CN110590193B - High-purity calcium oxide calcining kiln car - Google Patents
High-purity calcium oxide calcining kiln car Download PDFInfo
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- CN110590193B CN110590193B CN201911067381.4A CN201911067381A CN110590193B CN 110590193 B CN110590193 B CN 110590193B CN 201911067381 A CN201911067381 A CN 201911067381A CN 110590193 B CN110590193 B CN 110590193B
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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
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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
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Abstract
The invention discloses a high-purity calcium oxide calcining kiln car, and aims to overcome the defects that the calcium oxide calcining process is limited by the structure of the kiln car, raw materials are unevenly heated, the discharging is inconvenient, and the product quality is reduced. The calcining furnace comprises a heat transfer layer, a heat preservation layer, a furnace body and a base which are sequentially arranged from top to bottom, wherein heating wires are arranged in the heat preservation layer, a plurality of rows of calcining boxes are stacked on a kiln car, each calcining box comprises a loading cavity and a discharging cavity, positioning rods are respectively arranged on the front side and the rear side of each calcining box on the kiln car, the front side and the rear side of each calcining box are respectively sleeved on the two positioning rods, each row of calcining boxes penetrate through a rotating pipe, a lifting rod is sleeved in each rotating pipe, a lifting rod is connected to the position, corresponding to each calcining box, on each lifting rod, a lifting groove is formed in each rotating pipe, each lifting rod penetrates through each lifting groove, each stirring rod is connected with a stirring frame, each stirring frame is arranged in the loading cavity of each calcining box, a lifting frame and a lifting piston cylinder are arranged on the kiln car, each lifting piston cylinder is connected with a lifting frame, and the lower ends of the lifting rods are connected to the lifting frames.
Description
Technical Field
The invention relates to a calcium oxide calcining technology, in particular to a high-purity calcium oxide calcining kiln car.
Background
The kiln car is an important component of the calcium oxide calcining kiln, the raw materials are placed on the kiln car during calcium oxide calcining, then the kiln car is pushed into the kiln for calcining, the kiln is pushed out after calcining is completed, and calcium oxide products on the kiln car are discharged and packaged after cooling. Due to the limitations of the calcination process, it is difficult to obtain a double high product with high activity and high purity. In order to obtain high-activity products in the traditional calcining process, the high-activity products are mostly calcined at ultrahigh temperature for a short time, although the activity is improved, the content of calcium oxide is obviously reduced, and the requirement of the super-strong high-activity products cannot be met; in order to obtain a high-purity product, high-temperature long-time calcination is mostly adopted, the purity is improved, but the activity is obviously reduced. The structure of the kiln car in the calcium oxide calcining process directly influences the quality of the product, but a plurality of kiln cars used at present are not beneficial to uniform heating of raw materials and influence the discharging speed, so that the quality of the product is reduced.
Disclosure of Invention
The invention overcomes the defects that the calcium oxide calcining process is limited by the structure of a kiln car, raw materials are heated unevenly, the discharging is inconvenient, and the product quality is reduced, and provides the high-purity calcium oxide calcining kiln car.
