CN101850964A - Spherical graphite with median diameter of 17 to 30 mu m and preparation method thereof - Google Patents
Spherical graphite with median diameter of 17 to 30 mu m and preparation method thereof Download PDFInfo
- Publication number
- CN101850964A CN101850964A CN200910172765A CN200910172765A CN101850964A CN 101850964 A CN101850964 A CN 101850964A CN 200910172765 A CN200910172765 A CN 200910172765A CN 200910172765 A CN200910172765 A CN 200910172765A CN 101850964 A CN101850964 A CN 101850964A
- Authority
- CN
- China
- Prior art keywords
- powder
- machine
- air
- nodularization
- flow vortex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a preparation method of spherical graphite with a median diameter of 17 to 30 mu m. A five-level powder refining machine set consisting of an air-flow vortex powder refining machine and a cyclone separator is sequentially connected with a fourteen-level nodulizing machine set consisting of an air-flow vortex nodulizing machine and a nodulizing classifier in series; the graphite material enters from the first powder refining machine set and then flows through the five powder refining machine sets and the fourteen nodulizing machine sets in turn and finally out of the last nodulizing machine set; and by refining and nodulizing the powder, the spherical graphite product is obtained. The spherical graphite product has a surface closed end part structure, is spherical, and has the apparent density of 0.5 to 0.88g/ml. The number of openings on the surface of the graphite powder is 9-80 per mu m. The sphericity of the product is high; the battery capacity, the standby time and the service life are effectively increased; moreover, the preparation method can improve the yield by over 80 percent, lower the cost by 40 to 50 percent, save the power consumption by 55 percent and realize the dust recovery rate up to 100%.
Description
Technical field
The present invention relates to a kind of Graphite Powder 99, spherical graphite of specifically a kind of meso-position radius 17-30 μ m and preparation method thereof
Background technology
Graphite material has good electrical conductivity, good charging/discharging voltage platform, higher specific storage and cheap advantages such as price as lithium ion battery negative material, so be the research focus of negative material always, in the commercialization lithium ion battery, be extensive use of.Many studies show that, the shape of graphite granule, crystalline structure, surface tissue, foreign matter content etc. all have substantial connection with the embedding lithium performance of graphite material.And the source of graphite is different with the course of processing, and its above-mentioned physical and chemical performance is also different, so wish to get the well behaved graphite cathode material of embedding lithium in research and production process, just must effectively control its many-sided physical and chemical index.The electrical property that the spheroidization of graphite granule is handled improving natural graphite powder has great significance, and the graphite granule sphericity is good more, and electrical property is just good more.And existing spherical graphite is because its preparation technology's restriction, produce that productive rate is low, energy consumption is big, cost is high, and it is not high to make the sphericity of spherical graphite, the performance of product is undesirable, can't satisfy the needs of technical development, cause the time that discharges and recharges, standby time and the work-ing life of battery undesirable.Also cause charging capacity little when using as the power vehicle battery, easily produce superheating phenomenon, security and practicality are low.Chinese patent application numbers 97193389.8 discloses a kind of Graphite Powder 99 of using of being suitable in the negative pole of lithium-ion secondary cell, have the layering form of the C plane layer being made of several in the lip-deep closed ends structure of Graphite Powder 99 (surperficial closed ends structure), the C plane layer is closed at its place, end around adjoining course.Between two adjacent layering closed ends structures, maintain in C plane layer open-ended one " space ", the density of clearance gap (corresponding to the density of layering closed ends structure) remarkably influenced has the loading capacity of the lithium-ion secondary cell of the negative pole that Graphite Powder 99 forms.
Loose density, measured tap density after promptly powder freely is full of standard container under prescribed condition, the quality of unit volume that promptly powder is loose when loading.The loose density of spherical graphite is the important indicator that influences the graphite performance.
Summary of the invention
Technical problem to be solved by this invention provides the preparation method of the spherical graphite of a kind of meso-position radius 17-30 μ m, and the spherical graphite product sphericity height, the chemical property that make are good.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be: the preparation method of the spherical graphite of meso-position radius 17-30 μ m, five powder refinement units that employing is made up of air-flow vortex powder refinement machine and cyclonic separator, be connected in series in proper order with 14 nodularization units being made up of air-flow vortex balling machine and nodularization sorting equipment, the preparation method is as follows:
Step 1, be 50 orders with granularity--the natural flake graphite raw material of 325 orders, carbon amount＞60%, send into the thinning process of the air-flow vortex powder refinement machine enforcement powder in the first powder refinement unit, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000-3000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 50-150r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into cyclonic separator separate, isolate the Graphite Powder 99 of particle diameter＞3 μ m;
Step 2, by the Graphite Powder 99 of the isolated particle diameter of step 1＞3 μ m, send into the thinning process of the air-flow vortex powder refinement machine enforcement powder in the second powder refinement unit, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000-3000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 150-200r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into cyclonic separator separate, isolate the Graphite Powder 99 of particle diameter＞3 μ m;
Step 3, by the Graphite Powder 99 of the isolated particle diameter of step 2＞3 μ m, send into the thinning process of the air-flow vortex powder refinement machine enforcement powder in the 3rd powder refinement unit, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000-3000r/min, internal classification leaf wheel rotating speed in the air-flow vortex powder refinement machine is 100-120r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into cyclonic separator separate, isolate the Graphite Powder 99 of particle diameter 3-150 μ m;
Step 4, by the Graphite Powder 99 of the isolated particle diameter 3-150 of step 3 μ m, send into the thinning process of the air-flow vortex powder refinement machine enforcement powder in the 4th powder refinement unit, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000-3000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 380-450r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into cyclonic separator separate, isolate the Graphite Powder 99 of particle diameter 3-140 μ m;
