CN105080690A - Vertical roller grinding bypass grading drying raw material preparation system and technology - Google Patents
Vertical roller grinding bypass grading drying raw material preparation system and technology Download PDFInfo
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- CN105080690A CN105080690A CN201510494190.1A CN201510494190A CN105080690A CN 105080690 A CN105080690 A CN 105080690A CN 201510494190 A CN201510494190 A CN 201510494190A CN 105080690 A CN105080690 A CN 105080690A
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Abstract
The invention discloses a vertical roller grinding bypass grading drying raw material preparation system. A discharge opening of a raw material hoister is connected with a feed inlet of a vertical roller grinder. A discharge opening of the vertical roller grinder is connected with a feed inlet of a grinding tail hoister. A discharge opening of the grinding tail hoister is connected with a feed inlet of a drying device. A discharge opening of the drying device is connected with a feed inlet of a dry material hoister. A discharge opening of the dry material hoister is connected with a feed inlet of a primary grading device, namely, a V-shaped powder selecting machine. An air outlet of the V-shaped powder selecting machine is connected with an air inlet of a final grading device, namely, an eddy current powder selecting machine. An air outlet of the eddy current powder selecting machine is connected with an air inlet of a cyclone collector. An air outlet of the cyclone collector is connected with an air inlet of a circulation centrifugal fan. An air outlet of the circulation centrifugal fan is connected with an air inlet of a vertical dryer. An air outlet of the vertical dryer is connected with an air inlet of the V-shaped powder selecting machine. According to the vertical roller grinding bypass grading drying raw material preparation system, the advantage that the role that technological parameters of the system are convenient to reasonably adjust and control is fully exerted, and the purposes of increasing production and decreasing consumption of the system are achieved.
Description
Technical field
The present invention relates to a kind of vertical roller grinder bypass classification and dry raw material preparation system and production technology thereof, belong to building material manufacture field.
Background technology
Building material industry new type nonaqueous cement enterprise generally adopts vertical roller grinder to prepare raw material, coal dust, slag powders and cement.Vertical roller grinder prepares raw material, and its grinding unit power consumption is on average at about 20kwh/t, and this system prepares raw material economize on electricity about 25% than conventional bead mill grinding.Production technology prepared by current new type nonaqueous cement enterprise vertical roller grinder raw material, and its raw material grinding, mass transport, raw material stoving and finished product classification are all complete in vertical roll grinder, has technique simple, the advantages such as floor space is little; But due to existing Vertical Mill prepare its stock grading of raw material technique, moisture is dried and mass transport all relies on vertical mill system high wind speed, Wind Volume to realize, this just causes, and SR is large, drying materials classification efficiency is not high, systematic air flow comparatively greatly and the technological parameter of each unit function because of many unfavorable factors such as the limitation on main machine structure cause its technological parameter wayward.
Summary of the invention
Technical problem to be solved by this invention is to provide one and is separated with oven dry, classifying equipoment and conveying equipment by vertical roller grinder, raw material preparation system is dried in the vertical roller grinder bypass classification can be convenient to each cell process parameter of regulation and control, dry, selected powder, mass transport efficiency higher; Further, technical problem to be solved by this invention is, provides a kind of oven dry, selects powder, production technology that raw material preparation system is dried in vertical roller grinder bypass classification that mass transport efficiency is higher; Further, technical problem to be solved by this invention is, raw material preparation system and production technology thereof are dried in the vertical roller grinder bypass classification being convenient to discharging after providing a kind of roller to grind.
For solving above technical problem, the technical solution used in the present invention is: raw material preparation system is dried in a kind of vertical roller grinder bypass classification, comprise vertical roll grinder, raw material elevator, mill tail elevator, drying plant, siccative elevator, circular centrifugal ventilation blower, cyclone collector and meal air conveyer flume, described raw material elevator discharging opening connects described vertical roller grinder machine inlet capable, described vertical roll grinder discharging opening connects described mill tail elevator charging aperture, described mill tail elevator discharging opening connects described drying plant charging aperture, described drying plant discharging opening connects described siccative elevator charging aperture, described siccative elevator discharging opening connects described bypass classifying equipoment charging aperture, described bypass classifying equipoment discharging opening connects described cyclone collector air inlet, described cyclone collector connects circular centrifugal ventilation blower, described cyclone collector discharging opening connects finished product raw material air flume and carries, described meal air conveyer flume is connected with under the hopper of described bypass classifying equipoment, described meal air conveyer flume connects the charging aperture of described vertical roll grinder.
