CN111574205A - Production method of sintered corundum and production line for production and preparation - Google Patents

Production method of sintered corundum and production line for production and preparation Download PDF

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Publication number
CN111574205A
CN111574205A CN202010482421.8A CN202010482421A CN111574205A CN 111574205 A CN111574205 A CN 111574205A CN 202010482421 A CN202010482421 A CN 202010482421A CN 111574205 A CN111574205 A CN 111574205A
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fixedly connected
plate
corundum
pipe
raw materials
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CN111574205B (en
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何健
张嘉良
吕戌生
张家勤
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Jiangsu Jingxin New Material Co ltd
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Jiangsu Jingxin New Material Co ltd
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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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/004—Devices for shaping artificial aggregates from ceramic mixtures or from mixtures containing hydraulic binder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/02—Conditioning the material prior to shaping
    • B28B17/026—Conditioning ceramic materials
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
    • C—CHEMISTRY; METALLURGY
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62695—Granulation or pelletising
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/636—Polysaccharides or derivatives thereof
    • C04B35/6365—Cellulose or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F2035/99—Heating
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Glanulating (AREA)

Abstract

The invention discloses a production line for corundum production and preparation, which comprises a mounting frame, wherein a mixing barrel is welded at the top end of the mounting frame, a heat-insulating cover is welded at the outer side of the mixing barrel, electric heating rings are uniformly and fixedly connected at the positions, corresponding to the outer side of the mixing barrel, of the inner side of the heat-insulating cover, hydraulic lifting rods are symmetrically and fixedly connected at the two sides of the outer part of the heat-insulating cover, a sealing cover is fixedly connected at the top end of each hydraulic lifting rod, and a driving motor is fixedly connected at the middle part of the top end of each sealing cover. The quick drying and the uniform mixing of the raw materials in the mixing barrel are realized.

Description

Production method of sintered corundum and production line for production and preparation
Technical Field
The invention relates to the technical field of corundum production, in particular to a production method of sintered corundum and a production line for production and preparation.
Background
Corundum, the name is from India, is the mineralogical name, the homogeneity and the dissimilarity of corundum Al2O3 mainly have three variants, namely alpha-Al 2O3, beta-Al 2O3 and gamma-Al 2O3, the corundum hardness is second to diamond, the corundum is mainly used for advanced grinding materials, bearing materials of watches and precision machinery, and corundum preparation equipment is required in the production process of the corundum;
however, in the mixing process of corundum raw materials in the current market, because all raw materials are not dry enough, a granule mechanism can be formed among the same raw materials in the stirring and mixing process of all raw materials, so that the raw materials in granules formed in the granulating process of the mixed raw materials are not uniformly distributed, and the problem of the overall quality of corundum generated by sintering is solved.
Disclosure of Invention
The invention provides a production method of sintered corundum and a production line for production and preparation, which can effectively solve the problems that in the mixing process of corundum raw materials proposed in the background art, because all raw materials are not dry enough, a granule mechanism can be formed among the same raw materials in the stirring and mixing process of all raw materials, so that the raw materials in granules formed in the granulating process of the mixed raw materials are not uniformly distributed, and the integral quality of the sintered corundum is reduced.
In order to achieve the purpose, the invention provides the following technical scheme: a production method of sintered corundum comprises the following steps:
s1, mixing the following raw materials: weighing the corundum sintered gamma-Al 2O3, the seawater magnesia, the high bauxite and the additive respectively to ensure that the content of each raw material reaches the specified specific gravity;
s2, mixing the raw materials: mixing and stirring various powdery raw materials to form uniformly distributed mixed raw materials;
s3, granulating and forming: after the binder is sprayed on the mixed raw materials, granulating the mixed raw materials to enable the raw materials to be aggregated to form a granule mechanism;
s4, screening the aggregates: sorting the installation shapes and sizes of the granular structures formed by granulation, and separately collecting and storing granules with different sizes and shapes;
s5, drying the pellets: feeding the sieved granules into a drying furnace for drying
S6, sintering corundum: selecting different calcining furnaces for calcining the dried granules according to the sizes of the granules, and sintering the granules of the mixed raw materials to form corundum;
s7, cooling and checking: and cooling the sintered corundum, and sampling and inspecting the finished corundum after cooling.
Preferably, in the step S1, the γ -Al2O3 is common industrial γ -Al2O 3.
Preferably, in step S3, the binder is carboxymethyl cellulose, and the content of carboxymethyl cellulose is 0.3% to 0.8% of the total mass of γ -Al2O3, seawater magnesite and bauxite.
Preferably, in the step S5, the drying temperature is 450-650 ℃.
A production line for corundum production and preparation comprises a mounting rack, wherein a mixing and impurity removing mechanism is arranged at the top end of the mounting rack;
the mixing and impurity removing mechanism comprises a mixing barrel, a heat preservation cover, an electric heating ring, a hydraulic lifting rod, a sealing cover, a driving motor, a driving rotating shaft, an upper mounting ring, a rotating rod, a stir-frying plate, a lower mounting ring, a mounting pipe, a stirring square rod, a magnetic rod, a collecting tank, a discharging pipe, a sealing plate, a connecting cross rod, an electric telescopic rod and a feeding hopper;
the top end of the mounting frame is welded with a mixing barrel, the outer side of the mixing barrel is welded with a heat-insulating cover, the inner side of the heat-insulating cover is uniformly and fixedly connected with an electric heating ring at a position corresponding to the outer side of the mixing barrel, and the input end of the electric heating ring is electrically connected with the output end of commercial power;
the two sides of the outer part of the heat-insulating cover are symmetrically and fixedly connected with hydraulic lifting rods, the top ends of the hydraulic lifting rods are fixedly connected with sealing covers, the middle parts of the top ends of the sealing covers are fixedly connected with driving motors, the input ends of the driving motors are electrically connected with the output ends of commercial power, and the output shafts of the driving motors are fixedly connected with driving rotating shafts corresponding to the inner side positions of the mixing barrels;
the top end of the outer side of the driving rotating shaft is fixedly connected with an upper mounting ring, the middle part of the outer side of the upper mounting ring is uniformly and fixedly connected with a rotating rod in the circumferential direction, one end of the outer side of the rotating rod, which is far away from the driving rotating shaft, is fixedly connected with a stir-frying plate, the position, corresponding to the bottom end of the upper mounting ring, of the outer side of the driving rotating shaft is fixedly connected with a lower mounting ring, the middle part of the outer side of the lower mounting ring is uniformly and fixedly connected with a rotating rod in the;
the bottom of the outer side of the driving rotating shaft is fixedly connected with a mounting pipe, stirring square rods are uniformly and fixedly connected to the circumferential direction of the outer side of the mounting pipe, magnetic rods are movably connected to the inner sides of the stirring square rods, and collecting grooves are uniformly formed in the outer sides of the stirring square rods;
material pipe is arranged to blending bin bottom middle part fixedly connected with, it is connected with the closing plate through the spout to arrange material pipe top and correspond blending bin bottom position department, closing plate one end corresponds row outside of material pipe one side position department fixedly connected with and connects the horizontal pole, it corresponds row equal fixedly connected with electric telescopic handle in material pipe top both sides to connect the horizontal pole both ends, electric telescopic handle's input and the output electric connection of commercial power, sealing cap top one side fixedly connected with adds the hopper.
