CN1232360C - Secondary cement and raw material selective separation process and fluidized conveyer and selective separating machine thereof - Google Patents
Secondary cement and raw material selective separation process and fluidized conveyer and selective separating machine thereof Download PDFInfo
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- CN1232360C CN1232360C CN 02111440 CN02111440A CN1232360C CN 1232360 C CN1232360 C CN 1232360C CN 02111440 CN02111440 CN 02111440 CN 02111440 A CN02111440 A CN 02111440A CN 1232360 C CN1232360 C CN 1232360C
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- 238000000926 separation method Methods 0.000 title claims description 20
- 239000004568 cement Substances 0.000 title abstract description 7
- 239000002994 raw material Substances 0.000 title description 6
- 239000000843 powder Substances 0.000 claims abstract description 136
- 238000009835 boiling Methods 0.000 claims abstract description 60
- 235000012054 meals Nutrition 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 25
- 239000000428 dust Substances 0.000 claims description 22
- 238000007600 charging Methods 0.000 claims description 9
- 238000009827 uniform distribution Methods 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 5
- 238000009423 ventilation Methods 0.000 abstract 2
- 238000000227 grinding Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000013517 stratification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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Abstract
The present invention relates to a secondary powder selection process for cement and raw meals. Coarse powder back stocks of a main powder separator enters a boiling type conveyer, a high density dusty airflow is separated in a conveying process, the coarse powder back stocks enter a boiling type powder separator to be separated again to obtain qualified secondary final products and secondary coarse stocks, and the secondary coarse stocks come back to an outlet of the boiling type conveyer and are back conveyed to the head of a ball mill in order that the comprehensive powder selection efficiency is improved. When the secondary coarse stocks are back conveyed to the coarse powder back stocks of the ball mill, the proportion of qualified fine powder is reduced, and the ball mill efficiency is enhanced. The boiling type conveyer matched with the powder separator comprises a groove-shaped casing, a top cover, a conveying part, at least one boiling bed and a dusty gas collecting port. The boiling type powder separator matched with the boiling type conveyer comprises a cylindrical casing, a cone-shaped shutter type rotor, an air inlet, an air outlet and a coarse stock outlet, wherein the lower bottom surface of the casing is tilted; a ventilation plate tilted in the same direction as the lower bottom surface is arranged above the lower bottom surface of the casing; a plurality of spray nozzles are uniformly distributed on the ventilation plate to form a circular boiling chute.
Description
(1) technical field:
The present invention relates to select behind a kind of cement or the raw material ball milling Processes and apparatus of powder, a kind of cement, raw material secondary powder separation process and be applied to the fluidized conveyer of this technology, the structure of boiling type powder concentrator.
(2) background technology:
It is that classifying equipoment is chosen qualified fine powder that cement, raw material closed-circuit grinding system generally adopt powder concentrator.Multiple patterns such as that powder concentrator divides is centrifugal, cyclone type, eddy current type, rotating cage type, Osepa.Mill efficiency height is relevant with this system many process conditions, and when the process conditions before cement, raw material go out mill were identical, mill output was relevant with the performance of powder concentrator own.The grinding efficiency of powder concentrator is generally 50-75%.With grinding efficiency 70% is example, still has 30% qualified fine powder of pulverized powder total amount not to be sorted out as yet.These fine powders flow into the coarse fodder conveyer with the meal feed back, return grinding machine and repeat grinding, do harm rather than good.Therefore it is very necessary further to improve grinding efficiency.At present, the method for raising grinding efficiency all is conceived to improve the structure of powder concentrator.For example Chinese patent 95240135.5 has been introduced a kind of efficient rotor formula powder concentrator, is made up of buncher, main shaft, classification circle, blast pipe, discharge pipe, inner core, dropping system, spreading disk, whirlwind tube and cover plate.Grinding efficiency is higher.And for example Chinese patent 94207353.3 has been introduced a kind of high-efficient powder concentrator, utilizes the air-flow material to shrink with tangential rotation, separates and multistage collection sorting by classification, reaches the effect of selecting materials efficient, high fineness.