Preferably, described drying plant is vertical drying raw meal machine.
Preferably, described bypass classifying equipoment is V-type powder concentrator and vortex classifier, described siccative elevator discharging opening connects the air inlet of described V-type powder concentrator, the air outlet of described V-type powder concentrator connects vortex classifier air inlet, described vortex classifier air outlet connects the air inlet of cyclone separator, the air outlet of described cyclone separator connects the air inlet of circular centrifugal ventilation blower, the described air outlet of circular centrifugal ventilation blower is connected with the air inlet of tower drier, the air outlet of described tower drier connects the air inlet of V-type powder concentrator, the meal discharging opening of described vortex classifier connects the charging aperture of meal air conveyer flume, the discharging opening of meal air conveyer flume connects the charging aperture of vertical roller grinder, described cyclone collector discharging opening connects finished product raw material air flume and carries, enter warehouse for finished product.
Preferably, in described vertical roll grinder, homogenizing device is set.
Raw material preparation technology is dried in a kind of vertical roller grinder bypass classification, comprises following steps:
One, grinding: described raw material elevator transferring raw material is to described vertical roll grinder, and described vertical roll grinder carries out raw material grinding;
Two, dry: the raw material after grinding is delivered to described drying plant through described mill tail elevator and carries out drying materials;
Three, classification: the raw material after oven dry is delivered to described V-type powder concentrator through described siccative elevator, described V-type powder concentrator carries out material cake and breaks up and first classification, then is delivered to described vortex classifier and carries out finished product classification;
Four, put in storage: after classification, meal is transmitted back to described vertical roll grinder through described meal air conveyer flume and carries out continuations grinding, and fine powder is separated by cyclone collector material gas, and cyclone collector connects finished product raw material air flume, carries finished product raw material to enter warehouse for finished product.
Preferably, in described vertical roll grinder, material bearing disc and material scraping plate are set.
Preferably, raw material after grinding, after being scraped, by described mill tail elevator is carried after being collected by described material bearing disc by described material scraping plate in described vertical roll grinder again.
Raw material preparation system and technique are dried in a kind of vertical roller grinder bypass classification provided by the present invention, by drying plant, bypass classifying equipoment, raw material elevator, mill tail elevator, siccative elevator, cyclone collector, meal air conveyer flume, circular centrifugal ventilation blower, achieve vertical roller grinder and be separated with oven dry, classifying equipoment and conveying equipment, and each cell process parameter of regulation and control can be convenient to, thus bring following beneficial effect:
1, drying efficiency is higher.Vertical drying raw meal machine is adopted to be convenient to for material drying feature optimal design, its thermal efficiency is higher, the use amount of drying medium by reducing tail gas can increase cogeneration amount, is that the air quantity of main exhaust fan is declined greatly on the other hand, and energy saving of system consumption reduction obviously.For high-moisture raw material, adopt special equipment owing to drying, its adaptability is stronger.
2, grinding efficiency is higher.Adopt bypass hierarchy system, former vertical roller grinder can be overcome carry classifying equipoment and cause because of the restriction of structural design grader divergent function not optimize causing grinding efficiency not good, the grader separated can be optimized design according to raw material fineness characteristic distributions, is convenient to improve classification efficiency and reduction system air quantity.
3, mass transport efficiency improves.To be heat smoke by vertical roller grinder body be promoted to grinding material pneumatic conveying mode existing vertical roller grinder system material carries grader and carry out classification, because the equipment resistance of vertical roller grinder generally all reaches about 6000Pa, thus voltage loss is larger, in addition the efficiency of Geldart-D particle is lower, the present invention arranges raw material elevator, mill tail elevator, siccative elevator, cyclone collector, meal air conveyer flume, circular centrifugal ventilation blower as mechanical mass conveying equipment, improve transfer efficiency, and reduce systemic circulation centrifugal fan total head.
Dry hierarchy system by bypass and prepare Raw Material System technique, the comparable original system of its production capacity improves about 20%, can reduce raw material about unit consumption 3-7kwh/t.
Further, in described vertical roll grinder, material bearing disc and material scraping plate are set.
