CN101354215A - Inorganic salt uniform calcination rotary kiln - Google Patents
Inorganic salt uniform calcination rotary kiln Download PDFInfo
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- CN101354215A CN101354215A CNA2008100511923A CN200810051192A CN101354215A CN 101354215 A CN101354215 A CN 101354215A CN A2008100511923 A CNA2008100511923 A CN A2008100511923A CN 200810051192 A CN200810051192 A CN 200810051192A CN 101354215 A CN101354215 A CN 101354215A
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Abstract
The invention discloses a rotary kiln for evenly roasting of inorganic salts; a heating pipe in the kiln body is provided with a baffle. A feeding mechanism is provided with a double roll crushing device, a 2-level rod milling system is arranged between the feeding mechanism and the heating pipe, and the rod milling system is fixedly connected with the heating pipe; the 2-level rod milling system is also arranged between a cooling pipe and a material mixing mechanism, and the rod milling system is fixedly connected with the cooling pipe; the material mixing mechanism is a rolling drum, the rolling drum takes the shape of a spindle, a discharging opening can be opened or closed freely, the rolling drum is connected with the rod milling system by a clutch, under the action of the baffle, the tradition moving mode of materials is changed to a parabolic trajectory so as to stir the materials, the materials is evenly heated in the heating pipe; after being crushed by the double roll crushing device of the feeding mechanism and milled by the rod milling system, the roasted materials, are milled again by the rod milling system and mixed by the material mixing device after being cooled in the cooling pipe, therefore, the granularity of the materials is smaller and the uniformity is better, quality difference between batches is reduced and the quality of finished products is improved.
Description
Technical field
The present invention relates to the inorganic salts roasting apparatus, exactly is a kind of inorganic salts calcination rotary kiln.
Background technology
Non-ferrous metal salt or sediment roasting become oxide, as: nickel salt (or hydroxide) roasting becomes nickel oxide, and cobalt salt (or hydroxide) roasting becomes cobalt oxide; The secondary rechargeable battery positive electrode prepares lithium ion cell anode material lithium cobaltate as solid phase method, LiMn2O4, lithium nickel cobalt dioxide, ternary system nickle cobalt lithium manganate and LiFePO4; Magnetic materials etc. adopt hundreds of degree temperature roasting modes to obtain usually.Kiln commonly used is roller-way stove, tunnel cave, pushed bat kiln, rotary kiln etc.Adopt roller-way stove, tunnel cave, pushed bat kiln major defect to be: (1) uses porcelain boat, saggar, crucible storage material, and the amount of labour is big, and yield in unit time is low; (2) roasting lack of homogeneity, around the storage material saggar, the material at upper, middle and lower position is subjected to non-uniform temperature, cause product quality inhomogeneous, the oxidation owner content that is embodied in diverse location is inconsistent, crystallite dimension change difference greatly, wide, the XRD of oxide size distribution detects the variation of halfwidth difference greatly.The above relatively kiln of rotary kiln has some improvement to the defective of above-mentioned existence.
Rotary kiln appearred in 1885, till now surplus in the of 100 year.Its kiln cylinder body is horizontally-arranged, slightly tilts, and generally about the 1-5 degree, baking heat is done gyration.Rotary kiln has two types, and a class is the integral structure of German Riedhammer company; Another kind of is the red segmentation structure of seeing that Co., Ltd. releases of Japan.This two class formations form pros and cons cross-reference, each has something to recommend him.
The rotary kiln mode of heating is three kinds: fuel oil rotary kiln, combustion gas rotary kiln, electric heating rotary kiln.In electricity, oil, three kinds of mode of heatings of gas, electric heating is a kind of energy that cleans most, except taking and distributing conveniently, also have heat and imitate height, no flue gas, no lime-ash and take away simply characteristics such as compactness, area of dissipation is little, radiation loss is few, be easy to automatic control and adjustment, kiln temperature control precision height, suitable narrower calcined temperature technological requirement of sensible heat, kiln structure, this be fuel oil and combustion gas mode of heating can not compare.Electric heating rotary kiln not only need not to build fuel storing station, field, fuel buying transportation and safety management work have been simplified, the fuel oil rotary kiln is 2.6-2.9 a times of electric heating rotary kiln, the combustion gas rotary kiln is 3.1-3.3 a times of electric heating rotary kiln, and then fuel oil, combustion gas rotary kiln exceed electric heating rotary kiln 48% and 25% respectively to operation power consumption cost.
