CN106145710A - From screening limeslaker - Google Patents

Abstract

The invention discloses: from screening limeslaker, housing, it is provided with an inner chamber in housing, the cross section of inner chamber is the figure being made up of the semicircle being positioned at lower end and the rectangle being positioned at upper end, is provided with a screw rod in inner chamber, and one end of inner chamber is provided above charging aperture, the lower section of the other end is provided with discharging opening, inner chamber is gastrovascular cavity near one end of charging aperture, is cooling chamber near one end of discharging opening, and cooling chamber is wrapped with one layer of cooling layer.The invention has the beneficial effects as follows: this device arranges digestion section and cooling section, lime after having digested is cooled down, so as not to the corrosion to conveyer belt for the high-temperature lime, and give out the steam of corrosive effect, and the temperature that lime cooling distributes is after cold water absorption, for gastrovascular cavity so that in gastrovascular cavity, temperature Rate reaches high digestion temperature, saves energy.

Description

From screening limeslaker

Technical field

The present invention relates to lime slaking field, especially relate to a kind of from screening limeslaker.

Background technology

Calcium hydroxide is in the effect in sintered material workshop: the development maked rapid progress with blast-furnace technique, blast furnace constantly proposes higher requirement to sintering technology and production capacity, the not front sintering technology that makes to stagnate for many years feels unable to do what one wishes deeply, in recent years, industry development is swift and violent so that sinter insurmountable for many years problem: sinter pelletizing.Sterilizing system is joined with regard to existing quick lime, make following analysis: 1. the activity degree of too low firstth, the general lime of digestibility is about 300, it is namely about about 3-4 minute just starting release steam from the time being warmed up to about 60 degree of spraying water to lime and start digestion, vapours and dust release is not had to need 8-9 minute completely Deng digestion, namely quick lime probably needs 8-9 minute from digestion water distribution to the completely whole process of digestion, and the specific surface area of calcium hydroxide is bigger, production rate and the stability of compound bead more can be improved. Secondth, common digester to the digestion time of quick lime less than one minute, simply serve the purpose drenched, do not start reaction and be pushed out cabin, transport is to primary mixer, do not digest quick lime completely to mix together with adding water in mixer again with other raw materials (including compound, fuel, cold and hot anti-ore deposit), the quick lime having digested is not had to digest further, so that the bead made causes the destruction of bead because of quicklime slaking fever expansion, cause dry and wet uneven, material mixed effect difference, leverages pelletizing effect.Thus have impact on the stability of the gas permeability in sintering process and sintering deposit, in sintering deposit, 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 quick lime is CaO, reacts generation Ca(OH with water) 2, expand and release heat, highly beneficial to improving compound system.So quick lime should digest in advance.2. seriously polluted, without professional and complete cleaner humidifier to the digestion time of quick lime less than one minute, digestion time is too short, cause digestibility too low, most quick lime just can complete digestion on dispensing belt conveyor, cause substantial amounts of vapours and dust to be dispersed in dispensing on-the-spot, cause on-site steam and dust pollution extremely serious.And the cleaner that humidifier is not perfect, cause the Severe blockage that dispensing conveyance conduit is regular, increase the labour intensity of field personnel, reduce operating rate.Because the vapours giving out and dust are alkaline matters, not only serious polluting site environment, also creating serious corrosion to on-the-spot miscellaneous equipment, make the overall operation rate of equipment reduce, fault rate increases.It is dispersed into the calcium oxide (CaO) at scene and the healthy of site operation personnel also can be caused serious harm by calcium hydroxide (Ca (OH) 2).3. the insufficient meeting of digestion of quick lime directly affects pelletizing granulation stability and the production rate of sintering deposit, if the insufficient meeting of lime slaking cause pelletizing after the thermal expansion that produces because of lime slaking of spheroid and burst, thus affect yield and the quality of sintering deposit.