Step 5, by the Graphite Powder 99 of the isolated particle diameter 3-140 of step 4 μ m, send into the thinning process of the air-flow vortex powder refinement machine enforcement powder in the 5th powder refinement unit, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000-3000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 400r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into cyclonic separator separate, isolate the Graphite Powder 99 of particle diameter 3-128 μ m;
Step 6, Graphite Powder 99 by the isolated particle diameter 3-128 of step 5 μ m, send into the air-flow vortex balling machine in the first nodularization unit, by eddy current, turbulent flow drives implements collision, friction, reunite, closely knit nodularization process, the rotating speed 3000-4800r/min of air-flow vortex balling machine, internal classification machine wheel speed in the air-flow vortex balling machine is 50-100r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine first group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 2800-6000r/min in the nodularization grading machine, Graphite Powder 99 is 10-60 second from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 4-125 μ m, the Graphite Powder 99 of particle diameter 4-125 μ m flows to the air-flow vortex balling machine in the second nodularization unit; Isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 7, Graphite Powder 99 through the isolated particle diameter 4-125 of step 6 μ m, flow into nodularization once more behind the air-flow vortex balling machine in the second nodularization unit, the rotating speed 3000-4800r/min of the air-flow vortex balling machine in the second nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 150-200r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine second group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 2800-6000r/min in the nodularization grading machine, Graphite Powder 99 is 10-60 second from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 4-120 μ m, air-flow vortex balling machine and the nodularization grading machine of the Graphite Powder 99 sequential flow of particle diameter 4-120 μ m in the third and fourth nodularization unit continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the third and fourth nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 7;
Step 8, by the Graphite Powder 99 after the step 7 nodularization, order flows into the air-flow vortex balling machine in the 5th to the 7th nodularization unit, the nodularization grading machine, the rotating speed 3000-4800r/min of the air-flow vortex balling machine in the 5th to the 7th nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 250-300r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex balling machine to the effusive time, effusive respectively Graphite Powder 99 flows into the nodularization grading machine in the 5th group to the 7th group respectively from the 5th group to the 7th group air-flow vortex balling machine, carry out in secondary nodularization and the classification process, wheel speed in the nodularization grading machine is 2800-6000r/min, Graphite Powder 99 is 10-60 second from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 4-115 μ m, the air-flow vortex balling machine of Graphite Powder 99 sequential flow in the 8th and the 12 nodularization unit of particle diameter 4-115 μ m, the nodularization grading machine continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the 8th and the 12 nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 8;
Step 9, the Graphite Powder 99 of the particle diameter 4-115 μ m that goes out by the step 8 nodularization, flow into the air-flow vortex balling machine in the 13 nodularization unit, the rotating speed 3000-4800r/min of the air-flow vortex balling machine in the 13 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 5-40 second from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 13 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 10-60 second from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 4-112 μ m, the Graphite Powder 99 of isolated particle diameter 4-112 μ m flows to the air-flow vortex balling machine in the 14 nodularization unit, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 10, the Graphite Powder 99 of the particle diameter 4-112 μ m that goes out through the step 9 nodularization, flow into the air-flow vortex balling machine in the 14 nodularization unit, the rotating speed 3000-4800r/min of the air-flow vortex balling machine in the 14 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 10-60 second from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 14 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 5-30 second from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 5-110 μ m, the Graphite Powder 99 of isolated particle diameter 5-110 μ m flows to feed bin, and the meso-position radius that makes the spherical graphite powder is the spherical graphite product of 17-30 μ m; Isolated graphite dust flows to cyclonic separator and pulse device for recovering powder.
Among the present invention, the spherical graphite that utilizes the preparation method of technique scheme to make, has the closed end construction in surface, the graphite powder be shaped as sphere, the surface has opening, the meso-position radius of described spherical graphite powder is 17-30 μ m, and its loose density is 0.5-0.88g/ml, and the open amount on Graphite Powder 99 surface is 9-80/μ m.
In the art, usually D50, D90 or D10 statement are adopted in the size distribution statement of graphite, wherein D represents the diameter of powder granule, and D50 represents the diameter (or claiming that 50% passes through particle diameter) of 50% of accumulative total, D10 represents the diameter of 10% of accumulative total, and D50 claims median size or meso-position radius again.The meso-position radius difference of Graphite Powder 99, its loose density are also different, the Graphite Powder 99 identical to meso-position radius, and the particle sphericity is good more, and the Graphite Powder 99 loose density is high more.
The invention has the beneficial effects as follows: by in the preparation process of technique scheme to the adjustment of equipment components rotating speed, utilize turbulent flow, the effect of eddy current drives the thinning process that Graphite Powder 99 is implemented powder earlier, after making its particle diameter be reduced to a certain degree, implement the nodularization process again, finally make spherical graphite with described loose density and surface tissue, its product good sphericity, has bigger loose density, chemistry and Heat stability is good, chemical property is significantly improved, not only can be used as lithium ion battery negative material, also can become the starting material of isotropic graphite high-end products such as nuclear graphite.Have good embedding lithium performance as graphite cathode material, can reversible to greatest extent removal lithium embedded ion, the reversible capacity first and the coulombic efficiency of graphite cathode obviously improve.Effectively improved cell container, standby time and work-ing life, and can not produce superheating phenomenon, security and practicality are good.This preparation method compared with prior art can improve productive rate more than 80%, the 40-50% that reduces cost, and current consumption saves 55%, the dust rate of recovery 100%.