Preferably, one end of the stir-frying plate at one side of the upper mounting ring is tightly attached to the inner wall of the mixing barrel, one end of the rotating rod at one side of the lower mounting ring is tightly attached to the inner wall of the mixing barrel, and the stir-frying plate and the rotating rod are movably connected;
one end of the electric telescopic rod is fixedly connected with the discharge pipe.
Preferably, a continuous granulation mechanism is arranged at a position on one side of the mounting frame, which corresponds to an outlet at the bottom end of the discharge pipe;
the continuous granulation mechanism comprises an installation barrel, an annular chute, a rotating ring, a centrifugal disc, a supporting arc plate, a supporting long arc plate, a spiral plate, a protection plate, a long circular chute, a supporting frame, an installation vertical pipe, an annular pipe, a water mist spray head, a liquid conveying pipe, an infusion pump and a liquid storage tank;
a mounting barrel is fixedly connected to one side of the mounting frame corresponding to the outlet position of the bottom end of the discharging pipe, an annular chute is formed in the bottom end of the inner side of the mounting barrel, a rotating ring is connected to the inner side of the annular chute in a sliding manner, a centrifugal disc is fixedly connected to the top end of the rotating ring, a supporting arc plate is uniformly and fixedly connected to the edge portion of the top end of the centrifugal disc, a supporting long arc plate is fixedly connected to the top end of the supporting arc plate, a spiral plate is fixedly connected to one side of the supporting long arc plate, and a protection;
the utility model discloses an installation bucket, including installation bucket top limit portion, support frame top middle part correspond the inside position department fixedly connected with installation standpipe in installation bucket, the even fixedly connected with installation standpipe in the installation standpipe outside, the installation standpipe outside is through the even fixedly connected with ring pipe of pipeline, the even fixedly connected with water smoke shower nozzle in the ring pipe outside, installation standpipe top fixedly connected with transfer line, transfer line bottom fixedly connected with transfer pump, the input and the commercial power output end electric connection of transfer pump, the transfer pump bottom is through pipe connection to liquid reserve tank, the liquid reserve tank is located installation bucket top middle part.
Preferably, the centrifugal disc and the spiral plate top have all evenly seted up the slot, the side closely laminates with the installation bucket inner wall, the transfer pump passes through one side of bolt fixed connection to the liquid reserve tank.
Preferably, a discharging notch is formed in one side of the installation barrel corresponding to the top end of the centrifugal disc, and a screening and air-drying mechanism is arranged in one side of the installation barrel corresponding to the edge of the discharging notch;
the screening and air-drying mechanism comprises a discharge plate, a small-hole inclined plate, a middle-hole inclined plate, a large-hole inclined plate, a sealing cover, a placing frame, a collecting box, an intercepting box, a collecting hopper, a fan, an air guide pipe, a filter cover, a collecting box, a gas pipe and an exhaust head;
the device comprises an installation barrel, a discharge plate, a sealing cover, a discharge plate, a large-hole inclined plate, a discharge groove, a large-hole inclined plate, a sealing cover, a storage rack and a collecting box, wherein the discharge plate is fixedly connected to one side of the installation barrel corresponding to the edge of a discharge groove opening;
an intercepting box is fixedly connected to the position, corresponding to the bottom of the discharging plate, of the inner side of the placing frame, a collecting hopper is fixedly connected to the position, corresponding to the top of the discharging plate, of the top end of the sealing cover, a fan is fixedly connected to the top end of the collecting hopper, the input end of the fan is electrically connected with the output end of a mains supply, the air outlet end of the fan is fixedly connected with an air guide pipe, the air guide pipe is connected to the top of the intercepting box, a filter cover is fixedly connected to the top end of one side of;
one side of the intercepting box is fixedly connected with a gas pipe corresponding to the middle part of one end of the filter cover, and one end of the gas pipe corresponds to one end of the bottom of the sealing cover and is fixedly connected with an exhaust head.
Preferably, the plane of the bottom end in the discharging slot opening is flush with the plane of the top end of the centrifugal disc, and the distance between the exhaust port of the exhaust head and the plane of the top end of the large-hole inclined plate is larger than the diameter of a leak hole in the large-hole inclined plate.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:
1. the mixing and impurity removing mechanism is arranged, the driving rotating shaft and parts on the outer side of the driving rotating shaft are driven to rotate through the driving motor, raw materials in the mixing barrel are heated through the heat-insulating cover and the electric heating ring, the raw materials in the mixing barrel are stir-fried through the rotating rod on the upper mounting ring and the rotating rod on the lower mounting ring and the stir-frying plate, and meanwhile, as the rotating rod and the stir-frying plate are tightly attached to the inner wall of the mixing barrel, the heat of the electric heating ring is quickly led into the central part of the mixing barrel through the rotating rod and the stir-frying plate, so that the raw materials in the mixing barrel are heated more uniformly, and the quick drying and uniform mixing of the;
the method effectively avoids the problem that the granules formed in the granulating process of the mixed raw materials are uneven in distribution of the raw materials inside the granules, and the overall quality of the corundum generated by sintering is reduced due to the fact that the same raw materials directly form a large-volume granular structure in the stirring process of the corundum due to the fact that the raw materials inside the corundum are wet, so that the raw materials can be kept in a dry powder state to be mixed, the raw materials are mixed more uniformly, and the production quality of the corundum is improved.