Electric heating rotary kiln adopts resistance material to heat as heating.The rotary kiln that introduce from German Riedhammer company the eighties in 20th century, its heating element heater is to adopt nichrome (1Crl8Ni9Ti or Cr25Ni20Si2) or Aludirome (0Crl3A14 or 0Cr25A15) to make the spirality heater, and generally three layouts are installed at the bottom of Yao Qiang both sides and kiln.Advantage is that kiln pipe three faces are heated, homogeneous heating, thermal efficiency height; Damage in case shortcoming is a kiln wall heater, must start the kiln top cover, hang out can repair behind the kiln pipe and change, operation is trouble very, and time-consuming, has influenced production widely.Several times after the production domesticization, now be improved to Elema (SiC) and made heating element heater, arranged at kiln bill kept on file face.Though be that single side radiation conducts heat like this, because the kiln pipe at the uniform velocity rotates, pipe is heated still very even, therefore, is not influencing under the rotary kiln thermal efficiency and the nominal situation condition, has solved heating element heater well and has conveniently repaiied the problem of changing.Liu's literary grace in periodical " magnetic material and device " 2004 the 1st phases " discussion of a rotary kiln overall structure and mode of heating " literary composition, detailed overall structure form and the mode of heating of having inquired into rotary kiln.
But also there are a lot of problems in the rotary kiln that uses at present, show that mainly the feed particles size is inhomogeneous, material in the burner hearth heating tube, turn round the heating inhomogeneous, roll easily and form spherical bulky grain, cause the raw meal particle size size behind the sintering inhomogeneous, influenced end product quality, mass discrepancy is bigger between batch, sees also Fig. 4.
Summary of the invention
The objective of the invention is in order to solve inorganic salts calcination rotary kiln feed particles size inhomogeneously, the material heating of turning round in the burner hearth heating tube is inhomogeneous, rolls easily and forms spherical oarse-grained problem, and inorganic salt uniform calcination rotary kiln is provided.
The present invention realizes by following technical scheme, inorganic salt uniform calcination rotary kiln, it comprises: the bracing or strutting arrangement of feeding mechanism, kiln body, heating tube, cooling body, discharging mechanism, support roller driving mechanism, adjustable inclination angle, be provided with heater in the kiln body, heating tube passes the kiln body, cooling body is provided with cooling tube, heating tube and cooling tube fuse, and it is characterized in that: described heating tube has baffle plate;
Described baffle plate is 3-4;
Described feeding mechanism is provided with the pair roller breaker;
Be provided with the rod milling system between feeding mechanism and heating tube, the rod milling system fixedlys connected with heating tube, the inter-agency rod milling system that also is provided with of cooling tube and batch mixing, and the rod milling system fixedlys connected with cooling tube;
The rod milling system is 2 grades between feeding mechanism and the heating tube, 2 grades of the inter-agency rod milling of cooling tube and batch mixing systems;
Described batch mixing mechanism is a drum-type, and cylinder is a spindle, but the discharging opening freely openable, and cylinder is connected with the rod milling system by clutch.
Frotton in the rod milling system is 5-24 limit shape or circle/or their combination.
Regulate bracing or strutting arrangement, allow the rod milling system that links together, heating tube, cooling tube, cylinder in rod milling system and the mixing device, horizontal line becomes certain angle of inclination relatively, general 2-5 degree, start support roller drive unit and pair roller breaker, the rod milling system, heating tube, cooling tube, cylinder in rod milling system and the mixing device turns round synchronously, pour material into feeding mechanism,, import the rod milling system through to after the fragmentation of rod breaker, through the rod milling of two-stage rod milling system, material enters and adds thermal bake-out in the heating tube, and calcining matter passes through the two-stage rod milling after cooling off again in cooling tube, enter the mixing device batch mixing, in cylinder, reach some, break away from, open discharge hole for discharge by the cylinder and the rotary system of clutch by mixing device, close discharging opening afterwards, clutch suits and works on.