Embodiment
The preparation method of the spherical graphite of meso-position radius 17-30 μ m, the Pyatyi powder refinement unit that employing is made up of air-flow vortex powder refinement machine and cyclonic separator, be connected in series in proper order with the ten level Four nodularization units of forming by air-flow vortex balling machine and nodularization sorting equipment, graphite raw material is entered by first powder refinement unit, flow through successively behind five powder refinement units and 14 the nodularization units, flowed out by last nodularization unit, graphite raw material makes the spherical graphite product through the refinement and the nodularization process of powder.The powder refinement unit that is provided with and the group number of nodularization unit also can be adjusted as required.The spherical graphite product that makes has the closed end construction in surface, the graphite powder be shaped as sphere, the surface has opening, its loose density is 0.5-0.88g/ml, the open amount on Graphite Powder 99 surface is 9-80/μ m.
The air-flow vortex powder refinement machine of powder refinement unit can be selected QWJ-60 type air-flow vortex pulverizing mill for use in technique scheme, and the air-flow vortex balling machine of nodularization unit can be selected QWJ-30 type air-flow vortex pulverizing mill for use.Selected air-flow vortex powder refinement machine and air-flow vortex balling machine, its inside has rotating disk (being powder refinement dish) and internal classification impeller, the body inwall is provided with the gear ring corresponding with rotating disk, graphite raw material is delivered to the rotating disk below from opening for feed, drive the internal classification impeller that the slit of passing between rotating disk and the gear ring arrives body upper by air-flow, qualified Graphite Powder 99 flows out from discharge port by impeller, thicker graphite granule is then thrown away by impeller and is fallen, and Graphite Powder 99 acts in the body constantly circulation with the refinement (promptly reducing particle diameter) that reaches powder and the purpose of nodularization (being spheroidization) by air-flow.It is that micro mist prepares the common equipment in the classification process that cyclonic separator is called loading head again.Nodularization grading machine inside is provided with classifying turbine, and the centrifugal force that utilizes wind-force and impeller to produce makes Graphite Powder 99 carry out the process of nodularization and shunting in body.Air-flow vortex powder refinement machine, cyclonic separator, pulse device for recovering powder and negative pressure vacuum fan (can use high pressure centrifugal ventilator) are by airduct order serial connection in powder refinement unit; Air-flow vortex balling machine, nodularization grading machine, cyclonic separator, pulse device for recovering powder and negative pressure vacuum fan are by airduct order serial connection in the nodularization unit.The conveying of negative pressure in equipment that Graphite Powder 99 relies on negative-pressure air fan to produce.The motor that uses in the equipment can use speed control by frequency variation, does not have added losses, good energy-conserving effect in rotating speed control accuracy height, the speed regulation process.
Embodiment 1
Meso-position radius is that the preparation process of 30 μ m spherical graphites is as follows:
Step 1, be 50 orders with particle diameter--the natural flake graphite raw material of 325 orders, carbon amount＞60%, send into first group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2200r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 50r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter＞10 μ m;
Step 2, by the Graphite Powder 99 of the isolated particle diameter of step 1＞10 μ m, send into second group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2400r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 200r/min, Graphite Powder 99 is 20 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter＞10 μ m;
Step 3, by the Graphite Powder 99 of the isolated particle diameter of step 2＞10 μ m, send into the 3rd group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000r/min, internal classification leaf wheel rotating speed in the air-flow vortex powder refinement machine is 110r/min, Graphite Powder 99 is 30 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 10-150 μ m;
Step 4, by the Graphite Powder 99 of the isolated particle diameter 10-150 of step 3 μ m, send into the 4th group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 380r/min, Graphite Powder 99 is 25 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 10-140 μ m;
Step 5, by the Graphite Powder 99 of the isolated particle diameter 10-140 of step 4 μ m, send into the 5th group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 400r/min, Graphite Powder 99 is 30 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 10-128 μ m;
Step 6, Graphite Powder 99 by the isolated particle diameter 10-128 of step 5 μ m, send into the air-flow vortex balling machine in the first nodularization unit, by eddy current, turbulent flow drives implements collision, friction, reunite, closely knit nodularization process, the rotating speed 3500r/min of air-flow vortex balling machine, internal classification machine wheel speed in the air-flow vortex balling machine is 80r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine first group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 6000r/min in the nodularization grading machine, Graphite Powder 99 is 30 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-125 μ m, the Graphite Powder 99 of particle diameter 10-125 μ m flows to the air-flow vortex balling machine in the second nodularization unit; Isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 7, Graphite Powder 99 through the isolated particle diameter 10-125 of step 6 μ m, flow into nodularization once more behind the air-flow vortex balling machine in the second nodularization unit, the rotating speed 3400r/min of the air-flow vortex balling machine in the second nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 160r/min, Graphite Powder 99 is 25 seconds from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine second group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 6000r/min in the nodularization grading machine, Graphite Powder 99 is 35 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-120 μ m, air-flow vortex balling machine and the nodularization grading machine of the Graphite Powder 99 sequential flow of particle diameter 10-120 μ m in the third and fourth nodularization unit continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the third and fourth nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 7;
Step 8, by the Graphite Powder 99 after the step 7 nodularization, order flows into the air-flow vortex balling machine in the 5th to the 7th nodularization unit, the nodularization grading machine, the rotating speed 3600r/min of the air-flow vortex balling machine in the 5th to the 7th nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 260r/min, Graphite Powder 99 is 25 seconds from entering air-flow vortex balling machine to the effusive time, effusive respectively Graphite Powder 99 flows into the nodularization grading machine in the 5th group to the 7th group respectively from the 5th group to the 7th group air-flow vortex balling machine, carry out in secondary nodularization and the classification process, wheel speed in the nodularization grading machine is 6000r/min, Graphite Powder 99 is 45 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-115 μ m, the air-flow vortex balling machine of Graphite Powder 99 sequential flow in the 8th and the 12 nodularization unit of particle diameter 10-115 μ m, the nodularization grading machine continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the 8th and the 12 nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 8;
Step 9, the Graphite Powder 99 of the particle diameter 10-115 μ m that goes out by the step 8 nodularization, flow into the air-flow vortex balling machine in the 13 nodularization unit, the rotating speed 3200r/min of the air-flow vortex balling machine in the 13 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 13 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 6000r/min in the nodularization grading machine, Graphite Powder 99 is 35 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-112 μ m, the Graphite Powder 99 of isolated particle diameter 10-112 μ m flows to the air-flow vortex balling machine in the 14 nodularization unit, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 10, the Graphite Powder 99 of the particle diameter 10-112 μ m that goes out through the step 9 nodularization, flow into the air-flow vortex balling machine in the 14 nodularization unit, the rotating speed 3300r/min of the air-flow vortex balling machine in the 14 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 20 seconds from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 14 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 6000r/min in the nodularization grading machine, Graphite Powder 99 is 20 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-110 μ m, the Graphite Powder 99 of isolated particle diameter 10-110 μ m flows to feed bin, and making meso-position radius is the spherical graphite product of 30 μ m; Isolated graphite dust flows to cyclonic separator and the pulse device for recovering powder makes byproduct.
