) as a reference, wherein the using amount of the sodium sulfide is 300 g/t; the dosage of the sodium carbonate is 1000 g/t; the dosage of the sodium hydroxide is 1000 g/t; the dosage of the calcium chloride is 300 g/t; the dosage of the sodium oleate is 300 g/t; the dosage of the oxidized paraffin soap is 300 g/t.
The results of the rougher concentrate grade and recovery of spodumene obtained in examples 1-4 and comparative example 1 are shown in table 1:
TABLE 1 spodumene rougher concentrate grade and recovery obtained in examples 1-4 and comparative example 1
| Numbering | Spodumene raw ore grade | Spodumene rougher concentrate grade/% ] | Spodumene rougher concentrate recovery/%) |
| Example 1 | 0.74 | 3.00 | 77.26 |
| Example 2 | 0.74 | 2.45 | 73.59 |
| Example 3 | 0.74 | 2.44 | 72.63 |
| Example 4 | 0.74 | 2.57 | 73.62 |
| Comparative example 1 | 0.74 | 2.19 | 72.25 |
It can be seen from table 1 that the foam stabilizer can improve both the grade and recovery rate of the spodumene rougher concentrate after being added in the rough concentration process of the spodumene crude ore, which indicates that the foam stabilizer can improve the grade of the spodumene rougher concentrate.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for improving the grade of rough concentrate of low-grade spodumene comprises the following steps:
(1) carrying out fine grinding on spodumene raw ore to obtain ore pulp;
(2) sequentially adding a regulator, an activating agent, a foam stabilizer and a collecting agent into the ore pulp obtained in the step (1), and performing roughing to obtain roughed concentrate and tailings;
the foam stabilizer is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfate; taking the quality of the spodumene raw ore in the step (1) as a reference, wherein the consumption of the foam stabilizer is 30-80 g/t;
the collecting agent is at least one of oleic acid, sodium oleate, oxidized paraffin soap and naphthenic acid.
2. The method according to claim 1, wherein the particle size of the spodumene raw ore in step (1) is less than 1.5 mm.
3. The method according to claim 1, characterized in that the ore pulp of the step (1) contains spodumene with a particle size of less than 0.074mm in an amount of 80-90% by mass.
4. The method according to claim 1, wherein the modifier in the step (2) is at least one of sodium sulfide, sodium carbonate and sodium hydroxide.
5. The method of claim 4, wherein the modifiers are sodium sulfide, sodium carbonate, and sodium hydroxide; based on the quality of the spodumene raw ore in the step (1), the using amount of the sodium sulfide is 200-500 g/t, the using amount of the sodium carbonate is 500-1500 g/t, and the using amount of the sodium hydroxide is 500-1500 g/t.
6. The method as claimed in claim 1, wherein the activating agent in step (2) is ferric chloride, calcium chloride, water glass, acidified water glass, copper sulfate or ferrous sulfate.
7. The method according to claim 1, wherein the amount of activator used in step (2) is 500g/t or less based on the mass of the spodumene raw ore in step (1).
8. The method of claim 1 wherein the collector in step (2) is a mixture of sodium oleate and oxidized paraffin soap.
9. The method according to claim 8, wherein the amount of the sodium oleate used is 200 to 400g/t and the amount of the oxidized paraffin soap used is 200 to 400g/t, based on the mass of the spodumene raw ore in the step (1).
10. The method according to claim 1, wherein the time for roughing in the step (2) is 2-10 min.
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