In order to solve the technical problem, the invention adopts the following technical scheme: a high-purity calcium oxide calcining kiln car comprises a heat transfer layer, a heat preservation layer, a car body and a base which are sequentially arranged from top to bottom, wherein heating wires are installed in the heat preservation layer, a plurality of rows of calcining boxes are stacked on the kiln car and comprise a material carrying cavity and a discharging cavity, the upper end opening and the lower end of the material carrying cavity are closed, the discharging cavity is communicated from top to bottom, the discharging cavities of the calcining boxes in the same row are stacked together to form a discharging channel, positioning rods are installed on the front side and the rear side of each calcining box on the kiln car, the front side and the rear side of each calcining box are respectively sleeved on the two positioning rods, each row of calcining boxes respectively penetrate through a rotating pipe, a lifting rod is sleeved in each rotating pipe, a stirring rod is connected to the position, corresponding to each calcining box, on each lifting rod, is provided with a lifting groove, each stirring rod penetrates through the lifting groove, the stirring rod is connected with a stirring frame, the stirring frame is arranged in the material carrying cavity of each calcining box, a lifting piston cylinder and a lifting piston cylinder are installed on the kiln car, the lifting rod is connected with the lifting rod, and the lifting piston cylinder is connected with the lifting frame, and the lower end of the lifting rod is connected to the lifting groove; one side of the vehicle body is hinged with the base, the other side of the vehicle body is provided with a chute, the lifting piston cylinder is arranged on the vehicle body, a cam which is driven by a motor to rotate is arranged on the base and corresponds to the chute, the lifting support piston cylinder is arranged on the base, a tension spring is connected between the support piston cylinder and the base, a slide block is slidably arranged in the chute, a telescopic rod of the support piston cylinder is hinged on the slide block, and the lower end of the support piston cylinder is attached to the cam; the rotary pipe is connected with a deflector rod at a position corresponding to each calcining box, a pushing piston cylinder is arranged on the kiln car, a telescopic rod of the pushing piston cylinder is connected with a rack, and a gear is arranged at the lower end of the rotary pipe and is in meshing transmission with the rack; the side wall of a material loading cavity of the calcining box is connected with a partition plate at a position corresponding to the discharging cavity, the upper end of the partition plate is hinged to the top of the material loading cavity, the lower end of the partition plate is movably attached to the bottom of the material loading cavity, a long-strip-shaped guide groove is formed in the lower end of the partition plate, a guide pillar is arranged at the end part of a deflector rod, the guide pillar is inserted into one end of the guide groove, and the deflector rod rotates to enable the guide pillar to slide in the guide groove, so that the partition plate is pushed out outwards.
When calcium oxide is calcined, calcium hydroxide powder raw materials are loaded into a material loading cavity of a calcining box to be calcined, a lifting piston cylinder works to drive a lifting rod to continuously lift, so that a stirring frame lifts in the material loading cavity of the calcining box to stir calcium hydroxide powder, the calcium hydroxide powder is heated more uniformly, the calcining time is shortened, the synchronism of calcining the calcium hydroxide powder at different positions is facilitated, and the product quality is improved. The heating wires are arranged in the heat preservation layer to heat the kiln, and the heating and heat preservation effects are good. The calcium hydroxide powder raw material is loaded into the calcining box, and the calcining boxes are stacked, so that heat can enter the calcium hydroxide powder raw material, and the calcium hydroxide powder raw material is prevented from being stacked together to increase calcining difficulty. And after the calcination is finished, quickly transferring the kiln car into a cooling box, isolating air, cooling to 100 ℃, and quickly discharging and packaging. When the material is unloaded, the piston cylinder is pushed to work, the telescopic rod of the piston cylinder is pushed to drive the rack to move transversely, so that the rotating pipe is driven to rotate, the deflector rod rotates along with the rotating pipe, and the guide pillar at the end part of the deflector rod slides in the guide groove, so that the partition plate is pushed outwards. At the moment, the loading cavity is communicated with the unloading cavity, and calcium oxide in the loading cavity falls into the unloading cavity and falls onto the kiln car along the unloading channel. Meanwhile, the telescopic rod of the supporting piston cylinder is jacked upwards to enable the vehicle body to be in an inclined state, the cam rotates to enable the supporting piston cylinder to move up and down continuously, so that one end of the vehicle body is driven to move up and down continuously, the shaking effect is achieved, calcium oxide in the material loading cavity can fall into the discharging channel quickly, the calcium oxide on the upper surface of the kiln car can move to the lower side for discharging, and the discharging speed is further accelerated. The high-purity calcium oxide calcining kiln car ensures that the raw materials in the calcium oxide calcining process are uniformly heated, the discharging is convenient, air is not easy to enter in the whole process, the calcined calcium oxide product has good quality, and the characteristics of ultra-strong high activity and high purity are considered.
Preferably, a cover plate is arranged on the uppermost calcining box, and two ends of the cover plate are fixedly connected with the two positioning rods. The cover plate is arranged, so that each row of calcining boxes can be placed more stably and reliably, and meanwhile, the powder in the uppermost calcining box is prevented from leaking outwards.
Preferably, the lower end of the supporting piston cylinder is supported on the base, a raised head is arranged at the lower end of the supporting piston cylinder, a positioning hole is formed in the base, and the raised head penetrates through the positioning hole and is attached to the cam. The supporting piston cylinder is stably and reliably installed.
