CN204661559U - From screening limeslaker - Google Patents

Abstract

The utility model discloses from sieving limeslaker, comprise housing, an inner chamber is provided with in housing, the cross section of inner chamber is the figure be made up of with the rectangle being positioned at upper end the semicircle being positioned at lower end, is provided with a screw rod, is provided with opening for feed above one end of inner chamber in inner chamber, the below of the other end is provided with discharge port, inner chamber is gastrovascular cavity near one end of opening for feed, and be cooling chamber near one end of discharge port, cooling chamber is wrapped with one deck cooling layer.The beneficial effects of the utility model are: this device arranges digestion section and cooling section, lime after having digested is cooled, so as not to the corrosion of high-temperature lime to travelling belt, and give out the water vapour of corrosive effect, and lime cools the temperature of distributing after cold water absorbs, for gastrovascular cavity, make temperature Rate in gastrovascular cavity reach high digestion temperature, save energy.

Description

From screening limeslaker

Technical field

The utility model relates to lime slaking field, particularly relates to a kind of from sieving limeslaker.

Background technology

Slaked lime is in the effect in sintered material workshop: the development of making rapid progress along with blast-furnace technique, blast furnace constantly proposes higher requirement to sintering technology and throughput, the sintering technology making to stagnate for many years not feels unable to do what one wishes deeply, in recent years, industry development is swift and violent, makes sintering insurmountable problem for many years: sinter pelletizing.Sterilizing system is joined with regard to existing unslaked lime, do following analysis: 1. the activity degree of too low first, the general lime of digestibility is about 300, the time being namely warmed up to about 60 degree from water spray to lime is roughly that released vapour started digestion about 3-4 minute ability, hot steam and dust release is not had to need 8-9 minute completely Deng digestion, namely unslaked lime probably needs 8-9 minute from digestion water distribution to the complete whole process of digestion, and the specific surface area of slaked lime is larger, production rate and the stability of compound bead more can be improved.The second, common digestive organ to the digestion time of unslaked lime less than one minute, just serve the object of drenching, do not start reaction and be just pushed out cabin, be transported to primary mixer, do not digest unslaked lime completely to mix together with adding water in mixing machine again with other raw material (comprising compound, fuel, cold and hot anti-ore deposit), the unslaked lime digested is not had to digest further, thus make the bead made cause the destruction of bead because of quicklime slaking fever expansion, cause dry wet uneven, mixing of materials weak effect, have impact on pelletizing effect greatly.Thus the stability of the ventilation property that have impact in sintering process and agglomerate, in agglomerate, white point is more, and caking rate is low, causes that anti-ore deposit rate is higher causes degradation unfavorable factor under Sintering Operation Index.The main component of unslaked lime is CaO, reacts generate Ca(OH with water) 2, expand and release heat, highly beneficial to improving compound system.So unslaked lime should digest in advance.2. seriously polluted, without professional and complete dust removal installation humidifier to the digestion time of unslaked lime less than one minute, digestion time is too short, cause digestibility too low, most unslaked lime just will can complete digestion on batching belt conveyor, cause a large amount of hot steams and dust to be dispersed in batching on-the-spot, cause on-site steam and dust pollution very serious.And the dust removal installation that humidifier is imperfect, cause the Severe blockage that batching transport pipe is regular, increase the labour intensity of field personnel, reduce operating rate.Because the hot steam given out and dust are alkaline matters, not only seriously pollute site environment, also can create serious corrosion to on-the-spot miscellaneous equipment, the overall operation rate of equipment is reduced, and failure rate increases.The calcium oxide (CaO) and the calcium hydroxide (Ca (OH) 2) that are dispersed into scene also can cause serious harm to the healthy of site operation personnel.3. the insufficient meeting of the digestion of unslaked lime directly affects pelletizing granulation stability and the production rate of agglomerate, if the thermal expansion that produces because of lime slaking of the spheroid after the insufficient meeting of lime slaking causes pelletizing and bursting, thus affects the seed output and quality of agglomerate.

