CN105737527B - A kind of pyrophillite drying means - Google Patents
A kind of pyrophillite drying means Download PDFInfo
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- CN105737527B CN105737527B CN201510987954.0A CN201510987954A CN105737527B CN 105737527 B CN105737527 B CN 105737527B CN 201510987954 A CN201510987954 A CN 201510987954A CN 105737527 B CN105737527 B CN 105737527B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
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Abstract
The invention discloses a kind of pyrophillite drying means, include the following steps：(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in the transmission belt of microwave dryer；(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave, meanwhile, the moisture in microwave dryer microwave cavity is discharged with dehumidifier；When moisture content to be dried to pyrophillite is 1%-1.5%, stop drying；(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.The drying means homogeneous heating, heating are stablized, and are solved the problems, such as pyrophillite surface of material blistering in drying process, are burst, the pyrophillite quality obtained after dry is good；Moreover, drying means of the present invention uses clean energy resource, it is environmentally safe.
Description
Technical field
The invention belongs to technical field of microwave drying, and in particular to a kind of pyrophillite drying means.
Background technology
Pyrophillite is one kind of clay mineral, and it is 2 to belong to crystalline texture：The layered hydrous aluminium silicate mineral of 1 type draws, and changes
Structural formula is Al2[Si4O10](OH)2.Pyrophillite quality is fine and smooth, and hardness is low (1-2), is suitble to do artificially synthesizing diamond
Blank (mold), ceramics, refractory material, glass fibre, carving stone etc. can be widely applied to ceramics, metallurgy, building materials, chemical industry, light
The industrial departments such as work.Pyrophillite conventional drying methods have：Hot wind, electric heating and steam etc. are to utilize heat transfer, thermal convection current, heat
Heat, is first passed to heating object surface, then gradually central temperature is made to increase by heat transfer by the methods of radiation, therefore,
These drying means are required for certain heat conduction time, and drying time is long, and efficiency is low.Microwave heating belongs to internal heating side
Formula, while microwave also has selectivity and penetrability, and electromagnetic energy can be made directly to act on and converted with medium molecule (such as hydrone)
At heat, and can penetrate medium keeps it inside and outside while heated, does not need heat transfer, therefore can make material bulk temperature in a short time
Increase, the utilization rate of energy obtains raising largely, therefore, the present invention have studied emphatically it is a kind of with microwave method to leaf
The method that cured stone is dried.
Invention content
The object of the present invention is to provide a kind of pyrophillite drying means, and the drying means is convenient for control, and drying time is short, energy
Consume low, and dry environment is totally pollution-free, overcomes that drying time present in pyrophillite conventional drying process is long, energy consumption
The shortcomings of high, temperature is difficult to control.
The technical solution adopted by the present invention is：
A kind of pyrophillite drying means, includes the following steps：
(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in microwave drying
In the transmission belt of equipment；
(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave,
Meanwhile the moisture in microwave dryer microwave cavity being discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1%-
When 1.5%, stop drying；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is by pyrophillite heat temperature raising
To 120 DEG C -130 DEG C, heating-up time 50-60min；Second stage is the heating period, is that will pass through at initial stage warm-up phase
Pyrophillite after reason is heated to 190 DEG C -200 DEG C, heating-up time 50-60min；Three phases are hot setting rank
Section is will to pass through that treated the heating period pyrophillite is heated to 260 DEG C -280 DEG C, heating-up time 10-15min；
(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.
According to above-mentioned pyrophillite drying means, in step (1), the thickness of pyrophillite is 2-5cm in transmission belt.
According to above-mentioned pyrophillite drying means, in step (2), the heating rate of the initial stage warm-up phase is 2.0-
2.6 DEG C/min, microwave power 1-3kW.
According to above-mentioned pyrophillite drying means, in step (2), the heating rate of the heating period is 3.2-4.0 DEG C/
Min, microwave power 2-5kW.
