CN110526598A - A kind of active lime calcination system and technique - Google Patents
A kind of active lime calcination system and technique Download PDFInfo
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- CN110526598A CN110526598A CN201910944477.8A CN201910944477A CN110526598A CN 110526598 A CN110526598 A CN 110526598A CN 201910944477 A CN201910944477 A CN 201910944477A CN 110526598 A CN110526598 A CN 110526598A
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- building stones
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- powder material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
Abstract
The present invention discloses a kind of active lime calcination system, including raw material cabin, calcinated powder material prepare subsystem, intermediate bin, charging subsystem, calcining subsystem, finished bin and exhaust emissions subsystem；It includes dryer, crusher, screening plant, cyclone cylinder deduster and bag filter that the calcinated powder material, which prepares subsystem,；The lime stone shipped from Shi Chang prepares to obtain the calcinated powder material for meeting calcining and requiring after subsystem carries out multi-stage crushing through the calcinated powder material；The calcinated powder material carries out the Viability lime of heating and calcining by charging subsystem feeding calcining subsystem after dedusting, and then cooling is stored in lime finished bin；The exhaust emissions subsystem is used for waste gas absorption, purification and the discharge that high-temperature calcination generates.In addition the technique using above-mentioned calcination system active lime calcination is also disclosed in the present invention, reaches and makes full use of small particle lime stone, stably produces up-to-standard, the purpose of the better quick lime of activity.
Description
Technical field
The present invention relates to a kind of active lime calcination system and techniques.
Technical background
Lime is the cementitious material that the mankind apply earliest, and main component is calcium oxide, is widely used in civil engineering neck
Domain can also be used in medicine aspect.Lime is divided into quick lime and white lime.The main component of quick lime is calcium oxide (CaO),
It is white solid, and fire resisting infusibility.White lime, also known as " calcium hydroxide " are that quick lime is reacted with water and (while being released a large amount of
Heat), or be made after absorbing the moisture in humid air, the main component of white lime is calcium hydroxide (Ca (OH) 2).Described in us
Active lime refer to quick lime, be usually the high limestone of CaO content be calcined in the limekiln of ventilation acquisition.
The production equipment of active lime calcination is mainly limekiln.By kiln type point, mainly have shaft furnace, rotary kiln, sleeve kiln,
West Germany's Wei Masite kiln, Maers Kiln (Switzerland), Fu Kasi kiln (Italy) etc..The basic principle of lime burning is: by height
Temperature Decomposition of Calcium Carbonate in lime stone at calcium oxide and carbon dioxide (while heat release), to obtain quick lime.Usual lime stone
Granularity and calcination time are directly proportional, and quick lime activity degree is inversely proportional with calcination time and calcination temperature.However, general limekiln is forged
The limestone granularity of burning, which need to be greater than 10mm, can just be used effectively, this not only limits quick lime activity degree, and cause a large amount of
Small grain size lime stone be wasted, the objective of energy-saving and environmental protection cannot be really achieved.Therefore it designs a kind of lime calcining technique and is
System, reaches and makes full use of small particle lime stone, stably produces up-to-standard, the purpose of the better quick lime of activity.
Summary of the invention
Above-mentioned existing quick lime calcine technology there are aiming at the problem that, and to achieve the above object, the present invention mentions
For a kind of active lime calcine technology and system, reach and make full use of small particle lime stone, stably produces up-to-standard, activity
The purpose of better quick lime.Specific technical solution is as follows:
The present invention first provides a kind of active lime calcination system, including raw material cabin, calcinated powder material prepare subsystem, intermediate bin,
Feed subsystem, calcining subsystem, finished bin and exhaust emissions subsystem；
It includes dryer, crusher, screening plant, cyclone cylinder deduster and bag-type dust that the calcinated powder material, which prepares subsystem,
Device；
It is stored in the raw material cabin from the lime stone that Shi Chang is shipped, first prepares the baking of subsystem when use through the calcinated powder material
Dry machine is dry, reuses the crusher and carries out coarse crushing；
Building stones after coarse crushing are screened by drier and screening plant, and the building stones greater than 15mm carry out coarse crushing again, are less than
The building stones of 15mm carry out fine crushing；
The same drying machine of building stones after fine crushing is dry and screening plant screens, and carries out fine crushing, partial size again greater than the building stones of 5mm
Building stones less than 5mm are successively stored in intermediate bin after cyclone cylinder deduster, bag filter dedusting；
Then it is Viability the building stones after dedusting to be fed from intermediate bin by calcining subsystem progress heating and calcining by charging subsystem
Lime is sent into finished bin storage after cooling；
The exhaust emissions subsystem is used for waste gas absorption, purification and the discharge that high-temperature calcination generates.
Active lime calcination system above-mentioned, the charging subsystem includes discharger, measuring belt scale, bucket lifting
Machine, air lift mud pump；Building stones in intermediate bin are drawn off by discharger, after measuring belt scale weighs, then through bucket lifting
Machine and air lift mud pump are sent into calcining subsystem.
Active lime calcination system above-mentioned, the calcining subsystem are the rotary kiln special of active lime calcination, this is specially
It is furnished with preheater and cooler with rotary kiln, the preheater is shaft preheater, and the cooler is shaft cooler.
Active lime calcination system above-mentioned, the exhaust emissions subsystem include conditioning Tower, high-temperature blower and electric precipitation,
High-temperature calcination generate tail gas by conditioning Tower absorb humidification after, then by high-temperature blower feeding electric precipitation purified after through discharging
Tower emptying.Preferably, the electric precipitation is wet cottrell.
In addition, the present invention also provides a kind of works for carrying out active lime calcination using active lime calcination system above-mentioned
Skill, including it is rapid as follows:
S1: coarse crushing building stones: the lime stone shipped from Shi Chang is taken out from raw material cabin, through crusher primary breakup after drying, is obtained
The coarse crushing building stones that partial size is less than 15mm are obtained, so as to dry and fine crushing；
S2: dry: by the primary building stones obtained in step S1 through airflow line formula dryer, drying makes its water content less than 5%,
In case fine crushing；
S3: it attritioning building stones: by the primary building stones after being dried in step S2 again through crusher crushing and screening, obtains partial size and is less than
The attritioning building stones of 5mm；
S4: the attritioning building stones obtained in step S3 dedusting: are sequentially entered into whirlwind after airflow line formula drying machine drying again
Cylinder deduster and bag filter are dusted, and remove impurity, are obtained the calcinated powder material met into furnace calcining, are stored in centre
Storehouse, it is spare；
S5: pre- firing: while preparing calcinated powder material, pre-burning is carried out to calcining kiln, makes preheating in kiln, keeps the temperature 6~10h, make
Temperature is stablized；
S6: feeding preheating: by the calcinated powder material obtained after dedusting in step S4 by being fed after metering by air lift mud pump
Preheater carries out preheating and decomposed to calcinated powder material；
S7: calcining: the calcinated powder material after preheating in step S6 is sent into rotary kiln special and continues heating and calcining, makes its whole
It decomposes and is sintered, obtain quick lime hot material；
S8: cooling discharging: the quick lime hot material that will be obtained in step S7, it is cooling by cooler, obtain active lime finished product；It is living
Property lime finished product be delivered to after cooling lime finished bin preservation.
As a preferred technical scheme, in step S1, the humidity for carrying out the lime building stones of coarse crushing is less than for water content
10%；The building stones water content of attritioning is carried out in step S less than 3%；The building stones water content being dusted in step S is less than 1%；Step S
The middle building stones preheated are 100% dry calcinated powder material.
As a preferred technical scheme, drying temperature dry in step S2 is 60~65 DEG C.
As a preferred technical scheme, the temperature that preheater preheats in step S6 is 1150~1200 DEG C；In step S7
The temperature of calcining is 1300~1350 DEG C.
As a preferred technical scheme, the high-temp waste gas that generation is calcined in step S6 and step S7 is absorbed through conditioning Tower to be increased
After wet, it is sent into after electric precipitation purification using high-temperature blower through discharge tower emptying.
The beneficial effects of the present invention are:
Present system is arranged before calcination prepares subsystem for the calcinated powder material of lime stone multi-stage crushing, is filled by crushing to reach
Divide the purpose using small particle lime stone；Cooperate corresponding calcine technology, stably produces up-to-standard, the better raw stone of activity
Ash.
Detailed description of the invention
Fig. 1 is active lime calcination system schematic diagram of the present invention；
Fig. 2 is that calcinated powder material of the invention prepares subsystem schematic diagram；
Fig. 3 is charging subsystem schematic diagram of the invention；
Fig. 4 is calcining subsystem schematic diagram of the invention；
Fig. 5 is exhaust emissions subsystem schematic diagram of the invention.
In figure: 1, raw material cabin；2, calcinated powder material prepares subsystem；2a, dryer；2b, crusher；2c, screening plant；
2d, cyclone cylinder deduster；2e, bag filter；3, intermediate bin；4, subsystem is fed；4a, discharger；4b, measuring belt scale；
4c, bucket elevator；4d, air lift mud pump；5, subsystem is calcined；5a, rotary kiln special；5b, preheater；5c, cooler；6,
Finished bin；7, exhaust emissions subsystem；7a, conditioning Tower；7b, high-temperature blower；7c, electric precipitation；7d, discharge tower.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment to skill of the invention
Art scheme is clearly and completely described.
Embodiment 1
The present embodiment is a kind of active lime calcination system, and as shown in Figures 1 to 5, including raw material cabin 1, calcinated powder material prepare son
System 2, intermediate bin 3, charging subsystem 4, calcining subsystem 5, finished bin 6 and exhaust emissions subsystem 7；The calcinated powder material
Preparing subsystem 2 includes dryer 2a, crusher 2b, screening plant 2c, cyclone cylinder deduster 2d and bag filter 2e；
It is stored in the raw material cabin 1 from the lime stone that Shi Chang is shipped, first prepares subsystem 2 through the calcinated powder material when use
Dryer 2a is dry, reuses the crusher 2b and carries out coarse crushing；Building stones after coarse crushing are dry by dryer 2a and screening fills
2c screening is set, the building stones greater than 15mm carry out coarse crushing again, carry out less than the building stones of 15mm fine crushing；Building stones after fine crushing equally pass through
Dryer 2a is dry and screening plant 2c screening, carries out again greater than the building stones of 5mm fine crushing, and building stones of the partial size less than 5mm are successively
Intermediate bin 3 is stored in after cyclone cylinder deduster 2d, bag filter 2e dedusting；Then by feeding subsystem 4 for dedusting
Building stones afterwards feed calcining subsystem 5 from intermediate bin 3 and carry out the Viability lime of heating and calcining, are sent into finished bin 6 after cooling and store；
The exhaust emissions subsystem 7 is used for waste gas absorption, purification and the discharge that high-temperature calcination generates.
Active lime calcination system described in the present embodiment, the charging subsystem 4 include discharger 4a, measuring belt scale
4b, bucket elevator 4c, air lift mud pump 4d；Building stones in intermediate bin 3 are drawn off by discharger 4a, by measuring belt scale 4b
After weighing, then it is sent into through bucket elevator 4c and air lift mud pump 4d and calcines subsystem 5.The calcining subsystem 5 is that calcining is lived
Property lime rotary kiln special 5a, rotary kiln special 5a be furnished with preheater 5b and cooler 5c, the preheater 5b be it is vertical
Preheater, the cooler 5c are shaft cooler.The exhaust emissions subsystem 7 include conditioning Tower 7a, high-temperature blower 7b and
Electric precipitation 7c, after the tail gas that high-temperature calcination generates absorbs humidification by conditioning Tower 7a, then by high-temperature blower 7b feeding electric precipitation 7c
Through discharge tower 7d emptying after being purified.Preferably, the electric precipitation 7c is wet cottrell.
Embodiment 2
The present embodiment is a kind of technique using active lime calcination system active lime calcination described in embodiment 1, including
It is rapid as follows:
S1: coarse crushing building stones: will take out from the lime stone that Shi Chang is shipped from raw material cabin 1, it is dry after through crusher 2b primary breakup,
The coarse crushing building stones that partial size is less than 15mm are obtained, so as to dry and fine crushing；The humidity for carrying out the lime building stones of coarse crushing is that water content is small
In 10%；The building stones water content of attritioning is carried out in step S3 less than 3%；The building stones water content being dusted in step S4 is less than 1%；
The building stones preheated in step S6 are 100% dry calcinated powder material.
S2: dry: by the primary building stones obtained in step S1 through airflow line formula dryer 2a, drying makes its water content
Less than 5%, in case fine crushing；Dry drying temperature is 65 DEG C.
S3: attritioning building stones: by the primary building stones after drying in step S2 again through crusher 2b crushing and screening, partial size is obtained
Attritioning building stones less than 5mm；
S4: the attritioning building stones obtained in step S3 dedusting: are sequentially entered into rotation after airflow line formula dryer 2a drying again
Air duct deduster 2d and bag filter 2e are dusted, and remove impurity, are obtained the calcinated powder material met into furnace calcining, are stored in
Intermediate bin 3, it is spare；
S5: pre- firing: while preparing calcinated powder material, pre-burning is carried out to calcining kiln, makes preheating in kiln, keeps the temperature 10h, make temperature
Stablize；
S6: feeding preheating: by the calcinated powder material obtained after dedusting in step S4 by being fed after metering by air lift mud pump 4d
Enter preheater 5b to be preheated, the temperature of preheating is 1150 DEG C, carries out preheating and decomposed to calcinated powder material.
S7: calcining: the calcinated powder material after preheating in step S6 is sent into rotary kiln special 5a and continues heating and calcining, is forged
The temperature of burning is 1300 DEG C, so that it is all decomposed and is sintered, obtains quick lime hot material；The high-temp waste gas generated is calcined through conditioning Tower
After 7a absorbs humidification, it is sent into after electric precipitation 7c purification using high-temperature blower 7b through discharge tower 7d emptying.
S8: cooling discharging: the quick lime hot material that will be obtained in step S7, it is cooling by cooler 5c, obtain active lime
Finished product；Active lime finished product is delivered to the preservation of lime finished bin 6 after cooling.
Above-described is only a preferred embodiment of the invention, is not the limit for making other forms to the present invention
System, any person skilled in the art are changed or are modified as equivalent variations possibly also with the technology contents of the disclosure above
Equivalent embodiment.But without departing from the technical solutions of the present invention, implement according to the technical essence of the invention to above
Any simple modification, equivalent variations and remodeling, still fall within the protection scope of technical solution of the present invention made by example.
Claims (10)
1. a kind of active lime calcination system, it is characterised in that: including raw material cabin (1), calcinated powder material prepare subsystem (2), in
Between storehouse (3), charging subsystem (4), calcining subsystem (5), finished bin (6) and exhaust emissions subsystem (7)；
It includes that dryer (2a), crusher (2b), screening plant (2c), cyclone cylinder remove that the calcinated powder material, which prepares subsystem (2),
Dirt device (2d) and bag filter (2e)；
It is stored in the raw material cabin (1) from the lime stone that Shi Chang is shipped, when use first prepares subsystem through the calcinated powder material
(2) dryer (2a) is dry, reuses the crusher (2b) and carries out coarse crushing；
Building stones after coarse crushing are dry by dryer (2a) and screening plant (2c) screening, the building stones greater than 15mm carry out slightly again
It is broken, it is carried out less than the building stones of 15mm fine crushing；
The same drying machine (2a) of building stones after fine crushing is dry and screening plant (2c) screening, the building stones greater than 5mm carry out again
Fine crushing, building stones of the partial size less than 5mm are successively stored in centre after cyclone cylinder deduster (2d), bag filter (2e) dedusting
Storehouse (3)；
Then the building stones after dedusting heating is carried out from intermediate bin (3) feeding calcining subsystem (5) by charging subsystem (4) to forge
It is burnt into active lime, finished bin (6) storage is sent into after cooling；
The exhaust emissions subsystem (7) is used for waste gas absorption, purification and the discharge that high-temperature calcination generates.
2. active lime calcination system according to claim 1, it is characterised in that: the charging subsystem (4) includes unloading
Glassware (4a), measuring belt scale (4b), bucket elevator (4c), air lift mud pump (4d)；Building stones in intermediate bin (3) are by unloading
Glassware (4a) is drawn off, and is sent into after measuring belt scale (4b) weighing, then through bucket elevator (4c) and air lift mud pump (4d)
It calcines subsystem (5).
3. active lime calcination system according to claim 1, it is characterised in that: the calcining subsystem (5) is calcining
The rotary kiln special (5a) of active lime, the rotary kiln special (5a) are furnished with preheater (5b) and cooler (5c), the preheating
Device (5b) is shaft preheater, and the cooler (5c) is shaft cooler.
4. active lime calcination system according to claim 1, it is characterised in that: exhaust emissions subsystem (7) packet
Conditioning Tower (7a), high-temperature blower (7b) and electric precipitation (7c) are included, the tail gas that high-temperature calcination generates is absorbed by conditioning Tower (7a) to be increased
After wet, then it is sent into after electric precipitation (7c) is purified by high-temperature blower (7b) and is emptied through discharge tower (7d).
5. active lime calcination system according to claim 4, it is characterised in that: the electric precipitation (7c) is wet electrostatic
Deduster.
6. active lime calcination system according to claim 1, it is characterised in that: using the active lime calcination system into
Row active lime calcining technique, including it is rapid as follows:
S1: coarse crushing building stones: will take out from the lime stone that Shi Chang is shipped from raw material cabin (1) is interior, primary through crusher (2b) after dry
It is broken, the coarse crushing building stones that partial size is less than 15mm are obtained, so as to dry and fine crushing；
S2: dry: by the primary building stones obtained in step S1 through airflow line formula dryer (2a), drying keeps its water content small
In 5%, in case fine crushing；
S3: by the primary building stones after drying in step S2 again through crusher (2b) crushing and screening, it is small attritioning building stones: to obtain partial size
In the attritioning building stones of 5mm；
S4: dedusting: the attritioning building stones obtained in step S3 are sequentially entered after airflow line formula dryer (2a) drying again
Cyclone cylinder deduster (2d) and bag filter (2e) are dusted, and remove impurity, obtain the calcinated powder material met into furnace calcining,
It is stored in intermediate bin (3), it is spare；
S5: pre- firing: while preparing calcinated powder material, pre-burning is carried out to calcining kiln, makes preheating in kiln, keeps the temperature 6~10h, make
Temperature is stablized；
S6: feeding preheating: by the calcinated powder material obtained after dedusting in step S4 by passing through air lift mud pump (4d) after metering
It feeds preheater (5b), preheating and decomposed is carried out to calcinated powder material；
S7: calcining: the calcinated powder material after preheating in step S6 is sent into rotary kiln special (5a) and continues heating and calcining, makes it
It all decomposes and is sintered, obtain quick lime hot material；
S8: cooling discharging: the quick lime hot material that will be obtained in step S7, it is cooling by cooler (5c), obtain active lime at
Product；Active lime finished product is delivered to lime finished bin (6) preservation after cooling.
7. active lime calcine technology according to claim 6, it is characterised in that: in step S1, carry out the lime of coarse crushing
The humidity of building stones is water content less than 10%；The building stones water content of attritioning is carried out in step S3 less than 3%；It is dusted in step S4
Building stones water content less than 1%；The building stones preheated in step S6 are 100% dry calcinated powder material.
8. active lime calcine technology according to claim 6, it is characterised in that: dry drying temperature is in step S2
60~65 DEG C.
9. active lime calcine technology according to claim 6, it is characterised in that: preheater (5) preheats in step S6
Temperature is 1150~1200 DEG C；The temperature calcined in step S7 is 1300~1350 DEG C.
10. active lime calcine technology according to claim 6, it is characterised in that: calcine and produce in step S6 and step S7
Raw high-temp waste gas is sent into after electric precipitation (7c) purification using high-temperature blower (7b) through arranging after conditioning Tower (7a) absorbs humidification
Put tower (7d) emptying.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111039590A (en) * | 2019-12-19 | 2020-04-21 | 河南涵宇特种建筑材料有限公司 | Production process of air-entraining composite fiber expansion crack-resistant agent |
| CN111646710A (en) * | 2020-06-30 | 2020-09-11 | 浙江钙科机械设备有限公司 | Suspension calcination production line for powdered lime and suspension calcination process thereof |
| CN113173717A (en) * | 2021-05-20 | 2021-07-27 | 江西福得利碳酸钙业有限责任公司 | Calcium oxide production process and preparation device thereof |
| CN113769871A (en) * | 2021-09-15 | 2021-12-10 | 林高兴 | Active lime calcining system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039590A (en) * | 2019-12-19 | 2020-04-21 | 河南涵宇特种建筑材料有限公司 | Production process of air-entraining composite fiber expansion crack-resistant agent |
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| CN111646710A (en) * | 2020-06-30 | 2020-09-11 | 浙江钙科机械设备有限公司 | Suspension calcination production line for powdered lime and suspension calcination process thereof |
| CN113173717A (en) * | 2021-05-20 | 2021-07-27 | 江西福得利碳酸钙业有限责任公司 | Calcium oxide production process and preparation device thereof |
| CN113769871A (en) * | 2021-09-15 | 2021-12-10 | 林高兴 | Active lime calcining system |
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Application publication date: 20191203 |