Utility model content

The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, providing a kind of from sieving limeslaker, solving existing limeslaker digestive efficiency low, polluting serious defect.

The purpose of this utility model is achieved through the following technical solutions: certainly sieve limeslaker, comprise housing, an inner chamber is provided with in housing, the cross section of inner chamber is the figure be made up of with the rectangle being positioned at upper end the semicircle being positioned at lower end, a screw rod is provided with in inner chamber, described screw rod diameter and semicircle diametric fit, it comprises rotating shaft and helical-blade, rotating shaft is also provided with the multiple lugs consistent with its bearing of trend, screw rod is rotated by the driven by motor of outer end, opening for feed is provided with above one end of inner chamber, the below of the other end is provided with discharge port, inner chamber is gastrovascular cavity near one end of opening for feed, one end of close discharge port is cooling chamber, the head clearance of gastrovascular cavity is provided with water-jet, the lower surface of gastrovascular cavity is provided with well heater, the position that the top of gastrovascular cavity does not arrange water-jet is densely covered with aperture, these apertures are all communicated to a fly-ash separator, cooling chamber is wrapped with one deck cooling layer, cooling layer upper end sets out water hole, lower end arranges prosopyle, described water-jet comprises water pump and spray header, the water-in of water pump is communicated to a water tank, its water outlet communication channel spray header, namely spray header is arranged on the end face of inner chamber, it is just to the screw rod of below, the posticum of cooling chamber is communicated to water tank, screen cloth is provided with in described discharge port, inner chamber is provided with a slag-drip opening in the end near discharge port, slag-drip opening is successively through transh pump, pulverizer communication channel opening for feed.

In this device, the diameter of screw rod is consistent with the half slot diameter of inner chamber lower end, and above inner chamber, be a rectangle structure, when such screw rod rotates, lime in inner chamber can be moved by screw rod band trend transmission direction front, the lime entered at opening for feed can slowly be driven to discharge port, be introduced into gastrovascular cavity, water-jet interval is arranged, namely start first water-jet sprinkling once to add water to lime, then lime is driven transmission forward by screw rod, also there will be and stir, mixing, reveal and superincumbently occur again not by the lime added water, second water-jet can spray once again, the like, lime is constantly stirred sprinkling, also complete transmission, the digestible degree of lime is not only made to increase, also make lime in transmission, be in a closed space, pollution can not be formed to external world, then most of Wingdales of screw rod shiny surface are in this way pushed forward, this device arranges lug in rotating shaft, lime is stirred by lug, lime is more easily stirred, strengthen digestible degree, the well heater be heated by setting and lower surface of lime, the below of gastrovascular cavity is covered with having heaters, constantly lime is heated, the temperature making the temperature Rate of lime and water arrive them fully to react, thus enter the stage of rapid digestion, but this reaction also can produce heat, a large amount of steam will be given out, also with lime in steam, from discharge port, opening for feed distributes and can have influence on outside atmosphere, so be provided with fly-ash separator, fly-ash separator is from the continuous suction steam of aperture, the vapor evolution of band lime is seldom had to go out, protect outside device and staff, the structure of water-jet is exactly by the water in water pump sucking-off water tank, after spray header, be sprayed onto on the lime of below.

The cooling chamber peripheral of this device is enclosed with one deck cooling layer, lime is through gastrovascular cavity, after having digested, temperature is higher, if directly discharge cavity, also have water vapour to come out, and with lime, contaminate environment, so lime can enter cooling chamber, in cooling layer, prosopyle, lower end connects outside pipeline, cold water is passed into cooling layer through prosopyle, lime is cooled, then water tank is entered through posticum, for gastrovascular cavity supplies water, so not only lime is cooled, or heat is recycled, the water-band of the spray header ejection being has temperature, accelerate heats, accelerate digestion process.

In digestive process, not all unslaked lime all has with water and mixes, have part lime not digest successfully, so this device arranges screen cloth in discharge outlet, namely milk of lime flow out from sieve aperture, and the macrobead unslaked lime do not digested namely from slag-drip opening out, through transh pump sucking-off, enter after pulverizing in pulverizer, be transported to opening for feed, digest again, ensure that the quality of discharging.