Because heating tube is provided with baffle plate, material makes material become the parabolical movement locus by traditional moving movement mode under the effect of baffle plate, makes material play stirring action, is heated evenly in heating tube; Again through the batch mixing of rod milling of rod milling system and mixing device, raw meal particle size was littler after the fragmentation of pair roller breaker, the rod milling of rod milling system, the calcining matter of process feeding mechanism cooled off in cooling tube, and uniformity is better; Mass discrepancy between having dwindled batch has improved end product quality.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a heating tube cross sectional representation of the present invention.
Fig. 3 is rod milling of the present invention system cross sectional representation.
Fig. 4 is material movement trajectory diagram in the no baffle plate heating tube.
1, centrifugal 2, racing current 3, waterfall stream 4, roll 5, slide 6, the normal rising
7, core
The specific embodiment
See also Fig. 1, Fig. 2, Fig. 3, shown in Figure 5, inorganic salt uniform calcination rotary kiln of the present invention, it comprises: the bracing or strutting arrangement 8 of feeding mechanism 9, kiln body 1, heating tube 2, cooling body 4, discharging mechanism 7, support roller driving mechanism 6, adjustable inclination angle, be provided with heater 3 in the kiln body 1, heating tube 2 passes kiln body 1, cooling body 5 is provided with cooling tube 41, heating tube 2 fuses with cooling tube 41, and described heating tube 2 has 4 baffle plates 21; Described feeding mechanism 9 is provided with pair roller breaker 91; Be provided with rod milling system 5 between feeding mechanism 9 and heating tube 2, rod milling system 5 fixedlys connected with heating tube 2, and 7 in cooling tube 41 and batch mixing mechanism also are provided with rod milling system 5, and rod milling system 5 fixedlys connected with cooling tube 41; Rod milling system 5 is 2 between feeding mechanism 9 and the heating tube 2, there are 2 rod milling systems in 7 in cooling tube 41 and batch mixing mechanism, cooling tube 41 is fixedlyed connected described batch mixing mechanism 7 and is drum-type with rod milling system 5, cylinder 71 is a spindle, but discharging opening 72 freely openables, rod milling system 5 is connected with cylinder by clutch 10, and the frotton 51 in the rod milling system 5 is 6 limit shapes.
During use, regulate bracing or strutting arrangement 8, allow the rod milling system 5 that links together, heating tube 2, cooling tube 41, cylinder 71 in rod milling system 5 and the mixing device 7, horizontal line becomes certain angle of inclination relatively, general 5 degree, start support roller drive unit 6 and pair roller breaker 91, rod milling system 5, heating tube 2, cooling tube 41, cylinder 71 in rod milling system 5 and the mixing device 7 turns round synchronously, pour material into feeding mechanism 9, process is to after 91 fragmentations of rod breaker, input rod milling system 5, through 5 rod millings of two-stage rod milling system, material enters in the heating tube 2 and adds thermal bake-out, after calcining matter cools off in cooling tube 41, pass through the two-stage rod milling again, enter mixing device 7 batch mixings, in cylinder 71, reach some, allow the cylinder 71 of mixing device 7 and rotary system break away from by clutch 10, open discharging opening 72 dischargings, close discharging opening 72 afterwards, clutch 10 suits and works on.
Because heating tube is provided with baffle plate 21, material makes material become the parabolical movement locus by traditional moving movement mode under the effect of baffle plate 21, makes material play stirring action, is heated evenly in heating tube 2; Again through the batch mixing of 5 rod millings of rod milling system and mixing device 7, raw meal particle size was littler after 91 fragmentations of pair roller breaker, 5 rod millings of rod milling system, the calcining matter of process feeding mechanism 9 cooled off in cooling tube 41, and uniformity is better; Mass discrepancy between having dwindled batch has improved end product quality.
Claims (7)
1, inorganic salt uniform calcination rotary kiln, it comprises: the bracing or strutting arrangement of feeding mechanism, kiln body, heating tube, cooling body, discharging mechanism, support roller driving mechanism, adjustable inclination angle, be provided with heater in the kiln body, heating tube passes the kiln body, cooling body is provided with cooling tube, heating tube and cooling tube fuse, and it is characterized in that: described heating tube has baffle plate.
2, according to the described inorganic salt uniform calcination rotary kiln of claim 1, it is characterized in that: described baffle plate is 3-4.