2. The mixed raw materials are continuously stirred through the stirring square rod at the bottom of the mixing barrel, a small amount of iron powder in the high-alumina bauxite raw material is adsorbed through the magnetic rod in the stirring square rod, and meanwhile, the iron powder on the magnetic rod is gathered in the collecting tank under the pushing of the friction of other raw materials, so that the impact of other transported materials during discharging is avoided, the iron powder is separated from the magnetic rod, the adsorption capacity of the stirring square rod is improved, the content of iron impurities in the corundum raw material is effectively reduced, the purity of corundum is improved, and the product quality of corundum is further improved;
the content of iron impurities mixed in the high-alumina bauxite is effectively reduced, the integral strength of the iron impurities to the corundum is weakened, and the corundum produced by sintering has good comprehensive performance.
3. The continuous granulating mechanism is arranged, the centrifugal disc, the supporting arc-shaped plate, the supporting long arc-shaped plate and the spiral plate are driven by the motor to rotate along the inner wall of the mounting barrel, the binder in the liquid storage tank is conveyed into the mounting vertical pipe by the liquid conveying pump, then the binder is sprayed onto the raw material on the spiral plate through the annular pipe and the water mist spray head, the raw material on the spiral plate is changed into a regular granule mechanism through the interaction of the mounting barrel and the spiral plate, meanwhile, due to the special structural design of the spiral plate, the continuous granulating mechanism can continuously generate high-quality granules, and the processing efficiency and the processing quality of corundum raw material granules are improved;
the problems of intermittent feeding and irregular pellet appearance in the traditional granulation process are effectively avoided, and the corundum raw material can form a regular pellet mechanism.
4. The screening and air-drying mechanism is arranged, more transported granules are sequentially rolled through the pore inclined plate, the middle pore inclined plate and the large pore inclined plate under the guidance of the discharge plate, and the granules passing through the pore inclined plate, the middle pore inclined plate and the large pore inclined plate are respectively collected through the collection box, so that raw material granules with different volumes are classified, and then the granules with different sizes are respectively sintered;
the phenomenon of uneven quality when the granules with different volumes are sintered simultaneously is effectively avoided, and meanwhile, due to the fact that the granules with different sizes are sintered at different times, after the granules are classified according to the volumes, the granules are selected for proper sintering time according to the sizes of the granules, the sintering effect of corundum is effectively improved, the sintering time is reasonably arranged, energy waste is avoided, and the corundum quality is improved while the cost is saved.
5. The small granular raw materials falling off from the granules are gathered through the fan and the collecting hopper, and are collected through the intercepting box, the filter cover and the collecting box, so that the recycling of the raw materials is realized, the small granular raw materials are blown to the collecting hopper through the gas conveying pipe and the exhaust head, and meanwhile, the raw materials in the sealing cover are quickly dried in the air, so that the overall strength of the raw material granules is improved, and the raw material granules are prevented from being deformed after falling into the collecting box to influence the quality of the sintered corundum;
the air drying process of the granular raw materials is effectively optimized, the screened granules keep the shapes during granulation, and the corundum can still obtain good appearance after sintering.
In conclusion, the corundum raw material is dried, stirred and subjected to impurity removal through the mixing and impurity removal mechanism, the continuous granulating mechanism conducts efficient and high-quality granulation, the screening and air-drying mechanism conducts screening and air-drying on the raw material, the raw material is uniformly mixed, impurities in the raw material are removed, the purity of corundum is improved, the raw material is enabled to form a regular granular structure, the granules are classified and sintered according to the volume, and the overall quality of corundum sintering is effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic workflow diagram of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is a schematic structural diagram of a mixing and impurity removing mechanism of the present invention;
FIG. 5 is a schematic view of the continuous granulating mechanism of the present invention;
FIG. 6 is a schematic view of the internal structure of the mounting bucket of the present invention;
FIG. 7 is a schematic view of the spiral plate mounting structure of the present invention;
FIG. 8 is a schematic structural view of the screening air drying mechanism of the present invention;
FIG. 9 is a schematic view of the exhaust head mounting structure of the present invention;
reference numbers in the figures: 1. a mounting frame;
2. a mixing and impurity removing mechanism; 201. a mixing barrel; 202. a heat-preserving cover; 203. an electric heating ring; 204. a hydraulic lifting rod; 205. a sealing cover; 206. a drive motor; 207. driving the rotating shaft; 208. an upper mounting ring; 209. rotating the rod; 210. turning over the frying plate; 211. a lower mounting ring; 212. installing a pipe; 213. stirring a square rod; 214. a magnetic rod; 215. collecting tank; 216. a discharge pipe; 217. a sealing plate; 218. connecting the cross bars; 219. an electric telescopic rod; 220. a feeding hopper;
3. a continuous granulation mechanism; 301. installing a barrel; 302. an annular chute; 303. a rotating ring; 304. a centrifugal pan; 305. supporting the arc-shaped plate; 306. supporting the long arc plate; 307. a spiral plate; 308 protective plates, 309 and long circular grooves; 310. a support frame; 311. installing a vertical pipe; 312. an annular tube; 313. a water mist spray head; 314. a transfusion tube; 315. an infusion pump; 316. a liquid storage tank;
4. a discharge notch;
5. a screening and air-drying mechanism; 501. a stripper plate; 502. a small-hole sloping plate; 503. a middle hole sloping plate; 504. a large-hole sloping plate; 505. a sealing cover; 506. placing a rack; 507. a collection box; 508. an interception box; 509. a collecting hopper; 510. a fan; 511. an air duct; 512. a filter housing; 513. a collection box; 514. a gas delivery pipe; 515. an exhaust head.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1:
as shown in figure 1, the invention provides a technical scheme that a method for producing sintered corundum comprises the following steps:
s1, mixing the following raw materials: weighing the corundum sintered gamma-Al 2O3, the seawater magnesia, the high bauxite and the additive respectively to ensure that the content of each raw material reaches the specified specific gravity;
s2, mixing the raw materials: mixing and stirring various powdery raw materials to form uniformly distributed mixed raw materials;
s3, granulating and forming: after the binder is sprayed on the mixed raw materials, granulating the mixed raw materials to enable the raw materials to be aggregated to form a granule mechanism;
s4, screening the aggregates: sorting the installation shapes and sizes of the granular structures formed by granulation, and separately collecting and storing granules with different sizes and shapes;