(3) summary of the invention:
The objective of the invention is to propose a kind of technology and equipment that utilizes the secondary sorting to improve grinding efficiency: a kind of secondary powder separation process and be applied to fluidized conveyer, the boiling type powder concentrator of this technology.
This secondary powder separation process is: the abrasive dust material that goes out of ball mill is sent into and carried out sorting in the main powder separator, obtain qualified finished product and meal feed back, the meal feed back carries out the secondary sorting by secondary powder-selecting equipment again, sub-elect qualified secondary finished product and secondary coarse material, secondary coarse material is sent the ball mill ball milling back to, described secondary powder-selecting equipment comprises fluidized conveyer and boiling type powder concentrator, fluidized conveyer is transported to the ball milling head with the meal feed back that the main powder separator sorting obtains, in course of conveying, from the meal feed back, isolate high-concentration dust-containing airflow, high-concentration dust-containing airflow enters sorting once more in the boiling type powder concentrator, obtain qualified secondary finished product and secondary coarse material, secondary coarse material feeds back to the coarse fodder exit of fluidized conveyer again.
Be applied to the fluidized conveyer of above-mentioned secondary powder separation process, the shell that comprises flute profile, loam cake and transfer unit, it also comprises at least one ebullated bed and a dusty gas collection mouth, described ebullated bed comprises casing and orifice plate, one side of casing has an air inlet, orifice plate is fixed on the top of casing, be uniform-distribution with fumarole on the orifice plate, the below of shell has and is used for the connector that links to each other with ebullated bed, ebullated bed is fixed on the above-mentioned connector, in the fumarole nozzle can also be installed, described dusty gas collection mouth is in and covers, and also has at least one auxiliary air inlet on the sidewall of described shell.
Be applied to the boiling type powder concentrator of above-mentioned secondary powder separation process, comprise columnar shell, conical louvre type rotor, air inlet, air outlet and coarse fodder outlet, the louvre type rotor is in the top of powder concentrator, air outlet is above the louvre type rotor, the coarse fodder outlet is on the downside of powder concentrator, the bottom surface of shell tilts, its top have one with the air permeable plate of bottom surface inclined, be uniform-distribution with some nozzles on this air permeable plate, air permeable plate, bottom surface is formed circular boiling skewed slot, one skewed slot air inlet is arranged on its sidewall, and described coarse fodder outlet is in low side of air permeable plate top.
The course of work of the fluidized conveyer in this secondary powder-selecting equipment is as follows: send into compressed air in the air inlet of the ebullated bed of fluidized conveyer, the main powder separator meal feed back that arrives the ebullated bed top is subjected to the blowing of air of ejection in fumarole on the orifice plate or the nozzle, be in " boiling " state, thinner particle is pranced and is spilt in the air, mix with the auxiliary wind of coming in from auxiliary air inlet, moderately diluted, by dusty gas collect mouthful inhale from, enter in the boiling type powder concentrator, sub-elect qualified product once more, and thicker particle continues to be fed forward.
The boiling type powder concentrator course of work is: powder is driven by high-speed gas, enter the powder concentrator from air inlet, rotation is risen, and the coarse grain that centrifugalization arrives barrel sinks because of friction in advance, when all the other particles enter blind window by the rotor driven rotary, centrifugal action strengthens, wherein the coarse grain that quality is bigger is thrown to outer wall, has only the less relatively powder of quality under the air outlet suction function, just can pass blind window, extract out from air outlet, enter gathering-device and be collected as finished product.The adjusting spinner velocity can be controlled the fineness by the blind window powder, until qualified.When the meal that sinks is fallen the powder concentrator bottom, be subjected to blowing of the air-flow that sprays in the nozzle on the air permeable plate, be in " boiling " state, fine powder wherein has an opportunity to kick up again, and rising is passed the louvre type rotor and is collected, and has improved grinding efficiency.