Raw material is in described vertical roll grinder after grinding, part high-moisture raw material can stick in vertical roll grinder, easily cause Raw Meal Roller Mill not thorough, and load reduces, after material bearing disc and material scraping plate are set, the raw material adhered to are scraped by material scraping plate, be delivered to mill tail elevator again, can improve roller mill and discharging efficiency by material bearing disc after being collected from discharging opening.
Raw material preparation system and technique are dried in a kind of vertical roller grinder bypass classification provided by the present invention, bypass separation is carried out by the grinding in vertical roller grinding system, oven dry, classification and each function of mass transport, give full play to the service behaviour of each unit in system, improve the operating efficiency of each unit, be convenient to reasonable adjusting and control system technological parameter, reach system volume increase, energy-saving and cost-reducing object.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figure 1, a kind of vertical roller grinder bypass classification dry raw material preparation system, comprise vertical roll grinder 2, raw material elevator 1, mill tail elevator 3, drying plant 4, siccative elevator 5, circular centrifugal ventilation blower 10, cyclone collector 9 and meal air conveyer flume 8, described raw material elevator 1 discharging opening connects described vertical roll grinder 2 charging aperture, described vertical roll grinder 2 discharging opening connects described mill tail elevator 3 charging aperture, described mill tail elevator 3 discharging opening connects described drying plant 4 charging aperture, described drying plant 4 discharging opening connects described siccative elevator 5 charging aperture, described siccative elevator 5 discharging opening connects the air inlet of described V-type powder concentrator 6, the air outlet of described V-type powder concentrator 6 connects vortex classifier 7 air inlet, described vortex classifier 7 air outlet connects the air inlet of cyclone separator 9, the air outlet of described cyclone separator 9 connects the air inlet of circular centrifugal ventilation blower 10, the described air outlet of circular centrifugal ventilation blower 10 is connected with the air inlet of tower drier, the air outlet of described tower drier connects the air inlet of V-type powder concentrator 6, the meal discharging opening of described vortex classifier 7 connects the charging aperture of meal air conveyer flume 8, the discharging opening of meal air conveyer flume 8 connects the charging aperture of vertical roller grinder 2, described cyclone collector 9 discharging opening connects finished product raw material air flume 11 and carries, enter warehouse for finished product.
Described drying plant 4 is preferably as vertical drying raw meal machine.
In described vertical roll grinder 2, homogenizing device is set.
Raw material preparation technology is dried in a kind of vertical roller grinder bypass classification, comprises following steps:
One, grinding: described raw material elevator 1 transferring raw material is to described vertical roll grinder 2, and described vertical roll grinder 2 carries out raw material grinding;
Two, dry: the raw material after grinding is delivered to described vertical drying raw meal machine through described mill tail elevator 3 and carries out drying materials;
Three, classification: the raw material after oven dry is delivered to described V-type powder concentrator 6 through described siccative elevator 5, described V-type powder concentrator 6 carries out material cake and breaks up and first classification, then is delivered to described vortex classifier 7 and carries out finished product classification;
Four, put in storage: after classification meal through described meal air conveyer flume 8 be transmitted back to described vertical roll grinder 2 carry out continuations grind, fine powder is separated by cyclone collector 9 material gas, and the charging aperture conveying finished product raw material of the discharging opening connection finished product raw material air flume 11 of cyclone collector 9 enter warehouse for finished product.
As a kind of preferred embodiment of the present invention, in described vertical roll grinder 2, material bearing disc and material scraping plate are set.
Raw material is in described vertical roll grinder 2 after grinding, part raw material can stick in vertical roll grinder 2, easily cause Raw Meal Roller Mill not thorough, and load reduces, after material bearing disc and material scraping plate are set, the raw material adhered to are scraped by material scraping plate, be delivered to mill tail elevator 3 again, can improve roller mill and discharging efficiency by material bearing disc after being collected from discharging opening.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (7)
1. raw material preparation system is dried in a vertical roller grinder bypass classification, comprise vertical roll grinder (2), it is characterized in that: also comprise raw material elevator (1), mill tail elevator (3), drying plant (4), siccative elevator (5), circular centrifugal ventilation blower (10), cyclone collector (9) and meal air conveyer flume (8), described raw material elevator (1) discharging opening connects described vertical roll grinder (2) charging aperture, described vertical roll grinder (2) discharging opening connects described mill tail elevator (3) charging aperture, described mill tail elevator (3) discharging opening connects described drying plant (4) charging aperture, described drying plant (4) discharging opening connects described siccative elevator (5) charging aperture, described siccative elevator (5) discharging opening connects bypass classifying equipoment charging aperture, described bypass classifying equipoment discharging opening connects described cyclone collector (9) air inlet, described cyclone collector (9) air outlet connects circular centrifugal ventilation blower (10) air inlet, described cyclone collector (9) discharging opening connects finished product raw material air flume (11) and carries, described meal air conveyer flume (8) is connected with under the hopper of described bypass classifying equipoment, described meal air conveyer flume connects described vertical roll grinder (2).