The Graphite Powder 99 that makes, its loose density are 0.5g/ml, and the open amount of powder surface is 40-80/μ m.
Embodiment 2
Meso-position radius is the spherical graphite of 25 μ m, and its preparation process is as follows:
Step 1, be 50 orders with granularity--the natural flake graphite raw material of 325 orders, carbon amount＞60%, send into first group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 130r/min, Graphite Powder 99 is 30 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter＞9 μ m;
Step 2, by the Graphite Powder 99 of the isolated particle diameter of step 1＞9 μ m, send into second group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 190r/min, Graphite Powder 99 is 25 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter＞9 μ m;
Step 3, by the Graphite Powder 99 of the isolated particle diameter of step 2＞9 μ m, send into the 3rd group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2600r/min, internal classification leaf wheel rotating speed in the air-flow vortex powder refinement machine is 120r/min, Graphite Powder 99 is 23 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 9-80 μ m;
Step 4, by the Graphite Powder 99 of the isolated particle diameter 9-80 of step 3 μ m, send into the 4th group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2800r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 400r/min, Graphite Powder 99 is 15 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 9-70 μ m;
Step 5, by the Graphite Powder 99 of the isolated particle diameter 9-70 of step 4 μ m, send into the 5th group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2650r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 400r/min, Graphite Powder 99 is 18 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 9-65 μ m;
Step 6, Graphite Powder 99 by the isolated particle diameter 9-65 of step 5 μ m, send into the air-flow vortex balling machine in the first nodularization unit, by eddy current, turbulent flow drives implements collision, friction, reunite, closely knit nodularization process, the rotating speed 4000r/min of air-flow vortex balling machine, internal classification machine wheel speed in the air-flow vortex balling machine is 60r/min, Graphite Powder 99 is 20 seconds from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine first group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 4500r/min in the nodularization grading machine, Graphite Powder 99 is 45 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-60 μ m, the Graphite Powder 99 of particle diameter 10-60 μ m flows to the air-flow vortex balling machine in the second nodularization unit; Isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 7, Graphite Powder 99 through the isolated particle diameter 10-60 of step 6 μ m, flow into nodularization once more behind the air-flow vortex balling machine in the second nodularization unit, the rotating speed 4000r/min of the air-flow vortex balling machine in the second nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 180r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine second group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 45 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-58 μ m, air-flow vortex balling machine and the nodularization grading machine of the Graphite Powder 99 sequential flow of particle diameter 10-58 μ m in the third and fourth nodularization unit continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the third and fourth nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 7;
Step 8, by the Graphite Powder 99 after the step 7 nodularization, order flows into the air-flow vortex balling machine in the 5th to the 7th nodularization unit, the nodularization grading machine, the rotating speed 4100r/min of the air-flow vortex balling machine in the 5th to the 7th nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 280r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex balling machine to the effusive time, effusive respectively Graphite Powder 99 flows into the nodularization grading machine in the 5th group to the 7th group respectively from the 5th group to the 7th group air-flow vortex balling machine, carry out in secondary nodularization and the classification process, wheel speed in the nodularization grading machine is 4400r/min, Graphite Powder 99 is 40 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-56 μ m, the air-flow vortex balling machine of Graphite Powder 99 sequential flow in the 8th and the 12 nodularization unit of particle diameter 10-56 μ m, the nodularization grading machine continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the 8th and the 12 nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 8;
Step 9, the Graphite Powder 99 of the particle diameter 10-54 μ m that goes out by the step 8 nodularization, flow into the air-flow vortex balling machine in the 13 nodularization unit, the rotating speed 4000r/min of the air-flow vortex balling machine in the 13 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 15 seconds from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 13 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 45 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 10-53 μ m, the Graphite Powder 99 of isolated particle diameter 10-53 μ m flows to the air-flow vortex balling machine in the 14 nodularization unit, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 10, the Graphite Powder 99 of the particle diameter 10-53 μ m that goes out through the step 9 nodularization, flow into the air-flow vortex balling machine in the 14 nodularization unit, the rotating speed 4000r/min of the air-flow vortex balling machine in the 14 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 15 seconds from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 14 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 10 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 11-52 μ m, the Graphite Powder 99 of isolated particle diameter 11-52 μ m flows to feed bin, and making meso-position radius is the spherical graphite product of 25 μ m; Isolated graphite dust flows to cyclonic separator and the pulse device for recovering powder can make byproduct.
The Graphite Powder 99 that makes, its loose density are 0.62g/ml, and the open amount of Graphite Powder 99 surface is 25-60/μ m.
