A new process method for efficient fluorite flotation

Abstract

The present invention discloses a new process method for efficient fluorite flotation, comprising the following steps: firstly, the ore pulp from the stirring barrel at 1# is stirred and flotation reagent is added, and after stirring for 4 times, it is transported into the 3# roughing flotation column by the 2# feeding pump. The ore pulp of the process of the present invention is circulated in a closed circuit in the roughing column and the first refinement flotation tank, and the flotation difference of the high enrichment ratio of the flotation column and the stirring flotation of the flotation tank to improve the recovery rate is utilized. A large amount of residual reagents entrained in the first refinement tailings are returned to the roughing column with the ore pulp, so that the ore pulp and the reagents react fully and float repeatedly.

Description

Technical Field

[0001] The invention relates to the technical field of fluorite flotation, and in particular to a new process method for efficient fluorite flotation. Background Art

[0002] At present, in the flotation process of associated fluorite, especially for the flotation of polymetallic ores, in the roughing operation section, the feed grade is about 20%, and the tailings grade can reach more than 7% after the roughing operation. The recovery rate of roughing can only reach about 78%, and the final recovery rate of fluorite can only reach about 58% after the concentrating operation; the high tailings in the roughing affect the improvement of the entire fluorite recovery rate, and the utilization rate of fluorite resources is not high, and there is still a lot of room for improvement. Based on this, the present invention further improves it. Summary of the invention

[0003] In view of the defects of the prior art, the purpose of the present invention is to provide a segmented dosing method for stabilizing tungsten beneficiation indicators to solve the problems raised in the above background technology.

[0004] The present invention solves the technical problem by adopting the following technical solution:

[0005] The present invention provides a new process flow method for efficient fluorite flotation, comprising the following steps:

[0006] Step 1: First, stir the slurry in the mixing barrel at 1# and add flotation reagent. After 4 stirrings, use the 2# feed pump to transport it into the 3# roughing flotation column;

[0007] Step 2: The concentrate from the roughing column enters the 4# flotation tank, and the tailings are directly discharged;

[0008] Step 3: The concentrate from the 4# first flotation tank is transported to the 7# second flotation column through the 5# feed pump, and the tailings are returned to the 3# roughing column for repeated flotation;

[0009] Step 4: The concentrate from the 7# secondary refinery flotation column enters the third refinery flotation, and the tailings are swept to the third refinery without returning to the first refinery.

[0010] Preferably, the 4# flotation cells are three 30m3 aerated flotation cells.

[0011] Preferably, the preparation method of the flotation agent is:

[0012] Chitosan is added to 2-5 times sodium alginate solution, and then sulfuric acid solution with a total amount of 5-10% chitosan is added, and the mixture is stirred thoroughly. Subsequently, modified carbon nanotubes with a total amount of 1-5% chitosan and sodium hexadecyl sulfate with a total amount of 2-4% chitosan are added, and the mixture is stirred thoroughly to obtain a flotation agent.

[0013] The flotation agent is a combination of chitosan, sodium alginate solution, and sulfuric acid solution, with modified carbon nanotubes added. The carbon nanotubes are irradiated with protons and then dispersed in a hydrochloric acid solution to improve dispersion and activity. The adjustment liquid is then treated to assist in the combination to increase the activity of the ore sample and, on the other hand, to assist in the dispersion of the ore sample and enhance the flotation efficiency.

[0014] Preferably, the mass fractions of the sodium alginate solution and the sulfuric acid solution are 10-20% and 5-10% respectively.

[0015] Preferably, the modification method of the modified carbon nanotubes is: sending the carbon nanotubes into a proton irradiation box for irradiation treatment, the irradiation power is 100-300W, the irradiation time is 30-40min, and then sending them into 5-10 times hydrochloric acid solution for ultrasonic dispersion treatment. After the ultrasonic treatment is completed, washing and drying are performed to obtain modified carbon nanotubes.

[0016] Preferably, the mass fraction of the hydrochloric acid solution is 5-10%.

[0017] Preferably, the mass fraction of the hydrochloric acid solution is 7.5%.