s5, drying the pellets: sending the screened granules into a drying furnace for drying;
s6, sintering corundum: selecting different calcining furnaces for calcining the dried granules according to the sizes of the granules, and sintering the granules of the mixed raw materials to form corundum;
s7, cooling and checking: cooling the sintered corundum, and sampling and inspecting the finished corundum after cooling;
in step S1, the gamma-Al 2O3 is common industrial gamma-Al 2O 3;
in the optimization step S3, the binder is carboxymethyl cellulose, and the content of the carboxymethyl cellulose is 0.3-0.8% of the total mass of gamma-Al 2O3, seawater magnesite and high bauxite;
in step S5, the drying temperature is 450-650 ℃;
example 2:
as shown in fig. 2 to 9, the invention provides a technical scheme, which is used for a corundum production and preparation production line, and the corundum production and preparation production line comprises an installation frame 1, wherein a mixed impurity removing mechanism 2 is arranged at the top end of the installation frame 1;
the mixing and impurity removing mechanism 2 comprises a mixing barrel 201, a heat preservation cover 202, an electric heating ring 203, a hydraulic lifting rod 204, a sealing cover 205, a driving motor 206, a driving rotating shaft 207, an upper mounting ring 208, a rotating rod 209, a stir-frying plate 210, a lower mounting ring 211, a mounting pipe 212, a stirring square rod 213, a magnetic rod 214, a collecting tank 215, a discharging pipe 216, a sealing plate 217, a connecting cross rod 218, an electric telescopic rod 219 and a feeding hopper 220;
a mixing barrel 201 is welded at the top end of the mounting frame 1, a heat-insulating cover 202 is welded at the outer side of the mixing barrel 201, electric heating rings 203 are uniformly and fixedly connected to the inner side of the heat-insulating cover 202 corresponding to the outer side of the mixing barrel 201, and the input ends of the electric heating rings 203 are electrically connected with the output end of a mains supply;
the two sides of the outer part of the heat-insulating cover 202 are symmetrically and fixedly connected with hydraulic lifting rods 204, the top ends of the hydraulic lifting rods 204 are fixedly connected with sealing covers 205, the middle parts of the top ends of the sealing covers 205 are fixedly connected with driving motors 206, the input ends of the driving motors 206 are electrically connected with the output ends of commercial power, and the output shafts of the driving motors 206 are fixedly connected with driving rotating shafts 207 corresponding to the inner sides of the mixing barrels 201;
an upper mounting ring 208 is fixedly connected to the top end of the outer side of the driving rotating shaft 207, a rotating rod 209 is uniformly and fixedly connected to the middle part of the outer side of the upper mounting ring 208 in the circumferential direction, a stir-frying plate 210 is fixedly connected to one end of the outer side of the rotating rod 209, which is far away from the driving rotating shaft 207, a lower mounting ring 211 is fixedly connected to the position of the outer side of the driving rotating shaft 207, which corresponds to the bottom end of the upper mounting ring 208, a rotating rod 209 is uniformly and fixedly connected to the middle part of the outer side of the lower mounting ring 211 in the circumferential direction, a stir-frying plate 210 is fixedly connected to one end of the outer side of the rotating rod 209, which is close to the driving rotating shaft 207, the driving rotating shaft 207 and each part on the outer side are driven by the driving motor 206 to rotate, after corundum production raw materials are added into the mixing barrel 201, the raw materials, meanwhile, as the rotating rod 209 and the stir-frying plate 210 are tightly attached to the inner wall of the mixing barrel 201, the heat of the electric heating ring 203 is rapidly led into the central part of the mixing barrel 201 through the rotating rod 209 and the stir-frying plate 210, so that the raw materials in the mixing barrel 201 are heated more uniformly, and the rapid drying and uniform mixing of the raw materials in the mixing barrel 201 are realized;
the problems that the same raw materials directly form a large-volume aggregate structure in the stirring process of all the production raw materials due to the fact that the inside of all the production raw materials of the corundum is wet, the raw materials inside the aggregate formed in the granulating process of the mixed raw materials are distributed unevenly, and the overall quality of the corundum generated by sintering is reduced are effectively solved, the raw materials can be mixed in a dry powder state, the raw materials are mixed more uniformly, and the production quality of the corundum is improved;
the bottom of the outer side of the driving rotating shaft 207 is fixedly connected with a mounting pipe 212, the outer side of the mounting pipe 212 is uniformly and fixedly connected with a stirring square rod 213 in the circumferential direction, the inner side of the stirring square rod 213 is movably connected with a magnetic rod 214, and the outer side of the stirring square rod 213 is uniformly provided with collecting grooves 215;
a material discharging pipe 216 is fixedly connected to the middle of the bottom end of the mixing barrel 201, a sealing plate 217 is connected to the position, corresponding to the bottom of the mixing barrel 201, of the top of the material discharging pipe 216 through a sliding groove, a connecting cross rod 218 is fixedly connected to the position, corresponding to one side of the outer portion of the material discharging pipe 216, of one end of the sealing plate 217, an electric telescopic rod 219 is fixedly connected to each of two sides, corresponding to the top of the material discharging pipe 216, of each of two ends of each of the connecting cross rods 218, the input end of each electric telescopic rod 219 is electrically connected with the output end of a mains supply, a material adding hopper 220 is fixedly connected to one side of the top of the sealing cover 205, one end of a stir-frying plate 210 on one side of the;
one end of an electric telescopic rod 219 is fixedly connected with a discharging pipe 216, after the raw materials in the mixing barrel 201 are dried and mixed, the mixed raw materials are continuously stirred through a stirring square rod 213 at the bottom of the mixing barrel 201, a small amount of iron powder in the high-alumina bauxite raw material is adsorbed through a magnetic rod 214 in the stirring square rod 213, and meanwhile, the iron powder on the magnetic rod 214 is gathered in a collecting tank 215 under the pushing of the friction of other raw materials, so that the iron powder is prevented from being separated from the magnetic rod 214 due to the impact of other transported materials during discharging, the adsorption capacity of the stirring square rod 213 is improved, the content of iron impurities in the corundum raw materials is effectively reduced, the purity of corundum is improved, and the product quality of the corundum is further improved;
the content of iron impurities mixed in the high-alumina bauxite is effectively reduced, and the integral strength of the iron impurities to corundum is weakened, so that the corundum produced by sintering has good comprehensive performance;
a continuous granulating mechanism 3 is arranged at the position of one side of the mounting rack 1 corresponding to the outlet at the bottom end of the discharge pipe 216;
the continuous granulating mechanism 3 comprises an installation barrel 301, an annular chute 302, a rotating ring 303, a centrifugal disc 304, a support arc-shaped plate 305, a support long arc-shaped plate 306, a spiral plate 307, a protection plate 308, a long circular groove 309, a support frame 310, an installation vertical pipe 311, an annular pipe 312, a water mist spray nozzle 313, a liquid conveying pipe 314, an infusion pump 315 and a liquid storage tank 316;
