CN201753265U - Spherical graphite producing device - Google Patents
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- CN201753265U CN201753265U CN2010202907398U CN201020290739U CN201753265U CN 201753265 U CN201753265 U CN 201753265U CN 2010202907398 U CN2010202907398 U CN 2010202907398U CN 201020290739 U CN201020290739 U CN 201020290739U CN 201753265 U CN201753265 U CN 201753265U
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Abstract
The utility model relates to an improved structure of a spherical graphite producing device which comprises at least one smashing device (1) equipped with a discharging opening, at least one smashing device (2) equipped with a discharging opening and at least one smashing device (3) equipped with a discharging opening. The utility model further comprises a blower (1), a blower (2) and a blower (3) which are respectively connected with the smashing device (1), the smashing device (2) and the smashing device (3). The blowers are roots blowers. The utility model, by adopting the roots blowers, has the following advantages of accelerated material flow velocity, uniform material particle motion speed, reduced grinding time, raised recovery rate, decreased specific surface area and internal resistance, minimized first irreversible capacity loss and significantly lowered cost due to the decreased processing frequency. Furthermore, the utility model realized the automation of the producing process, reduces the maintenance fees and the labor fees, enhances the efficiency and lowers the total cost of the products.
Description
Technical field
The utility model relates to a kind of graphite production equipment, especially relates to a kind of structural improvement to the spherical graphite production equipment.
Background technology
Along with the develop rapidly of economic globalization, the continuous increase of oil crisis and population becomes increasingly conspicuous the contradiction of shortage of resources, and particularly in today that people more and more pay attention to environment protection, green power supply has obtained development at full speed.Lithium ion battery has been exactly the secondary cell of new generation after nickel metal hydride battery since the sixties in last century.In recent ten years, along with the widespread use and the fast development of various portable electric appts and electromobile, lithium ion battery is with its high reversible capacity, high-voltage, high-energy-density, high cyclical stability has extended cycle life, and self-discharge is little, memory-less effect, the performance of excellences such as non-environmental-pollution doubly is popular, and is called as green energy resource and the leading power supply of 21 century, has civilian widely and the national defense applications prospect.The research and development of lithium ion battery negative material is also become the emphasis and the focus of R﹠D institution's research and development.
Replace synthetic graphite to be used for lithium cell negative pole material with natural spherical plumbago at present and improved energy density and cycle life, but in the synthetic graphite of complete natural graphite of graphite crystal growth and the greying preparation by coke etc., interlayer bonding force on crystalline c direction of principal axis is lower than the bonding force on the crystal basal plane orientation, therefore be easy to form platy shaped particle in the crushing process when powder preparing with big length-to-diameter ratio, form in the roll-in process of platy shaped particle when electrode preparation and be parallel to aligning of collector, lithium ion enters and deviates from graphite crystal and causes that the c direction of principal axis of graphite produces big strain when inner in the repeated charge process, cause electrode structure to destroy, influenced cycle performance, and the result that exfoliated graphite particles aligns also can cause lithium ion to enter from the side of graphite crystal and the resistance deviate from strengthens, the fast charging and discharging performance variation. in addition, since spherical graphite in the production preparation process by 30-60 all over time grinding and up to ten thousand time collision and cutting friction many times, its powder inside exists a large amount of nano levels and the minuteness particle of inferior nano-graphite, and its specific surface area is increased; The graphite crystal of platy shaped particle has bigger specific surface area with spherical comparing with the blocky graphite particle, therefore the spherical graphite as the negative material of lithium ion battery has bigger irreversible capacity in the first charge-discharge process, and the associativity of graphite minuteness particle and current collector is relatively poor, need to add a large amount of tackiness agents, increased the internal resistance of cell, reduced loading capacity, fast charging and discharging performance and cycle performance worsen.Therefore, wish a kind of new negative material of development or improve this spheroidal graphite materials that its specific surface area is diminished, and irreversible capacity loss reduces first, internal resistance reduces, and fast charging and discharging performance is excellent more.
Operate with the on-line mode that generally adopts in present centrifugal blower and the existing industry, because of the little material of its blast can be subjected to elbow with the wind in flow process, grating disk, influence with the resistance of classifying turbine, make the material flow heterogeneity, part material lagging is in pipeline or the crushiing chamber bottom, can cause following result like this: 1. material shaping process time prolongs, the material collision, cutting, the friction number of times is multiplied, and material is inner owing to the cutting collision produces a large amount of nano levels or Subnano-class graphite minuteness particle, and material specific surface area is increased.2. because Flow of Goods and Materials speed is inhomogeneous, and the graphite granule forming degree is also inhomogeneous, will produce the platy shaped particle or the bar-shaped irregular particle of big L/D ratio, cause its irreversible capacity and internal resistance increase first.3. producing preparation has like this increased pulverizing training time and time number of times, and yield is descended, and current consumption increases; Material accumulates in the crushiing chamber bottom raises the bottom organism temperature, in the work-ing life of having reduced the SKF bearing, production cost is significantly improved.
