CN110947339A - Ceramic raw material suspension granulation equipment - Google Patents
Ceramic raw material suspension granulation equipment Download PDFInfo
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- CN110947339A CN110947339A CN201911251360.8A CN201911251360A CN110947339A CN 110947339 A CN110947339 A CN 110947339A CN 201911251360 A CN201911251360 A CN 201911251360A CN 110947339 A CN110947339 A CN 110947339A
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- granulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
Abstract
The invention provides ceramic raw material suspension granulation equipment, which comprises a feeding device and a granulation suspension tower, wherein the upper part of the granulation suspension tower is a cylinder, the lower part of the granulation suspension tower is a cone structure, air guide grooves are positioned at the junction of the cylinder and the cone of the granulation suspension tower and are uniformly distributed along the circumference of the cylinder, pressure air generated by an external high-pressure suspension fan generates upward suspension force through the air guide grooves, microparticles are continuously agglomerated and adsorbed under the action of the suspension force, the microparticles are gradually agglomerated and increased to form granular powder, and the granular powder meeting the process requirements flows out of a discharge hole when the weight of the particles is greater than the air flow suspension force. The granulation equipment is adopted to prepare the powder, so that the defects of high energy consumption and high cost of the powder prepared by a wet powder process can be overcome, and the technical problems of unreasonable particle distribution, poor flowability and overlarge particle volume weight of the powder prepared by the conventional dry process technology are solved.
Description
Technical Field
The invention relates to ceramic raw material suspension granulation equipment, and belongs to the field of raw material treatment equipment in the ceramic industry.
Background
When powder particles are prepared in the existing ceramic industry, one is a wet powder preparation process, namely, raw material formula materials are firstly put into a ball mill, 32-35% of water is added into the raw material formula materials, the mixture is finely ground into slurry, the prepared slurry is pumped into a spray dryer by a pump, the slurry is dried by hot air to 6-8% of water, and pressed particle powder is prepared, the particle size distribution of the powder is in the range of 18-100 meshes, the particle content in the range reaches 90%, and the volume weight is about 0.90g/cm3The prepared powder has regular particles, good fluidity and proper volume weight, is convenient for subsequent compression requirement, and has the following defects: because of the large amount of water to be evaporated, a large amount of heat is consumed, and the energy consumption is high.
A dry pulverizing process includes such steps as dry grinding to obtain powder with granularity less than 0.063 mm (250-mesh or finer), granulating by wheel mill, disk granulator, extruding granulator, or roller granulator. The pelletizing and granulating process includes adding water into the pelletizing and granulating machine, and utilizing the different principles and modes of rolling, extruding and strong stirringPelletizing, granulating and pulverizing. The water adding amount in the process is 10-12%, and then the powder is dried to 6-8% of water through other drying modes for production and use. The powder prepared by the dry method has unreasonable particle distribution, the percentage of particles distributed in the range of 18-100 meshes is about 50-60%, the high content of non-granulated fine powder influences the flowability of the powder, and in addition, the large particles of the prepared powder part are too hard by adopting strong stirring and extrusion, so that the volume weight of the powder is high (about 1.05-1.20 g/cm)3) The molding process parameters of the subsequent ceramic tiles are seriously influenced, and the final product quality is influenced.
Disclosure of Invention
The invention aims to provide ceramic raw material suspension granulation equipment, which aims to solve the defects of high energy consumption and high cost of powder prepared by a wet powder process and solve the technical problems of unreasonable particle distribution, poor flowability and overlarge particle volume weight of the powder prepared by the conventional dry process technology.
The core thought of the invention is as follows: a novel device is designed, and a suspension state airflow field generated by air can be utilized to form airflow stirring and suspension force in a device cavity, so that dry powder and humidifying liquid are agglomerated to form spherical granular powder.
Based on the design thought, the technical scheme adopted by the invention is as follows: the utility model provides a ceramic raw materials suspension granulation equipment, includes feeder and granulation suspension tower, wherein, feeder includes linear compensation hopper 1 and impeller feeder 2, the powder gets into powder deconcentrator 4 through the 2 feeds of impeller feeder, and the atomizing dispersion gets into granulation suspension tower 9 under the powder deconcentrator 4 effect, 9 upper portions of granulation suspension tower are the cylinder, and the lower part is the cone structure, is provided with wind-guiding groove 10 and high-pressure atomizer 5 in granulation suspension tower 9 inside, is provided with high-pressure suspension fan 6 and dust exhaust fan 7 in granulation suspension tower 9 outside, 9 cone lower parts of granulation suspension tower are from taking sealed discharge gate 8.
