CN212292840U - Alpha-alumina micropowder production equipment for microcrystal high alumina ball stone and lining brick - Google Patents
Alpha-alumina micropowder production equipment for microcrystal high alumina ball stone and lining brick Download PDFInfo
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- CN212292840U CN212292840U CN202021111415.3U CN202021111415U CN212292840U CN 212292840 U CN212292840 U CN 212292840U CN 202021111415 U CN202021111415 U CN 202021111415U CN 212292840 U CN212292840 U CN 212292840U
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Abstract
The utility model discloses a microcrystal high alumina ballstone and lining brick are with alpha-alumina miropowder production facility, cyclone preheater erectsThe cyclone preheater is fixedly arranged on the plurality of brackets; the outlet end of the feeding hopper is connected with the rotary dryer, the upper part of one end of the rotary dryer is connected with the additive adding pipe, the other end of the rotary dryer is connected with the grinding machine, the discharge port end of the grinding machine is connected with the preheating chamber, the bottom of the preheating chamber is connected with the lifting machine, the upper end of the lifting machine is connected with the cyclone preheater, the lower end of the cyclone preheater is connected with the calcining kiln, one end of the calcining kiln is connected with the drum cooler, the side wall of the drum cooler is connected with the hot air pipe. Solving the problems of Al (OH)3Is not easy to be prepared into alpha alumina micropowder.
Description
Technical Field
The utility model relates to the technical field of alumina micropowder production, in particular to alpha-alumina micropowder production equipment for microcrystal high alumina ballstone and lining bricks.
Background
The molecular formula of the alumina micropowder is Al2O3High-purity crystal obtained by high-temp. melting and recrystallization in electric arc furnace, its colour is white, chemical stability is good and hardness is 2200Kg/mm2The microhardness is 7.5, the toughness is low, and the abrasive particles are easy to break during grinding and polishing. Because the heating value is small during grinding, the grinding wheel is suitable for grinding fire steel, high-carbon steel, high-speed steel, thin-wall parts and the like, and is suitable for grinding and polishing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a alpha-alumina micropowder production facility for microcrystal high alumina ball stone and lining brick, solve Al (OH)3Is not easy to be prepared into alpha-alumina micro powder.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an alpha-alumina micro powder production device for microcrystal high alumina ballstones and lining bricks comprises; a feed hopper, a rotary dryer, an additive adding pipe, a grinder, a preheating chamber, a lifter, a cyclone preheater, a bracket, a calcining kiln, a cylinder type cooler and a hot air pipe;
the cyclone preheater is vertically arranged and is fixedly arranged on the plurality of brackets;
the outlet end of the feeding hopper is connected with the rotary dryer, the upper part of one end of the rotary dryer is connected with the additive adding pipe, the other end of the rotary dryer is connected with the grinding machine, the discharge port end of the grinding machine is connected with the preheating chamber, the bottom of the preheating chamber is connected with the lifting machine, the upper end of the lifting machine is connected with the cyclone preheater, the lower end of the cyclone preheater is connected with the calcining kiln, one end of the calcining kiln is connected with the drum cooler, the side wall of the drum cooler is connected with the hot air pipe.
Further, the method comprises the following steps of; the rotary dryer is horizontally arranged, a discharge port of the rotary dryer is connected with a feed port of the grinding mill, a discharge port at the lower end of the grinding mill is connected with the preheating chamber, a preheating pipe is arranged on the inner side wall of the preheating chamber and is communicated with a hot air pipe, the preheating pipe is arranged in a conical spiral mode, the conical lower end of the preheating pipe is large, the conical upper end of the preheating pipe is small, and an air hole is formed in the lower wall of the upper end of the preheating pipe;
the calcining kiln and the drum cooler are connected in parallel up and down.
Further, the method comprises the following steps of; the hot air pipe is connected with an exhaust fan, and the side wall of the hot air pipe is wrapped with a heat insulation layer.
Further, the method comprises the following steps of; an air inlet pipe is connected in the cyclone preheater, an air blower is arranged on the air inlet pipe, and the upper end of the cyclone preheater is connected with an air outlet pipe.
Further, the method comprises the following steps of; and the tail end of the barrel type cooling machine is provided with a collecting box.