According to above-mentioned pyrophillite drying means, in step (2), the heating rate in the hot setting stage is 20-28
DEG C/min, microwave power 4-10kW.
According to above-mentioned pyrophillite drying means, the exhausting amount of dehumidifier described in step (2) is 3500-4000m3/h。
According to above-mentioned pyrophillite drying means, dehumidifier described in step (2) is centrifugal blower.
The active and effective effect that the present invention obtains is：
(1) present invention is dried pyrophillite using microwave, and under the action of microwave, hydrone is sent out in pyrophillite material
Raw orientation high-frequency vibration, phase mutual friction make entire pyrophillite material form heater, moreover, microwave is directed through material selectivity
Ground acts on hydrone, is not necessarily to heat transfer, and therefore, drying means uniform drying of the present invention, arid cycle is short, process is simple, imitates
Rate is high, and low energy consumption, greatly uses manpower and material resources sparingly, and reduces the drying cost of pyrophillite.
(2) the method for the present invention carries out pyrophillite interim slow heating drying process using microwave, and homogeneous heating rises
Temperature is stablized, and solves the problems, such as pyrophillite surface of material blistering in drying process, bursts, the pyrophillite product obtained after dry
Matter is good；Moreover, drying means of the present invention uses clean energy resource, it is environmentally safe.
(3) method of drying means of the present invention, electric dry oven furnace drying method and vacuum resistance furnace drying is respectively adopted to identical
Equivalent pyrophillite be dried, comparing result is shown in Table 1；By table 1 it is also seen that the drying means drying time of the present invention
Short, efficient, low energy consumption.
The comparison of the different pyrophillite drying means of table 1
Specific implementation mode
With reference to embodiment, the invention will be further described, but does not limit the scope of the invention.
Embodiment 1：
A kind of pyrophillite drying means, includes the following steps：
(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in microwave drying
In the transmission belt of equipment, the thickness of pyrophillite is 2cm in transmission belt；
(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave,
Meanwhile the moisture in microwave dryer microwave cavity being discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1%
When, stop drying；The exhausting amount of the dehumidifier is 3500m3/ h, the dehumidifier are centrifugal blower；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is by pyrophillite with 2.0-2.6
DEG C/heating rate of min is heated to 120 DEG C, heating-up time 60min；Second stage is the heating period, is that will pass through
Treated that pyrophillite is heated to 190 DEG C with the heating rate of 3.2-4.0 DEG C/min for initial stage warm-up phase, the heating-up time
60min；Three phases are the hot setting stage, and the pyrophillite that will pass through that treated the heating period is with 20-28 DEG C/min
Heating rate is heated to 260 DEG C, heating-up time 15min；The microwave power of first stage is 1kW, second stage
Microwave power be 3kW, the microwave powers of three phases is 4kW；
(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.
Embodiment 2：
A kind of pyrophillite drying means, includes the following steps：
(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in microwave drying
In the transmission belt of equipment, the thickness of pyrophillite is 3cm in transmission belt；
(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave,
Meanwhile the moisture in microwave dryer microwave cavity being discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1.5%
When, stop drying；The exhausting amount of the dehumidifier is 4000m3/ h, the dehumidifier are centrifugal blower；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is by pyrophillite with 2.0-2.6
DEG C/heating rate of min is heated to 130 DEG C, heating-up time 50min；Second stage is the heating period, is that will pass through
Treated that pyrophillite is heated to 200 DEG C with the heating rate of 3.2-4.0 DEG C/min for initial stage warm-up phase, and the heating-up time is
50min；Three phases are the hot setting stage, and the pyrophillite that will pass through that treated the heating period is with 20-28 DEG C/min
Heating rate is heated to 280 DEG C, heating-up time 10min；The microwave power of first stage is 2kW, second stage
Microwave power be 2kW, the microwave powers of three phases is 5kW；
(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.
