CN108502909A - A kind of powdery highly active calcium oxide and its production technology - Google Patents
A kind of powdery highly active calcium oxide and its production technology Download PDFInfo
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- CN108502909A CN108502909A CN201810631256.0A CN201810631256A CN108502909A CN 108502909 A CN108502909 A CN 108502909A CN 201810631256 A CN201810631256 A CN 201810631256A CN 108502909 A CN108502909 A CN 108502909A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/02—Oxides or hydroxides
- C01F11/04—Oxides or hydroxides by thermal decomposition
- C01F11/06—Oxides or hydroxides by thermal decomposition of carbonates
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/001—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
- C04B28/344—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Abstract
The invention discloses a kind of powdery highly active calcium oxide and its production technologies, belong to active lime production technical field.The present invention first carries out lime stone using crusher using following technical scheme to be broken into big unequal fritter broken material; then the coarse fodder produced is sent through electro-vibrating feeder into flour mill; lime stone is set to be milled into the powdery that granularity is 0.1~3mm; powdered lime stone is stored in feed bin; or it is directly entered in multistage cyclone preheating cylinder and carries out suspension preheating decomposition; then it enters back into rotary kiln and is calcined; spiral distributor is also equipped in rotary kiln; material is set to be uniformly distributed in kiln, to utilize and accomplish scale production limestone resource 100%.The present invention is used for the overall process of powdery highly active calcium oxide production using the advanced scientific instrument of science and technology, and it is to have efficient, high-quality, low consumption, meet environmental requirement and enlargement, the modern calcium oxide production method for automating feature so that powdery highly active calcium oxide is prepared.
Description
Technical field
The present invention relates to active lime production technical fields, and in particular to a kind of powdery highly active calcium oxide and its production work
Skill.
Background technology
Active lime is the base stock of steel and iron industry, is also widely used in calcium carbide, electric power, glass, building materials, papermaking, sewage
The industries such as processing, nearly 1,000,000,000 tons of annual consumption.Currently, both at home and abroad active lime production method intrinsically there are mainly three types of,
First method is that equipment is roasted based on vertical kiln, usually using the blocky lime stone more than 20mm as raw material, with lump coal
For the production method of fuel；Second is generally also using the blocky lime stone more than 20mm as raw material, but it is with fuel gas
For the production method of fuel, i.e., using Maers Kiln as the so-called gas burning kiln of representative；The third is that rotary kiln is calcining kiln, in kiln tail
Vertical preheater is set, kiln hood is provided with the rotary kiln production method of vertical cooler.Although but these production methods are each
It is advantageous, but clearly disadvantageous place is also individually present.Due to being typically only capable to use 20~80mm in above-mentioned three kinds of methods
Interior blocky raw limestone is produced, and the waste of 30% or more limestone resource is often resulted in, these are wasted thin
Rubble lime stone forms mining wastes, and can form land seizure and environmental pollution, forms secondary disaster.
In recent years, powder active lime has become the new high-tech materials such as domestic iron powder sintering, light building material, chemical
One emphasis basic material of application aspect, with domestic market demand amount sharply increase and the continuous increasing of environmental improvement dynamics
Greatly, lime production industry faces eliminate the backward production facilities the immense pressure to update with production technology process.Therefore it is badly in need of one
Kind is easy, quickly produces the production method of high quality highly active calcium oxide to alleviate this predicament.
Invention content
The purpose of the present invention is to provide a kind of powdery highly active calcium oxide and its production technology, the present invention is first using science
Into scientific instrument and technology be used for powdery highly active calcium oxide production overall process.It is tool to make the preparation of powdery highly active calcium oxide
There is efficient, high-quality, low consumption, meet environmental requirement and enlargement, the modern calcium oxide production method for automating feature.It makes first
Be broken into unequal fritter broken material, the coarse fodder then produced greatly by lime stone with crusher to be fed through electric and magnetic oscillation
Machine is sent into flour mill, and lime stone is made to be milled into the powdery that granularity is 0.1~3mm, and powdered lime stone is stored in feed bin, or directly
It is preheated into multistage cyclone and carries out suspension preheating decomposition in cylinder, then entered back into rotary kiln and calcined, also matched in rotary kiln
There is spiral distributor, material is made to be uniformly distributed in kiln, to utilize and accomplish scale production limestone resource 100%,
To solve the problems mentioned in the above background technology.
The present invention provides a kind of powdery highly active calcium oxide and its production technologies, include the following steps：
(1) by lime stone ore crusher in crushing at big unequal fritter broken material, the coarse fodder produced is through electromagnetism
Oscillating feeder is sent into flour mill, and the big ore of ultra-specification is returned into crusher, is crushed again.Flour mill makes lime stone mill
The powdery that granularity is 0.1~3mm is made；
(2) powdered lime stone, which enters in 5 grades of whirlwind preheating cylinders, carries out suspension preheating decomposition, and preheating temperature keeps 700~850
DEG C, preheat 120~180min；
(3) powder material after preheating, which is pushed into through push rod in rotary kiln, to be calcined, and spiral cloth is also equipped in rotary kiln
Glassware makes material be uniformly distributed in kiln, and setting calcination temperature is 900 DEG C~1050 DEG C, keeps the temperature 10~40min, rotary kiln
Rotating speed is 2.8~3.4r/min.
(4) after the completion of calcining, granular material is cooled down with cooler, the recyclable system that enters of hot wind after cooling utilizes,
The temperature of active lime after cooling is about 60~80 DEG C.
Preferably, crusher described in step (1) is in CJ jaw crushers, impact breaker, impact crusher
One kind, most preferably CJ jaw crushers.
Preferably, flour mill described in step (1) is energy conservation and environmental protection raymond mill, high-pressure overhang roll milling machine, high-strength mill
Powder machine, super-pressure trapezoidal milling machine and tricyclic middling speed flour mill, most preferably energy conservation and environmental protection raymond mill.
Preferably, it is furnished with wind turbine inside raymond mill described in step (1), after material grinding, wind turbine becomes owner of wind
In casing, powder is blown afloat, is sorted through being placed in the analyzer above grinding chamber, the excessively thick material of fineness falls into grinding chamber again again
Secondary grinding, the stream with the wind that fineness meets the specification enter cyclone preheater.
Preferably, it is coated with the insulating layer that a layer thickness is 2cm~4cm outside step (2) the whirlwind preheating cylinder, it is described
The raw material by following parts by weight of insulating layer is made：20~40 parts of kaolin, 0.5~5 part of foaming agent, 5~15 parts of alumina silicate, glass
8~20 parts of glass fiber, 0.5~10 part of nanometer titanium dioxide silica aerogel, 5~10 parts of aluminium dihydrogen phosphate, 15~25 parts of water.
Further, the processing method of the insulating layer is：Each raw material is weighed by above-mentioned parts by weight, by kaolin, hair
Infusion, alumina silicate, glass fibre, aluminium dihydrogen phosphate, nanometer titanium dioxide silica aerogel and water stir 10~45min, are subsequently added into
Foaming agent continues quickly 10~15min of stirring, obtains mixture, certain pressure is placed in former and applies by mixture, is molded
Dry solidification.
Preferably, step (3) the rotary kiln inner wall is coated with the coating of one layer of 3cm~6cm, described by following parts by weight
Raw material is made：1~4 part of nano silicate clay, 20~40 parts of spherical boron nitride powder, ball-aluminium oxide ceramic powder 20~40
Part, 1~5 part of molybdenum disulfide, 10~15 parts of water, 5~10 parts of alumina silicate.
Further, the preparation of the coating and coating method are：Above-mentioned raw materials are weighed in parts by weight, after mixing
Paste mixture is obtained, mixture is uniformly coated on inside kiln body, the most external of final coating is aluminium oxide, controls coating
Thickness is 3cm~6cm；
Preferably, it in step (3) described calcination process, is not exclusively heated not in calcining kiln to prevent powdered lime stone from decomposing
Equal problem is also equipped with multiple spot spiral distributor.
Preferably, step (4) described cooler is gaseous state multistage suspension cooler, and hot wind after cooling is recyclable to enter system
System utilizes.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) using modernization energy conservation and environmental protection instrument and equipment, powdery highly active calcium oxide preparation method is made to have efficient, excellent
Matter, low consumption meet the advantages of environmental requirement and enlargement, automation feature.
(2) sieving rate for using the powdered lime stone for be prepared of raymond mill is up to 99.9%, i.e. powdery
For the size of lime stone between 0.1~3mm, the case where card powder, is few.
(3) preheating gas of preheating kiln of the present invention is the exhaust gas of calcining, cooling procedure generation, shortens forging for calcination process
The time is burnt, energy consumption is reduced and ensures the yield of calcium oxide.In addition, the use of insulating layer improves the insulating efficiency of calcining kiln.
(4) present invention, can be by even heat point by carrying out coating coating and adapted spiral distributor inside calcining kiln
Cloth makes reaction be heated evenly on powdered lime stone, improves the yield and quality of active calcium oxide, while shortening soaking time
Improve the quality of active calcium oxide, less burning rate.
Specific implementation mode
With reference to embodiments, the present invention will be described in further detail.It should be appreciated that specific reality described herein
Example is applied only to explain the present invention, is not intended to limit the present invention.
Embodiment one：
The production method of powdery highly active calcium oxide, includes the following steps in the present embodiment：
(1) by lime stone ore crusher in crushing at big unequal fritter broken material, the coarse fodder produced is through electromagnetism
Oscillating feeder is sent into flour mill, and the big ore of ultra-specification is returned into crusher, is crushed again.Flour mill makes lime stone mill
The powdery that granularity is 0.1~3mm is made；
(2) the powdered lime stone met the requirements after milling is handled is directly entered in 5 grades of whirlwind preheating cylinders and suspends
Pre- thermal decomposition, preheating temperature are kept for 750 DEG C, preheat 150min；Wherein preheating cylinder outside be coated with a layer thickness be 2cm~
The preparation method of the insulating layer of 4cm, insulating layer is as follows：By 20 parts of kaolin, 5 parts of foaming agent, 15 parts of alumina silicate, glass fibre 8
Part, 10 parts of nanometer titanium dioxide silica aerogel, 10 parts of aluminium dihydrogen phosphate, 20 parts of water, which is uniformly mixed, to be placed in former and applies one
Constant-pressure, molding, dry solidification.
(3) powder material after preheating, which is pushed into through push rod in rotary kiln, to be calcined, and spiral cloth is also equipped in rotary kiln
Glassware makes material be uniformly distributed in kiln, and setting calcination temperature is 950 DEG C, keeps the temperature 20min, the rotating speed of rotary kiln is 2.8r/
min.Wherein rotary kiln inner wall is coated with the coating of one layer of 3cm~6cm, and the coating production is as follows：Nano silicate is glued
2 parts of soil, 30 parts of spherical boron nitride powder, 30 parts of ball-aluminium oxide ceramic powder, 4 parts of molybdenum disulfide, 15 parts of water, 8 parts of alumina silicate,
Paste mixture is obtained after mixing, mixture is uniformly coated on inside kiln body, and the most external of final coating is aluminium oxide.
(4) calcine after the completion of, granular material is cooled down with gaseous state multistage suspension cooler, hot wind after cooling be recycled into
Enter system circulation utilization, the temperature of active lime after cooling is about 60~80 DEG C.
Embodiment two：
The production method of powdery highly active calcium oxide, includes the following steps in the present embodiment：
(1) by lime stone ore crusher in crushing at big unequal fritter broken material, the coarse fodder produced is through electromagnetism
Oscillating feeder is sent into flour mill, and the big ore of ultra-specification is returned into crusher, is crushed again.Flour mill makes lime stone mill
The powdery that granularity is 0.1~3mm is made；
(2) the powdered lime stone met the requirements after milling is handled is directly entered in 5 grades of whirlwind preheating cylinders and suspends
Pre- thermal decomposition, preheating temperature are kept for 800 DEG C, preheat 120min；Wherein preheating cylinder outside be coated with a layer thickness be 2cm~
The preparation method of the insulating layer of 4cm, insulating layer is as follows：By 30 parts of kaolin, 3 parts of foaming agent, 10 parts of alumina silicate, glass fibre 15
Part, 5 parts of nanometer titanium dioxide silica aerogel, 8 parts of aluminium dihydrogen phosphate, 15 parts of water, which is uniformly mixed, to be placed in former and applies centainly
Pressure, molding, dry solidification.
(3) powder material after preheating, which is pushed into through push rod in rotary kiln, to be calcined, and spiral cloth is also equipped in rotary kiln
Glassware makes material be uniformly distributed in kiln, and setting calcination temperature is 1050 DEG C, keeps the temperature 10min, the rotating speed of rotary kiln is 3r/
min.Wherein rotary kiln inner wall is coated with the coating of one layer of 3cm~6cm, and the coating production is as follows：Nano silicate is glued
1 part of soil, 20 parts of spherical boron nitride powder, 20 parts of ball-aluminium oxide ceramic powder, 1 part of molybdenum disulfide, 10 parts of water, 5 parts of alumina silicate,
Paste mixture is obtained after mixing, mixture is uniformly coated on inside kiln body, finally applies last layer aluminium oxide.
(4) calcine after the completion of, granular material is cooled down with gaseous state multistage suspension cooler, hot wind after cooling be recycled into
Enter system circulation utilization, the temperature of active lime after cooling is about 60~80 DEG C.
Embodiment three：
The production method of powdery highly active calcium oxide, includes the following steps in the present embodiment：
(1) by lime stone ore crusher in crushing at big unequal fritter broken material, the coarse fodder produced is through electromagnetism
Oscillating feeder is sent into flour mill, and the big ore of ultra-specification is returned into crusher, is crushed again.Flour mill makes lime stone mill
The powdery that granularity is 0.1~3mm is made；
(2) the powdered lime stone met the requirements after milling is handled is directly entered in 5 grades of whirlwind preheating cylinders and suspends
Pre- thermal decomposition, preheating temperature are kept for 700 DEG C, preheat 180min；Wherein preheating cylinder outside be coated with a layer thickness be 2cm~
The preparation method of the insulating layer of 4cm, insulating layer is as follows：By 40 parts of kaolin, 0.5 part of foaming agent, 5 parts of alumina silicate, glass fibre
20 parts, 0.5 part of nanometer titanium dioxide silica aerogel, 5 parts of aluminium dihydrogen phosphate, 25 parts of water, which is uniformly mixed, to be placed in former and applies
Certain pressure, molding, dry solidification.
(3) powder material after preheating, which is pushed into through push rod in rotary kiln, to be calcined, and spiral cloth is also equipped in rotary kiln
Glassware makes material be uniformly distributed in kiln, and setting calcination temperature is 900 DEG C, keeps the temperature 40min, the rotating speed of rotary kiln is 3.4r/
min.Wherein rotary kiln inner wall is coated with the coating of one layer of 3cm~6cm, and the coating production is as follows：Nano silicate is glued
4 parts of soil, 40 parts of spherical boron nitride powder, 40 parts of ball-aluminium oxide ceramic powder, 5 parts of molybdenum disulfide, 15 parts of water, alumina silicate 10
Part, paste mixture is obtained after mixing, mixture is uniformly coated on inside kiln body, and most external is aluminum oxide coating layer.
(4) calcine after the completion of, granular material is cooled down with gaseous state multistage suspension cooler, hot wind after cooling be recycled into
Enter system circulation utilization, the temperature of active lime after cooling is about 60~80 DEG C.
Example IV：
The production method of powdery highly active calcium oxide, includes the following steps in the present embodiment：
(1) by lime stone ore crusher in crushing at big unequal fritter broken material, the coarse fodder produced is through electromagnetism
Oscillating feeder is sent into flour mill, and the big ore of ultra-specification is returned into crusher, is crushed again.Flour mill makes lime stone mill
The powdery that granularity is 0.1~3mm is made；
(2) the powdered lime stone met the requirements after milling is handled is directly entered in 5 grades of whirlwind preheating cylinders and suspends
Pre- thermal decomposition, preheating temperature are kept for 850 DEG C, preheat 140min；Wherein preheating cylinder outside be coated with a layer thickness be 2cm~
The preparation method of the insulating layer of 4cm, insulating layer is as follows：25 parts of kaolin, 5 parts of foaming agent, 15 parts of alumina silicate, glass fibre 12
Part, 8 parts of nanometer titanium dioxide silica aerogel, 8 parts of aluminium dihydrogen phosphate, 22 parts of water, which is uniformly mixed, to be placed in former and applies centainly
Pressure, molding, dry solidification.
(3) powder material after preheating, which is pushed into through push rod in rotary kiln, to be calcined, and spiral cloth is also equipped in rotary kiln
Glassware makes material be uniformly distributed in kiln, and setting calcination temperature is 1000 DEG C, keeps the temperature 25min, the rotating speed of rotary kiln is 3.2r/
min.Wherein rotary kiln inner wall is coated with the coating of one layer of 3cm~6cm, and the coating production is as follows：Nano silicate clay 3
Part, 25 parts of spherical boron nitride powder, 40 parts of ball-aluminium oxide ceramic powder, 5 parts of molybdenum disulfide, 15 parts of water, 5 parts of alumina silicate mix
Paste mixture is obtained after closing uniformly, mixture is uniformly coated on inside kiln body, coating most external is aluminium oxide.
(4) calcine after the completion of, granular material is cooled down with gaseous state multistage suspension cooler, hot wind after cooling be recycled into
Enter system utilization, the temperature of active lime after cooling is about 60~80 DEG C.
Control group one
Insulating layer is not used outside the preheater of this control group, remaining step is identical with embodiment 1.
Control group two
The calcining kiln inner wall of this control group is coated without using coating, and other methods are identical with embodiment 1.
Control group three
Spiral distributor is not used inside the calcining kiln of this control group, other methods are identical with embodiment 1.
| Group | Calcium oxide yield (mg/g) | Activity degree (mL) | Burning rate (%) |
| Embodiment one | 988.24 | 448 | 2.2 |
| Embodiment two | 976.36 | 487 | 3.7 |
| Embodiment three | 993.24 | 492 | 1.8 |
| Example IV | 995.19 | 407 | 2.9 |
| Comparative example one | 724.78 | 321 | 11.3 |
| Comparative example two | 766.84 | 346 | 9.4 |
| Comparative example three | 696.37 | 299 | 14.3 |
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, be not to be taken as excluding other embodiments, and can be used for various other combinations, modification and
Environment, and can be changed by the above teachings or related fields of technology or knowledge in the scope of the invention is set forth herein
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of the claims.
Claims (9)
1. a kind of powdery highly active calcium oxide and its production technology, which is characterized in that include the following steps：
(1) by lime stone ore crusher in crushing at big unequal fritter broken material, the coarse fodder produced is through electric and magnetic oscillation
Batcher is sent into flour mill, and flour mill makes lime stone be milled into the powdery that granularity is 0.1~3mm；
(2) powdered lime stone, which enters in 5 grades of whirlwind preheating cylinders, carries out suspension preheating decomposition, and preheating temperature is kept for 700~850 DEG C,
Preheat 120~180min；
(3) powder material after preheating, which is pushed into through push rod in rotary kiln, to be calcined, and rotary kiln is also equipped with spiral distributor, makes material
It is uniformly distributed in kiln, calcination temperature is 900 DEG C~1050 DEG C, keeps the temperature 10~40min, the rotating speed of rotary kiln is 2.8~3.4r/
min。
(4) after the completion of calcining, granular material is cooled down with cooler, the recyclable system that enters of hot wind after cooling utilizes, cooling
The temperature of active lime afterwards is about 60~80 DEG C.
2. according to a kind of powdery highly active calcium oxide of claim 1 and its production technology, which is characterized in that described in step (1)
Crusher is one kind in CJ jaw crushers, impact breaker, impact crusher, most preferably CJ jaw crushers.
3. according to a kind of powdery highly active calcium oxide of claim 1 and its production technology, which is characterized in that described in step (1)
Flour mill is energy conservation and environmental protection raymond mill, high-pressure overhang roll milling machine, high-strength flour mill, super-pressure trapezoidal milling machine and tricyclic middling speed
Flour mill, most preferably energy conservation and environmental protection raymond mill.
4. a kind of powdery highly active calcium oxide and its production technology according to claim 1, which is characterized in that step (1) institute
It states raymond mill and is furnished with wind turbine, after material grinding, wind is blown into main case by wind turbine, blows afloat powder, through being placed on grinding chamber
The analyzer of side is sorted, and fineness crosses rough material and falls into grinding chamber regrinding again, and what fineness met the specification enters preheater.
5. a kind of powdery highly active calcium oxide and its production technology according to claim 1, which is characterized in that step (2) institute
It states and is coated with the insulating layer that a layer thickness is 2cm~4cm, the original by following parts by weight of the insulating layer outside whirlwind preheating cylinder
Material is made：20~40 parts of kaolin, 0.5~5 part of foaming agent, 5~15 parts of alumina silicate, 8~20 parts of glass fibre, nanometer titanium dioxide
0.5~10 part of silica aerogel, 5~10 parts of aluminium dihydrogen phosphate, 15~25 parts of water.
6. a kind of powdery highly active calcium oxide and its production technology according to claim 5, which is characterized in that the insulating layer
Processing method be：Each raw material is weighed by above-mentioned parts by weight, by kaolin, foaming agent, alumina silicate, glass fibre, di(2-ethylhexyl)phosphate
Hydrogen aluminium, nanometer titanium dioxide silica aerogel and water stir 10~45min, are subsequently added into foaming agent and continue quickly 10~15min of stirring,
Mixture is obtained, mixture is placed in former and is applied certain pressure, shaping and drying solidification.
7. a kind of powdery highly active calcium oxide and its production technology according to claim 1, which is characterized in that step (3) institute
It includes following raw material to state rotary kiln inner wall to have 3cm~6cm coatings, coating：1~4 part of nano silicate clay, spherical boron nitride powder
20~40 parts of body, 20~40 parts of ball-aluminium oxide ceramic powder, 1~5 part of molybdenum disulfide, 10~15 parts of water, alumina silicate 5~10
Part.
8. a kind of powdery highly active calcium oxide and its production technology according to claim 7, which is characterized in that the coating
It prepares and coating method is：Above-mentioned raw materials are weighed in parts by weight, obtain paste mixture after mixing, mixture is uniform
It is coated on inside kiln body, the most external of final coating is aluminium oxide, and the thickness for controlling coating is 3cm~6cm.
9. a kind of powdery highly active calcium oxide and its production technology according to claim 1, which is characterized in that step (4) institute
It is gaseous state multistage suspension cooler to state cooler, and the recyclable system that enters of hot wind after cooling utilizes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112250098A (en) * | 2020-10-28 | 2021-01-22 | 衢州顺天钙业有限公司 | High-activity calcium oxide and preparation method thereof |
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| CN103387347A (en) * | 2013-07-30 | 2013-11-13 | 天津水泥工业设计研究院有限公司 | Method and device for producing active lime powder from calcined limestone |
| CN107285651A (en) * | 2017-07-10 | 2017-10-24 | 合肥水泥研究设计院 | A kind of active powder lime suspension calcining device |
| CN107619203A (en) * | 2017-09-28 | 2018-01-23 | 广西华洋矿源材料有限公司 | A kind of production method of active calcium oxide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112250098A (en) * | 2020-10-28 | 2021-01-22 | 衢州顺天钙业有限公司 | High-activity calcium oxide and preparation method thereof |
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