Content of the invention

It is an object of the invention to overcome the shortcoming and defect of above-mentioned prior art, provide a kind of from screening limeslaker, solve existing limeslaker digestive efficiency low, pollute serious defect.

nullThe purpose of the present invention is achieved through the following technical solutions: from screening limeslaker，Including housing，It is provided with an inner chamber in housing，The cross section of inner chamber is the figure being made up of the semicircle being positioned at lower end and the rectangle being positioned at upper end，It is provided with a screw rod in inner chamber，Described screw rod diameter and semicircle diametric fit，It includes rotating shaft and helical-blade，It is additionally provided with the multiple lugs consistent with its bearing of trend in rotating shaft，Screw rod is rotated by the driven by motor of outer end，One end of inner chamber is provided above charging aperture，The lower section of the other end is provided with discharging opening，Inner chamber is gastrovascular cavity near one end of charging aperture，It is cooling chamber near one end of discharging opening，The head clearance of gastrovascular cavity is provided with water jet，The lower surface of gastrovascular cavity is provided with heater，The position that the top of gastrovascular cavity is not provided with water jet is densely covered with aperture，These apertures are all communicated to a deduster，Cooling chamber is wrapped with one layer of cooling layer，Cooling layer upper end arranges apopore，Lower end arranges inlet opening，Described water jet includes water pump and spray head，The water inlet of water pump is communicated to a water tank，Its delivery port communication channel spray head，Spray head is i.e. arranged on the end face of inner chamber，Its screw rod just to lower section，The apopore of cooling chamber is communicated to water tank，Described discharging opening is provided with screen cloth，Inner chamber is provided with a slag-drip opening in the end near discharging opening，Slag-drip opening is successively through transh pump、Grinder communication channel charging aperture.

nullIn this device，The diameter of screw rod is consistent with the half slot diameter of inner chamber lower end，And inner chamber is arranged above a rectangle structure，When so screw rod rotates，Lime in inner chamber can be moved by screw rod band trend transmission direction front，The lime entering at charging aperture can slowly be driven to discharging opening，It is introduced into gastrovascular cavity，Water jet interval is arranged，I.e. start first water jet sprinkling once to add water lime，Then lime is driven transmission forward by screw rod，There is also and stir、Mixing，Reveal the superincumbent lime occurring again not added water，Second water jet can spray once again，The like，Lime is constantly stirred sprinkling，Also complete transmission，The digestible degree not only making lime is increased，Lime is also made to be in a space closed in transmission，Pollution will not be formed to external world，Then most of lime stones of screw rod shiny surface in this way are promoted forward，This device arranges lug in rotating shaft，Stir lime by lug，Lime is made to be more easy to be stirred，Strengthen digestible degree，The heating of lime is by arranging and the heater on lower surface，The lower section of gastrovascular cavity is covered with having heaters，Constantly lime is heated，Lime is made to reach, with the temperature Rate of water, the temperature that they fully react，Stage hence into rapid digestion，But this reaction also can produce heat，Substantial amounts of steam will be given out，Also with lime in steam，From discharging opening、Charging aperture distributes and influences whether external environment condition，So being provided with deduster，Deduster continuous suction steam at aperture，The vapor evolution with lime is seldom had to go out，Protect device and the staff of outside，The structure of water jet is through the water in Pump Suction water tank，After spray head，It is sprayed onto on the lime of lower section.

The cooling chamber peripheral of this device is enclosed with one layer of cooling layer, lime is through gastrovascular cavity, after digestion completes, temperature is higher, if being expelled directly out cavity, also have steam to come out, and with lime, pollute environment, so lime can enter cooling chamber, in cooling layer, inlet opening, lower end connects the pipeline of outside, it is passed through cold water through inlet opening to cooling layer, lime is cooled down, then water tank is entered through apopore, supply water for gastrovascular cavity, so not only lime is cooled down, or use is circulated to heat, the water of the spray head ejection being is with temperature, accelerate heating effect, accelerate digestion process.