The utility model content
The utility model mainly is to solve existing in prior technology material shaping process time to prolong, the material collision, cutting, the friction number of times is multiplied, material is inner owing to the cutting collision produces a large amount of nano levels or Subnano-class graphite minuteness particle, material specific surface area is increased, and because Flow of Goods and Materials speed is inhomogeneous, the graphite granule forming degree is also inhomogeneous, will produce the platy shaped particle or the bar-shaped irregular particle of big L/D ratio, cause its technical problem of irreversible capacity and internal resistance increase etc. first; A kind of roots blower that adopted is provided, and material flow is accelerated, and the material particles movement velocity is even, milling time shortens, and yield improves, and its specific surface area and internal resistance reduce, irreversible capacity loss reduces first, the spherical graphite production equipment that the few cost of its processing number of times also declines to a great extent.
It is to solve existing in prior technology production preparation to have increased the pulverizing training time and all over number of times, yield has been descended that the utility model also has a purpose, and current consumption increases; Material accumulates in the crushiing chamber bottom raises the bottom organism temperature, the work-ing life of having reduced the SKF bearing, the technical problem that production cost is significantly improved etc.; A kind of automatization in the production process that realized is provided, has reduced maintenance cost and labour cost, improved efficient, the spherical graphite production equipment that the total cost of its product reduces.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of spherical graphite production equipment, comprise that at least one of being connected successively is provided with the shredding unit one of discharge port one and opening for feed one, at least one shredding unit two that is provided with discharge port two and opening for feed two and at least one shredding unit three that is provided with discharge port three and opening for feed three, it is characterized in that, it also comprises at least three gas blower one, gas blower two and the gas blowers three that link to each other respectively with described shredding unit one, shredding unit two and shredding unit three respectively, and described gas blower is a Root's blower.
At above-mentioned spherical graphite production equipment, described Root's blower adopts two leaves or three leaf root's blowers, and its rotating speed is 730～1450r/min, and air quantity is 13.7-50.96m3/min, and power of motor is 5.5-55KW.
At above-mentioned spherical graphite production equipment, described shredding unit one comprises at least one ACM-60 pulverizer that includes main frame one, above-mentioned discharge port one and opening for feed one are arranged on the main frame one, this shredding unit one also comprise be connected successively and be respectively arranged with opening for feed and discharge port cyclonic separator one and fly-ash separator one, described fly-ash separator one links to each other with above-mentioned gas blower one, and described cyclonic separator one is connected with described ACM-60 pulverizer.
At above-mentioned spherical graphite production equipment, described shredding unit two adopts at least one ACM-50 pulverizer that includes main frame two, above-mentioned discharge port two and opening for feed two are arranged on the main frame two, this shredding unit two also comprises outer grading machine one, cyclonic separator two and the fly-ash separator two that is connected successively and be respectively arranged with opening for feed and discharge port, described fly-ash separator two links to each other with above-mentioned gas blower two, and described outer grading machine one is connected with described ACM-50 pulverizer main frame.
At above-mentioned spherical graphite production equipment, described shredding unit three adopts at least one ACM-30 pulverizer that includes main frame three, above-mentioned discharge port three and opening for feed three are put on main frame three, this shredding unit three also comprises outer grading machine two, cyclonic separator three and the fly-ash separator three that is connected successively and be respectively arranged with opening for feed and discharge port, described fly-ash separator three links to each other with above-mentioned gas blower three, and described outer grading machine two is connected with described ACM-30 pulverizer main frame.
At above-mentioned spherical graphite production equipment, described shredding unit one comprises 4 ACM-60 pulverizers that are connected successively, adopts opening for feed one to be connected in series mutually with the discharge port of cyclonic separator one between the adjacent ACM-60 pulverizer.
At above-mentioned spherical graphite production equipment, described shredding unit two comprises 6 ACM-50 pulverizers that are connected successively, adopts discharge port two to be connected in series mutually with outer grading machine one between the adjacent ACM-50 pulverizer.
At above-mentioned spherical graphite production equipment, described shredding unit three comprises 8 ACM-30 pulverizers that are connected successively, adopts discharge port three to be connected in series with outer grading machine two-phase between the adjacent ACM-30 pulverizer.