[0018] Preferably, the power of the ultrasonic dispersion treatment is 210-240 W, and the ultrasonic time is 20-30 min.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The ore pulp of the process of the present invention is circulated in a closed loop in the roughing column and the first refinement flotation tank, and the flotation difference of the high enrichment ratio of the flotation column and the stirring flotation of the flotation tank to improve the recovery rate is utilized. A large amount of residual reagents entrained in the first refinement tailings are returned to the roughing column with the ore pulp, so that the ore pulp and the reagents fully react and repeatedly float; thereby reducing the tailings running and improving the flotation recovery rate of fluorite; utilizing the machine column combined flotation principle of the roughing flotation column and the first refinement flotation tank and the sequential return of the middlings, the roughing and the first refinement form a closed loop, so that the flotation tank and the flotation column give full play to the flotation characteristics of their respective flotation equipment, and a large amount of reagents entrained in the foam and the middlings are reused, increasing the ore pulp in the flotation process The flotation time of the process is shortened, thereby increasing the flotation effect and achieving the goal of reducing the grade of roughing tailings; for the flotation process of associated fluorite with finer particle size, the previous mineral processing process had a high flotation fluorite tailings rate of about 8%. Compared with the previous process analysis, a new fluorite flotation process was proposed and invented and applied on site, using roughing and finishing as closed-loop circulation, using the flotation principle and flotation differentiation of flotation columns and flotation machines, and through on-site experimental data and production practice data, it can be concluded that the roughing tailings of the new process are reduced from 8% to about 4%, and the roughing recovery rate is increased from 78% to about 85%, and the roughing recovery rate is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a flow chart of the present invention;

[0022] Figure 2 This is a flow chart of the flotation process of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] A new process flow method for efficient fluorite flotation of this embodiment includes the following steps:

[0025] Step 1: First, stir the slurry in the mixing barrel at 1# and add flotation reagent. After 4 stirrings, use the 2# feed pump to transport it into the 3# roughing flotation column;

[0026] Step 2: The concentrate from the roughing column enters the 4# flotation tank, and the tailings are directly discharged;

[0027] Step 3: The concentrate from the 4# first flotation tank is transported to the 7# second flotation column through the 5# feed pump, and the tailings are returned to the 3# roughing column for repeated flotation;

[0028] Step 4: The concentrate from the 7# secondary refinery flotation column enters the third refinery flotation, and the tailings are swept to the third refinery without returning to the first refinery.

[0029] The 4# flotation cells in this embodiment are three 30m3 aerated flotation cells.

[0030] The preparation method of the flotation reagent of this embodiment is:

[0031] Chitosan is added to 2-5 times sodium alginate solution, and then sulfuric acid solution with a total amount of 5-10% chitosan is added, and the mixture is stirred thoroughly. Subsequently, modified carbon nanotubes with a total amount of 1-5% chitosan and sodium hexadecyl sulfate with a total amount of 2-4% chitosan are added, and the mixture is stirred thoroughly to obtain a flotation agent.

[0032] The mass fractions of the sodium alginate solution and the sulfuric acid solution in this embodiment are 10-20% and 5-10% respectively.

[0033] The modification method of the modified carbon nanotubes in this embodiment is: sending the carbon nanotubes into a proton irradiation box for irradiation treatment, the irradiation power is 100-300W, the irradiation time is 30-40min, and then sending them into 5-10 times hydrochloric acid solution for ultrasonic dispersion treatment. After the ultrasonic treatment is completed, washing and drying are performed to obtain modified carbon nanotubes.

[0034] The mass fraction of the hydrochloric acid solution in this embodiment is 5-10%.

[0035] The mass fraction of the hydrochloric acid solution in this embodiment is 7.5%.

[0036] The power of the ultrasonic dispersion treatment in this embodiment is 210-240W, and the ultrasonic time is 20-30min.

[0037] Embodiment 1:

[0038] A new process flow method for efficient fluorite flotation of this embodiment includes the following steps:

[0039] Step 1: First, stir the slurry in the mixing barrel at 1# and add flotation reagent. After 4 stirrings, use the 2# feed pump to transport it into the 3# roughing flotation column;

[0040] Step 2: The concentrate from the roughing column enters the 4# flotation tank, and the tailings are directly discharged;

[0041] Step 3: The concentrate from the 4# first flotation tank is transported to the 7# second flotation column through the 5# feed pump, and the tailings are returned to the 3# roughing column for repeated flotation;

[0042] Step 4: The concentrate from the 7# secondary refinery flotation column enters the third refinery flotation, and the tailings are swept to the third refinery without returning to the first refinery.

[0043] The 4# flotation cells in this embodiment are three 30m3 aerated flotation cells.

[0044] The preparation method of the flotation reagent of this embodiment is:

[0045] Chitosan was added to a 2-fold sodium alginate solution, and then a sulfuric acid solution of 5% of the total amount of chitosan was added, and the mixture was stirred thoroughly. Subsequently, modified carbon nanotubes of 1-5% of the total amount of chitosan and sodium hexadecyl sulfonate of 2% of the total amount of chitosan were added, and the mixture was stirred thoroughly to obtain a flotation agent.