In digestion process, not all quick lime all has with water and mixes, having part lime not digest successfully, so this device arranges screen cloth in discharge outlet, milk of lime i.e. flows out at sieve aperture, without the bulky grain quick lime that digested i.e. from slag-drip opening out, through transh pump sucking-off, enter after grinder is pulverized, be transported to charging aperture, digest again, it is ensured that the quality of discharging.

Further, the air inlet of above-mentioned deduster is communicated to aperture, its air outlet is through the lower section of pipeline communication to water tank, the steam that so deduster inspiration contains lime comes back in water tank again, lime also is soluble in water, then it is sprayed on the lime of pretreatment, not only make moisture reclaim and use, also do not waste lime.

Further, the upper end of above-mentioned water tank is provided with a gas outlet, because deduster is passed through a lot of air in water tank, this gas outlet is just used for exitting.

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

Further, above-mentioned grinder includes shell, arranges crushing knife in the enclosure, arranges housing outward end, drives the pulverizing motor that crushing knife rotates, and shell upper end arranges import, and lower end arranges outlet.Because pulverizing can be circulated, so using very simple pulverizer, reduce cost.

The invention has the beneficial effects as follows: lime passes through a screw rod transmission, constantly sprinkle water during transmitting and stir, lime and water is made to react very fast and complete, but also it is provided with heater, lime and water are rapidly achieved highly reactive, i.e. rapid digestion process, the whole course of reaction of this device is 3-4 minute, lime has digested and has completed, substantially increase operating efficiency, this device arranges digestion section and cooling section, lime after having digested is cooled down, so as not to the corrosion to conveyer belt for the high-temperature lime, and give out the steam of corrosive effect, and the temperature that lime cooling distributes is after cold water absorption, for gastrovascular cavity, in making gastrovascular cavity, temperature Rate reaches high digestion temperature, save energy；Screened by screen cloth, it is ensured that discharging, for digesting milk of lime completely, does not has the lime of digestion then through transh pump sucking-off, enters grinder and smash, again enter inner chamber from charging aperture and carry out digestion step.

Brief description

Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes the part of the application, is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:

Fig. 1 is of the present invention from the structural representation sieving one specific embodiment of limeslaker；

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

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

Fig. 4 is the partial structurtes schematic diagram of one specific embodiment of screw rod in screening limeslaker of the present invention；

Fig. 5 is the structural representation of one specific embodiment of grinder in screening limeslaker of the present invention.

Mark and corresponding parts title in accompanying drawing: 1, housing, 2, inner chamber, 3, screw rod, 4, water jet, 5, heater, 6, deduster, 7, transh pump, 8, grinder, 101, charging aperture, 102, discharging opening, 103, screen cloth, 104, slag-drip opening, 201, semicircle, 202, rectangle, 203, gastrovascular cavity, 204, cooling chamber, 205, cooling layer, 206, apopore, 207, inlet opening, 208, aperture, 301, rotating shaft, 302, helical-blade, 303, lug, 401, water pump, 402, spray head, 403, water tank, 801, shell, 802, crushing knife.