At above-mentioned spherical graphite production equipment, described ACM-30 pulverizer is provided with the rotor abrading block, circular arc body 1 and circular arc body 23 that described rotor abrading block 4 comprises a cylinder 1 and is separately positioned on cylinder 1 corresponding both sides, be axially arranged with the through hole 1 and the through hole 26 that communicate in the described rotor abrading block 4, described rotor abrading block 4 bottom periphery are along circumferentially also offering circular groove 7.
Therefore, the utlity model has following advantage: 1.Adopted roots blower, material flow is accelerated, and the material particles movement velocity is even, and milling time shortens, and yield improves, and its specific surface area and internal resistance reduce, and irreversible capacity loss reduces first, and the few cost of its processing number of times also declines to a great extent; 2.Realized the automatization in the production process, reduced maintenance cost and labour cost, improved efficient, the total cost of its product reduces.
Description of drawings
Fig. 1 is a structure principle chart of the present utility model.
Fig. 2 is the rotor master TV structure synoptic diagram of ACM-30 pulverizer in the utility model.
Fig. 3 is the sectional structure synoptic diagram along A-A line among Fig. 2.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.Among the figure, cylinder 1, circular arc body 1, circular arc body 23, rotor abrading block 4, through hole 1, through hole 26, circular groove 7.
Embodiment:
A kind of spherical graphite production equipment, comprise at least one the shredding unit one that is provided with discharge port one and opening for feed one that is connected successively, at least one shredding unit two and at least one shredding unit three that is provided with discharge port three and opening for feed three that is provided with discharge port two and opening for feed two, it also comprise at least three respectively with described shredding unit one, the gas blower one that shredding unit two and shredding unit three powder link to each other, gas blower two and gas blower three, gas blower is a Root's blower, Root's blower adopts two leaves or three leaf root's blowers, its rotating speed is 730～1450r/min, air quantity is 13.7-50.96m3/min, and power of motor is 5.5-55KW.
Shredding unit one comprises at least one ACM-60 pulverizer that includes main frame one, above-mentioned discharge port one and opening for feed one are arranged on the main frame one, this shredding unit one also comprise be connected successively and be respectively arranged with opening for feed and discharge port cyclonic separator one and fly-ash separator one, fly-ash separator one links to each other with above-mentioned gas blower one, and cyclonic separator one is connected with described ACM-60 pulverizer.
Shredding unit two adopts at least one ACM-50 pulverizer that includes main frame two, above-mentioned discharge port two and opening for feed two are arranged on the main frame two, this shredding unit two also comprises outer grading machine one, cyclonic separator two and the fly-ash separator two that is connected successively and be respectively arranged with opening for feed and discharge port, fly-ash separator two links to each other with above-mentioned gas blower two, and outer grading machine one is connected with described ACM-50 pulverizer main frame.
Shredding unit three adopts at least one ACM-30 pulverizer that includes main frame three, above-mentioned discharge port three and opening for feed three are on main frame three, this shredding unit three also comprises outer grading machine two, cyclonic separator three and the fly-ash separator three that is connected successively and be respectively arranged with opening for feed and discharge port, fly-ash separator three links to each other with above-mentioned gas blower three, and outer grading machine two is connected with described ACM-30 pulverizer main frame.
In the present embodiment, shredding unit one comprises 4 ACM-60 pulverizers that are connected successively, adopt cyclonic separator one to be connected in series mutually between the adjacent ACM-60 pulverizer with the ACM-60 pulverizer, promptly the discharge port of the main frame of first ACM-60 pulverizer links to each other with first cyclonic separator one opening for feed, the opening for feed of the main frame of second ACM-60 pulverizer of first cyclonic separator one discharge port links to each other, and the like.
In the present embodiment, shredding unit two comprises 6 ACM-50 pulverizers that are connected successively, adopt discharge port two to be connected in series mutually between the adjacent ACM-50 pulverizer with outer grading machine one, promptly the discharge port of the main frame of first ACM-50 pulverizer links to each other with first outer grading machine one, the opening for feed of the main frame of second ACM-50 pulverizer links to each other with first outer grading machine one, the discharge port of second ACM-50 pulverizer main frame links to each other with second outer grading machine one, and the like.
In the present embodiment, shredding unit three comprises 8 ACM-30 pulverizers that are connected successively, adopt discharge port three to be connected in series between the adjacent ACM-30 pulverizer with outer grading machine two-phase, promptly the discharge port three of the main frame of first ACM-30 pulverizer links to each other with first outer grading machine two, the opening for feed three of the main frame of second ACM-30 pulverizer links to each other with first outer grading machine two, the discharge port three of second ACM-30 pulverizer main frame links to each other with second outer grading machine two, and the like.