Embodiment 3：
A kind of pyrophillite drying means, includes the following steps：
(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in microwave drying
In the transmission belt of equipment, the thickness of pyrophillite is 5cm in transmission belt；
(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave,
Meanwhile the moisture in microwave dryer microwave cavity being discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1.2%
When, stop drying；The exhausting amount of the dehumidifier is 3600m3/ h, the dehumidifier are centrifugal blower；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is by pyrophillite with 2.0-2.6
DEG C/heating rate of min is heated to 125 DEG C, heating-up time 55min；Second stage is the heating period, is that will pass through
Treated that pyrophillite is heated to 195 DEG C with the heating rate of 3.2-4.0 DEG C/min for initial stage warm-up phase, and the heating-up time is
55min；Three phases are the hot setting stage, and the pyrophillite that will pass through that treated the heating period is with 20-28 DEG C/min
Heating rate is heated to 270 DEG C, heating-up time 12min；The microwave power of first stage is 3kW, second stage
Microwave power be 5kW, the microwave powers of three phases is 10kW；
(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.
Embodiment 4：
A kind of pyrophillite drying means, includes the following steps：
(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in microwave drying
In the transmission belt of equipment, the thickness of pyrophillite is 4cm in transmission belt；
(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave,
Meanwhile the moisture in microwave dryer microwave cavity being discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1.4%
When, stop drying；The exhausting amount of the dehumidifier is 3500m3/ h, the dehumidifier are centrifugal blower；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is by pyrophillite with 2.0-2.6
DEG C/heating rate of min is heated to 125 DEG C, heating-up time 60min；Second stage is the heating period, is that will pass through
Treated that pyrophillite is heated to 200 DEG C with the heating rate of 3.2-4.0 DEG C/min for initial stage warm-up phase, and the heating-up time is
50min；Three phases are the hot setting stage, and the pyrophillite that will pass through that treated the heating period is with 20-28 DEG C/min
Heating rate is heated to 260 DEG C, heating-up time 10min；The microwave power of first stage is 1kW, second stage
Microwave power be 4kW, the microwave powers of three phases is 6kW；
(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.
Embodiment 5：
A kind of pyrophillite drying means, includes the following steps：
(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in microwave drying
In the transmission belt of equipment, the thickness of pyrophillite is 3cm in transmission belt；
(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave,
Meanwhile the moisture in microwave dryer microwave cavity being discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1.4%
When, stop drying；The exhausting amount of the dehumidifier is 3800m3/ h, the dehumidifier are centrifugal blower；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is by pyrophillite with 2.0-2.6
DEG C/heating rate of min is heated to 120 DEG C, heating-up time 55min；Second stage is the heating period, is that will pass through
Treated that pyrophillite is heated to 190 DEG C with the heating rate of 3.2-4.0 DEG C/min for initial stage warm-up phase, and the heating-up time is
55min；Three phases are the hot setting stage, and the pyrophillite that will pass through that treated the heating period is with 20-28 DEG C/min
Heating rate is heated to 270 DEG C, heating-up time 15min；The microwave power of first stage is 2kW, second stage
Microwave power be 5kW, the microwave powers of three phases is 8kW；
(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.
Embodiment 6：
A kind of pyrophillite drying means, includes the following steps：
(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in microwave drying
In the transmission belt of equipment, the thickness of pyrophillite is 2cm in transmission belt；
(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave,
Meanwhile the moisture in microwave dryer microwave cavity being discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1.0%
When, stop drying；The exhausting amount of the dehumidifier is 3500m3/ h, the dehumidifier are centrifugal blower；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is by pyrophillite with 2.0-2.6
DEG C/heating rate of min is heated to 130 DEG C, heating-up time 50min；Second stage is the heating period, is that will pass through
Treated that pyrophillite is heated to 195 DEG C with the heating rate of 3.2-4.0 DEG C/min for initial stage warm-up phase, and the heating-up time is
50min；Three phases are the hot setting stage, and the pyrophillite that will pass through that treated the heating period is with 20-28 DEG C/min
Heating rate is heated to 260 DEG C, heating-up time 12min；The microwave power of first stage is 3kW, second stage
Microwave power be 3kW, the microwave powers of three phases is 4kW；
(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.