In order to apply pressure to the powder material and uniformly disperse the powder material to fully combine with atomized water in the tower, the further improvement is that the powder disperser 4 is circular and is uniformly provided with arc-shaped dispersing blades along the circumference.
The pressure wind generated by the external high-pressure suspension fan generates upward suspension force through the wind guide grooves, and the further improvement is that the wind guide grooves 10 in the granulation suspension tower 9 are positioned at the junction of the cylinder and the cone of the granulation suspension tower 9 and are uniformly distributed along the circumference of the cylinder.
In order to better atomize and disperse the powder into the granulation suspension tower under strong pressure, the further improvement is that a high-pressure fan 3 is arranged outside the powder disperser 4.
In order to form an air flow field and generate vortex stirring and agglomeration action on the powder and atomized water, the further improvement is that the powder disperser 4 generates downward dispersing force F1 on the powder entering the granulation suspension tower, and the high-pressure suspension fan 6 arranged outside the granulation suspension tower generates upward suspending force F2 on the powder entering the granulation suspension tower, wherein F2 is more than F1.
In order to facilitate the discharge of waste gas and dust, the further improvement is that the dust exhaust fan 7 is connected with a hook-shaped air suction opening at the side part of the tower body.
It should be noted that, when the equipment is in operation, the powder material is uniformly dispersed into the granulation suspension tower 9 through the powder disperser 4 by the airflow generated by the high pressure fan 3 from the externally provided ground and ground powder material, so as to form uniformly dispersed gas and solid phase. The humidifying liquid (water) is pumped into a high-pressure atomizing nozzle 5 in a granulation suspension tower 9 by an external high-pressure pump to generate atomized water and form a uniformly dispersed liquid phase. The surface tension of the atomized liquid (water core) has an adsorption effect, the dry fine powder also has a moisture absorption and adsorption effect, the solid-phase fine powder and the liquid-phase atomized water are strongly stirred in an air flow generated by a high-pressure fan and are contacted in a vortex process, and the dry fine powder and the water core are aggregated and adsorbed to form the microparticle coating material. The high-pressure suspension fan 6 outside the granulation suspension tower 9 provides ascending jet air flow into the granulation suspension tower 9 to generate vortex and suspension force, and micro-particles are continuously agglomerated and adsorbed under the action of the suspension force to gradually form balls and increase to form granular powder. When the weight of the particles is larger than the air suspension force, the particle powder meeting the process requirements flows out from the discharge port, and the air fluid in the granulation suspension tower 9 is discharged by the external dust exhaust fan 7.
The equipment provided by the invention has the advantages that the properties of the powder, such as granularity, the particle strength can be adjusted according to the process requirements, the particle size can be adjusted by adjusting different material quantity and water quantity, and the air pressure and the air quantity of the fan, the distribution of the airflow field in the granulation tower is changed, the suspension force of the airflow in the tower on the formed particle is further changed, and when the self weight of the particle is larger than that of the suspension, the particle powder can flow out from the discharge hole, so that the properties of the particle powder can reach the optimal state.
The key structure of the device is that the upper part of the granulation suspension tower is a cylinder, the lower part of the granulation suspension tower is a cone structure, and the air guide grooves are positioned at the junction of the cylinder and the cone of the granulation suspension tower and are uniformly distributed along the circumference of the cylinder, so that pressure air generated by an external high-pressure suspension fan generates upward suspension force F2 through the air guide grooves, the powder disperser is circular, arc dispersing blades are uniformly distributed along the circumference, downward dispersion force F1 is generated on powder entering the granulation suspension tower, and F2 is greater than F1. Thus, the micro-particles are ensured to be continuously agglomerated and adsorbed under the action of the suspension force, the micro-particles gradually form balls and increase to form granular powder, and when the weight of the particles is greater than the air flow suspension force, the granular powder meeting the process requirements flows out of the discharge hole.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a powder disperser;
the device comprises a linear compensation hopper 1, an impeller feeder 2, a high-pressure fan 3, a powder disperser 4, a high-pressure atomizer 5, a high-pressure suspension fan 6, a dust exhaust fan 7, a discharge port 8 with a seal, a granulation suspension tower 9 and an air guide groove 10.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
as shown in fig. 1, a ceramic raw material suspension granulation equipment, including feeder and granulation suspension tower, wherein, feeder includes linear compensation hopper 1 and impeller feeder 2, the powder gets into powder deconcentrator 4 through the feed of impeller feeder 2, and the atomizing dispersion gets into granulation suspension tower 9 under the powder deconcentrator 4 effect, granulation suspension tower 9 upper portion is the cylinder, and the lower part is the cone structure, is provided with wind-guiding groove 10 and high pressure atomizer 5 inside granulation suspension tower 9, is provided with high pressure suspension fan 6 and dust exhaust fan 7 outside granulation suspension tower 9, granulation suspension tower 9 cone lower part is from taking sealed discharge gate 8.