This secondary powder separation process is owing to carry out rough segmentation with fluidized conveyer with the meal feed back that main powder separator sorts out, the high-concentration dust-containing airflow that obtains enters sorting in the boiling type powder concentrator again, comprehensive grinding efficiency is improved, the ratio that feeds back to qualified fine powder in the ball mill meal feed back greatly descends, and has improved grinding efficiency.In addition, it is less to handle the required total blast volume of high concentration dust-contained airflow, helps selecting for use less boiling type powder concentrator and blower fan.
(4) description of drawings:
Accompanying drawing 1 is the flow chart of this secondary powder separation process;
Accompanying drawing 2 is the structure chart of fluidized conveyer;
Accompanying drawing 3 is the vertical view of Fig. 2;
Accompanying drawing 4 is the A-A cutaway view of Fig. 2;
Accompanying drawing 5 is the structure chart of ebullated bed;
Accompanying drawing 6 is the vertical view of Fig. 5;
Accompanying drawing 7 is the left view of Fig. 5;
Accompanying drawing 8 is the structure chart of fumarole;
Accompanying drawing 9 is structure of nozzle figure.
The structure chart of the fluidized conveyer when accompanying drawing 10 is an air conveyer flume for transfer unit;
Accompanying drawing 12 is ebullated bed structure of nozzle figure in the air conveyer flume;
Accompanying drawing 13 is structure charts of boiling type powder concentrator;
Accompanying drawing 14 is B-B cutaway views of Figure 13;
Accompanying drawing 15 is structure charts of the boiling type powder concentrator of lower central air intake;
Accompanying drawing 16 is C-C cutaway views of Figure 15;
Accompanying drawing 17 is structure charts of the integrated boiling type powder concentrator of lower central air intake;
Accompanying drawing 18 is vertical views of Figure 17;
Accompanying drawing 21 is E-E cutaway views of Figure 17;
Accompanying drawing 22 is sectional views of air conveyer flume;
Accompanying drawing 23 is structure charts of the integrated boiling type powder concentrator of top charging;
Accompanying drawing 24 is a kind of more detailed schemes of Fig. 1 technology;
Accompanying drawing 25 is the more detailed schemes of the another kind of Fig. 1 technology;
Secondary powder separation process scheme when accompanying drawing 26 is application integration boiling type powder concentrator;
Accompanying drawing 27 is to use the secondary powder separation process scheme of charging aperture at the integrated boiling type powder concentrator at top.
(5) specific embodiment:
As shown in Figure 1, secondary powder separation process comprises to be sent into the abrasive dust material that of ball mill to carry out sorting in the main powder separator, obtain qualified finished product and meal feed back, the meal feed back carries out the secondary sorting by secondary powder-selecting equipment again, sub-elect qualified secondary finished product and secondary coarse material, secondary coarse material is sent the ball mill ball milling back to, described secondary powder-selecting equipment comprises fluidized conveyer and boiling type powder concentrator, fluidized conveyer is transported to the ball milling head with the meal feed back that the main powder separator sorting obtains, in course of conveying, from the meal feed back, isolate high-concentration dust-containing airflow, high-concentration dust-containing airflow enters sorting once more in the boiling type powder concentrator, obtain qualified secondary finished product and secondary coarse material, secondary coarse material feeds back to the coarse fodder exit of fluidized conveyer again.
As Fig. 2, Fig. 3 and shown in Figure 4, this fluidized conveyer comprises shell 7, loam cake 4 and the transfer unit (among the figure for helix transporting device 1) of flute profile.It also comprises at least one ebullated bed 6 (being three ebullated beds among the figure) and a dusty gas collection mouth 5.As Fig. 5, Fig. 6 and shown in Figure 7, described ebullated bed comprises casing 15 and orifice plate 11, and a side of casing has an air inlet 9.Orifice plate is fixed on the top of casing, is uniform-distribution with fumarole 16 on the orifice plate.As Fig. 2 and shown in Figure 4, the below of shell 7 has and is used for the connector 19 that links to each other with ebullated bed, and ebullated bed 6 is fixed on the above-mentioned connector 19, and described dusty gas is collected mouthfuls 5 and is on the loam cake 4.2 is the charging aperture of conveyer among Fig. 2, and 8 is the discharging opening of conveyer.