Preferably, the supporting piston cylinder is provided with two oppositely arranged connecting lugs, the base is provided with a guide rod corresponding to the connecting lugs, the connecting lugs are movably inserted on the guide rod, and the tensioning spring is connected between the base and the connecting lugs. The connecting lug sleeve slides on the guide rod in the lifting process of the supporting piston cylinder, the lifting process is stable and reliable, and the deviation phenomenon cannot occur.
Preferably, a material carrying plate is arranged on the upper surface of the heat transfer layer, a material discharging groove which is obliquely arranged from top to bottom is formed in the edge of one side of the heat transfer layer, the material discharging groove penetrates through the upper surface and the side surface of the heat transfer layer, and a detachable sealing plug is arranged in the material discharging groove. The material carrying plate is arranged to facilitate sliding blanking of calcium oxide, the sealing plug is dismounted during blanking, and the calcium oxide slides to the blanking groove and falls into packaging equipment through the blanking groove to be packaged. The blanking process is quick.
Preferably, the lower end of the partition plate is provided with an extension strip, the extension strip is arranged in the material carrying cavity, and the guide groove is formed in the extension strip. The arrangement of the extension bar is convenient for the deflector rod to push the partition plate to move outwards, so that the clamping stagnation phenomenon is prevented.
Preferably, the front side and the rear side of the upper end of the calcining box and the front side and the rear side of the lower end of the calcining box are respectively provided with a supporting flange, the supporting flanges are provided with insertion holes, and the positioning rods penetrate through the insertion holes. The calcining box arranged in the structure is more stable and reliable in stacking.
Preferably, a supporting convex ring is arranged at the lower part of the positioning rod, the lowermost calcining box is supported at the upper end of the supporting convex ring, and a discharging gap is arranged between the lowermost calcining box and the upper surface of the heat transfer layer. The clearance of unloading sets up and is convenient for unload fast, the putty phenomenon that prevents to appear.
Compared with the prior art, the invention has the beneficial effects that: the high-purity calcium oxide calcining kiln car ensures that the raw materials in the calcium oxide calcining process are uniformly heated, the discharging is convenient, the air is not easy to enter in the whole process, the calcined calcium oxide product has good quality, and the characteristics of ultra-strong high activity and high purity are considered.
Drawings
FIG. 1 is a schematic of one embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1 of the present invention;
FIG. 3 is a partial top plan view of the position of the calcination box of the present invention;
in the figure: 1. heat transfer layer, 2, heat preservation layer, 3, vehicle body, 4, base, 5, electric heating wire, 6, calcining box, 7, material loading cavity, 8, unloading cavity, 9, unloading channel, 10, positioning rod, 11, cover plate, 12, supporting convex ring, 13, supporting flanging, 14, rotating pipe, 15, lifting rod, 16, stirring rod, 17, lifting groove, 18, stirring frame, 19, lifting frame, 20, lifting piston cylinder, 21, movable cavity, 22, sliding groove, 23, cam, 24, supporting piston cylinder, 25, tensioning spring, 26, slide block, 27, connecting lug, 28, guide rod, 29, convex head, 30, positioning hole, 31, stirring rod, 32, pushing piston cylinder, 33, rack, 34, gear, 35, partition board, 36, guide groove, 37, guide pillar, 38, extending strip, 39, material loading plate, 40, unloading groove, 41 and closing plug.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example (b): the utility model provides a kiln car is calcined to high-purity calcium oxide (see figure 1 to figure 3), including the heat transfer layer 1 that from top to bottom sets gradually, heat preservation 2, automobile body 3, base 4, the heat transfer layer, the heat preservation, automobile body three links together, install heating wire 5 in the heat preservation, it has a plurality of to be listed as to calcine box 6 to pile up on the kiln car, it includes year material chamber 7 and the chamber 8 of unloading to calcine the box, it seals to carry material chamber upper end opening lower extreme, the chamber of unloading link up from top to bottom, the chamber of unloading of the same row of calcining the box piles up together and constitutes the passageway 9 of unloading, calcining the box on the kiln car front and back both sides and all installing locating lever 10, it suits respectively on two locating levers to calcine box front and back both sides. The calcining box at the top is provided with a cover plate 11, and two ends of the cover plate are