Embodiment 3
Meso-position radius is the spherical graphite of 20 μ m, and preparation process is as follows:
Step 1, be 50 orders with granularity--the natural flake graphite raw material of 325 orders, carbon amount＞60%, send into first group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2200r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 100r/min, Graphite Powder 99 is 20 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter＞6 μ m;
Step 2, by the Graphite Powder 99 of the isolated particle diameter of step 1＞6 μ m, send into second group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2300r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 150r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter＞6 μ m;
Step 3, by the Graphite Powder 99 of the isolated particle diameter of step 2＞6 μ m, send into the 3rd group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2400r/min, internal classification leaf wheel rotating speed in the air-flow vortex powder refinement machine is 100r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 6-65 μ m;
Step 4, by the Graphite Powder 99 of the isolated particle diameter 6-65 of step 3 μ m, send into the 4th group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2500r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 450r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 6-60 μ m;
Step 5, by the Graphite Powder 99 of the isolated particle diameter 6-60 of step 4 μ m, send into the 5th group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2350r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 400r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 6-55 μ m;
Step 6, Graphite Powder 99 by the isolated particle diameter 6-55 of step 5 μ m, send into the air-flow vortex balling machine in the first nodularization unit, by eddy current, turbulent flow drives implements collision, friction, reunite, closely knit nodularization process, the rotating speed 3000r/min of air-flow vortex balling machine, internal classification machine wheel speed in the air-flow vortex balling machine is 100r/min, Graphite Powder 99 is 35 seconds from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine first group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 3800r/min in the nodularization grading machine, Graphite Powder 99 is 60 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 7-52 μ m, the Graphite Powder 99 of particle diameter 7-52 μ m flows to the air-flow vortex balling machine in the second nodularization unit; Isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 7, Graphite Powder 99 through the isolated particle diameter 7-52 of step 6 μ m, flow into nodularization once more behind the air-flow vortex balling machine in the second nodularization unit, the rotating speed 4800r/min of the air-flow vortex balling machine in the second nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 150r/min, Graphite Powder 99 is 10 seconds from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine second group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 3500r/min in the nodularization grading machine, Graphite Powder 99 is 60 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 7-50 μ m, air-flow vortex balling machine and the nodularization grading machine of the Graphite Powder 99 sequential flow of particle diameter 7-50 μ m in the third and fourth nodularization unit continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the third and fourth nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 7;
Step 8, by the Graphite Powder 99 after the step 7 nodularization, order flows into the air-flow vortex balling machine in the 5th to the 7th nodularization unit, the nodularization grading machine, the rotating speed 3000r/min of the air-flow vortex balling machine in the 5th to the 7th nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 300r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex balling machine to the effusive time, effusive respectively Graphite Powder 99 flows into the nodularization grading machine in the 5th group to the 7th group respectively from the 5th group to the 7th group air-flow vortex balling machine, carry out in secondary nodularization and the classification process, wheel speed in the nodularization grading machine is 3200r/min, Graphite Powder 99 is 60 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 7-48 μ m, the air-flow vortex balling machine of Graphite Powder 99 sequential flow in the 8th and the 12 nodularization unit of particle diameter 7-48 μ m, the nodularization grading machine continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the 8th and the 12 nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 8;
Step 9, the Graphite Powder 99 of the particle diameter 7-48 μ m that goes out by the step 8 nodularization, flow into the air-flow vortex balling machine in the 13 nodularization unit, the rotating speed 3000r/min of the air-flow vortex balling machine in the 13 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 35 seconds from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 13 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 60 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 7-46 μ m, the Graphite Powder 99 of isolated particle diameter 7-46 μ m flows to the air-flow vortex balling machine in the 14 nodularization unit, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 10, the Graphite Powder 99 of the particle diameter 7-46 μ m that goes out through the step 9 nodularization, flow into the air-flow vortex balling machine in the 14 nodularization unit, the rotating speed 3000r/min of the air-flow vortex balling machine in the 14 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 14 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 30 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 8-45 μ m, the Graphite Powder 99 of isolated particle diameter 8-45 μ m flows to feed bin, and making meso-position radius is the spherical graphite product of 20 μ m; Isolated graphite dust flows to cyclonic separator and pulse device for recovering powder.
The Graphite Powder 99 that makes, its loose density are 0.72g/ml, and the open amount of powder surface is 15-40/μ m.
Embodiment 4
Meso-position radius is the spherical graphite of 17 μ m, and preparation process is as follows:
Step 1, be 50 orders with granularity--the natural flake graphite raw material of 325 orders, carbon amount＞60%, send into first group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 3000r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 150r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter＞3 μ m;
Step 2, by the Graphite Powder 99 of the isolated particle diameter of step 1＞3 μ m, send into second group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2950r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 180r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter＞3 μ m;
Step 3, by the Graphite Powder 99 of the isolated particle diameter of step 2＞3 μ m, send into the 3rd group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2900r/min, internal classification leaf wheel rotating speed in the air-flow vortex powder refinement machine is 120r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 3-60 μ m;
Step 4, by the Graphite Powder 99 of the isolated particle diameter 3-60 of step 3 μ m, send into the 4th group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2900r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 420r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 3-55 μ m;