Mode of connection between shredding unit one, shredding unit two and the shredding unit three is as follows: promptly the discharge port of last cyclonic separator one of shredding unit one links to each other with the opening for feed of the main frame of first ACM-50 pulverizer of shredding unit two, and the outer grading machine one of last of shredding unit two links to each other with the opening for feed of the main frame of first ACM-30 pulverizer of shredding unit three.It should be noted that, every ACM-60 pulverizer, ACM-50 pulverizer and ACM-30 pulverizer are provided with gas blower one, gas blower two and the gas blower three that cooperates with it, have promptly adopted 4 gas blowers one, 6 gas blowers two and 8 gas blowers three in the present embodiment altogether.
In the present embodiment, discharge port institute's output object of the fly-ash separator one in the shredding unit one and cyclonic separator two and the fly-ash separator two in the shredding unit two, and the cyclonic separator in the shredding unit three three and three output objects of fly-ash separator are the final product in the present embodiment, and the output object of the cyclonic separator one in the shredding unit one and outer grading machine one in the shredding unit two and the outer grading machine two in the shredding unit three is for being the intermediate product of embodiment originally.
In the present embodiment, the rotor abrading block 4 of two the ACM-30 pulverizers circular arc body 1 and the circular arc body 23 that comprise a cylinder 1 and be separately positioned on cylinder 1 corresponding both sides wherein, be axially arranged with the through hole 1 and the through hole 26 that communicate in the rotor 1, rotor 1 bottom periphery is along circumferentially also offering circular groove 7, it is the round grinding block rotor, the rotor of other two ACM-30 pulverizers adopts square abrading block rotor commonly used at present, using method is first ACM-30 pulverizer with square abrading block rotor, second ACM-30 pulverizer round grinding block rotor, the 3rd ACM-30 pulverizer uses with the such cross arrangement of round grinding block rotor with square abrading block rotor, the 4th ACM-30 pulverizer.
In the present embodiment, the unique texture of outside air blast because its fan blade of roots blower is meshing with each other, blast is big and air quantity is little in its use, the motor blast of its supporting 18KW can reach 19.6KPa, be three times of centrifugal blower of the same type, like this fan outlet wind-force be obstructed or elbow increases and platform cover between mutual when online the air quantity and the blast of its air intake unaffected, material flow velocity in equipment pipe is even, its high-speed friction collision in the crushing chamber of equipment, the sphericity homogeneous that forms, stopped the generation of the platy shaped particle of big L/D ratio. next second feature using roots blower is that the blast height 2-3 of common centrifugal blower (be doubly) makes material flow fast, when the shaping of main pulverizing shaping chamber, collision friction and cutting number of times are multiplied in its unit time, the material forming speed has improved 2-3 doubly so at one time, time that its shaping process is finished and processing have also been shortened half all over number of times, having improved output and production efficiency in the unit time. the 3rd feature is perfectly to have realized on-line automation production with roots blower, so-called online first discharge port that typically refers to first equipment is connected with the blast inlet of second equipment, the discharge port of second equipment is connected with the 3rd blast inlet, the rest may be inferred until at last, so just can add raw material at first, in the end one is connected into the product material, pilot process does not need the people to operate, realize producing automatically. and operate with the on-line mode that generally adopts in present centrifugal blower and the existing industry, because of the little material of its blast can be subjected to elbow with the wind in flow process, grating disk, influence with the resistance of classifying turbine, make the material flow heterogeneity, part material lagging is in pipeline or the crushiing chamber bottom, can cause following result like this: 1. material shaping process time prolongs, the material collision, cutting, the friction number of times is multiplied, material is inner owing to the cutting collision produces a large amount of nano levels or Subnano-class graphite minuteness particle, material specific surface area is increased. 2. because Flow of Goods and Materials speed is inhomogeneous, the graphite granule forming degree is also inhomogeneous, will produce the platy shaped particle or the bar-shaped irregular particle of big L/D ratio, cause its irreversible capacity and internal resistance increase first. 3. producing preparation has like this increased pulverizing training time and time number of times, yield is descended, and current consumption increases; Material accumulates in the crushiing chamber bottom raises the bottom organism temperature, in the work-ing life of having reduced the SKF bearing, production cost is significantly improved.