[0046] The mass fractions of the sodium alginate solution and the sulfuric acid solution in this embodiment are 10% and 5% respectively.

[0047] The modification method of the modified carbon nanotubes in this embodiment is: sending the carbon nanotubes into a proton irradiation box for irradiation treatment, the irradiation power is 100W, the irradiation time is 30min, and then sending them into a 5-fold hydrochloric acid solution for ultrasonic dispersion treatment. After the ultrasonic treatment is completed, washing and drying are performed to obtain modified carbon nanotubes.

[0048] The mass fraction of the hydrochloric acid solution in this embodiment is 5%.

[0049] The power of the ultrasonic dispersion treatment in this embodiment is 210 W, and the ultrasonic time is 20 min.

[0050] Embodiment 2:

[0051] A new process flow method for efficient fluorite flotation of this embodiment includes the following steps:

[0052] Step 1: First, stir the slurry in the mixing barrel at 1# and add flotation reagent. After 4 stirrings, use the 2# feed pump to transport it into the 3# roughing flotation column;

[0053] Step 2: The concentrate from the roughing column enters the 4# flotation tank, and the tailings are directly discharged;

[0054] Step 3: The concentrate from the 4# first flotation tank is transported to the 7# second flotation column through the 5# feed pump, and the tailings are returned to the 3# roughing column for repeated flotation;

[0055] Step 4: The concentrate from the 7# secondary refinery flotation column enters the third refinery flotation, and the tailings are swept to the third refinery without returning to the first refinery.

[0056] The 4# flotation cells in this embodiment are three 30m3 aerated flotation cells.

[0057] The preparation method of the flotation reagent of this embodiment is:

[0058] Chitosan was added to 5 times sodium alginate solution, and then sulfuric acid solution accounting for 10% of the total amount of chitosan was added, and the mixture was stirred thoroughly. Subsequently, modified carbon nanotubes accounting for 5% of the total amount of chitosan and sodium hexadecyl sulfate accounting for 4% of the total amount of chitosan were added, and the mixture was stirred thoroughly to obtain a flotation agent.

[0059] The mass fractions of the sodium alginate solution and the sulfuric acid solution in this embodiment are 20% and 10% respectively.

[0060] The modification method of the modified carbon nanotubes in this embodiment is: sending the carbon nanotubes into a proton irradiation box for irradiation treatment, the irradiation power is 300W, the irradiation time is 40min, and then sending them into a 10-fold hydrochloric acid solution for ultrasonic dispersion treatment. After the ultrasonic treatment is completed, washing and drying are performed to obtain modified carbon nanotubes.

[0061] The mass fraction of the hydrochloric acid solution in this embodiment is 10%.

[0062] The power of the ultrasonic dispersion treatment in this embodiment is 240W, and the ultrasonic time is 30min.

[0063] Embodiment 3:

[0064] A new process flow method for efficient fluorite flotation of this embodiment includes the following steps:

[0065] Step 1: First, stir the slurry in the mixing barrel at 1# and add flotation reagent. After 4 stirrings, use the 2# feed pump to transport it into the 3# roughing flotation column;

[0066] Step 2: The concentrate from the roughing column enters the 4# flotation tank, and the tailings are directly discharged;

[0067] Step 3: The concentrate from the 4# first flotation tank is transported to the 7# second flotation column through the 5# feed pump, and the tailings are returned to the 3# roughing column for repeated flotation;

[0068] Step 4: The concentrate from the 7# secondary refinery flotation column enters the third refinery flotation, and the tailings are swept to the third refinery without returning to the first refinery.

[0069] The 4# flotation cells in this embodiment are three 30m3 aerated flotation cells.

[0070] The preparation method of the flotation reagent of this embodiment is:

[0071] Chitosan was added to 3.5 times sodium alginate solution, and then sulfuric acid solution with a total amount of 7.5% chitosan was added, and the mixture was stirred thoroughly. Subsequently, modified carbon nanotubes with a total amount of 3% chitosan and sodium hexadecyl sulfate with a total amount of 3% chitosan were added, and the mixture was stirred thoroughly to obtain a flotation agent.

[0072] The mass fractions of the sodium alginate solution and the sulfuric acid solution in this embodiment are 15% and 7.5% respectively.

[0073] The modification method of the modified carbon nanotubes in this embodiment is: sending the carbon nanotubes into a proton irradiation box for irradiation treatment, the irradiation power is 200W, the irradiation time is 35min, and then sending them into 7.5 times hydrochloric acid solution for ultrasonic dispersion treatment. After the ultrasonic treatment is completed, washing and drying are carried out to obtain modified carbon nanotubes.