Further, the blast inlet of above-mentioned fly-ash separator is communicated to aperture, its air outlet is through the below of pipeline communication to water tank, the water vapour that such fly-ash separator inspiration contains lime comes back in water tank again, lime is also water-soluble, then be sprayed on pretreated lime, not only make moisture reclaim and use, also do not waste lime.

Further, the upper end of above-mentioned water tank is provided with an air outlet, because fly-ash separator passes into a lot of air in water tank, this air outlet is just for venting.

Further, above-mentioned lug axle center is around the shaft circumferentially evenly distributed, and the length of lug is preferably the same with rotating shaft, and such lime moves and all stirred on the way, makes its digestible degree higher.

Further, above-mentioned pulverizer comprises shell, arranges crushing knife in the enclosure, arranges housing outward end, and drive the pulverizing motor that crushing knife rotates, shell upper end arranges import, and lower end arranges outlet.Because pulverizing can be circulated, so adopt very simple pulverizer, reduce costs.

The beneficial effects of the utility model are: lime is by a screw rod transmission, constantly sprinkle water in transport process and stir, lime and water is made to react very fast and complete, but also be provided with well heater, lime and water are reached fast highly react, i.e. rapid digestion process, the whole reaction process of this device is 3-4 minute, lime has digested, substantially increase working efficiency, this device arranges digestion section and cooling section, lime after having digested is cooled, so as not to the corrosion of high-temperature lime to travelling belt, and give out the water vapour of corrosive effect, and lime cools the temperature of distributing after cold water absorbs, for gastrovascular cavity, temperature Rate in gastrovascular cavity is made to reach high digestion temperature, save energy, screened by screen cloth, ensureing that discharging is for digesting milk of lime completely, there is no the lime digested then through transh pump sucking-off, entering pulverizer and smash, again enter inner chamber from opening for feed and carry out digestion step.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms a application's part, does not form the restriction to the utility model embodiment.In the accompanying drawings:

Fig. 1 is the structural representation from a screening limeslaker specific embodiment described in the utility model;

Fig. 2 is the sectional view along A-A direction in housing shown in Fig. 1;

Fig. 3 is the sectional view along B-B direction in housing shown in Fig. 1;

Fig. 4 is the local structure schematic diagram of a screw rod specific embodiment in screening limeslaker described in the utility model;

Fig. 5 is the structural representation of a pulverizer specific embodiment in screening limeslaker described in the utility model.

Mark and corresponding component title in accompanying drawing: 1, housing, 2, inner chamber, 3, screw rod, 4, water-jet, 5, well heater, 6, fly-ash separator, 7, transh pump, 8, pulverizer, 101, opening for feed, 102, discharge port, 103, screen cloth, 104, slag-drip opening, 201, semicircle, 202, rectangle, 203, gastrovascular cavity, 204, cooling chamber, 205, cooling layer, 206, posticum, 207, prosopyle, 208, aperture, 301, rotating shaft, 302, helical-blade, 303, lug, 401, water pump, 402, spray header, 403, water tank, 801, shell, 802, crushing knife.

Embodiment

Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following examples:

Embodiment 1

As shown in Figures 1 to 5, from screening limeslaker, comprise housing 1, an inner chamber 2 is provided with in housing 1, the cross section of inner chamber 2 is the figure be made up of with the rectangle 202 being positioned at upper end the semicircle 201 being positioned at lower end, a screw rod 3 is provided with in inner chamber 2, described screw rod 3 diameter and semicircle 201 diametric fit, it comprises rotating shaft 301 and helical-blade 302, rotating shaft 301 is also provided with the multiple lugs 303 consistent with its bearing of trend, screw rod 3 is rotated by the driven by motor of outer end, opening for feed 101 is provided with above one end of inner chamber 2, the below of the other end is provided with discharge port 102, inner chamber 2 is gastrovascular cavity 203 near one end of opening for feed 101, one end of close discharge port 102 is cooling chamber 204, the head clearance of gastrovascular cavity 203 is provided with water-jet 4, the lower surface of gastrovascular cavity 203 is provided with well heater 5, the position that the top of gastrovascular cavity 203 does not arrange water-jet 4 is densely covered with aperture 208, these apertures 208 are all communicated to a fly-ash separator 6, cooling chamber 204 is wrapped with one deck cooling layer 205, cooling layer 205 upper end sets out water hole 206, lower end arranges prosopyle 207, described water-jet 4 comprises water pump 401 and spray header 402, the water-in of water pump 401 is communicated to a water tank 403, its water outlet communication channel spray header 402, namely spray header 402 is arranged on the end face of inner chamber 2, it is just to the screw rod 3 of below, the posticum 206 of cooling chamber 204 is communicated to water tank 403, screen cloth 103 is provided with in described discharge port 102, inner chamber 2 is provided with a slag-drip opening 104 in the end near discharge port 102, slag-drip opening 104 is successively through transh pump 7, pulverizer 8 communication channel opening for feed 101.

In this device, the diameter of screw rod 3 is consistent with the half slot diameter of inner chamber 2 lower end, the lower end of inner chamber 2 cross section is semicircle 201, namely be a half slot below inner chamber 2, upper end is a rectangular space, it is rectangle 202 structure above inner chamber 2, when such screw rod 3 rotates, lime in inner chamber 2 can be with trend transmission direction front to move by screw rod 3, this is because lime is certain in helical-blade 302 interval of screw rod 3, promoted forward by helical-blade 302, the lime entered at opening for feed 102 can slowly be driven to discharge port 102, be introduced into gastrovascular cavity 203, water-jet 4 interval is arranged, namely start first water-jet 4 to spray and once add water to lime, then lime is driven transmission forward by screw rod 3, also there will be and stir, mixing, reveal and superincumbently occur again not by the lime added water, second water-jet 4 can spray once again, the like, lime is constantly stirred sprinkling, also complete transmission, the digestible degree of lime is not only made to increase, also make lime in transmission, be in a closed space, pollution can not be formed to external world, then most of Wingdales of screw rod 3 shiny surface are in this way pushed forward, this device arranges lug 303 in rotating shaft 301, lime is stirred by lug 303, lime is more easily stirred, strengthen digestible degree, the well heater be heated by setting and lower surface of lime, the below of gastrovascular cavity 203 is covered with having heaters 5, constantly lime is heated, the temperature making the temperature Rate of lime and water arrive them fully to react, thus enter the stage of rapid digestion, but this reaction also can produce heat, a large amount of steam will be given out, also with lime in steam, from discharge port, opening for feed distributes and can have influence on outside atmosphere, so be provided with fly-ash separator 6, fly-ash separator 6 is from the continuous suction steam of aperture 208, the vapor evolution of band lime is seldom had to go out, protect outside device and staff, the structure of water-jet 4 is exactly by the water in water pump 401 sucking-off water tank 403, after spray header 402, be sprayed onto on the lime of below.Fly-ash separator 6 adopts suction cleaner.

Cooling chamber 204 peripheral of this device is enclosed with one deck cooling layer 205, lime is through gastrovascular cavity 203, after having digested, temperature is higher, if directly discharge cavity, also have water vapour to come out, and with lime, contaminate environment, so lime can enter cooling chamber 204, in cooling layer 205, prosopyle, lower end 207 connects outside pipeline, cold water is passed into cooling layer 205 through prosopyle 207, lime is cooled, then water tank 403 is entered through posticum 206, for gastrovascular cavity 203 supplies water, so not only lime is cooled, or heat is recycled, the water-band that the spray header 402 being sprays has temperature, accelerate heats, accelerate digestion process.

In digestive process, not all unslaked lime all has with water and mixes, have part lime not digest successfully, so this device arranges screen cloth 103 at discharge port 102 place, namely milk of lime flow out from sieve aperture, and the macrobead unslaked lime do not digested namely from slag-drip opening 104 out, through transh pump 7 sucking-off, enter after pulverizing in pulverizer 8, be transported to opening for feed 101, digest again, ensure that the quality of discharging.