Step 5, by the Graphite Powder 99 of the isolated particle diameter 3-55 of step 4 μ m, send into the 5th group of air-flow vortex powder refinement machine in the powder refinement unit and implement the thinning process of powder, powder refinement dish rotating speed in the air-flow vortex powder refinement machine is 2900r/min, internal classification machine wheel speed in the air-flow vortex powder refinement machine is 400r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex powder refinement machine to the effusive time, after effusive Graphite Powder 99 sent into the air-flow vortex separator separate, isolate the Graphite Powder 99 of particle diameter 3-50 μ m;
Step 6, Graphite Powder 99 by the isolated particle diameter 3-50 of step 5 μ m, send into the air-flow vortex balling machine in the first nodularization unit, by eddy current, turbulent flow drives implements collision, friction, reunite, closely knit nodularization process, the rotating speed 4800r/min of air-flow vortex balling machine, internal classification machine wheel speed in the air-flow vortex balling machine is 50r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine first group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 2800r/min in the nodularization grading machine, Graphite Powder 99 is 10 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 4-48 μ m, the Graphite Powder 99 of particle diameter 4-48 μ m flows to the air-flow vortex balling machine in the second nodularization unit; Isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 7, Graphite Powder 99 through the isolated particle diameter 4-48 of step 6 μ m, flow into nodularization once more behind the air-flow vortex balling machine in the second nodularization unit, the rotating speed 3000r/min of the air-flow vortex balling machine in the second nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 200r/min, Graphite Powder 99 is 40 seconds from entering air-flow vortex balling machine to the effusive time, send into nodularization grading machine second group from the effusive Graphite Powder 99 of air-flow vortex balling machine, carry out secondary nodularization and classification, wheel speed 2800r/min in the nodularization grading machine, Graphite Powder 99 is 10 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 4-45 μ m, air-flow vortex balling machine and the nodularization grading machine of the Graphite Powder 99 sequential flow of particle diameter 4-45 μ m in the third and fourth nodularization unit continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the third and fourth nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 7;
Step 8, by the Graphite Powder 99 after the step 7 nodularization, order flows into the air-flow vortex balling machine in the 5th to the 7th nodularization unit, the nodularization grading machine, the rotating speed 4800r/min of the air-flow vortex balling machine in the 5th to the 7th nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 250r/min, Graphite Powder 99 is 15 seconds from entering air-flow vortex balling machine to the effusive time, effusive respectively Graphite Powder 99 flows into the nodularization grading machine in the 5th group to the 7th group respectively from the 5th group to the 7th group air-flow vortex balling machine, carry out in secondary nodularization and the classification process, wheel speed in the nodularization grading machine is 2800r/min, Graphite Powder 99 is 10 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 4-43 μ m, the air-flow vortex balling machine of Graphite Powder 99 sequential flow in the 8th and the 12 nodularization unit of particle diameter 4-43 μ m, the nodularization grading machine continues to repeat nodularization, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Air-flow vortex balling machine in the 8th and the 12 nodularization unit, the nodularization process of nodularization grading machine, the method for its nodularization is identical with the described process of technical parameter and step 8;
Step 9, the Graphite Powder 99 of the particle diameter 4-43 μ m that goes out by the step 8 nodularization, flow into the air-flow vortex balling machine in the 13 nodularization unit, the rotating speed 4800r/min of the air-flow vortex balling machine in the 13 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 13 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 10 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 4-41 μ m, the Graphite Powder 99 of isolated particle diameter 4-41 μ m flows to the air-flow vortex balling machine in the 14 nodularization unit, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 10, the Graphite Powder 99 of the particle diameter 4-41 μ m that goes out through the step 9 nodularization, flow into the air-flow vortex balling machine in the 14 nodularization unit, the rotating speed 4800r/min of the air-flow vortex balling machine in the 14 nodularization unit, internal classification machine wheel speed in the air-flow vortex balling machine is 400r/min, Graphite Powder 99 is 5 seconds from entering air-flow vortex balling machine to the effusive time, flow into nodularization grading machine the 14 group from the effusive Graphite Powder 99 of air-flow vortex balling machine, proceed secondary nodularization and classification, wheel speed 4300r/min in the nodularization grading machine, Graphite Powder 99 is 10 seconds from entering nodularization grading machine to the effusive time, isolate the Graphite Powder 99 of particle diameter 5-40 μ m, the Graphite Powder 99 of isolated particle diameter 5-40 μ m flows to feed bin, and making meso-position radius is the spherical graphite product of 17 μ m; Isolated graphite dust flows to cyclonic separator and pulse device for recovering powder.
The Graphite Powder 99 that makes, its loose density are 0.88g/ml, and the open amount of Graphite Powder 99 surface is 9-25/μ m.
Claims (2)
1. the preparation method of the spherical graphite of meso-position radius 3-10 μ m, five powder refinement units that employing is made up of air-flow vortex powder refinement machine and cyclonic separator, be connected in series in proper order with 14 nodularization units being made up of air-flow vortex balling machine and nodularization grading machine, it is characterized in that: the preparation method is as follows:
Step 1, employing particle diameter are 50 orders--325 orders, the natural flake graphite of carbon content more than 60% are raw material, earlier raw material is sent into the thinning process of implementing powder in first group the air-flow vortex powder refinement machine for the first time, air-flow vortex powder refinement machine rotating speed is 2600-3000r/min, the rotating speed 200-600r/min of the internal classification machine impeller in the air-flow vortex powder refinement machine, the time of powder thinning process is 50-90 second, and Graphite Powder 99 flows out the cyclonic separator of first group of back automatic stream;
Step 2, the Graphite Powder 99 after the step 1 refinement, flow to cyclonic separator, after cyclonic separator is isolated the Graphite Powder 99 that particle diameter is 1.5 μ m-80 μ m, the Graphite Powder 99 of particle diameter 1.5 μ m-80 μ m flows to second group air-flow vortex powder refinement machine, the isolated graphite dust of cyclonic separator flows to the pulse device for recovering powder through transfer lime;