The connecting method of announcing in the utility model is characterized in that: 1. adopted roots blower, material flow is accelerated, the material particles movement velocity is even, milling time shortens, yield improves, its specific surface area and internal resistance reduce, irreversible capacity loss reduces first, the few cost of its processing number of times also declines to a great extent. 2. online employing novel method: earlier with waist Rotate 180 degree in the main frame of second machine, discharge port with first machine is connected with the opening for feed (but not blast inlet) of second machine again, the rest may be inferred is connected to last always. coincide machine design person's thought of this method, overcome owing to the drag effects that is subjected to grating disk and main branch impeller and elbow makes the defective of material lagging in the crushiing chamber bottom, having changed, the structure of Device Host is rationalized online more being tending towards.
It is higher that the product that the disclosed production method of the utility model is produced has safety performance, specific surface area is littler, irreversible capacity loss reduces first, charge-discharge performance and cycle performance be feature such as excellence more. and at first adopt roots blower to replace centrifugal fan that its blast is increased, material is subjected to its active raising of wind pressure effect at machine intimate and pipeline internal cause, material is indoor more with the number of times that piece shape rotor contacts with stator in the pulverizing nodularization in unit time, be under the similarity condition, graphite granule in crushiing chamber through the collision, friction, the number of times of shapings such as cutting is more, the time that material is shaped is short, speed is fast, become the negative material of excellent performance after classified, its pulverizing, significantly reducing of shaping all over number of times, only need 15-20 time, formerly being lower than original 30-60 time. power consumption reduces, cost declines to a great extent, main is its pulverizing, reducing of shaping all over number of times, nano level that is produced in the production process and Subnano-class graphite particle also significantly reduce, the irregularly shaped Subnano-class graphite particle of staying in the negative material after finally classified is few, and the specific surface area of product reduces because of the graphite particle that it has relatively still less, specific storage increases. and next adopts the online mode of forward, realizes the automatization of production process; Material in the processing and preparing process without manual operation, stopped the people for sneaking into impurity, the pipeline forward is online has simultaneously changed the interior traditional operating method of industry with increasing blast, make material in flow process, can not make partial material be trapped in the crushiing chamber bottom because of the increase of elbow and resistance, activity and the velocity of flow homogeneous of graphite granule in the balling machine of pipeline, its sphericity that is shaped the back material particles reaches unanimity, sheet in the material and irregular particle such as bar-shaped significantly reduce, therefore the compacted density of material also improves relatively, the probability that formation has the platy shaped particle of big length-to-diameter ratio reduces, cycle performance is relative with fast charging and discharging performance to be improved. and the 3rd is to adopt cylindrical abrading block to make ball, shaping in ACM30 machine described in claims 7 of the present utility model.Such method makes the production of spherical graphite more be tending towards rationalizing, and its sphericity of graphite microballoon of being produced is better, and specific surface area is little, and its specific storage is also higher.Under 10,000～20,000 times scanning electron microscope, observe the level and smooth and rare scraggly pitting of its graphite microsphere surface.Fragment in its graphite is also relative with irregular particle less; And adopt all is that other old its profile of producer rule its sphericity under the high power scanning electron microscope of square abrading block is relatively poor, and most graphite microsphere surfaces all have scraggly hole to cheat and the crack, and more fragment is arranged.Relatively poor with its chemical property of negative material that this spherical graphite processes, specific storage is low, and irreversible capacity is then higher.The 3rd is to adopt centralized and unified collecting dust-removing powder in preparation method disclosed in the utility model, with the negative pressure of roots blower dust-removing powder is guided in the fly-ash separator and to be collected in together by the fly-ash separator feed opening, do like this concentration of the dust granules in the workshop air is reduced significantly, the quantity that the dust-removing powder particle flies in the spherical graphite material naturally reduces, submicron order in the spherical graphite material is with nano level graphite particle so and relative minimizing also makes charge-discharge performance and cycle performance better.
The production method of the disclosed spherical graphite of the utility model patent second purification process that process is a spherical graphite wherein, promptly improving its carbon content and be the process more than 99.98%. the wherein employed conversion unit of the method for purification that the utility model adopted is the polyethylene retort, have basic different with carbon steel liner tetrafluoroethylene reactor that conventional production methods is adopted: 1. carbon steel reactor maximum volume is 1500 liters, and once feeding quantity are 800 kilograms at most; And polypropylene retort volume maximum can reach 6 cubic metres, and one time feeding quantity can reach at most more than 1.8 tons, and output is doubled many in its unit time; 2. the carbon steel reactor with electrically heated rod with the heat-conducting oil heating in the reactor interlayer, thermal oil conducts heat to materials inside the materials inside temperature is raise, its heat-conducting efficiency is lower, generally have only 50%, heat in the polypropylene retort material and adopt steam directly to feed in the utility model production method, its thermo-efficiency can reach more than 90%. and its mixing of materials uniform method of 3. traditional carbon steel reactor is to rotate with the 7.5KW driven by motor with carbon steel mechanical stirring outer lining tetrafluoroethylene layer; And in the disclosed production method of the utility model the high pressure gas of compressor are directly fed be used in the material mixing of materials even, its mode is that the upper and lower of high pressure gas from retort fed simultaneously, the top high pressure gas are blown into from sidepiece material are rotated along tank skin, lower gas directly is blown into from the retort feed opening and makes material be in the boiling state material in beginning in reaction process to mix under this kind state. and compare this kind method maintenance cost with traditional mode of production low, not electricity consumption, it is with low cost, and is simple to operate.