Send into air from the air inlet 9 of ebullated bed, dusty gas is collected mouthfuls 5 and is linked to each other with induced-draught fan.The material that arrives ebullated bed 6 tops is subjected on the orifice plate 11 blowing of the air of ejection in the fumarole 16, be in " boiling " state, thinner particle prance spill into aerial, by dusty gas collect mouthful inhale from, enter sorting again in the secondary sorting unit, thicker particle continues to be fed forward.
As shown in Figure 5 and Figure 8, can also there be a valve plate 12 the following of orifice plate 11 on the ebullated bed 6 in the described fluidized conveyer, have on this valve plate with orifice plate on fumarole 16 corresponding holes 17, one end of valve plate links to each other with a pushing mechanism 13 on the ebullated bed sidewall, and above-mentioned pushing mechanism can be cylinder, screw mandrel, lever or cam mechanism.This valve plate is to be used for when conveyer is not worked fumarole being closed, in order to avoid the leftover materials in the conveyer flow in the casing 15 of ebullated bed.Closing and open by pushing mechanism 13 of valve plate finished.14 rollers among Fig. 5 for supporting valve plate 12.
As shown in Figure 9, on the fumarole on the orifice plate of the ebullated bed of this fluidized conveyer nozzle can also be housed.Nozzle with can adopt being connected of orifice plate cooperate plug-in type, be threaded, various forms such as jump ring connection.Nozzle can dismounting and change.Adorn an overcoat 20 on the nozzle fuse 18, the hole of answering is relative to each other arranged on overcoat and the fuse, rotary sleeve, the aperture of nozzle just can change flexibly, air-out direction also can be arranged to different forms, when the hole of nozzle is downward-sloping, can prevent from that material is counter to flow in the ebullated bed casing, at this moment, valve plate 12, pushing mechanism 13, roller 14 all can omit.
As shown in Figure 7, opposite side with air inlet 9 on the described ebullated bed casing 15 can also have an ash discharging hole 10, is used for removing the dust stratification in the ebullated bed casing: put a pocket on ash discharging hole 10, start blower fan, be blown into air from air inlet 9, the dust stratification in the casing just is blown in the bag.
Because the boiling air quantity by nozzle is less,, can also on the sidewall of shell 7, increase one or two auxiliary air inlet 3 as shown in Figures 2 and 3 for the powder that helps to have been seethed with excitement in the fluidized conveyer enters the secondary sorting unit rapidly in large quantities.The air outlet of auxiliary air inlet 3 with the bigger accessory fan of wind supply quantity linked to each other, and air inlet is linked to each other with the air outlet of secondary sorting unit, form closed cycle wind.
That this fluidized conveyer can manufacture specially is spiral, scraper-type or chain fortune formula.Also can convert with the conveyer of existing these patterns.During repacking, the outer casing bottom increase connector at existing conveyer is fixed to ebullated bed on the connector, increases auxiliary air inlet on sidewall, covers the increase air outlet last, and interior flow velocity of consideration machine and resistance, need increase the height of conveyer sidewall in case of necessity.