2. raw material preparation system is dried in a kind of vertical roller grinder bypass classification as claimed in claim 1, it is characterized in that: described drying plant (4) is vertical drying raw meal machine.
3. raw material preparation system is dried in a kind of vertical roller grinder bypass classification as claimed in claim 1, it is characterized in that: described bypass classifying equipoment is V-type powder concentrator (6) and vortex classifier (7), the air outlet of described V-type powder concentrator (6) connects the air inlet of described vortex classifier (7).
4. raw material preparation system is dried in a kind of vertical roller grinder bypass classification as claimed in claim 1, it is characterized in that: described vertical roll grinder arranges homogenizing device in (2).
5. a raw material preparation technology is dried in vertical roller grinder bypass classification, it is characterized in that: comprise following steps:
One, grinding: described raw material elevator (1) transferring raw material is to described vertical roll grinder (2), and described vertical roll grinder (2) carries out raw material grinding;
Two, dry: the raw material after grinding is delivered to described drying plant (4) through described mill tail elevator (3) and carries out drying materials;
Three, classification: the raw material after oven dry is delivered to described V-type powder concentrator (6) through described siccative elevator (5), described V-type powder concentrator (6) is carried out material cake and is broken up and first classification, then is delivered to described vortex classifier (7) and carries out finished product classification;
Four, put in storage: after classification meal through described meal air conveyer flume (8) be transmitted back to described vertical roll grinder (2) carry out continuations grind, fine powder is separated by cyclone collector (9) material gas, described cyclone collector (9) connects circular centrifugal ventilation blower (10), and the discharging opening of cyclone collector (9) connects finished product raw material air flume (11) conveying finished product raw material and enters warehouse for finished product.
6. raw material preparation technology is dried in a kind of vertical roller grinder bypass classification as claimed in claim 5, it is characterized in that: described vertical roll grinder arranges material bearing disc and material scraping plate in (2).
7. raw material preparation technology is dried in a kind of vertical roller grinder bypass classification as claimed in claim 6, it is characterized in that: raw material is in described vertical roll grinder (2) after grinding, after being scraped by described material scraping plate, again by described mill tail elevator (3) conveying after being collected by described material bearing disc.
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| CN201510494190.1A CN105080690B (en) | 2015-08-12 | 2015-08-12 | A kind of vertical roller grinder bypass classification drying raw material preparation system and technique |
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| CN201510494190.1A CN105080690B (en) | 2015-08-12 | 2015-08-12 | A kind of vertical roller grinder bypass classification drying raw material preparation system and technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105396678A (en) * | 2015-12-04 | 2016-03-16 | 桂林晟兴机械制造有限公司 | External circulation drying and milling machine |
| CN108927275A (en) * | 2018-08-13 | 2018-12-04 | 南京凯盛国际工程有限公司 | Combined type cement grinding system and method suitable for high moisture content material |
| CN109954554A (en) * | 2017-12-25 | 2019-07-02 | 江苏天元金属粉末有限公司 | The high activity superfine spherical aluminium powder and its hierarchy system of controllable oxidization shell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105396678A (en) * | 2015-12-04 | 2016-03-16 | 桂林晟兴机械制造有限公司 | External circulation drying and milling machine |
| CN109954554A (en) * | 2017-12-25 | 2019-07-02 | 江苏天元金属粉末有限公司 | The high activity superfine spherical aluminium powder and its hierarchy system of controllable oxidization shell |
| CN108927275A (en) * | 2018-08-13 | 2018-12-04 | 南京凯盛国际工程有限公司 | Combined type cement grinding system and method suitable for high moisture content material |
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| CN105080690B (en) | 2018-06-08 |
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