Purification Workshop Production proportioning adopts HF and HCL to remove impurity and silicon-dioxide in the spherical graphite in first pass in the utility model, and the carbon amount is reached more than 99.9%; Adopt HCL and HNO3 by 1～6 in second time: produce the content of deleterious metallic element and non-metallic element can be reduced to the target zone of customer requirement at 3～18 or 6～18: 2～6, with the production method fundamental difference of using always at present be without H2SO4 in second time.Because the CaSO4 that the compound of Ca and sulfate radical generate is slightly soluble in water, therefore in second time production process, reacts the material of being produced that is slightly soluble in water and in the centrifuge washing process, can not remove fully with H2SO4; And AL3+ is the form existence of aluminic acid (H3ALO3) in acidic solution, and it is water insoluble; The state of matter that is aluminium hydroxide [AL (OH) 3] in basic solution exists, and is also water insoluble, therefore just is difficult to the two is removed by centrifuge washing, and this also is to produce and major cause that AL and Ca often exceed standard with H2SO4.And the method for being announced in employing the utility model to use the nitrate that HNO3 generated in second time all be water-soluble, be removed by centrifuge washing.The requirement that all can touch the mark of its various constituent contents.
The utility model discloses a kind of lithium cell negative pole material production method with spherical graphite, may further comprise the steps: one: the crystalline flake graphite input sieve apparatus that will-100 order carbon amounts be 90-99% is crossed 80 eye mesh screens; Two: will sieve the back Graphite Powder 99 and add the ACM-60 machine through coarse crushing, granularity D50 is crushed to target value, enters the ACM50 machine successively along pipeline again and carries out attritioning, and ACM30 carries out shaping system ball, final size, and sphericity, tap density are all within target range; Three: with spherical graphite powder qualified between crushing vehicle according to the above ratio with mixing acid retort internal reaction 10-15 hour, the dehydration washing enters baking operation afterwards again to neutral again.
The mixing acid of being mentioned in the utility model is hydrochloric acid, the acid solution that sulfuric acid, hydrofluoric acid mix according to the above ratio, and institute uses acid and is technical grade commonly used.
The utility model compared with prior art has two big advantages: the one, realized the automatization in the production process by scrap build, and reduced maintenance cost and labour cost, improved efficient, the total cost of its product reduces.The 2nd, its sphericity of spherical graphite produced by above two big processes with the utility model and particulate orientation are than good (seeing description of drawings), harmful element content low (seeing the accompanying drawing table) as Fe, AL, Cu, Ca etc., coat and be used for negative material after its chemical property good, have less irreversible capacity loss first because of its good sphericity fragment is few, and fast charging and discharging performance and cycle performance excellence.Its first reversible capacity reach 350mAh/g, the 500 all capability retentions that circulate are greater than 80%.