Step 3, flow into second group of Graphite Powder 99 in the air-flow vortex powder refinement machine through step 2, in air-flow vortex powder refinement machine, implement the thinning process of powder for the second time, the rotating speed of air-flow vortex powder refinement machine is 2600-3000r/min, internal classification machine wheel speed 400-600r/min in the air-flow vortex powder refinement machine, the time of powder thinning process is 50-90 second, Graphite Powder 99 flows out, flow to second group cyclonic separator, isolating particle diameter is the Graphite Powder 99 of 1.5 μ m-72 μ m, the Graphite Powder 99 of particle diameter 1.5 μ m-72 μ m flows to the 3rd group air-flow vortex powder refinement machine, and the isolated graphite dust of cyclonic separator flows to the pulse device for recovering powder;
Step 4, Graphite Powder 99 through the isolated particle diameter 1.5 μ m-72 μ m of step 3, flow to the thinning process of implementing powder in the 3rd group the air-flow vortex powder refinement machine once more, the rotating speed of air-flow vortex powder refinement machine is 2500-3000r/min, internal classification machine wheel speed 500-600r/min in the air-flow vortex powder refinement machine, the time of powder thinning process is 50-90 second, Graphite Powder 99 flows to the 3rd group cyclonic separator after flowing out, isolating particle diameter is the Graphite Powder 99 of 1.5 μ m-63 μ m, the Graphite Powder 99 of particle diameter 1.5 μ m-63 μ m flows to the 4th group air-flow vortex powder refinement machine, and the isolated graphite dust of cyclonic separator flows to the pulse device for recovering powder;
Step 5, Graphite Powder 99 through the isolated particle diameter 1.5 μ m-63 μ m of step 4, flow to the thinning process that continues to implement powder behind the 4th group the air-flow vortex powder refinement machine, the rotating speed of air-flow vortex powder refinement machine is 2500-3000r/min, internal classification machine wheel speed 400-500r/min in the air-flow vortex powder refinement machine, the time of powder thinning process is 50-90 second, Graphite Powder 99 after refinement flows to the 4th group cyclonic separator, isolate the Graphite Powder 99 of particle diameter 1.5 μ m-54 μ m, the Graphite Powder 99 of particle diameter 1.5 μ m-54 μ m flows to the 5th group air-flow vortex powder refinement machine, and the isolated graphite dust of cyclonic separator flows to the pulse device for recovering powder;
Step 6, Graphite Powder 99 through the isolated particle diameter 1.5 μ m-54 μ m of step 5, flow to the thinning process of implementing powder behind the 5th group the air-flow vortex powder refinement machine once more, the rotating speed of air-flow vortex powder refinement machine is 2500-3000r/min, internal classification machine wheel speed 400r/min in the air-flow vortex powder refinement machine, the time of powder thinning process is 50-90 second, Graphite Powder 99 after the refinement flows to the cyclonic separator in the 5th group, isolating particle diameter is the Graphite Powder 99 of 1.5 μ m-45 μ m, the Graphite Powder 99 of particle diameter 1.5 μ m-45 μ m flows to first group air-flow vortex balling machine, and the isolated graphite dust of cyclonic separator flows to the pulse device for recovering powder;
Step 7, Graphite Powder 99 through the isolated particle diameter 1.5 μ m-45 μ m of step 6, after flowing into first group air-flow vortex balling machine, by eddy current, turbulent flow drives implements collision, friction, reunite, closely knit nodularization process, the rotating speed 2900-5000r/min of air-flow vortex balling machine, internal classification machine wheel speed 400-600r/min in the air-flow vortex balling machine, nodularization time 45-90 second, Graphite Powder 99 after the nodularization flows to the nodularization grading machine in first group, Graphite Powder 99 carries out secondary nodularization and classification in the nodularization grading machine, interior wheel speed 4500-6000r/min in the nodularization grading machine, time 20-60 second, isolate the Graphite Powder 99 of particle diameter＞1.5 μ m, particle diameter＞Graphite Powder 99 of 1.5 μ m flows to second group air-flow vortex balling machine, and isolated graphite dust flows to cyclonic separator and pulse device for recovering powder;
Step 8, Graphite Powder 99 through the isolated particle diameter of step 7＞1.5 μ m, flow into nodularization once more behind second group the air-flow vortex balling machine, the rotating speed 2900-5000r/min of air-flow vortex balling machine, internal classification machine wheel speed 400-450r/min in the air-flow vortex balling machine, nodularization time 45-90 second, Graphite Powder 99 after the nodularization flows into second group nodularization grading machine, carry out secondary nodularization and classification, interior wheel speed 4300-5800r/min in the nodularization grading machine, isolate the Graphite Powder 99 of particle diameter＞1.5 μ m through the nodularization grading machine, the Graphite Powder 99 of particle diameter＞1.5 μ m flows to the 3rd group air-flow vortex balling machine, flows to cyclonic separator and pulse device for recovering powder through the isolated graphite dust of nodularization grading machine;
Step 9, Graphite Powder 99 through the isolated particle diameter of step 8＞1.5 μ m, continue nodularization after flowing into the 3rd group air-flow vortex balling machine, the rotating speed 2900-5000r/min of air-flow vortex balling machine, internal classification machine wheel speed 400-450r/min in the air-flow vortex balling machine, nodularization time 45-90 second, Graphite Powder 99 flows to the 3rd group nodularization grading machine after nodularization, carry out secondary nodularization and classification, interior wheel speed 4300-5850r/min in the nodularization grading machine, isolate the Graphite Powder 99 of particle diameter＞1.5 μ m through the nodularization grading machine, the Graphite Powder 99 of particle diameter＞1.5 μ m flows to the 4th group air-flow vortex balling machine, flows to cyclonic separator and pulse device for recovering powder through the isolated graphite dust of nodularization grading machine;
Step 10, through the Graphite Powder 99 of the isolated particle diameter of step 9＞1.5 μ m, flow in the 4th group the air-flow vortex balling machine and continue nodularization, its nodularization process is carried out according to every standard of described nodularization process of step 9 and setting; From the nodularization process of 13 groups of the 4th group nodularization processes to the, every standard of the step of its nodularization, method, setting, all the standard with the described nodularization process of step 9, step, setting is identical;
Step 11, through the isolated Graphite Powder 99 of step 10, flow into nodularization once more behind the 14 group the air-flow vortex balling machine, the rotating speed 2900-5000r/min of air-flow vortex balling machine, internal classification machine wheel speed 400r/min in the air-flow vortex balling machine, nodularization time 10-30 second, Graphite Powder 99 after the nodularization flows into the 14 group nodularization grading machine, Graphite Powder 99 carries out nodularization and classification in the nodularization grading machine, interior wheel speed in the nodularization grading machine is 4500-5700r/min, the final nodularization of nodularization grading machine and isolate the Graphite Powder 99 of particle diameter＞1.5 μ m, the Graphite Powder 99 of particle diameter＞1.5 μ m flows into feed bin, makes the spherical graphite product of meso-position radius 3-10 μ m; Flow to cyclonic separator and pulse device for recovering powder through the isolated graphite dust of nodularization grading machine.