fixedly connected with two positioning rods. A supporting convex ring 12 is arranged at the lower part of the positioning rod, the lowermost calcining box is supported at the upper end of the supporting convex ring, and a discharging gap is arranged between the lowermost calcining box and the upper surface of the heat transfer layer. The front side and the rear side of the upper end of the calcining box and the front side and the rear side of the lower end of the calcining box are respectively provided with a supporting flange 13, the supporting flanges are provided with insertion holes, and the positioning rods penetrate through the insertion holes. Each row of calcining box penetrates through a rotating pipe 14, a lifting rod 15 is sleeved in the rotating pipe, the lower end of the lifting rod extends out of the rotating pipe, a stirring rod 16 is connected to the position, corresponding to each calcining box, on the lifting rod, a lifting groove 17 is formed in the rotating pipe, the stirring rod penetrates through the lifting groove and is connected with a stirring frame 18, and the stirring frame is arranged in a material carrying cavity of the calcining box. The material loading cavity in the calcining box is square, two stirring frames which are arranged up and down are arranged in each material loading cavity, each stirring frame comprises a plurality of square frames with different sizes, and the square frames are connected together. A lifting frame 19 and a lifting piston cylinder 20 are arranged on the kiln car, a telescopic rod of the lifting piston cylinder is connected with the lifting frame, and the lower end of the lifting rod is connected to the lifting frame. A movable cavity 21 is arranged in the heat-insulating layer, and the lifting frame is arranged in the movable cavity and can move up and down in the movable cavity.
One side of the vehicle body is hinged with the base, the other side of the vehicle body is provided with a chute 22, the chute is in a T shape, the lifting piston cylinder is arranged on the vehicle body, a cam 23 driven to rotate by a motor is arranged on the base and at a position corresponding to the chute, a lifting support piston cylinder 24 is arranged on the base, a tension spring 25 is connected between the support piston cylinder and the base, a slide block 26 can be arranged in the chute in a sliding manner, a telescopic rod of the support piston cylinder is hinged on the slide block, and the lower end of the support piston cylinder is attached to the cam; two connecting lugs 27 which are arranged oppositely are arranged on the supporting piston cylinder, a guide rod 28 is arranged on the base corresponding to the connecting lugs, the connecting lugs are movably inserted on the guide rod, and the tensioning spring is connected between the base and the connecting lugs. The lower end of the supporting piston cylinder is supported on the base, the lower end of the supporting piston cylinder is provided with a raised head 29, the base is provided with a positioning hole 30, and the raised head penetrates through the positioning hole and is attached to the cam.
The corresponding position of each calcining box on the rotating tube is connected with a deflector rod 31, a pushing piston cylinder 32 is arranged on the kiln car, the telescopic rod of the pushing piston cylinder is connected with a rack 33, the lower end of the rotating tube is provided with a gear 34, and the gear is in meshing transmission with the rack; the rack is arranged at the upper part in the movable cavity, the slide rail groove is arranged at the upper part of the movable cavity, and the rack is arranged in the slide rail groove in a matching way. The side wall of a material loading cavity of the calcining box is connected with a partition plate 35 at a position corresponding to the material unloading cavity, the upper end of the partition plate is hinged to the top of the material loading cavity, the lower end of the partition plate is movably attached to the bottom of the material loading cavity, a long strip-shaped guide groove 36 is formed in the lower end of the partition plate, a guide pillar 37 is arranged at the end part of a shifting lever, the guide pillar is inserted into one end of the guide groove, and an included angle between the shifting lever and the guide groove is an acute angle. The deflector rod rotates to make the guide post slide in the guide groove, thereby pushing the partition plate outwards. The lower end of the partition board is provided with an extension strip 38, the extension strip is arranged in the material carrying cavity, and the guide groove is arranged on the extension strip. The upper surface of the heat transfer layer is provided with a material loading plate 39, the edge of one side of the heat transfer layer is provided with a lower trough 40 which is obliquely arranged from top to bottom, the lower trough penetrates through the upper surface and the side surface of the heat transfer layer, and a detachable sealing plug 41 is arranged in the lower trough.