a mounting barrel 301 is fixedly connected to one side of the mounting rack 1 corresponding to the outlet of the bottom end of the discharging pipe 216, an annular chute 302 is formed in the bottom end of the inner side of the mounting barrel 301, a rotating ring 303 is slidably connected to the inner side of the annular chute 302, a centrifugal disc 304 is fixedly connected to the top end of the rotating ring 303, a supporting arc-shaped plate 305 is uniformly and fixedly connected to the edge of the top end of the centrifugal disc 304, a supporting long arc-shaped plate 306 is fixedly connected to the top end of the supporting arc-shaped plate 305, a spiral plate 307 is fixedly connected to one side of the supporting long;
the top edge part of the mounting barrel 301 is fixedly connected with a supporting frame 310, the middle part of the top end of the supporting frame 310 is fixedly connected with a mounting vertical pipe 311 corresponding to the inner position of the mounting barrel 301, the outer side of the mounting vertical pipe 311 is uniformly and fixedly connected with a mounting vertical pipe 311, the outer side of the mounting vertical pipe 311 is uniformly and fixedly connected with an annular pipe 312 through a pipeline, the outer side of the annular pipe 312 is uniformly and fixedly connected with a water spray nozzle 313, the top end of the mounting vertical pipe 311 is fixedly connected with a liquid conveying pipe 314, the bottom end of the liquid conveying pipe 314 is fixedly connected with a liquid conveying pump 315, the input end of the liquid conveying pump 315 is electrically connected with the commercial power output end, the bottom end of the liquid conveying pump 315 is connected to a liquid storage tank 316 through a conduit, the liquid storage tank 316 is positioned in the middle part of the top end of the mounting barrel 301, long circular grooves 309, the centrifugal disc 304, the supporting arc-shaped plate 305, the supporting long arc-shaped plate 306 and the spiral plate 307 are driven by the motor to rotate along the inner wall of the mounting barrel 301, the adhesive in the liquid storage tank 316 is transported into the mounting vertical pipe 311 through the liquid delivery pump 315, and then is sprayed onto the raw material on the spiral plate 307 through the annular pipe 312 and the water mist spray nozzle 313, the raw material on the spiral plate 307 is changed into a regular granule mechanism through the interaction of the mounting barrel 301 and the spiral plate 307, and meanwhile, due to the special structural design of the spiral plate 307, the continuous granulation mechanism 3 can continuously generate high-quality granules, so that the processing efficiency and the processing quality of corundum raw material granules are improved;
the problems of intermittent feeding and irregular pellet appearance in the traditional granulation process are effectively avoided, so that the corundum raw material can form a regular pellet mechanism;
a discharging notch 4 is formed in one side of the mounting barrel 301 corresponding to the top end of the centrifugal disc 304, and a screening and air-drying mechanism 5 is arranged in one side of the mounting barrel 301 corresponding to the edge of the discharging notch 4;
the screening and air-drying mechanism 5 comprises a discharge plate 501, a small-hole inclined plate 502, a middle-hole inclined plate 503, a large-hole inclined plate 504, a sealing cover 505, a placing frame 506, a collecting box 507, an intercepting box 508, a collecting hopper 509, a fan 510, an air duct 511, a filter cover 512, a collecting box 513, an air conveying pipe 514 and an exhaust head 515;
a discharge plate 501 is fixedly connected to one side of the mounting barrel 301 corresponding to the position of the edge of the discharge notch 4, a small-hole inclined plate 502 is fixedly connected to one end of the discharge plate 501, a medium-hole inclined plate 503 is fixedly connected to one end of the small-hole inclined plate 502, a large-hole inclined plate 504 is fixedly connected to one end of the medium-hole inclined plate 503, seal covers 505 are fixedly connected to the tops of the discharge plate 501, the small-hole inclined plate 502, the medium-hole inclined plate 503 and the large-hole inclined plate 504, a placing frame 506 is fixedly connected to the discharge plate 501, the small-hole inclined plate 502, the medium-hole inclined plate 503 and the large-hole inclined;
the inner side of the placing frame 506 is fixedly connected with an intercepting box 508 corresponding to the bottom of the discharging plate 501, the top of the sealing cover 505 corresponding to the top of the discharging plate 501 is fixedly connected with a collecting hopper 509, the top of the collecting hopper 509 is fixedly connected with a fan 510, the input end of the fan 510 is electrically connected with the output end of commercial power, the air outlet end of the fan 510 is fixedly connected with an air duct 511, the air duct 511 is connected to the top of the intercepting box 508, the top of one side inside the intercepting box 508 is fixedly connected with a filter cover 512, the bottom of the inner side of the intercepting box 508 is provided with a collecting box 513, after raw material granules are discharged from the discharging groove opening 4 to the discharging plate 501, the granules passing through the small hole inclined plate 502, the middle hole inclined plate 503 and the large hole inclined plate 504 are sequentially rolled by the guiding of the discharging plate 501, the granules passing through the small hole, then respectively sintering the granules with different sizes;
the method effectively avoids the phenomenon of uneven quality when the granules with different volumes are sintered simultaneously, and simultaneously, due to different sintering time of the granules with different sizes, after the granules are classified according to the volumes, the granules are selected according to the sizes of the granules, so that the sintering effect of the corundum is effectively improved, the sintering time is reasonably arranged, the waste of energy is avoided, and the quality of the corundum is improved while the cost is saved;
the middle position of one end of the interception box 508 corresponding to the filter cover 512 is fixedly connected with an air pipe 514, one end of the air pipe 514 corresponding to the bottom of the seal cover 505 is fixedly connected with an exhaust head 515, the bottom end plane in the discharge slot 4 is flush with the top end plane of the centrifugal disc 304, the distance between the exhaust port of the exhaust head 515 and the top end plane of the large-hole inclined plate 504 is larger than the diameter of a leak hole on the large-hole inclined plate 504, in the process that raw material granules roll on the discharge plate 501, under the action of the fan 510, small particle raw materials falling off from the granules are gathered through the collection hopper 509, the small particle raw materials are collected through the interception box 508, the filter cover 512 and the collection box 513, so that the recycling of the raw materials is realized, the small particle raw materials are blown to the collection hopper through the air pipe 514 and the exhaust head 515, meanwhile, the raw materials in the seal cover 505, the corundum is prevented from being deformed after falling into the collecting box 507, so that the quality of the sintered corundum is influenced;
the air drying process of the granular raw materials is effectively optimized, the screened granules keep the shapes during granulation, and the corundum can still obtain good appearance after sintering.