As shown in Figure 10 and Figure 11, the transfer unit of fluidized conveyer also can be an air conveyer flume, comprise feeding chamber 24, air feed chamber 23 and the air permeable plate between them 25, air feed chamber high-end has air inlet 21, the low side of feeding chamber is a powder outlet 8, described ebullated bed is a section 22 in the air flume, in this section, is uniform-distribution with nozzle on the air permeable plate, dusty gas collection mouth 5 is equipped with at the top of feeding chamber, and the position of this dusty gas collection mouth should be adjacent with discharging opening 8.The operation principle of air flume is: blast air from air inlet 21, these air parts see through air permeable plate 25 equably, make the powder on the air permeable plate become fluidised form, and powder just flows from the incline direction of trend air permeable plate, flow out from discharging opening 8.Remaining another part air sprays from nozzle, and the fine powder in the material is dispelled in the air, collects mouthful 5 collections by dusty gas.The resistance of air permeable plate and nozzle should check, and makes nozzle resistance (crushing) be slightly larger than the air permeable plate resistance.
The ebullated bed structure of nozzle is to be uniform-distribution with some holes on air permeable plate 25 as shown in figure 12 in the air flume, and nozzle is fixed on the hole.Described air permeable plate 25 can be the ceramic air permeable plate or the flexible fabric air-permeability plate of rigidity.Nozzle can be a kind of detachable.One fuse 18 and an overcoat 20 can be arranged on the nozzle, fuse and put in correspondence with each other spray orifice outward, rotary sleeve 20 can be regulated the size of the effective aperture of nozzle.
As Figure 13, shown in Figure 14, the boiling type powder concentrator comprises columnar shell 29, conical louvre type rotor 28, air inlet 27, air outlet 26 and coarse fodder outlet 30.Louvre type rotor 28 is in the top of powder concentrator, and air outlet 26 is above the louvre type rotor, and coarse fodder outlet 30 is on the downside of powder concentrator.The bottom surface 32 of shell 29 tilts, its top have one with the air permeable plate 33 of bottom surface inclined, be uniform-distribution with some nozzles 46 on this air permeable plate, air permeable plate, bottom surface are formed circular boiling skewed slot, one skewed slot air inlet 31 is arranged on its sidewall, and described coarse fodder outlet 30 is in low side of air permeable plate 33 tops.
The boiling skewed slot of the operation principle of the boiling skewed slot in this boiling type powder concentrator and conveyer shown in Figure 10 is similar, from skewed slot air inlet 31, blast air, these air parts see through air permeable plate equably, make the powder on the air permeable plate become fluidised form, powder just flows from the incline direction of trend air permeable plate, flows out from the coarse fodder outlet.Remaining another part air sprays from nozzle, makes the powder of falling on the air permeable plate become fluidized state, and fine powder is wherein just kicked up again, rises, and passes the louvre type rotor, gets up as qualified fines collection.The structure of nozzle also structure with shown in Figure 12 is identical.
The air intake mode of the boiling type powder concentrator shown in Figure 13 is the lower tangential air intake, and air inlet 27 is in boiling type powder concentrator bottom one side, from tangential air intake.
Figure 15 and boiling type powder concentrator shown in Figure 16 are the lower central air intake, and air inlet 27 is at the center of bottom surface.Blast pipe turns to after stretching in the powder concentrator again, forms two tangential outlets 34.
This boiling type powder concentrator can also be combined cyclone dust collectors and powder concentrator, becomes integrated boiling type powder concentrator.Its structure such as Figure 17, Figure 18 and shown in Figure 21, it comprises 6 cyclone dust removal tubes 37, the import 36 of cyclone dust removal tube is connected with the top of powder concentrator shell, the top of cyclone dust removal tube links to each other with two semiorbicular discharge pipes 35, and the outlet 38 of cyclone dust removal tube lower end links to each other with two broken line shape skewed slots 39 respectively.Above-mentioned skewed slot is a kind of air conveyer flume, and its structure comprises feeding chamber 41 as shown in figure 22, air feed chamber 43 and the air permeable plate between them 42, and air feed chamber high-end has air inlet 40, and the low side of feeding chamber is a powder outlet.Blast air from the air inlet of air conveyer flume, the material in the feeding chamber just is in fluidised form, can flow to low side from high-end automatically, flows out from powder outlet at last.This broken line shape air conveyer flume combines with foregoing circular boiling skewed slot, can make the profile of powder concentrator that great change takes place, and it is about 1/3rd that height can reduce, and weight also greatly alleviates.Can change the design of original grinding factory building, can be installed on the meal feed back link of original main powder separator, carry out secondary and select powder, to improve grinding efficiency.