When calcium oxide is calcined, calcium hydroxide powder raw materials are loaded into a material loading cavity of a calcining box to be calcined, a lifting piston cylinder works to drive a lifting rod to continuously lift, so that a stirring frame lifts in the material loading cavity of the calcining box to stir calcium hydroxide powder, the calcium hydroxide powder is heated more uniformly, the calcining time is shortened, the synchronism of calcining the calcium hydroxide powder at different positions is facilitated, and the product quality is improved. The heating wires are arranged in the heat preservation layer to heat the kiln, and the heating and heat preservation effects are good. The calcium hydroxide powder raw material is filled into the calcining box, and the calcining boxes are stacked, so that heat can enter the calcium hydroxide powder raw material, and the calcium hydroxide powder raw material is prevented from being stacked together to increase calcining difficulty. And after the calcination is finished, quickly transferring the kiln car into a cooling box, isolating air, cooling to 100 ℃, and quickly discharging and packaging. When the material is unloaded, the piston cylinder is pushed to work, the telescopic rod of the piston cylinder is pushed to drive the rack to move transversely, so that the rotating pipe is driven to rotate, the deflector rod rotates along with the rotating pipe, and the guide pillar at the end part of the deflector rod slides in the guide groove, so that the partition plate is pushed outwards. At the moment, the loading cavity is communicated with the unloading cavity, and calcium oxide in the loading cavity falls into the unloading cavity and falls onto the kiln car along the unloading channel. Meanwhile, the telescopic rod of the supporting piston cylinder is jacked upwards to enable the vehicle body to be in an inclined state, the cam rotates to enable the supporting piston cylinder to move up and down continuously, so that one end of the vehicle body is driven to move up and down continuously, the shaking effect is achieved, calcium oxide in the material loading cavity can fall into the discharging channel quickly, the calcium oxide on the upper surface of the kiln car can move to the lower side for discharging, and the discharging speed is further accelerated. The high-purity calcium oxide calcining kiln car has the advantages that the raw materials in the calcium oxide calcining process are heated uniformly, the discharging is convenient, air is not easy to enter in the whole process, the calcined calcium oxide product is good in quality, and the characteristics of ultra-strong high activity and high purity are considered.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (8)
1. A high-purity calcium oxide calcining kiln car is characterized by comprising a heat transfer layer, a heat preservation layer, a car body and a base which are sequentially arranged from top to bottom, wherein heating wires are arranged in the heat preservation layer, a plurality of calcining boxes are stacked on the kiln car and comprise a material carrying cavity and a material discharging cavity, the upper end of the material carrying cavity is open, the lower end of the material discharging cavity is closed, the material discharging cavity is communicated from top to bottom, the material discharging cavities of the calcining boxes in the same row are stacked together to form a material discharging channel, positioning rods are arranged on the front side and the rear side of each calcining box on the kiln car, the front side and the rear side of each calcining box are respectively sleeved on the two positioning rods, each row of calcining boxes are respectively penetrated through a rotating pipe, a lifting rod is sleeved in each rotating pipe, a lifting rod is connected to the lifting rod corresponding to each calcining box, a lifting groove is arranged on each rotating pipe, the lifting rod is penetrated through the lifting groove, the stirring rod is connected with a stirring frame, the stirring frame is arranged in the material carrying cavity of each calcining box, a lifting piston cylinder and is arranged on the kiln car, a lifting frame and a lifting piston cylinder are arranged on the kiln car, the lifting frame and connected with the lifting telescopic rod, and the lifting piston cylinder, and the lifting frame, and the lower end of the lifting piston cylinder are connected to the lifting rod; one side of the vehicle body is hinged with the base, the other side of the vehicle body is provided with a chute, the lifting piston cylinder is arranged on the vehicle body, a cam which is driven by a motor to rotate is arranged on the base and corresponds to the chute, the lifting support piston cylinder is arranged on the base, a tension spring is connected between the support piston cylinder and the base, a slide block is slidably arranged in the chute, a telescopic rod of the support piston cylinder is hinged on the slide block, and the lower end of the support piston cylinder is attached to the cam; the rotary pipe is connected with a deflector rod at a position corresponding to each calcining box, a pushing piston cylinder is arranged on the kiln car, a telescopic rod of the pushing piston cylinder is connected with a rack, and a gear is arranged at the lower end of the rotary pipe and is in meshing transmission with the rack; the side wall of a material loading cavity of the calcining box is connected with a partition plate at a position corresponding to the discharging cavity, the upper end of the partition plate is hinged to the top of the material loading cavity, the lower end of the partition plate is movably attached to the bottom of the material loading cavity, a strip-shaped guide groove is formed in the lower end of the partition plate, a guide pillar is arranged at the end part of a deflector rod, the guide pillar is inserted into one end of the guide groove, and the deflector rod rotates to enable the guide pillar to slide in the guide groove, so that the partition plate is pushed outwards; the material loading cavity in the calcining box is square, two stirring frames which are arranged up and down are arranged in each material loading cavity, each stirring frame comprises a plurality of square frames with different sizes, and the square frames are connected together.