The working principle and the using process of the invention are as follows: in the practical application process, the driving motor 206 drives the driving rotating shaft 207 and all parts outside the driving rotating shaft to rotate, after corundum production raw materials are added into the mixing barrel 201, the raw materials in the mixing barrel 201 are heated through the heat-insulating cover 202 and the electric heating ring 203, the raw materials in the mixing barrel 201 are stir-fried through the rotating rod 209 and the stir-frying plate 210 on the upper mounting ring 208 and the lower mounting ring 211, and meanwhile, as the rotating rod 209 and the stir-frying plate 210 are tightly attached to the inner wall of the mixing barrel 201, the heat of the electric heating ring 203 is rapidly led into the central part of the mixing barrel 201 through the rotating rod 209 and the stir-frying plate 210, so that the raw materials in the mixing barrel 201 are heated more uniformly, and the rapid drying and uniform mixing of the raw materials in the mixing barrel 201 are realized;
the problems that the same raw materials directly form a large-volume aggregate structure in the stirring process of all the production raw materials due to the fact that the inside of all the production raw materials of the corundum is wet, the raw materials inside the aggregate formed in the granulating process of the mixed raw materials are distributed unevenly, and the overall quality of the corundum generated by sintering is reduced are effectively solved, the raw materials can be mixed in a dry powder state, the raw materials are mixed more uniformly, and the production quality of the corundum is improved;
after the raw materials in the mixing barrel 201 are dried and mixed, the mixed raw materials are continuously stirred through the stirring square rod 213 at the bottom of the mixing barrel 201, a small amount of iron powder in the high alumina bauxite raw material is adsorbed through the magnetic rod 214 in the stirring square rod 213, and meanwhile, the iron powder on the magnetic rod 214 is gathered in the collecting tank 215 under the pushing of the friction of other raw materials, so that the iron powder is prevented from being separated from the magnetic rod 214 due to the impact of other transported materials during discharging, the adsorption capacity of the stirring square rod 213 is improved, the content of iron impurities in the corundum raw material is effectively reduced, the purity of corundum is improved, and the product quality of corundum is further improved;
the content of iron impurities mixed in the high-alumina bauxite is effectively reduced, the integral strength of the iron impurities to the corundum is weakened, and the corundum produced by sintering has good comprehensive performance.
After the raw materials are mixed and purified, the sealing plate 217 and the connecting cross rod 218 are pushed to one side of the discharge pipe 216 through the electric telescopic rod 219, so that the discharge pipe 216 is communicated with the mixing barrel 201, and the raw materials in the mixing barrel 201 are discharged from the bottom of the discharge pipe 216;
after raw materials enter the top of the spiral plate 307 in the installation barrel 301 from the bottom of the discharge pipe 216, the centrifugal disc 304, the support arc-shaped plate 305, the support long arc-shaped plate 306 and the spiral plate 307 are driven by the motor to rotate along the inner wall of the installation barrel 301, the adhesive in the liquid storage tank 316 is transported into the installation vertical pipe 311 through the liquid conveying pump 315, and then the adhesive is sprayed onto the raw materials on the spiral plate 307 through the annular pipe 312 and the water mist spray nozzle 313, the raw materials on the spiral plate 307 are changed into a regular granule mechanism through the interaction of the installation barrel 301 and the spiral plate 307, and meanwhile, due to the special structural design of the spiral plate 307, the continuous granulation mechanism 3 can continuously generate high-quality granules, so that the processing efficiency and the processing quality of corundum raw material granules are improved;
the problems of intermittent feeding and irregular pellet appearance in the traditional granulation process are effectively avoided, so that the corundum raw material can form a regular pellet mechanism;
raw materials on the spiral plate 307 cling to the installation barrel 301 under the action of centrifugal force in the rotation process of the spiral plate 307, the raw materials close to the inner wall of the installation barrel 301 are gradually gathered to generate a small-volume pellet structure along with the rotation of the spiral plate 307, the volume of the pellet mechanisms is gradually increased along with the continuous rotation of the spiral plate 307, the pellets with regular shapes roll down to the centrifugal disc 304 along the top of the spiral plate 307 under the action of gravity and are discharged from the discharge slot 4 under the action of centrifugal force along with the round shape and the increase of the volume of the pellets;
after raw material granules are discharged from a discharge notch 4 to a discharge plate 501, the more transported granules are sequentially rolled by a small-hole inclined plate 502, a medium-hole inclined plate 503 and a large-hole inclined plate 504 under the guidance of the discharge plate 501, the granules passing through the small-hole inclined plate 502, the medium-hole inclined plate 503 and the large-hole inclined plate 504 are respectively collected by a collection box 507, so that the raw material granules with different volumes are classified, and then the granules with different sizes are respectively sintered;
the method effectively avoids the phenomenon of uneven quality when the granules with different volumes are sintered simultaneously, and simultaneously, due to different sintering time of the granules with different sizes, after the granules are classified according to the volumes, the granules are selected according to the sizes of the granules, so that the sintering effect of the corundum is effectively improved, the sintering time is reasonably arranged, the waste of energy is avoided, and the quality of the corundum is improved while the cost is saved;
in the process that raw material granules roll on the discharging plate 501, under the action of the fan 510, small granular raw materials falling off from the granules are gathered through the collecting hopper 509, and are collected through the intercepting box 508, the filter cover 512 and the collecting box 513, so that the raw materials are recycled, the small granular raw materials are blown to the collecting hopper through the air conveying pipe 514 and the air exhaust head 515, meanwhile, the raw materials in the sealing cover 505 are quickly air-dried 509, the overall strength of the raw material granules is improved, the raw material granules are prevented from being deformed after falling into the collecting box 507, and the quality of the sintered corundum is influenced;
the air drying process of the granular raw materials is effectively optimized, the screened granules keep the shapes during granulation, and the corundum can still obtain good appearance after sintering.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A production method of sintered corundum is characterized by comprising the following steps:
s1, mixing the following raw materials: weighing the corundum sintered gamma-Al 2O3, the seawater magnesia, the high bauxite and the additive respectively to ensure that the content of each raw material reaches the specified specific gravity;
s2, mixing the raw materials: mixing and stirring various powdery raw materials to form uniformly distributed mixed raw materials;
s3, granulating and forming: after the binder is sprayed on the mixed raw materials, granulating the mixed raw materials to enable the raw materials to be aggregated to form a granule mechanism;
s4, screening the aggregates: sorting the installation shapes and sizes of the granular structures formed by granulation, and separately collecting and storing granules with different sizes and shapes;
s5, drying the pellets: feeding the sieved granules into a drying furnace for drying
S6, sintering corundum: selecting different calcining furnaces for calcining the dried granules according to the sizes of the granules, and sintering the granules of the mixed raw materials to form corundum;
s7, cooling and checking: and cooling the sintered corundum, and sampling and inspecting the finished corundum after cooling.