Further, the method comprises the following steps of; the rotary dryer, the grinder, the preheating chamber, the elevator, the calcining kiln and the barrel type cooler are all arranged on the fixing frame;
the height of the fixing frame at the calcining kiln and the roller type cooler is lower than that of the fixing frame at the positions of the rotary dryer and the preheating chamber of the grinding machine.
Further, the method comprises the following steps of; the method comprises the following steps:
a1 raw material selection: al (OH) with a selected sieving grain size of less than 400 meshes3Raw materials;
a2 production flow: al (OH)3The raw materials enter a rotary dryer through a feed hopper, the temperature in the rotary dryer is set to be 50-300 ℃, and then the raw materials enter a grinder to be ground to Al (OH)3The particle size of the raw materials is less than 1000 meshes, the raw materials enter a preheating chamber for preheating, the preheated raw materials are lifted and transported to a cyclone preheater by a lifter, the temperature in the cyclone preheater is 100-plus-500 ℃, the raw materials in the cyclone preheater move from top to bottom, the gas entering the cyclone preheater moves from bottom to top, the raw materials enter a calcining kiln, the temperature in the calcining kiln is 500-plus-1300 ℃, alpha-alumina micro powder for microcrystalline high-alumina ballstones and lining bricks is obtained after calcining, the calcined raw materials are finally cooled to normal temperature by a drum cooler, and the temperature of the calcining kiln is higher than that of the cyclone preheaterThe temperature of the heat exchanger and the temperature of the cyclone preheater are higher than that of the rotary dryer;
a3 warehouse entry: and cooling the calcined product, collecting, warehousing and storing.
Further, the method comprises the following steps of; the rotary dryer is added with an additive through an additive adding pipe, the additive is one or more of boric acid, aluminum fluoride and ammonium chloride, and the additive and Al (OH)3The mass ratio of (A) to (B) is as follows: 0.2-1:100.
Further, the method comprises the following steps of; the rotary dryer may add the additive without an additive addition pipe.
Further, the method comprises the following steps of; the time of the whole production process is 20-180 min.
Compared with the prior art, the utility model discloses an at least, have one of following beneficial effect:
1、Al(OH)3the raw materials enter a rotary dryer through a feed hopper, and the rotary dryer is used for drying Al (OH)3Drying the raw materials, grinding the dried raw materials to obtain Al (OH)3The raw materials are preferably ground and dried Al (OH)3The raw material enters a grinding machine at a certain temperature, and the temperature is increased by Al (OH)3The activity of the raw materials is convenient for grinding, the raw materials enter a preheating chamber after being ground and are further preheated, and the preheated raw materials enter a cyclone preheater through a lifter, wherein the cyclone preheater Al (OH)3Mixing the raw materials with hot air for better preheating, and preheating Al (OH)3The raw materials enter a calcining kiln for high-temperature calcination to obtain a product, and the product is cooled to normal temperature by a drum cooler.
2. The hot air when the cylinder type cooling machine is used for cooling is input into the preheating chamber through the hot air pipe, the hot air pipe is connected with the preheating pipe, the conical spiral arrangement of the preheating pipe plays a preheating role, and the spiral arrangement of the preheating pipe can also disperse Al (OH)3The raw materials are convenient to preheat, and the waste of heat is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the middle cyclone preheater of the present invention.
Fig. 3 is a schematic structural view of the preheating chamber of the present invention.
In the figure: the device comprises a feed hopper (1), a rotary dryer (2), an additive adding pipe (3), a grinding mill (4), a preheating chamber (5), a hoisting machine (6), a cyclone preheater (7), a support (8), a calcining kiln (9), a cylinder type cooling machine (10), a hot air pipe (11), a preheating pipe (12), an exhaust fan (13), a heat preservation layer (14), an air inlet pipe (15), a blower (16), an air outlet pipe (17), a collecting box (18) and a fixing frame (19).