In this device, the blast inlet of above-mentioned fly-ash separator 6 is communicated to aperture 203, its air outlet is through the below of pipeline communication to water tank 403, the water vapour that the inspiration of such fly-ash separator 6 contains lime comes back in water tank 403 again, lime is also water-soluble, then be sprayed on pretreated lime, not only make moisture reclaim and use, also do not waste lime.

In this device, the upper end of above-mentioned water tank 403 is provided with an air outlet, because fly-ash separator 6 passes into a lot of air in water tank 403, this air outlet is just for venting.

In this device, above-mentioned lug 303 around the shaft 301 axle center circumferentially evenly distributed, the length of lug 303 is preferably the same with rotating shaft, and such lime moves and all stirred on the way, makes its digestible degree higher.

Further, above-mentioned pulverizer 8 comprises shell 801, is arranged on the crushing knife 802 in shell 801, arranges shell 801 outer end, and drive the pulverizing motor that crushing knife 802 rotates, shell 801 upper end arranges import, and lower end arranges outlet.Because pulverizing can be circulated, so adopt very simple pulverizer, reduce costs.

Above content is the further description done the utility model in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other embodiments drawn under the technical solution of the utility model, all should be included in protection domain of the present utility model.

Claims (5)

1. from sieving limeslaker, it is characterized in that: comprise housing (1), an inner chamber (2) is provided with in housing (1), the cross section of inner chamber (2) is the figure be made up of the semicircle being positioned at lower end (201) and the rectangle (202) that is positioned at upper end, a screw rod (3) is provided with in inner chamber (2), described screw rod (3) diameter and semicircle (201) diametric fit, it comprises rotating shaft (301) and helical-blade (302), rotating shaft (301) is also provided with the multiple lugs (303) consistent with its bearing of trend, screw rod (3) is rotated by the driven by motor of outer end, opening for feed (101) is provided with above one end of inner chamber (2), the below of the other end is provided with discharge port (102), inner chamber (2) is gastrovascular cavity (203) near one end of opening for feed (101), one end of close discharge port (102) is cooling chamber (304), the head clearance of gastrovascular cavity (203) is provided with water-jet (4), the lower surface of gastrovascular cavity (203) is provided with well heater (5), the position that the top of gastrovascular cavity (203) does not arrange water-jet (4) is densely covered with aperture (208), these apertures (208) are all communicated to a fly-ash separator (6), cooling chamber (204) is wrapped with one deck cooling layer (205), cooling layer (205) upper end sets out water hole (206), lower end arranges prosopyle (207), described water-jet (4) comprises water pump (401) and spray header (402), the water-in of water pump (401) is communicated to a water tank (403), its water outlet communication channel spray header (402), spray header (402) is namely arranged on the end face of inner chamber (2), it is just to the screw rod (3) of below, the posticum (206) of cooling chamber (204) is communicated to water tank (403), screen cloth (103) is provided with in described discharge port (102), inner chamber (2) is provided with a slag-drip opening (104) in the end near discharge port (102), slag-drip opening (104) is successively through transh pump (7), pulverizer (8) communication channel opening for feed (101).

2. according to claim 1 from sieving limeslaker, it is characterized in that: the blast inlet communication channel aperture (208) of described fly-ash separator (6), its air outlet is through the below of pipeline communication to water tank (403).

3. according to claim 2 from sieving limeslaker, it is characterized in that: the upper end of described water tank (403) is provided with an air outlet.

4. according to claim 1 from sieving limeslaker, it is characterized in that: the axle center of described lug (303) (301) is around the shaft circumferentially evenly distributed.

5. according to claim 1 from sieving limeslaker, it is characterized in that: described pulverizer (8) comprises shell (801), be arranged on the crushing knife (802) in shell (801), shell (801) outer end is set, drive the pulverizing motor that crushing knife (802) rotates, shell (801) upper end arranges import, and lower end arranges outlet.