Concrete using method:
(1)
With specification is that-100 order carbon amounts are 95% first 80 eye mesh screens of crossing of crystalline flake graphite, enter again and carry out coarse breaking in 60 machines, particle size after cracking is the D50=target value, enter 50 machine systems along pipeline again and carry out attritioning, the 30 machine systems that enter at last are to particulate surface shaping and nodularization, and final particulate tap density all enters purification process down with specific surface area and granularity in target range.Material and water and mixing acid are added in the reactor in above-mentioned ratio, add oxygenant, reaction is 15 hours under certain temperature and pressure, centrifuge washing is dried again, obtains highly purified spherical graphite, recording its carbon content by the GB/T3521-95 method is 99.985%, and ash is less than 0.05%; Adopt the laser particle size distribution instrument to obtain its D10, D50, the D90 value all in target range, adopts the test of BET method, and specific surface area is 4～7m
2/ g, the tap density that adopts Quantachrome AutoTap tap density instrument to record powder is 0.9～1.04g/ml.Test its micro-index such as following table with Plasma1000 type ICP-AES:
SG18um spherical graphite constant current charge-discharge data such as the following table produced with square abrading block:
SG18um spherical graphite constant current charge-discharge data such as the following table produced with the part circular abrading block
(2)
With specification is that 325 order carbon amounts are 90% first 100 eye mesh screens of crossing of crystalline flake graphite, enter again and carry out coarse breaking in 60 machines, particle size after cracking is the D50=target value, enter 50 machine systems along pipeline again and carry out attritioning, the 30 machine systems that enter at last are to particulate surface shaping and nodularization, and final particulate tap density all enters purification process down with specific surface area and granularity in target range.Material and water and mixing acid are added in the reactor in above-mentioned ratio, add oxygenant, reaction is 20 hours under certain temperature and pressure, centrifuge washing is dried again, obtains highly purified spherical graphite, record its carbon content greater than 99.95% by the GB/T3521-95 method, ash is less than 0.05%; Adopt the laser particle size distribution instrument to obtain its D10, D50, the D90 value all in target range, adopts the test of BET method, and specific surface area is 4～7m
2/ g, the tap density that adopts Quantachrome AutoTap tap density instrument to record powder is 0.9～1.04g/ml.Test its micro-index such as following table with Plasma1000 type ICP-AES:
(3)
With specification is that-100 order carbon amounts are 96% first 100 eye mesh screens of crossing of crystalline flake graphite, enter again and carry out coarse breaking in 60 machines, particle size after cracking is the D50=target value, enter 50 machine systems along pipeline again and carry out attritioning, the 30 machine systems that enter at last are to particulate surface shaping and nodularization, and final particulate tap density all enters purification process down with specific surface area and granularity in target range.1.2 tons of materials and 700 kg of water are added in the reactor, add 180 kilograms in hydrofluoric acid in proportion successively, 360 kilograms of hydrochloric acid add 50 kilograms in nitric acid, and reaction is 9 hours under the 80-110 temperature, again centrifuge washing; After the washing wet feed is dropped in the retort once more, add 600 kilograms of pure water, add 200 kilograms of sulfuric acid again, reaction 2.5 hours, after blowing washing again, obtain highly purified spherical graphite, record its carbon content greater than 99.98% by the GB/T3521-95 method, ash is less than 0.02%; Adopt the laser particle size distribution instrument to obtain its D10, D50, the D90 value all in target range, adopts the test of BET method, and specific surface area is 4～7m
2/ g, the tap density that adopts Quantachrome AutoTap tap density instrument to record powder is 0.9～1.04g/ml.Test its micro-index such as following table with Plasma1000 type ICP-AES:
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as cylinder 1, circular arc body 1, circular arc body 23, rotor abrading block 4, through hole 1, through hole 26, circular groove 7 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (9)
1. spherical graphite production equipment, comprise that at least one of being connected successively is provided with the shredding unit one of discharge port one and opening for feed one, at least one shredding unit two that is provided with discharge port two and opening for feed two and at least one shredding unit three that is provided with discharge port three and opening for feed three, it is characterized in that, it also comprises at least three gas blower one, gas blower two and the gas blowers three that link to each other with described shredding unit one, shredding unit two and shredding unit three powder respectively, and described gas blower is a Root's blower.
2. according to the right 1 described spherical graphite production equipment of making demands, it is characterized in that described Root's blower adopts two leaves or three leaf root's blowers, its rotating speed is 730～1450r/min, air quantity is 13.7-50.96m3/min, and power of motor is 5.5-55KW.
3. according to the right 2 described spherical graphite production equipments of making demands, it is characterized in that, described shredding unit one comprises at least one ACM-60 pulverizer that includes main frame one, above-mentioned discharge port one and opening for feed one are arranged on the main frame one, this shredding unit one also comprise be connected successively and be respectively arranged with opening for feed and discharge port cyclonic separator one and fly-ash separator one, described fly-ash separator one links to each other with above-mentioned gas blower one, and described cyclonic separator one is connected with described ACM-60 pulverizer.
4. according to the right 2 described spherical graphite production equipments of making demands, it is characterized in that, described shredding unit two adopts at least one ACM-50 pulverizer that includes main frame two, above-mentioned discharge port two and opening for feed two are arranged on the main frame two, this shredding unit two also comprises outer grading machine one, cyclonic separator two and the fly-ash separator two that is connected successively and be respectively arranged with opening for feed and discharge port, described fly-ash separator two links to each other with above-mentioned gas blower two, and described outer grading machine one is connected with described ACM-50 pulverizer.