The feeding manner of integrated boiling type powder concentrator shown in Figure 17 and the powder concentrator structural similarity among Figure 15 are the lower central feed types, and the air outlet structure of its blast pipe as shown in figure 20.When the feeding manner of integrated boiling type powder concentrator shown in Figure 17 adopts structure shown in Figure 19, just become the lower tangential air intake.This two kinds of chargings (air intake) mode all is to bring powder into powder concentrator by the wind of high-speed large-flow to carry out the secondary sorting.This class powder concentrator is applicable to the relatively low situation of powder content in the unit volume gas.
Consider to think that in case of necessity powder concentrator can adopt top feeding manner shown in Figure 23 in technology.Charging aperture 44 is positioned at the top of powder concentrator, and material can be transported in the charging aperture by the right angle screw elevator.The bottom of powder concentrator has circular boiling skewed slot and broken line shape to carry skewed slot, to reduce the powder concentrator height and to improve grinding efficiency.
The shape of two broken line shape skewed slots 39 in Figure 17 and the boiling type powder concentrator shown in Figure 23 also can be made semi-circular.Can reach the purpose of same conveying powder.
Secondary powder separation process scheme when using a fluidized conveyer and Figure 13 or boiling type powder concentrator shown in Figure 15 shown in Figure 24.Adopt external I and II deduster to collect finished product.The table of equipment number is more, and energy consumption is high slightly, and blast is higher, but yield is higher, and fan life is also longer.Used boiling type powder concentrator height is lower, makes for old mill housing reform, and is when floor height is restricted, more suitable.
Secondary powder separation process scheme shown in the accompanying drawing 25 also is by a fluidized conveyer, and boiling type powder concentrator and I and II deduster are formed, but only select a centrifugal high pressure fan air feed for use.
Secondary powder separation process scheme shown in the accompanying drawing 26 is to select a fluidized conveyer and an integrated boiling type powder concentrator shown in Figure 17 for use.Can save dust collection device.
As shown in figure 27, secondary powder-selecting equipment in this secondary powder separation process also can be a charging aperture shown in Figure 23 integrated boiling type powder concentrator and ell screw elevator at the top, main powder separator meal feed back is transported to the charging aperture at boiling type powder concentrator top by the ell screw elevator, divide hank secondary finished product and secondary coarse material in the boiling type powder concentrator, secondary coarse material feeds back to and carries out ball milling in the ball mill bistrique.Select this boiling type powder concentrator for use, need the higher factory building of floor height, or in the flooring perforate at equipment top, thereby being applicable to relatively large grinding system or newly-built system, accessible powder amount is also bigger.
Claims (7)
1, a kind of secondary powder separation process, comprise the abrasive dust material that of ball mill is sent into and carried out sorting in the main powder separator, obtain qualified finished product and meal feed back, the meal feed back carries out the secondary sorting by secondary powder-selecting equipment again, sub-elect qualified secondary finished product and secondary coarse material, secondary coarse material is sent the ball mill ball milling back to, it is characterized in that, described secondary powder-selecting equipment comprises fluidized conveyer and boiling type powder concentrator, fluidized conveyer is transported to the ball milling head with the meal feed back that the main powder separator sorting obtains, in course of conveying, from the meal feed back, isolate high-concentration dust-containing airflow, high-concentration dust-containing airflow enters sorting once more in the boiling type powder concentrator, obtain qualified secondary finished product and secondary coarse material, secondary coarse material feeds back to the coarse fodder exit of fluidized conveyer again.