2. The method for producing sintered corundum according to claim 1, wherein in step S1, the γ -Al2O3 is conventional industrial γ -Al2O 3.
3. The method for producing sintered corundum according to claim 1, wherein in step S3, the binder is carboxymethyl cellulose, and the content of carboxymethyl cellulose is 0.3% -0.8% of the total mass of γ -Al2O3, seawater magnesite and bauxite.
4. The method for producing sintered corundum according to claim 1, wherein the drying temperature in step S5 is 450-650 ℃.
5. A corundum production and preparation production line used in the production method of the sintered corundum according to any one of the claims 1 to 4, characterized by comprising a mounting frame (1), wherein the top end of the mounting frame (1) is provided with a mixed impurity removing mechanism (2);
the mixing and impurity removing mechanism (2) comprises a mixing barrel (201), a heat-insulating cover (202), an electric heating ring (203), a hydraulic lifting rod (204), a sealing cover (205), a driving motor (206), a driving rotating shaft (207), an upper mounting ring (208), a rotating rod (209), a stir-frying plate (210), a lower mounting ring (211), a mounting pipe (212), a stirring square rod (213), a magnetic rod (214), a collecting tank (215), a discharging pipe (216), a sealing plate (217), a connecting cross rod (218), an electric telescopic rod (219) and a feeding hopper (220);
a mixing barrel (201) is welded at the top end of the mounting rack (1), a heat-insulating cover (202) is welded at the outer side of the mixing barrel (201), electric heating rings (203) are uniformly and fixedly connected to the inner side of the heat-insulating cover (202) corresponding to the outer side of the mixing barrel (201), and the input ends of the electric heating rings (203) are electrically connected with the output end of a mains supply;
the heat preservation cover (202) is characterized in that hydraulic lifting rods (204) are symmetrically and fixedly connected to two sides of the outer portion of the heat preservation cover (202), a sealing cover (205) is fixedly connected to the top end of each hydraulic lifting rod (204), a driving motor (206) is fixedly connected to the middle of the top end of each sealing cover (205), the input end of each driving motor (206) is electrically connected with the output end of a mains supply, and a driving rotating shaft (207) is fixedly connected to the position, corresponding to the inner side of the mixing barrel (201), of the output shaft of each driving motor;
the top end of the outer side of the driving rotating shaft (207) is fixedly connected with an upper mounting ring (208), the middle part of the outer side of the upper mounting ring (208) is uniformly and fixedly connected with a rotating rod (209) in the circumferential direction, one end of the outer side of the rotating rod (209), which is far away from the driving rotating shaft (207), is fixedly connected with a stir-frying plate (210), the position, corresponding to the bottom end of the upper mounting ring (208), of the outer side of the driving rotating shaft (207) is fixedly connected with a lower mounting ring (211), the middle part of the outer side of the lower mounting ring (211) is uniformly and fixedly connected with the rotating rod (209) in the circumferential direction, and one end of the outer side;
the bottom of the outer side of the driving rotating shaft (207) is fixedly connected with a mounting pipe (212), stirring square rods (213) are uniformly and fixedly connected to the circumferential direction of the outer side of the mounting pipe (212), magnetic rods (214) are movably connected to the inner side of each stirring square rod (213), and collecting grooves (215) are uniformly formed in the outer side of each stirring square rod (213);
mix bucket (201) bottom middle part fixedly connected with arranges material pipe (216), it is connected with closing plate (217) through the spout to arrange material pipe (216) top and correspond mix bucket (201) bottom position department, closing plate (217) one end corresponds row material pipe (216) outside one side position department fixedly connected with and connects horizontal pole (218), connect horizontal pole (218) both ends and correspond row material pipe (216) top both sides equal fixedly connected with electric telescopic handle (219), the input of electric telescopic handle (219) and the output electric connection of commercial power have, sealed lid (205) top one side fixedly connected with adds hopper (220).
6. The corundum production and preparation production line according to claim 5, characterized in that one end of the stir-frying plate (210) at one side of the upper mounting ring (208) is closely attached to the inner wall of the mixing barrel (201), one end of the rotating rod (209) at one side of the lower mounting ring (211) is closely attached to the inner wall of the mixing barrel (201), and the stir-frying plate (210) and the rotating rod (209) are movably connected;
one end of the electric telescopic rod (219) is fixedly connected with the discharge pipe (216).