5. according to the right 2 described spherical graphite production equipments of making demands, it is characterized in that, described shredding unit three adopts at least one ACM-30 pulverizer that includes main frame three, above-mentioned discharge port three and opening for feed three are put on main frame three, this shredding unit three also comprises outer grading machine two, cyclonic separator three and the fly-ash separator three that is connected successively and be respectively arranged with opening for feed and discharge port, described fly-ash separator three links to each other with above-mentioned gas blower three, and described outer grading machine two is connected with described ACM-30 pulverizer.
6. according to the right 3 described spherical graphite production equipments of making demands, it is characterized in that, described shredding unit one comprises 4 ACM-60 pulverizers that are connected successively, adopts opening for feed one to be connected in series mutually with the discharge port of cyclonic separator one between the adjacent ACM-60 pulverizer.
7. according to the right 4 described spherical graphite production equipments of making demands, it is characterized in that described shredding unit two comprises 6 ACM-50 pulverizers that are connected successively, adopt discharge port two to be connected in series mutually between the adjacent ACM-50 pulverizer with outer grading machine one.
8. according to the right 5 described spherical graphite production equipments of making demands, it is characterized in that described shredding unit three comprises 8 ACM-30 pulverizers that are connected successively, adopt discharge port two to be connected in series between the adjacent ACM-30 pulverizer with outer grading machine two-phase.
9. according to the right 7 described spherical graphite production equipments of making demands, it is characterized in that, described ACM-30 pulverizer is provided with the rotor abrading block, circular arc body one (2) and circular arc body two (3) that described rotor abrading block (4) comprises a cylinder (1) and is separately positioned on the corresponding both sides of cylinder (1), be axially arranged with the through hole one (5) and the through hole two (6) that communicate in the described rotor abrading block (4), described rotor abrading block (4) bottom periphery is along circumferentially also offering circular groove (7).
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| CN2010202907398U CN201753265U (en) | 2010-08-11 | 2010-08-11 | Spherical graphite producing device |
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| CN2010202907398U CN201753265U (en) | 2010-08-11 | 2010-08-11 | Spherical graphite producing device |
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| CN103537357A (en) * | 2013-11-06 | 2014-01-29 | 宁夏新航能源环境科技有限公司 | Energy-saving type smash grading device |
| CN104071775A (en) * | 2014-04-09 | 2014-10-01 | 岳梁彩 | Graphite shaping machine |
| CN107555427A (en) * | 2017-10-31 | 2018-01-09 | 湖南国盛石墨科技有限公司 | A kind of spheroidization micro crystal graphite production system |
| WO2018119656A1 (en) * | 2016-12-27 | 2018-07-05 | 深圳市玖创科技有限公司 | Graphite pulverization device for negative electrode material of portable lithium battery |
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| CN111825089A (en) * | 2020-07-09 | 2020-10-27 | 黑龙江省宝泉岭农垦溢祥新能源材料有限公司 | Spherical graphite tailing cyclic processing system and method |
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| CN103537357A (en) * | 2013-11-06 | 2014-01-29 | 宁夏新航能源环境科技有限公司 | Energy-saving type smash grading device |
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| CN104071775B (en) * | 2014-04-09 | 2017-11-14 | 岳梁彩 | A kind of graphite trimmer |
| WO2018119656A1 (en) * | 2016-12-27 | 2018-07-05 | 深圳市玖创科技有限公司 | Graphite pulverization device for negative electrode material of portable lithium battery |
| WO2018119653A1 (en) * | 2016-12-27 | 2018-07-05 | 深圳市玖创科技有限公司 | Two-stage pulverization device for negative electrode material of lithium-ion battery |
| CN107555427A (en) * | 2017-10-31 | 2018-01-09 | 湖南国盛石墨科技有限公司 | A kind of spheroidization micro crystal graphite production system |
| CN111054508A (en) * | 2019-12-20 | 2020-04-24 | 黑龙江省宝泉岭农垦溢祥新能源材料有限公司 | Process for processing fine-particle high-tap spherical graphite |
| CN111825089A (en) * | 2020-07-09 | 2020-10-27 | 黑龙江省宝泉岭农垦溢祥新能源材料有限公司 | Spherical graphite tailing cyclic processing system and method |
| 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 |
| CN115364985A (en) * | 2022-08-31 | 2022-11-22 | 浙江碳一新能源有限责任公司 | Method for preparing spherical graphite and application |
| CN115364985B (en) * | 2022-08-31 | 2023-12-15 | 碳一新能源集团有限责任公司 | Method for preparing spherical graphite and application |
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