[0074] The mass fraction of the hydrochloric acid solution in this embodiment is 7.5%.

[0075] The power of the ultrasonic dispersion treatment in this embodiment is 225W, and the ultrasonic time is 25min.

[0076] Embodiment 4:

[0077] A new process flow method for efficient fluorite flotation of this embodiment includes the following steps:

[0078] Step 1: First, stir the slurry in the mixing barrel at 1# and add flotation reagent. After 4 stirrings, use the 2# feed pump to transport it into the 3# roughing flotation column;

[0079] Step 2: The concentrate from the roughing column enters the 4# flotation tank, and the tailings are directly discharged;

[0080] Step 3: The concentrate from the 4# first flotation tank is transported to the 7# second flotation column through the 5# feed pump, and the tailings are returned to the 3# roughing column for repeated flotation;

[0081] Step 4: The concentrate from the 7# secondary refinery flotation column enters the third refinery flotation, and the tailings are swept to the third refinery without returning to the first refinery.

[0082] The 4# flotation cells in this embodiment are three 30m3 aerated flotation cells.

[0083] The preparation method of the flotation reagent of this embodiment is:

[0084] Chitosan was added to 4 times sodium alginate solution, and then 8% sulfuric acid solution of chitosan was added, and the mixture was stirred thoroughly. Subsequently, 4% modified carbon nanotubes and 3% sodium hexadecyl sulfonate of chitosan were added, and the mixture was stirred thoroughly to obtain a flotation agent.

[0085] The mass fractions of the sodium alginate solution and the sulfuric acid solution in this embodiment are 18% and 9% respectively.

[0086] The modification method of the modified carbon nanotubes in this embodiment is: sending the carbon nanotubes into a proton irradiation box for irradiation treatment, the irradiation power is 280W, the irradiation time is 38min, and then sending them into an 8-fold hydrochloric acid solution for ultrasonic dispersion treatment. After the ultrasonic treatment is completed, washing and drying are performed to obtain modified carbon nanotubes.

[0087] The mass fraction of the hydrochloric acid solution in this embodiment is 8%.

[0088] The power of the ultrasonic dispersion treatment in this embodiment is 238W, and the ultrasonic time is 28min.

[0089]

[0090] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0091] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new process method for efficient fluorite flotation, characterized in that: The following steps are involved: Step 1: First, stir the slurry in the 1# mixing barrel and add flotation reagents. After 4 stirrings, use the 2# feed pump to transport it into the 3# roughing flotation column; Step 2: The concentrate from the 3# roughing flotation column enters the 4# fine flotation tank, and the tailings are directly discharged; Step 3: The concentrate from the 4# refiner flotation tank is transported to the 7# refiner flotation column through the 5# feed pump, and the tailings are returned to the 3# rougher flotation column for repeated flotation; Step 4: The concentrate from the 7# secondary refiner flotation column enters the third refiner flotation, and the tailings are swept to the third refiner without returning to the first refiner; The 4# flotation tanks are 3 sets of 30m 3 Aerated flotation cells; The preparation method of the flotation reagent is: Chitosan is added to a sodium alginate solution of 2-5 times, and then a sulfuric acid solution of 5-10% of the total amount of chitosan is added, and the mixture is stirred and mixed thoroughly, and then modified carbon nanotubes of 1-5% of the total amount of chitosan and sodium hexadecyl sulfate of 2-4% of the total amount of chitosan are added, and the mixture is stirred thoroughly to obtain a flotation agent; The mass fractions of the sodium alginate solution and the sulfuric acid solution are 10-20% and 5-10% respectively.

2. A new process flow method for efficient fluorite flotation according to claim 1, characterized in that: The modification method of the modified carbon nanotubes is as follows: the carbon nanotubes are sent into a proton irradiation box for irradiation treatment, the irradiation power is 100-300W, the irradiation time is 30-40min, and then sent into a 5-10 times hydrochloric acid solution for ultrasonic dispersion treatment. After the ultrasonic treatment is finished, the modified carbon nanotubes are washed with water and dried to obtain the modified carbon nanotubes.

3. A new process flow method for efficient fluorite flotation according to claim 2, characterized in that: The mass fraction of the hydrochloric acid solution is 5-10%.

4. A new process flow method for efficient fluorite flotation according to claim 2, characterized in that: The mass fraction of the hydrochloric acid solution is 7.5%.

5. A new process flow method for efficient fluorite flotation according to claim 2, characterized in that: The power of the ultrasonic dispersion treatment is 210-240W, and the ultrasonic time is 20-30min.

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