Detailed Description
Fig. 1 to 3 illustrate the present invention, and in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
an alpha-alumina micro powder production device for microcrystal high alumina ballstones and lining bricks comprises; the device comprises a feed hopper 1, a rotary dryer 2, an additive adding pipe 3, a grinder 4, a preheating chamber 5, a lifter 6, a cyclone preheater 7, a bracket 8, a calcining kiln 9, a barrel type cooler 10 and a hot air pipe 11;
the cyclone preheater 7 is vertically arranged, and the cyclone preheater 7 is fixedly arranged on the plurality of brackets 8;
the outlet end of a feed hopper 1 is connected with a rotary dryer 2, the upper part of one end of the rotary dryer 2 is connected with an additive adding pipe 3, the other end of the rotary dryer 2 is connected with a grinder 4, the discharge port end of the grinder 4 is connected with a preheating chamber 5, the bottom of the preheating chamber 5 is connected with a lifter 6, the upper end of the lifter 6 is connected with a cyclone preheater 7, the lower end of the cyclone preheater 7 is connected with a calcining kiln 9, one end of the calcining kiln 9 is connected with a drum cooler 10, the side wall of the drum cooler 10 is connected with a hot air pipe 11, and the tail end; al (OH)3The raw materials enter a rotary dryer 2 from a feed hopper 1, and the rotary dryer 2 comprises Al (OH)3Drying the raw materials, grinding the dried raw materials to obtain Al (OH)3The raw materials are preferably ground and dried Al (OH)3The raw materials have a certain degreeThe temperature is fed into the mill 4, the temperature is increased by Al (OH)3The activity of the raw materials is convenient for grinding, the raw materials enter a preheating chamber 5 after grinding and are further preheated, the preheated raw materials enter a cyclone preheater 7 through a lifter 6, and the cyclone preheater 7Al (OH)3Mixing the raw materials with hot air for better preheating, and preheating Al (OH)3The raw materials enter a calcining kiln 9 for high-temperature calcination to obtain a product, and the product is cooled to normal temperature by a roller cooler 10.
Example 2:
on the basis of the embodiment 1, the rotary dryer 2 is horizontally arranged, a discharge port of the rotary dryer 2 is connected with a feed port of the grinder 4, a discharge port at the lower end of the grinder 4 is connected with the preheating chamber 5, a preheating pipe 12 is arranged on the inner side wall of the preheating chamber 5, the preheating pipe 12 is communicated with a hot air pipe 11, the preheating pipe 12 is arranged in a conical spiral mode, the conical lower end of the preheating pipe 12 is large, the upper end of the preheating pipe 12 is small, and the lower wall of the upper end of the preheating pipe 12 is provided with an air;
the calcining kiln 9 is connected with the drum-type cooler 10 in parallel up and down; the hot air when the cylinder type cooling machine 10 cools is input into the preheating chamber 5 through the hot air pipe 11, the hot air pipe 11 is connected with the preheating pipe 12, the conical spiral arrangement of the preheating pipe 12 plays a preheating role, the spiral arrangement of the preheating pipe 12 can also disperse Al (OH)3The raw materials are convenient to preheat, and the waste of heat is reduced.
Example 3:
on the basis of the embodiment 1-2, the hot air pipe 11 is connected with the exhaust fan 13, and the side wall of the hot air pipe 11 is wrapped with the heat insulation layer 14; the insulating layer 14 serves as a heat-insulating function.
Example 4:
on the basis of the embodiment 1-3, an air inlet pipe 15 is connected in the cyclone preheater 7, a blower 16 is arranged on the air inlet pipe 15, and an air outlet pipe 17 is connected at the upper end of the cyclone preheater 7; the cyclone preheater 7 is convenient for the air to enter for heating.
Example 5:
on the basis of the embodiments 1 to 4, the collection box 18 is provided at the end of the barrel cooler 10 to facilitate the collection of the product.