7. A production line for producing and preparing corundum according to claim 5, characterized in that a continuous granulating mechanism (3) is arranged on one side of the mounting frame (1) corresponding to the outlet position of the bottom end of the discharge pipe (216);
the continuous granulating mechanism (3) comprises an installation barrel (301), an annular sliding chute (302), a rotating ring (303), a centrifugal disc (304), a supporting arc-shaped plate (305), a supporting long arc-shaped plate (306), a spiral plate (307), a protective plate (308), a long circular groove (309), a supporting frame (310), an installation vertical pipe (311), an annular pipe (312), a water mist spray head (313), a liquid conveying pipe (314), an infusion pump (315) and a liquid storage tank (316);
an installation barrel (301) is fixedly connected to one side of the installation frame (1) corresponding to the position of an outlet at the bottom end of the discharging pipe (216), an annular sliding groove (302) is formed in the bottom end of the inner side of the installation barrel (301), a rotating ring (303) is slidably connected to the inner side of the annular sliding groove (302), a centrifugal disc (304) is fixedly connected to the top end of the rotating ring (303), a supporting arc plate (305) is uniformly and fixedly connected to the edge of the top end of the centrifugal disc (304), a supporting long arc plate (306) is fixedly connected to the top end of the supporting arc plate (305), a spiral plate (307) is fixedly connected to one side of the supporting long arc plate (306), and a protection plate (308) is;
installing bucket (301) top limit portion fixedly connected with support frame (310), support frame (310) top middle part corresponds installing bucket (301) inside position department fixedly connected with installation standpipe (311), the even fixedly connected with installation standpipe (311) in installation standpipe (311) outside, the even fixedly connected with ring pipe (312) of pipeline is passed through in installation standpipe (311) outside, the even fixedly connected with water smoke shower nozzle (313) in ring pipe (312) outside, installation standpipe (311) top fixedly connected with transfer line (314), transfer line (314) bottom fixedly connected with transfer pump (315), the input and the commercial power output end electric connection of transfer pump (315), transfer pump (315) bottom is through pipe connection to liquid reserve tank (316), liquid reserve tank (316) are located installing bucket (301) top middle part.
8. The production line for producing and preparing corundum according to claim 7, characterized in that the centrifugal disc (304) and the spiral plate (308) are uniformly provided with a long circular groove (309) at the top, the side surface is tightly attached to the inner wall of the installation barrel (301), and the infusion pump (315) is fixedly connected to one side of the liquid storage tank (316) through a bolt.
9. The production line for producing and preparing corundum according to claim 7, characterized in that a discharging notch (4) is formed in one side of the installation barrel (301) corresponding to the top end of the centrifugal disc (304), and a screening and air-drying mechanism (5) is arranged in one side of the installation barrel (301) corresponding to the edge of the discharging notch (4);
the screening and air-drying mechanism (5) comprises a discharge plate (501), a small-hole inclined plate (502), a middle-hole inclined plate (503), a large-hole inclined plate (504), a sealing cover (505), a placing frame (506), a collecting box (507), an intercepting box (508), a collecting hopper (509), a fan (510), an air duct (511), a filtering cover (512), a collecting box (513), an air conveying pipe (514) and an air exhaust head (515);
the device comprises a mounting barrel (301), wherein a discharging plate (501) is fixedly connected to the position, corresponding to the edge of a discharging notch (4), of one side of the mounting barrel (301), one end of the discharging plate (501) is fixedly connected with a small-hole inclined plate (502), one end of the small-hole inclined plate (502) is fixedly connected with a medium-hole inclined plate (503), one end of the medium-hole inclined plate (503) is fixedly connected with a large-hole inclined plate (504), the tops of the discharging plate (501), the small-hole inclined plate (502), the medium-hole inclined plate (503) and the large-hole inclined plate (504) are fixedly connected with sealing covers (505), the discharging plate (501), the small-hole inclined plate (502), the medium-hole inclined plate (503) and the large-hole inclined plate (504) are fixedly connected with a placing frame (506), and a;
the inner side of the placing frame (506) is fixedly connected with an intercepting box (508) corresponding to the bottom of the discharging plate (501), the top end of the sealing cover (505) is fixedly connected with a collecting hopper (509) corresponding to the top of the discharging plate (501), the top end of the collecting hopper (509) is fixedly connected with a fan (510), the input end of the fan (510) is electrically connected with the output end of a mains supply, the air outlet end of the fan (510) is fixedly connected with an air duct (511), the air duct (511) is connected to the top of the intercepting box (508), the top end of one side inside the intercepting box (508) is fixedly connected with a filter cover (512), and a collecting box (513) is placed at the bottom of the;
one side of the intercepting box (508) corresponds to the middle position of one end of the filter cover (512) and is fixedly connected with an air conveying pipe (514), and one end of the air conveying pipe (514) corresponds to one end of the bottom of the sealing cover (505) and is fixedly connected with an exhaust head (515).
10. The production line for producing and preparing corundum according to claim 9, characterized in that the bottom end plane inside the discharge slot (4) is flush with the top end plane of the centrifugal disc (304), and the distance between the exhaust port of the exhaust head (515) and the top end plane of the large-hole inclined plate (504) is larger than the diameter of a leakage hole on the large-hole inclined plate (504).
CN202010482421.8A 2020-06-01 2020-06-01 Production line for preparing sintered corundum Active CN111574205B (en)

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CN112236026A (en) * 2020-09-30 2021-01-15 扬州斯帕克实业有限公司 Graphene composite wave-absorbing preparation device and coating agent prepared by using same
CN113578148A (en) * 2021-08-03 2021-11-02 江苏省农垦生物化学有限公司 Production equipment and production method of aqueous pesticide

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CN103833392A (en) * 2014-01-03 2014-06-04 浙江自立氧化铝材料科技有限公司 Preparation method for sintered corundum
CN103936440A (en) * 2014-03-28 2014-07-23 浙江自立氧化铝材料科技有限公司 Preparation method of sintered corundum with good wear resistance
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CN112236026A (en) * 2020-09-30 2021-01-15 扬州斯帕克实业有限公司 Graphene composite wave-absorbing preparation device and coating agent prepared by using same
CN112236026B (en) * 2020-09-30 2022-05-06 扬州斯帕克实业有限公司 Graphene composite wave-absorbing preparation device and coating agent prepared by using same
CN113578148A (en) * 2021-08-03 2021-11-02 江苏省农垦生物化学有限公司 Production equipment and production method of aqueous pesticide

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