3, according to the described inorganic salt uniform calcination rotary kiln of claim 1, it is characterized in that: described feeding mechanism is provided with the pair roller breaker.
4, according to the described inorganic salt uniform calcination rotary kiln of claim 1, it is characterized in that: between feeding mechanism and heating tube, be provided with the rod milling system, the rod milling system fixedlys connected with heating tube, the inter-agency rod milling system that also is provided with of cooling tube and batch mixing, and the rod milling system fixedlys connected with cooling tube.
5, according to the described inorganic salt uniform calcination rotary kiln of claim 4, it is characterized in that: the rod milling system is 2 grades between feeding mechanism and the heating tube, 2 grades of the inter-agency rod milling of cooling tube and batch mixing systems.
6, according to claim 1,2,3,4,5 described inorganic salt uniform calcination rotary kiln, it is characterized in that: described batch mixing mechanism is a drum-type, and cylinder is a spindle, but the discharging opening freely openable, and cylinder is connected with the rod milling system by clutch.
7, according to the described inorganic salt uniform calcination rotary kiln of claim 6, it is characterized in that: the frotton in the rod milling system is 5-24 limit shape or circle/or their combination.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100511923A CN101354215A (en) | 2008-09-19 | 2008-09-19 | Inorganic salt uniform calcination rotary kiln |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100511923A CN101354215A (en) | 2008-09-19 | 2008-09-19 | Inorganic salt uniform calcination rotary kiln |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139928A (en) * | 2011-05-09 | 2011-08-03 | 湖南大学 | Production method for lithium cobalt oxide material and industrial preparation device thereof |
| CN102745751A (en) * | 2011-04-21 | 2012-10-24 | 湖南省醴陵市科发窑炉热工设备有限公司 | Multifunctional full automatic sintering apparatus for lithium cobalt oxide |
| CN102978419A (en) * | 2012-12-17 | 2013-03-20 | 江西稀有稀土金属钨业集团有限公司 | Electrically-heating and integrally-rotating resistance furnace capable of sintering anhydrous cobalt chloride into cobalt oxide product |
| CN108425006A (en) * | 2017-12-27 | 2018-08-21 | 攀枝花兴辰钒钛有限公司 | Stockline is broken in the calcining of spodumene concentrate |
| CN110057190A (en) * | 2019-05-22 | 2019-07-26 | 江苏凤谷节能科技有限公司 | Interior heat storage formula rotary kiln |
| CN110530147A (en) * | 2019-07-30 | 2019-12-03 | 佛山市天禄智能装备科技有限公司 | A kind of high-temperature rotary furnace for the production of lithium battery anode high-nickel material continuous production |
-
2008
- 2008-09-19 CN CNA2008100511923A patent/CN101354215A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745751A (en) * | 2011-04-21 | 2012-10-24 | 湖南省醴陵市科发窑炉热工设备有限公司 | Multifunctional full automatic sintering apparatus for lithium cobalt oxide |
| CN102745751B (en) * | 2011-04-21 | 2015-11-18 | 湖南省醴陵市科发窑炉热工设备有限公司 | The full-automatic device of multi-functional sintered cobalt acid lithium |
| CN102139928A (en) * | 2011-05-09 | 2011-08-03 | 湖南大学 | Production method for lithium cobalt oxide material and industrial preparation device thereof |
| CN102978419A (en) * | 2012-12-17 | 2013-03-20 | 江西稀有稀土金属钨业集团有限公司 | Electrically-heating and integrally-rotating resistance furnace capable of sintering anhydrous cobalt chloride into cobalt oxide product |
| CN108425006A (en) * | 2017-12-27 | 2018-08-21 | 攀枝花兴辰钒钛有限公司 | Stockline is broken in the calcining of spodumene concentrate |
| CN108425006B (en) * | 2017-12-27 | 2023-12-29 | 攀枝花兴辰钒钛有限公司 | Spodumene concentrate calcination breaking line |
| CN110057190A (en) * | 2019-05-22 | 2019-07-26 | 江苏凤谷节能科技有限公司 | Interior heat storage formula rotary kiln |
| CN110530147A (en) * | 2019-07-30 | 2019-12-03 | 佛山市天禄智能装备科技有限公司 | A kind of high-temperature rotary furnace for the production of lithium battery anode high-nickel material continuous production |
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Open date: 20090128 |