2. the spherical graphite that preparation method according to claim 1 makes, the employing natural flake graphite is made, has the closed end construction in surface, the graphite powder be shaped as sphere, the surface has opening, it is characterized in that: the meso-position radius of described spherical graphite powder is 3-10 μ m, and its specific surface area is 8.0-12m
2/ g, the open amount of Graphite Powder 99 surface is 9-80/μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101727652A CN101850964B (en) | 2009-11-27 | 2009-11-27 | Spherical graphite with median diameter of 17 to 30 mu m and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101727652A CN101850964B (en) | 2009-11-27 | 2009-11-27 | Spherical graphite with median diameter of 17 to 30 mu m and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101850964A true CN101850964A (en) | 2010-10-06 |
| CN101850964B CN101850964B (en) | 2013-01-30 |
Family
ID=42802681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101727652A Active CN101850964B (en) | 2009-11-27 | 2009-11-27 | Spherical graphite with median diameter of 17 to 30 mu m and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101850964B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439750A (en) * | 2020-04-09 | 2020-07-24 | 营口博田材料科技有限公司 | Preparation and purification method of high-purity graphite |
| CN113600322A (en) * | 2021-08-03 | 2021-11-05 | 萝北奥星新材料有限公司 | Machine adjusting method for preparing lithium battery negative electrode material precursor-spheroidized graphite |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365852C (en) * | 2004-01-21 | 2008-01-30 | 洛阳市冠奇工贸有限责任公司 | Graphite powder for negative electrode of lithium ion secondary cell and manufacturing method thereof |
| CN101582503A (en) * | 2008-05-14 | 2009-11-18 | 天津市铁诚电池材料有限公司 | Negative electrode material of lithium ion battery with graphite covered by asphalt and preparation method thereof |
| CN101850963B (en) * | 2009-11-27 | 2012-02-08 | 洛阳市冠奇工贸有限责任公司 | Spherical graphite with median diameter of 3 to 10 mu m and preparation method thereof |
-
2009
- 2009-11-27 CN CN2009101727652A patent/CN101850964B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439750A (en) * | 2020-04-09 | 2020-07-24 | 营口博田材料科技有限公司 | Preparation and purification method of high-purity graphite |
| CN111439750B (en) * | 2020-04-09 | 2021-11-09 | 营口博田材料科技有限公司 | Preparation and purification method of high-purity graphite |
| CN113600322A (en) * | 2021-08-03 | 2021-11-05 | 萝北奥星新材料有限公司 | Machine adjusting method for preparing lithium battery negative electrode material precursor-spheroidized graphite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101850964B (en) | 2013-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022062677A1 (en) | Ternary single crystal positive electrode material, preparation method therefor and application thereof | |
| CN100457339C (en) | Continuous production apparatus for nano metal powder | |
| CN104617269B (en) | A kind of silicon alloy composite negative pole material, preparation method and lithium ion battery | |
| CN104609400B (en) | A kind of composite graphite negative electrode material and preparation method thereof | |
| CN101850963B (en) | Spherical graphite with median diameter of 3 to 10 mu m and preparation method thereof | |
| CN103618074B (en) | Silicon-carbon composite cathode material of lithium ion battery and preparation method thereof | |
| CN111533184B (en) | Preparation method of phosphorus-doped lithium nickel cobalt ferrite | |
| CN106207142A (en) | A kind of power lithium-ion battery silicon-carbon composite cathode material preparation method | |
| CN111916735B (en) | Amorphous carbon material, preparation method thereof and lithium ion battery | |
| CN113247964B (en) | Preparation method of high-rate, high-compaction and high-voltage lithium cobalt oxide positive electrode material | |
| CN101850965A (en) | Spherical graphite with median diameter of 11 to 16 mu m and preparation method thereof | |
| CN109167028A (en) | A kind of regenerative preparation of lithium iron phosphate/carbon composite material | |
| CN103311517A (en) | TiO2-coated graphite composite particle for lithium ion battery, and preparation method and application thereof | |
| CN104752692B (en) | A kind of preparation method of ferrous phosphate lithium/carbon composite positive pole | |
| CN112018366A (en) | Graphite negative electrode material of lithium ion battery and preparation method thereof | |
| CN101850964B (en) | Spherical graphite with median diameter of 17 to 30 mu m and preparation method thereof | |
| AU2021105816A4 (en) | A Reclaiming Method For Cathode Materials Of Retired Lithium-Ion Batteries | |
| CN113265533B (en) | Roasting system and method for efficiently utilizing biomass | |
| CN114105155A (en) | Preparation method of composite sodium-ion battery material | |
| CN111747416A (en) | Production of SiOxApparatus and method of | |
| CN101850966B (en) | Spherical graphite with median diameter of 6 to 14 mu m and preparation method thereof | |
| CN102593440A (en) | Cathode materials for lithium ion battery and producing method thereof | |
| CN209397246U (en) | A kind of system of wet type enrichment titanium material | |
| CN102942939B (en) | Dry quenching device adopting cyclone dust collector as dust one-step collector | |
| CN115133002B (en) | Sodium battery positive electrode material, and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |