CN107954619B - Fixed crystallization kiln device - Google Patents
Fixed crystallization kiln device Download PDFInfo
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- CN107954619B CN107954619B CN201711123492.3A CN201711123492A CN107954619B CN 107954619 B CN107954619 B CN 107954619B CN 201711123492 A CN201711123492 A CN 201711123492A CN 107954619 B CN107954619 B CN 107954619B
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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
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/036—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln, i.e. to obtain beta-hemihydrate
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Abstract
The invention discloses a fixed crystallization kiln device, which comprises a kettle body, a dividing wheel component, a water filtering door and a spiral conveyer, wherein the kettle body comprises a kettle body outer shell and a kettle body inner shell, a kettle body jacket is formed by the kettle body outer shell and the kettle body inner shell, the dividing wheel component is arranged in the kettle body inner shell, the water filtering door is arranged at the bottom of the kettle body inner shell, the spiral conveyer is arranged at the bottom of the kettle body, a feeding hole is arranged at the top of the kettle body, and a discharging hole is arranged at the bottom of the spiral conveyer; the dividing wheel component comprises a dividing wheel inner cylinder, a stock bin movable grid plate and a stock bin movable end plate, wherein the stock bin movable grid plate is arranged along the circumferential direction of the dividing wheel inner cylinder, the two ends of the dividing wheel inner cylinder are provided with the stock bin movable end plate, the two ends of the kettle inner shell are respectively provided with a plurality of annular labyrinth sealing plates, the stock bin movable end plate and the annular labyrinth sealing plates form a material sealing structure, and the water filtering door enables material and water to be separated. The fixed crystallization kiln device adopts dynamic steam curing, so that the alpha gypsum powder is uniformly heated, material-water separation can be realized, and the production quality of the product is stable.
Description
Technical Field
The invention relates to the technical field of gypsum powder processing equipment, in particular to a fixed crystallization kiln device.
Background
The alpha-type high-strength gypsum is alpha-type semi-hydrated gypsum, has the advantages of high strength, high density, high hardness, high fluidity and the like, and is widely applied to the fields of moulds, precision manufacturing, building materials and the like. At present, the production method of alpha-type high-strength gypsum comprises a wet method and a dry method.
The main equipment for producing the high-strength gypsum by the wet method is a reaction kettle, the powdery gypsum raw material can be prepared into the finished product of the alpha-type high-strength gypsum only by the processes of adding water for pulping, heating, crystal transformation, dehydration, drying, aging, grinding and the like, the pasty material is heated during the wet method production, the indirectly-conducted heat needs to heat the material and a large amount of water, and the whole steam-pressing process is long in time and low in efficiency. Large equipment investment, complex process, long flow, unstable product quality, and the energy consumption and unit cost of the product are the highest of all the process methods.
The method is characterized in that dihydrate gypsum containing attached water is used as a raw material, a closed pressure vessel is utilized to carry out dry steaming at a certain temperature and under a certain pressure, and then drying is carried out, so that the process method for obtaining the alpha-type high-strength hemihydrate gypsum powder is dry production. However, the domestic dry-process production process can only adopt block dry-process autoclaving, for example, a horizontal or vertical autoclave mainly adopts block natural gypsum as a raw material, the raw material is put into the autoclave and then is aerated with saturated steam for autoclaving for 7-12 hours to realize static autoclaving, and then is dried for 10-24 hours to prepare the alpha-gypsum. The processing mode has long production period and huge energy consumption, and the equipment can not be directly applied to the processing production of powdery natural gypsum or desulfurized gypsum and other industrial by-product gypsum.
Therefore, how to provide a device for producing alpha gypsum powder by using a powdery industrial byproduct gypsum dry method, which can dynamically and uniformly heat the alpha gypsum powder in the production process, improve the heat efficiency, shorten the production period, reduce the energy consumption and produce a product with stable quality, is a problem to be solved by technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a fixed crystallization kiln device, which adopts dynamic steam curing to uniformly heat α gypsum powder, can improve the heating efficiency, reduce the energy consumption, and can realize material-water separation, shorten the production cycle of the product, and ensure the stable product quality.
Based on the aim, the fixed crystallization kiln device provided by the invention comprises a kettle body, a dividing wheel assembly, a water filtering door and a spiral conveyer, wherein the kettle body comprises a kettle body outer shell and a kettle body inner shell, a kettle body jacket is formed by the kettle body outer shell and the kettle body inner shell, the dividing wheel assembly is arranged in the kettle body inner shell, the water filtering door is arranged at the bottom of the kettle body inner shell, the spiral conveyer is arranged at the bottom of the kettle body, a feeding hole is formed in the top of the kettle body, and a discharging hole is formed in the bottom of the spiral conveyer;
the box wheel subassembly includes box wheel inner tube, feed bin activity check board, feed bin activity end plate, feed bin activity check board is followed the circumference setting of box wheel inner tube is used for with a plurality of feed bins are separated into to the surface of box wheel inner tube, the both ends of box wheel inner tube all are provided with feed bin activity end plate, the both ends of cauldron internal shell respectively are provided with polylith annular labyrinth seal board, feed bin activity end plate with annular labyrinth seal board becomes the material seal structure, plays sealed effect to the gypsum in the feed bin.
The first half of the cauldron body is the cylinder, and the latter half is the cone, and the bottom of cylinder cauldron internal shell is provided with an axial opening, the axial opening is sealed by the water filter door, be provided with the drainage hole on the water filter door, the water filter door can be opened and closed.
In one embodiment of the invention, the bin movable grid plates are uniformly distributed along the circumferential direction of the dividing wheel inner cylinder, two annular labyrinth seal plates are respectively arranged at two ends of the kettle inner shell, and the bin movable end plate is arranged between the two annular labyrinth seal plates and can be driven by the dividing wheel inner cylinder to rotate.
In one embodiment of the invention, hollow rotating shafts are arranged at two ends of the inner barrel of the dividing wheel, one end of each hollow rotating shaft is hermetically arranged on the movable end plate of the storage bin through a filler, and the kettle body jacket and the hollow parts of the rotating shafts are used for conducting heat media.
In one embodiment of the invention, the kettle further comprises a bearing seat, a motor, a speed reducer and a big gear, wherein the bearing seat is arranged outside the kettle body and used for supporting the hollow rotating shaft, and the hollow rotating shaft is driven to rotate by the motor, the speed reducer and the big gear and the small gear.
In one embodiment of the present invention, the water filter door is a double door.
In one embodiment of the invention, pneumatic door opening assemblies are arranged on two sides of the interior of the conical kettle body, and the opening and the closing of the water filtering door are controlled by the pneumatic door opening assemblies.
In one embodiment of the invention, the feed inlet is further provided with a feed inlet cover, and the discharge outlet is closed by a manual valve.
In one embodiment of the invention, the top of the kettle body is also provided with a temperature detection jack, a pressure detection jack, an exhaust port and a steam condenser.
In one embodiment of the invention, the device further comprises a kettle body bracket for supporting the kettle body.
Compared with the prior art, the fixed crystallization kiln device has the following beneficial effects:
the fixed crystallization kiln device comprises the dividing wheel component, and when the motor drives the dividing wheel component to rotate, gypsum in the storage bin is turned over to form dynamic steam curing, so that the heating efficiency is improved. Meanwhile, a material sealing structure is formed by a bin movable end plate in the dividing wheel component and annular labyrinth sealing plates at two ends of the kettle inner shell, so that the gypsum in the bin is sealed, and the gypsum in the bin is prevented from being thrown out in the rotating process of the dividing wheel component; and the bottom of the cylindrical kettle body is provided with a water filtering door, so that the material and water separation can be realized in the gypsum steam curing process. Therefore, the fixed crystallization kiln device has reasonable structural design, can realize dynamic steam curing and material-water separation of gypsum, and can produce high-quality alpha gypsum powder.
Drawings
FIG. 1 is a schematic structural diagram of a fixed crystallization kiln apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a side view of FIG. 1;
the method comprises the following steps of 1-a kettle body, 2-a kettle body outer shell, 3-a kettle body inner shell, 4-a kettle body jacket, 5-a dividing wheel component, 6-a dividing wheel inner cylinder, 7-a bin movable dividing plate, 8-a bin movable end plate, 9-a screw conveyer, 10-a feed inlet, 11-a discharge outlet, 12-an annular labyrinth sealing plate, 13-a hollow rotating shaft, 14-a filler seal, 15-a bearing seat, 16-a motor, 17-a speed reducer, 18-a large gear, a small gear, 19-a water filtering door, 20-a pneumatic door opening component, 21-a feed inlet cover, 22-a manual valve, 23-a temperature detection jack, 24-a pressure detection jack, 25-an exhaust port, 26-a steam condenser and 27-a kettle body support.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
Fig. 1 is a schematic structural diagram of a fixed crystallization kiln device according to an embodiment of the present invention, and as shown in fig. 1, the fixed crystallization kiln device includes a kettle 1, a dividing wheel assembly 5, a water filtering door 19, and a screw conveyor 9, the kettle 1 includes a kettle outer shell 2 and a kettle inner shell 3, and a kettle jacket 4 is formed by the kettle outer shell 2 and the kettle inner shell 3, the dividing wheel assembly 5 is disposed in the kettle inner shell 3, the water filtering door 19 is disposed at the bottom of the kettle inner shell 3, the screw conveyor 9 is disposed at the bottom of the kettle 1, a feed port 10 is disposed at the top of the kettle 1, and a discharge port 11 is disposed at the bottom of the screw conveyor 9.
In the embodiment of the invention, the kettle body jacket 4 is filled with a heat-conducting medium which is a heat-preserving heat-exchanging heat source. Gypsum is added into the storage bin through the feeding hole 10, the division wheel assembly 5 carries out dynamic steaming on the gypsum in the storage bin, the dynamic steaming gypsum carries out crystal transformation, then drying is carried out, and the dried alpha gypsum powder is discharged from the discharging hole 11.
Fig. 2 is the enlargements of a department in fig. 1, as shown in fig. 2, division wheel subassembly 5 includes division wheel inner tube 6, feed bin activity check board 7, feed bin activity end plate 8, feed bin activity check board 7 is followed division wheel inner tube 6's circumference sets up, be used for with a plurality of feed bins are separated into on division wheel inner tube 6's surface, division wheel inner tube 6's both ends all are provided with feed bin activity end plate 8, the both ends of cauldron body inner shell 3 respectively are provided with polylith annular labyrinth sealing plate 12, feed bin activity end plate 8 with annular labyrinth sealing plate 12 forms the material seal structure, plays sealed effect to the gypsum in the feed bin, when preventing division wheel subassembly 5 rotatory, and the gypsum in the feed bin is thrown away.
Preferably, the bin movable grid plates 7 are uniformly distributed along the circumferential direction of the dividing wheel inner cylinder 6, so that the bin movable grid plates 7 uniformly divide the surface of the dividing wheel inner cylinder 6 into a plurality of bins; the both ends of cauldron body inner shell 3 respectively are provided with two annular labyrinth seal boards 12, can weld two annular labyrinth seal boards 12 on cauldron body inner shell 3, feed bin movable end plate 8 sets up between two annular labyrinth seal boards 12 (the both ends of dividing box wheel inner tube 6 are become material seal structure by two annular labyrinth seal boards 12 and a feed bin movable end plate 8 promptly), and can by dividing box wheel inner tube 6 drives rotatoryly, and two annular labyrinth seal boards 12 form material seal structure with rotatory feed bin movable end plate 8, can form material seal structure at the both ends homoenergetic of dividing box wheel inner tube 6 like this, guarantees that the gypsum in every feed bin can not all not thrown away at rotatory in-process.
Fig. 3 is a side view of fig. 1, and as shown in fig. 3, the upper half part of the kettle body 1 is a cylinder, and the lower half part is a cone, that is, the cross section of the kettle body 1 is an upper round lower cone, the bottom of the cylinder kettle body is provided with an axial opening, the axial opening is closed by a water filtering gate 19, the water filtering gate 19 is provided with a water filtering hole, and the water filtering gate 19 can be opened and closed.
In the embodiment of the present invention, the surface of the inner cylinder 6 of the dividing wheel is a uniformly distributed bin, the inside is a heat source channel filled with a heat conducting medium, and the heat conducting medium can be heat conducting oil or high temperature flue gas, but is not limited thereto. The rotation of the drum 6 can be driven by a drive, for example an electric motor. When the device is used, the heat-conducting medium is introduced into the inner barrel 6 of the division wheel to preheat gypsum in the storage bins, and when the inner barrel 6 of the division wheel rotates, the gypsum overturns in each storage bin to form dynamic steam curing, so that the heating efficiency is improved.
In the embodiment of the invention, the gypsum is dynamically steamed, so that the uniform heating can be ensured, the heating efficiency is high, and the energy consumption is reduced.
Optionally, a hollow rotating shaft 13 is disposed at two ends of the inner cell wheel cylinder 6, one end of the hollow rotating shaft 13 is disposed on the movable end plate 8 of the storage bin through a packing seal 14, and both the kettle jacket 4 and the hollow portion of the rotating shaft 13 are used for conducting a heat conducting medium, which may be heat conducting oil or high temperature flue gas, but is not limited thereto.
As shown in fig. 1, hollow rotating shafts 13 are welded on the bin movable end plates 8 at two ends of the inner drum 6 of the division wheel, the hollow rotating shafts 13 penetrate through two ends of the kettle body 1, and the part of the hollow rotating shafts 13, which is in contact with the kettle body 1, is sealed by using fillers 14, so that the kettle body 1 forms a closed pressure container. The packing seal 14 relies on the interface between the packing and the machine (e.g., shaft) to effect the seal. The filler can be selected from asbestos rope, asbestos packing, pressed graphite and other materials. In practical application, a liquid film is formed between the filler and the shaft due to the action of tension, so that the filler and the shaft form a relation similar to a sliding bearing, and the filler and the shaft cannot be abraded due to excessive friction.
In the embodiment of the invention, the heat-conducting medium is introduced from the hollow rotating shaft 13 at one end, and the tail gas after heat exchange is discharged from the hollow rotating shaft 13 at the other end, so that the heating of the split lattice wheel assembly 5 is realized.
Preferably, the device further comprises a bearing seat 15, a motor 16, a speed reducer 17 and a big gear 18, wherein the bearing seat 15 is arranged outside the kettle body 1 and used for supporting the hollow rotating shaft 13, and the hollow rotating shaft 13 is driven by the motor 16, the speed reducer 17 and the big gear 18 to rotate.
Optionally, the water filter door 19 is a double door, and the axial opening is an axial rectangular opening. At the gypsum dehydration in-process, form saturated vapor pressure in the cauldron body 1, until forming liquid water, at this moment lie in the cylinder cauldron body bottommost two to have the drainage hole on opening the door, liquid water can pass through the drainage hole, and the gypsum material then can not realize the material water separation through taking the two opening the doors of filtration hole. Therefore, the fixed crystallization kiln device provided by the embodiment of the invention is provided with the material-water separation structure, and the material-water separation device is not required to be additionally arranged, so that the process is simple, and the product quality is stable.
Optionally, pneumatic door-opening assemblies 20 are arranged on two sides of the interior of the conical kettle body, and the opening and closing of the water filtering door 19 are controlled by the pneumatic door-opening assemblies 20. The pneumatic door opening assembly 20 comprises an air pump, air cylinders and piston rods, the piston rods on the two air cylinders are respectively and fixedly connected with the water filtering door 19, and in the door opening stroke, an air supply loop is controlled to extend the piston rods to push the water filtering door 19 to open; in the closing process, the air supply circuit enables the piston rod to retract, and the water filter door 19 is pulled to be closed.
The feed inlet 10 is also provided with a feed inlet cover 21, and the discharge outlet 11 is sealed by a manual valve 22. Optionally, the feed inlet 10 is a circular feed inlet, and the feed inlet cover 21 is a quick-opening manhole cover. The screw conveyer 9 is arranged at the bottom of the conical kettle body, and the screw conveyer 9 can be a shaftless screw conveyer.
In the embodiment of the invention, the top of the kettle body 1 is further provided with a temperature detection jack 23, a pressure detection jack 24, an exhaust port 25 and a steam condenser 26. Optionally, an exhaust valve is disposed on the exhaust port 25.
In the embodiment of the invention, the fixed crystallization kiln device further comprises a kettle body bracket 27 for supporting the kettle body 1, so that the kettle body 1 is easy to install.
The fixed crystallization kiln device provided by the embodiment of the invention can be used for producing alpha gypsum powder by utilizing a desulfurized gypsum dry method.
The working process of the fixed crystallization kiln device comprises the following steps:
(1) heat conducting oil or low-temperature flue gas is introduced into the kettle body jacket 4 and the dividing wheel inner cylinder 6 to preheat the kettle body 1 and the dividing wheel component 5.
(2) And opening the feed inlet 10, feeding materials into one bin on the inner cylinder 6 of the division wheel, rotating the inner cylinder 6 of the division wheel for a certain angle after a certain amount of materials are fed into a second bin, and sequentially feeding the materials until all the bins are completely fed. At this time, the double door at the lower part of the cylindrical kettle body is closed, the manual valve 22 at the discharge port 11 of the screw conveyer 9 is closed, and the exhaust port 25 at the top of the kettle body 1 is opened.
(3) The feed inlet 10 is closed, the motor 16 is started to rotate the inner cylinder 6 of the dividing wheel at the uniform speed, and the gypsum in the storage bin is preheated. Due to the fact that the bin sealing device is arranged, when the inner drum 6 of the dividing wheel rotates, gypsum overturns in each bin, dynamic steam curing is formed, and heating efficiency is improved. When the temperature is preheated to a certain temperature, the exhaust port 25 is closed. And continuously heating and raising the temperature.
(4) In the temperature rise process, gypsum is dehydrated, saturated vapor pressure is formed in the kettle body 1 until liquid water is formed, the gypsum is crystallized, and the liquid water flows to the bottom groove of the screw conveyor 9 and flows to the discharge port 11 to be collected due to the fact that the double-door at the bottommost part of the cylindrical kettle body is provided with the water filtering holes. And the gypsum material is steamed and cured in the storage bin all the time through the double doors, so that the material and water separation is realized.
(5) After the crystal is transferred for a certain time, the steam condenser at the upper part is started to carry out secondary water separation.
(6) After the crystal is transferred, an exhaust valve is opened, pressure is released and exhaust is carried out until the pressure is normal, a manual valve 22 on a discharge port 11 of the screw conveyor 9 is opened, water is discharged and drying is carried out until the drying is finished.
(7) And opening a water filtering door 19 at the bottommost part of the cylindrical kettle body, starting the screw conveyor 9, and starting discharging until the discharging is finished.
According to the above, the fixed crystallization kiln device comprises the dividing wheel component, and when the motor drives the dividing wheel component to rotate, gypsum in the storage bin is turned over, so that dynamic steam curing is formed, and the heating efficiency is improved. Meanwhile, a material sealing structure is formed by a bin movable end plate in the dividing wheel component and annular labyrinth sealing plates at two ends of the kettle inner shell, so that the gypsum in the bin is sealed, and the gypsum in the bin is prevented from being thrown out in the rotating process of the dividing wheel component; and the bottom of the cylindrical kettle body is provided with a water filtering door, so that the material and water separation can be realized in the gypsum temperature rising process. Therefore, the fixed crystallization kiln device has reasonable structural design, can realize dynamic steam curing and material-water separation of gypsum, and can produce high-quality alpha gypsum powder.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. A fixed crystallization kiln device is characterized by comprising a kettle body, a dividing wheel component, a water filtering door and a spiral conveyer, wherein the kettle body comprises a kettle body outer shell and a kettle body inner shell, a kettle body jacket is formed by the kettle body outer shell and the kettle body inner shell, the dividing wheel component is arranged in the kettle body inner shell, the water filtering door is arranged at the bottom of the kettle body inner shell, the spiral conveyer is arranged at the bottom of the kettle body, a feeding hole is formed in the top of the kettle body, and a discharging hole is formed in the bottom of the spiral conveyer;
the dividing wheel component comprises a dividing wheel inner cylinder, a bin movable grid plate and a bin movable end plate, wherein the bin movable grid plate is arranged along the circumferential direction of the dividing wheel inner cylinder and is used for dividing the surface of the dividing wheel inner cylinder into a plurality of bins, the bin movable end plate is arranged at each of two ends of the dividing wheel inner cylinder, a plurality of annular labyrinth sealing plates are respectively arranged at each of two ends of the kettle inner shell, and the bin movable end plate and the annular labyrinth sealing plates form a material sealing structure to seal gypsum in the bins;
two ends of the inner cylinder of the dividing wheel are provided with hollow rotating shafts, one end of each hollow rotating shaft is arranged on the movable end plate of the storage bin in a sealing manner through a filler, and the kettle body jacket and the hollow parts of the rotating shafts are used for conducting heat media;
the first half of the cauldron body is the cylinder, and the latter half is the cone, and the bottom of cylinder cauldron internal shell is provided with an axial opening, the axial opening is sealed by the water filter door, be provided with the drainage hole on the water filter door, the water filter door can be opened and closed.
2. The fixed crystallization kiln device according to claim 1, wherein the bin movable grid plates are uniformly distributed along the circumferential direction of the inner barrel of the division wheel, two annular labyrinth seal plates are respectively arranged at two ends of the inner shell of the kettle body, and the bin movable end plate is arranged between the two annular labyrinth seal plates and can be driven to rotate by the inner barrel of the division wheel.
3. The fixed crystallization kiln device according to claim 1, further comprising a bearing seat, a motor, a speed reducer and a big gear and a small gear, wherein the bearing seat is arranged outside the kettle body and is used for supporting the hollow rotating shaft, and the hollow rotating shaft is driven to rotate by the motor, the speed reducer and the big gear and the small gear.
4. The fixed crystallization kiln apparatus of claim 1, wherein the water screen door is a double door.
5. The fixed crystallization kiln device according to claim 1, wherein pneumatic door-opening assemblies are arranged on both sides of the interior of the conical kettle body, and the opening and closing of the water filtering door are controlled by the pneumatic door-opening assemblies.
6. The fixed crystallization kiln device according to claim 1, wherein the feed inlet is further provided with a feed inlet cover, and the discharge outlet is closed by a manual valve.
7. The fixed crystallization kiln device according to claim 1, wherein the top of the kettle body is further provided with a temperature detection jack, a pressure detection jack, an exhaust port and a steam condenser.
8. The fixed crystallization kiln apparatus of claim 1, further comprising a pot support for supporting the pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711123492.3A CN107954619B (en) | 2017-11-14 | 2017-11-14 | Fixed crystallization kiln device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711123492.3A CN107954619B (en) | 2017-11-14 | 2017-11-14 | Fixed crystallization kiln device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107954619A CN107954619A (en) | 2018-04-24 |
| CN107954619B true CN107954619B (en) | 2020-10-27 |
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| CN201711123492.3A Active CN107954619B (en) | 2017-11-14 | 2017-11-14 | Fixed crystallization kiln device |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4188186A (en) * | 1978-06-22 | 1980-02-12 | Combustion Engineering, Inc. | Automatic calcining kettle |
| CN102967151B (en) * | 2012-12-05 | 2015-12-09 | 安阳中联海皇水泥有限公司 | Enter the blanking equipment of kiln feed system |
| CN104944816B (en) * | 2015-06-29 | 2017-01-25 | 湖南昌迅科技环保股份有限公司 | Rotary crystallization kiln for alpha gypsum powder |
| CN205740775U (en) * | 2016-06-08 | 2016-11-30 | 湖南昌迅科技环保股份有限公司 | A kind of alpha gypsum powder crystallization |
| CN105800978B (en) * | 2016-06-08 | 2017-09-01 | 湖南昌迅科技环保股份有限公司 | A kind of alpha gypsum powder rotates crystallization |
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- 2017-11-14 CN CN201711123492.3A patent/CN107954619B/en active Active
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