Example 6:
on the basis of examples 1 to 5, the rotary dryer 2, the grinding mill 4, the preheating chamber 5, the elevator 6, the calcining kiln 9, and the drum cooler 10 were all disposed on the fixing frame 19;
the height of the fixing frame 19 at the calcining kiln 9 and the roller cooler 10 is lower than that of the fixing frame 19 at the rotary dryer 2, the grinding mill 4 and the preheating chamber 5; the fixing frame 19 is arranged to play a supporting role.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (6)
1. The utility model provides a alpha-alumina miropowder production facility is used to micrite high alumina ball stone and lining brick which characterized in that: comprises the following steps of; the device comprises a feed hopper (1), a rotary dryer (2), an additive adding pipe (3), a grinder (4), a preheating chamber (5), a lifter (6), a cyclone preheater (7), a bracket (8), a calcining kiln (9), a barrel type cooler (10) and a hot air pipe (11);
the cyclone preheater (7) is vertically arranged, and the cyclone preheater (7) is fixedly arranged on the plurality of brackets (8);
the outlet end of the feeding hopper (1) is connected with the rotary dryer (2), the upper part of one end of the rotary dryer (2) is connected with the additive adding pipe (3), the other end of the rotary dryer (2) is connected with the grinder (4), the discharge port end of the grinder (4) is connected with the preheating chamber (5), the bottom of the preheating chamber (5) is connected with the elevator (6), the upper end of the elevator (6) is connected with the cyclone preheater (7), the lower end of the cyclone preheater (7) is connected with the calcining kiln (9), one end of the calcining kiln (9) is connected with the barrel type cooler (10), the side wall of the barrel type cooler (10) is connected with the hot air pipe (11), and the tail end of.
2. The alpha-alumina micropowder production equipment for microcrystalline high alumina ballstones and lining bricks according to claim 1, which is characterized in that: the rotary dryer (2) is horizontally arranged, a discharge hole of the rotary dryer (2) is connected with a feed inlet of the grinding machine (4), a discharge hole at the lower end of the grinding machine (4) is connected with the preheating chamber (5), a preheating pipe (12) is arranged on the inner side wall of the preheating chamber (5), the preheating pipe (12) is communicated with a hot air pipe (11), the preheating pipe (12) is spirally arranged in a conical shape, the conical lower end of the preheating pipe (12) is large, the upper end of the preheating pipe (12) is small, and an air hole is formed in the lower wall of the upper end of the preheating pipe (;
the calcining kiln (9) and the barrel type cooler (10) are connected in parallel up and down.
3. The alpha-alumina micropowder production equipment for microcrystalline high alumina ballstones and lining bricks according to claim 1, which is characterized in that: an exhaust fan (13) is connected to the hot air pipe (11), and a heat insulation layer (14) is wrapped on the side wall of the hot air pipe (11).
4. The alpha-alumina micropowder production equipment for microcrystalline high alumina ballstones and lining bricks according to claim 1, which is characterized in that: an air inlet pipe (15) is connected in the cyclone preheater (7), a blower (16) is arranged on the air inlet pipe (15), and an air outlet pipe (17) is connected at the upper end of the cyclone preheater (7).
5. The alpha-alumina micropowder production equipment for microcrystalline high alumina ballstones and lining bricks according to claim 1, which is characterized in that: the tail end of the barrel type cooler (10) is provided with a collecting box (18).
6. The alpha-alumina micropowder production equipment for microcrystalline high alumina ballstones and lining bricks according to claim 1, which is characterized in that: the rotary dryer (2), the grinder (4), the preheating chamber (5), the elevator (6), the calcining kiln (9) and the barrel type cooler (10) are all arranged on a fixed frame (19);
the height of the fixing frame (19) at the calcining kiln (9) and the barrel type cooler (10) is lower than the height of the fixing frame (19) at the rotary type dryer (2), the grinding machine (4) and the preheating chamber (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021111415.3U CN212292840U (en) | 2020-06-16 | 2020-06-16 | Alpha-alumina micropowder production equipment for microcrystal high alumina ball stone and lining brick |
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| CN202021111415.3U CN212292840U (en) | 2020-06-16 | 2020-06-16 | Alpha-alumina micropowder production equipment for microcrystal high alumina ball stone and lining brick |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807398A (en) * | 2020-06-16 | 2020-10-23 | 汝州市小微结构陶瓷有限公司 | Production process of alpha-alumina micropowder for microcrystal high alumina ball stone and lining brick |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807398A (en) * | 2020-06-16 | 2020-10-23 | 汝州市小微结构陶瓷有限公司 | Production process of alpha-alumina micropowder for microcrystal high alumina ball stone and lining brick |
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