2. The high-purity calcium oxide calcining kiln car as claimed in claim 1, wherein a cover plate is arranged on the calcining box at the top, and two ends of the cover plate are fixedly connected with two positioning rods.
3. The high purity calcium oxide calcining kiln car as claimed in claim 1, wherein the lower end of the supporting piston cylinder is supported on the base, the lower end of the supporting piston cylinder is provided with a raised head, the base is provided with a positioning hole, and the raised head passes through the positioning hole and is attached to the cam.
4. The high-purity calcium oxide calcining kiln car as claimed in claim 1, wherein the supporting piston cylinder is provided with two oppositely arranged connecting lugs, the base is provided with a guide rod corresponding to the connecting lugs, the connecting lugs are movably inserted on the guide rod, and the tensioning spring is connected between the base and the connecting lugs.
5. The high-purity calcium oxide calcining kiln car as claimed in claim 1, wherein a material loading plate is arranged on the upper surface of the heat transfer layer, a material discharging groove is arranged on the edge of one side of the heat transfer layer and is inclined outwards from top to bottom, the material discharging groove penetrates through the upper surface and the side surface of the heat transfer layer, and a detachable sealing plug is arranged in the material discharging groove.
6. The high-purity calcium oxide calcining kiln car as claimed in any one of claims 1 to 5, wherein the lower end of the partition board is provided with an extension bar, the extension bar is arranged in the material loading cavity, and the guide groove is arranged on the extension bar.
7. The high purity calcium oxide calcining kiln car as claimed in any one of claims 1 to 5, wherein the calcining box is provided with support flanges at the front and rear sides of the upper end and the front and rear sides of the lower end, the support flanges are provided with insertion holes, and the positioning rods pass through the insertion holes.
8. The high-purity calcium oxide calcining kiln car as claimed in any one of claims 1 to 5, wherein a supporting convex ring is arranged at the lower part of the positioning rod, the lowermost calcining box is supported at the upper end of the supporting convex ring, and a discharge gap is arranged between the lowermost calcining box and the upper surface of the heat transfer layer.
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| CN201911067381.4A CN110590193B (en) | 2019-11-04 | 2019-11-04 | High-purity calcium oxide calcining kiln car |
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| JPH07487B2 (en) * | 1988-06-06 | 1995-01-11 | 吉澤石灰工業株式会社 | Highly activated quicklime production equipment |
| CN201390707Y (en) * | 2009-02-26 | 2010-01-27 | 支亮 | Magnesium oxide preparation device |
| CN202066367U (en) * | 2011-05-12 | 2011-12-07 | 宝鸡市晋旺达机械设备有限公司 | Elevator of sintering machine |
| CN103058245B (en) * | 2012-12-24 | 2014-12-24 | 刘立文 | Equipment and technology of calcium oxide producing with calcium sulfate |
| CN108383400B (en) * | 2018-05-02 | 2022-12-23 | 建德市泰合新材料有限公司 | High-purity and high-activity calcium oxide calcining kiln and calcining method |
| CN110128035B (en) * | 2019-05-23 | 2021-07-16 | 江苏华冶钙业有限公司 | Preparation process and preparation equipment of high-purity calcium oxide |
| CN210736578U (en) * | 2019-11-04 | 2020-06-12 | 建德市泰合新材料有限公司 | High-purity calcium oxide calcining kiln car structure |
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