Detailed description of the invention

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

Embodiment 1

nullAs shown in Figures 1 to 5，From screening limeslaker，Including housing 1，It is provided with an inner chamber 2 in housing 1，The cross section of inner chamber 2 is by the semicircle 201 being positioned at lower end and to be positioned at the figure that the rectangle 202 of upper end forms，It is provided with a screw rod 3 in inner chamber 2，Described screw rod 3 diameter and semicircle 201 diametric fit，It includes rotating shaft 301 and helical-blade 302，It is additionally provided with the multiple lugs 303 consistent with its bearing of trend in rotating shaft 301，Screw rod 3 is rotated by the driven by motor of outer end，One end of inner chamber 2 is provided above charging aperture 101，The lower section of the other end is provided with discharging opening 102，Inner chamber 2 is gastrovascular cavity 203 near one end of charging aperture 101，It is cooling chamber 204 near one end of discharging opening 102，The head clearance of gastrovascular cavity 203 is provided with water jet 4，The lower surface of gastrovascular cavity 203 is provided with heater 5，The position that the top of gastrovascular cavity 203 is not provided with water jet 4 is densely covered with aperture 208，These apertures 208 are all communicated to a deduster 6，Cooling chamber 204 is wrapped with one layer of cooling layer 205，Cooling layer 205 upper end arranges apopore 206，Lower end arranges inlet opening 207，Described water jet 4 includes water pump 401 and spray head 402，The water inlet of water pump 401 is communicated to a water tank 403，Its delivery port communication channel spray head 402，Spray head 402 is i.e. arranged on the end face of inner chamber 2，Its screw rod 3 just to lower section，The apopore 206 of cooling chamber 204 is communicated to water tank 403，Described discharging opening 102 is provided with screen cloth 103，Inner chamber 2 is provided with a slag-drip opening 104 in the end near discharging opening 102，Slag-drip opening 104 is successively through transh pump 7、Grinder 8 communication channel charging aperture 101.

nullIn 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，It is i.e. a half slot below inner chamber 2，Upper end is a rectangular space，Inner chamber 2 is arranged above rectangle 202 structure，When so screw rod 3 rotates，Lime in inner chamber 2 can be carried trend transmission direction front to move by screw rod 3，This is because lime is certain in the helical-blade 302 of screw rod 3 is spaced，Promoted forward by helical-blade 302，The lime entering at charging aperture 102 can slowly be driven to discharging opening 102，It is introduced into gastrovascular cavity 203，Water jet 4 interval is arranged，I.e. start first water jet 4 to spray and once add water lime，Then lime is driven transmission forward by screw rod 3，There is also and stir、Mixing，Reveal the superincumbent lime occurring again not added water，Second water jet 4 can spray once again，The like，Lime is constantly stirred sprinkling，Also complete transmission，The digestible degree not only making lime is increased，Lime is also made to be in a space closed in transmission，Pollution will not be formed to external world，Then most of lime stones of screw rod 3 shiny surface in this way are promoted forward，This device arranges lug 303 in rotating shaft 301，Stir lime by lug 303，Lime is made to be more easy to be stirred，Strengthen digestible degree，The heating of lime is by arranging and the heater on lower surface，The lower section of gastrovascular cavity 203 is covered with having heaters 5，Constantly lime is heated，Lime is made to reach, with the temperature Rate of water, the temperature that they fully react，Stage hence into rapid digestion，But this reaction also can produce heat，Substantial amounts of steam will be given out，Also with lime in steam，From discharging opening、Charging aperture distributes and influences whether external environment condition，So being provided with deduster 6，Deduster 6 continuous suction steam at aperture 208，The vapor evolution with lime is seldom had to go out，Protect device and the staff of outside，The structure of water jet 4 is through the water in water pump 401 sucking-off water tank 403，After spray head 402，It is sprayed onto on the lime of lower section.Deduster 6 uses dust catcher.

Cooling chamber 204 peripheral of this device is enclosed with one layer of cooling layer 205, lime is through gastrovascular cavity 203, after digestion completes, temperature is higher, if being expelled directly out cavity, also have steam to come out, and with lime, pollute environment, so lime can enter cooling chamber 204, in cooling layer 205, inlet opening, lower end 207 connects the pipeline of outside, it is passed through cold water through inlet opening 207 to cooling layer 205, lime is cooled down, then water tank 403 is entered through apopore 206, supply water for gastrovascular cavity 203, so not only lime is cooled down, or use is circulated to heat, the water of spray head 402 ejection being is with temperature, accelerate heating effect, accelerate digestion process.