2, secondary powder separation process as claimed in claim 1, it is characterized in that described fluidized conveyer comprises the shell (7) of flute profile, loam cake (4) and transfer unit, it also comprises at least one ebullated bed (6) and a dusty gas collection mouthful (5), described ebullated bed comprises casing (15) and orifice plate (11), one side of casing has an air inlet (9), orifice plate is fixed on the top of casing, be uniform-distribution with fumarole (16) on the orifice plate, the below of shell (7) has and is used for the connector (19) that links to each other with ebullated bed, ebullated bed (6) is fixed on the above-mentioned connector (19), described dusty gas is collected mouthful (5) and is on the loam cake (4), also has at least one auxiliary air inlet (3) on the sidewall of described shell (7).
3, secondary powder separation process as claimed in claim 2 is characterized in that on the fumarole on the orifice plate of ebullated bed of described fluidized conveyer adjustable nozzle being arranged.
4, secondary powder separation process as claimed in claim 3, the transfer unit that it is characterized in that described fluidized conveyer is an air conveyer flume, comprise feeding chamber (24), air feed chamber (23) and the air permeable plate between them (25), air feed chamber high-end have air inlet (21), and the low side of feeding chamber is powder outlet (8), described ebullated bed is a section (22) in the air flume, in this section, be uniform-distribution with nozzle on the air permeable plate, dusty gas collection mouthful (5) is equipped with at the tail end top of feeding chamber.
5, boiling type powder concentrator described in a kind of claim 1, comprise columnar shell (29), conical louvre type rotor (28), air inlet (27), air outlet (26) and coarse fodder outlet (30), louvre type rotor (28) is in the top of powder concentrator, air outlet (26) is above the louvre type rotor, coarse fodder outlet (30) is on the downside of powder concentrator, the bottom surface (32) that it is characterized in that shell (29) tilts, its top have one with the air permeable plate (33) of bottom surface inclined, be uniform-distribution with some nozzles (46) on this air permeable plate, air permeable plate, bottom surface is formed circular boiling skewed slot, one skewed slot air inlet (31) is arranged on its sidewall, and described coarse fodder outlet (30) is in low side of air permeable plate (33) top.
6, boiling type powder concentrator as claimed in claim 5, it is characterized in that it also comprises 6 cyclone dust removal tubes (37), the import of cyclone dust removal tube (36) is connected with the top of powder concentrator shell, the top of cyclone dust removal tube links to each other with two semiorbicular collecting pipes (35), the outlet (38) of cyclone dust removal tube lower end links to each other with two broken line shape skewed slots (39) respectively, above-mentioned skewed slot is a kind of air conveyer flume, comprise feeding chamber (41), air feed chamber (43) and the air permeable plate between them (42), air feed chamber high-end has air inlet (40), and the low side of feeding chamber is a powder outlet.
7, boiling type powder concentrator as claimed in claim 6 is characterized in that a charging aperture (44) is arranged at its top, and described air inlet (27) is in the side of housing (29) bottom, is tangent air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111440 CN1232360C (en) | 2002-04-18 | 2002-04-18 | Secondary cement and raw material selective separation process and fluidized conveyer and selective separating machine thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111440 CN1232360C (en) | 2002-04-18 | 2002-04-18 | Secondary cement and raw material selective separation process and fluidized conveyer and selective separating machine thereof |
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| CN1451487A CN1451487A (en) | 2003-10-29 |
| CN1232360C true CN1232360C (en) | 2005-12-21 |
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| CN 02111440 Expired - Fee Related CN1232360C (en) | 2002-04-18 | 2002-04-18 | Secondary cement and raw material selective separation process and fluidized conveyer and selective separating machine thereof |
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| CN100408206C (en) * | 2006-07-31 | 2008-08-06 | 何亚民 | Method for preparing raw material of cement and equipment therefor |
| CN114180343A (en) * | 2021-10-29 | 2022-03-15 | 淮北矿业股份有限公司 | Method for improving ash conveying system |
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