The powder disperser 4 is circular and is evenly provided with arc dispersing blades along the circumference.
The air guide grooves 10 in the granulation suspension tower 9 are positioned at the junction of the cylinder and the cone of the granulation suspension tower 9 and are uniformly distributed along the circumference of the cylinder.
And a high-pressure fan 3 is also arranged outside the powder disperser 4.
The dust exhaust fan 7 is connected with a hook-shaped air suction opening positioned on the side part of the tower body.
The concrete during operation: grinding fine powder materials supplied from the outside enter a linear compensation hopper 1, are fed quantitatively through an impeller feeder 2 and enter a powder disperser 4, high-pressure air from a high-pressure fan 3 simultaneously enters the powder disperser, the powder is atomized and dispersed in a granulation suspension tower 9 with a cylindrical upper part and a conical lower part under a strong pressure to form uniformly dispersed gas and solid dispersion phases, and humidifying liquid (water) is pumped into a high-pressure atomizing nozzle 5 in the humidifying tower by an external high-pressure pump to generate atomized water to form spherical uniformly dispersed liquid-phase fog drops. The surface tension of the atomized liquid (water core) has adsorption effect, and the dry fine powder also has moisture absorption and adsorption effects. The solid-phase fine powder and the liquid-phase atomized water drops are contacted in the strong stirring and vortex processes of the airflow generated by the high-pressure fan, and the dry fine powder and the water nuclei are agglomerated and adsorbed to form the microparticle coating material. A high-pressure suspension fan 6 arranged outside a granulation suspension tower 9 provides ascending jet air flow to an air guide groove 10 in the inner channel of the tower to generate vortex and suspension force, and microparticles are continuously agglomerated and adsorbed under the action of the suspension force to gradually form balls and increase to form granular powder. When the weight of the particles is larger than the air flow suspension force, the particle powder meeting the process requirements flows out from a discharge port 8 with a seal from the lower part of the cone, and fine powder and waste gas which do not form agglomerated particles in the tower body are discharged by an external dust exhaust fan 7 and enter a dust collection system.
Claims (3)
1. The ceramic raw material suspension granulation equipment comprises a feeding device and a granulation suspension tower, and is characterized in that the feeding device comprises a linear compensation hopper (1) and an impeller feeder (2), powder enters a powder disperser (4) through the feeding of the impeller feeder (2), is atomized and dispersed under the action of the powder disperser (4) to enter the granulation suspension tower (9), the upper part of the granulation suspension tower (9) is a cylinder, the lower part of the granulation suspension tower is of a cone structure, an air guide groove (10) and a high-pressure atomizing nozzle (5) are arranged inside the granulation suspension tower (9), a high-pressure suspension fan (6) and a dust exhaust fan (7) are arranged outside the granulation suspension tower (9), the lower part of the cone of the granulation suspension tower (9) is provided with a sealed discharge port (8), the powder disperser (4) is circular, and arc dispersing blades are uniformly distributed along the circumference, the air guide grooves (10) in the granulation suspension tower (9) are positioned at the junction of the cylinder and the cone of the granulation suspension tower (9) and are uniformly distributed along the circumference of the cylinder.
2. The ceramic raw material suspension granulation equipment as claimed in claim 1, wherein a high pressure fan (3) is further arranged outside the powder disperser (4).
3. A ceramic raw material suspension granulation apparatus according to claim 1, wherein said dust exhaust fan (7) is connected to a hook-shaped suction opening at the side of the tower for discharging exhaust gas and dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251360.8A CN110947339A (en) | 2019-12-09 | 2019-12-09 | Ceramic raw material suspension granulation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911251360.8A CN110947339A (en) | 2019-12-09 | 2019-12-09 | Ceramic raw material suspension granulation equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110947339A true CN110947339A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911251360.8A Withdrawn CN110947339A (en) | 2019-12-09 | 2019-12-09 | Ceramic raw material suspension granulation equipment |
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| CN (1) | CN110947339A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522074A (en) * | 2020-04-15 | 2021-10-22 | 中国石油化工股份有限公司 | Powder-liquid mixing equipment |
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2019
- 2019-12-09 CN CN201911251360.8A patent/CN110947339A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522074A (en) * | 2020-04-15 | 2021-10-22 | 中国石油化工股份有限公司 | Powder-liquid mixing equipment |
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Application publication date: 20200403 |