In digestion process, not all quick lime all has with water and mixes, having part lime not digest successfully, so this device arranges screen cloth 103 at discharging opening 102s, milk of lime i.e. flows out at sieve aperture, without the bulky grain quick lime that digested i.e. from slag-drip opening 104 out, through transh pump 7 sucking-off, enter after grinder 8 is pulverized, be transported to charging aperture 101, digest again, it is ensured that the quality of discharging.

In this device, the air inlet of above-mentioned deduster 6 is communicated to aperture 203, its air outlet is through the lower section of pipeline communication to water tank 403, the steam that so deduster 6 inspiration contains lime comes back in water tank 403 again, lime also is soluble in water, then it is sprayed on the lime of pretreatment, 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 a gas outlet, because deduster 6 is passed through a lot of air in water tank 403, this gas outlet is just used for exitting.

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

Further, above-mentioned grinder 8 includes shell 801, the crushing knife 802 being arranged in shell 801, arranges shell 801 outer end, drives the pulverizing motor that crushing knife 802 rotates, and shell 801 upper end arranges import, and lower end arranges outlet.Because pulverizing can be circulated, so using very simple pulverizer, reduce cost.

Above content is to combine the further description that the present invention is made by concrete preferred embodiment, it is impossible to assert that the detailed description of the invention of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, other embodiments of drawing under without departing from technical scheme, should be included in protection scope of the present invention.

Claims (5)

1. null1. from screening limeslaker，It is characterized in that: include housing (1)，It is provided with an inner chamber (2) in housing (1)，The cross section of inner chamber (2) is the figure being made up of the semicircle (201) being positioned at lower end and the rectangle (202) being positioned at upper end，It is provided with a screw rod (3) in inner chamber (2)，Described screw rod (3) diameter and semicircle (201) diametric fit，It includes rotating shaft (301) and helical-blade (302)，It is additionally provided with the multiple lugs (303) consistent with its bearing of trend in rotating shaft (301)，Screw rod (3) is rotated by the driven by motor of outer end，One end of inner chamber (2) is provided above charging aperture (101)，The lower section of the other end is provided with discharging opening (102)，Inner chamber (2) is gastrovascular cavity (203) near one end of charging aperture (101)，It is cooling chamber (304) near one end of discharging opening (102)，The head clearance of gastrovascular cavity (203) is provided with water jet (4)，The lower surface of gastrovascular cavity (203) is provided with heater (5)，The position that the top of gastrovascular cavity (203) is not provided with water jet (4) is densely covered with aperture (208)，These apertures (208) are all communicated to a deduster (6)，Cooling chamber (204) is wrapped with one layer of cooling layer (205)，Cooling layer (205) upper end arranges apopore (206)，Lower end arranges inlet opening (207)，Described water jet (4) includes water pump (401) and spray head (402)，The water inlet of water pump (401) is communicated to a water tank (403)，Its delivery port communication channel spray head (402)，Spray head (402) is i.e. arranged on the end face of inner chamber (2)，Its screw rod (3) just to lower section，The apopore (206) of cooling chamber (204) is communicated to water tank (403)，Described discharging opening (102) is provided with screen cloth (103)，Inner chamber (2) is provided with a slag-drip opening (104) in the end near discharging opening (102)，Slag-drip opening (104) is successively through transh pump (7)、Grinder (8) communication channel charging aperture (101).
2. 2. according to claim 1 from screening limeslaker, it is characterised in that: air inlet communication channel aperture (208) of described deduster (6), its air outlet is through the lower section of pipeline communication to water tank (403).
3. 3. according to claim 2 from screening limeslaker, it is characterised in that: the upper end of described water tank (403) is provided with a gas outlet.
4. 4. according to claim 1 from screening limeslaker, it is characterised in that: the axle center of described lug (303) (301) around the shaft is circumferentially evenly distributed.
5. 5. according to claim 1 from screening limeslaker, it is characterized in that: described grinder (8) includes shell (801), the crushing knife (802) being arranged 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.