Embodiment 7：
A kind of pyrophillite drying means, includes the following steps：
(1) it is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in microwave drying
In the transmission belt of equipment, the thickness of pyrophillite is 4cm in transmission belt；
(2) pyrophyllite block is sent in the microwave cavity of microwave dryer, continuous drying processing is carried out using microwave,
Meanwhile the moisture in microwave dryer microwave cavity being discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1.0%
When, stop drying；The exhausting amount of the dehumidifier is 3600m3/ h, the dehumidifier are centrifugal blower；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is by pyrophillite with 2.0-2.6
DEG C/heating rate of min is heated to 120 DEG C, heating-up time 50min；Second stage is the heating period, is that will pass through
Treated that pyrophillite is heated to 200 DEG C with the heating rate of 3.2-4.0 DEG C/min for initial stage warm-up phase, and the heating-up time is
60min；Three phases are the hot setting stage, and the pyrophillite that will pass through that treated the heating period is with 20-28 DEG C/min
Heating rate is heated to 280 DEG C, heating-up time 14min；The microwave power of first stage is 1kW, second stage
Microwave power be 3kW, the microwave powers of three phases is 6kW；
(3) step (2) will be passed through treated, and pyrophillite discharges, natural cooling is to get to the pyrophillite after drying.
Claims (4)
1. a kind of pyrophillite drying means, which is characterized in that include the following steps：
（1）It is 80-90cm by volume3Initial aqueous rate is that the pyrophyllite block of 4%-5% is equably laid in the biography of microwave dryer
It is defeated to take；
（2）Pyrophyllite block is sent in the microwave cavity of microwave dryer, carries out continuous drying processing using microwave, together
When, the moisture in microwave dryer microwave cavity is discharged with dehumidifier；Moisture content to be dried to pyrophillite is 1%-1.5%
When, stop drying；
The continuous drying is divided into three phases：First stage is initial stage warm-up phase, is that pyrophillite is heated to 120
DEG C -130 DEG C, heating-up time 50-60min；Second stage is the heating period, be will pass through initial stage warm-up phase treated
Pyrophillite is heated to 190 DEG C -200 DEG C, heating-up time 50-60min；Three phases be the hot setting stage, be by
By treated the heating period, pyrophillite is heated to 260 DEG C -280 DEG C, heating-up time 10-15min；The initial stage is pre-
The heating rate in hot stage is 2.0-2.6 DEG C/min, microwave power 1-3kW；The heating rate of the heating period is 3.2-
4.0 DEG C/min, microwave power 2-5kW；The heating rate in the hot setting stage is 20-28 DEG C/min, and microwave power is
4-10kW；
（3）Step will be passed through（2）Treated, and pyrophillite discharges, and natural cooling is to get to the pyrophillite after drying.
2. pyrophillite drying means according to claim 1, which is characterized in that step（1）In, pyrophillite in transmission belt
Thickness is 2-5cm.
3. pyrophillite drying means according to claim 1, which is characterized in that step（2）Described in dehumidifier exhausting
Amount is 3500-4000m3/h。
4. pyrophillite drying means according to claim 1, which is characterized in that step（2）Described in dehumidifier be centrifugation
Wind turbine.
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| CN105737527B true CN105737527B (en) | 2018-11-09 |
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| CN116003095B (en) * | 2022-12-30 | 2024-08-02 | 河南黄河旋风股份有限公司 | High-stability pyrophyllite roasting method for large-cavity synthetic diamond |
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| CN102615030A (en) * | 2012-04-01 | 2012-08-01 | 昆明理工大学 | Microwave/hot air collaborative drying method of paste-like coating |
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| CN203100378U (en) * | 2012-12-20 | 2013-07-31 | 河南勃达微波设备有限责任公司 | Microwave high-temperature pyrophyllite drying equipment |
| CN103743203A (en) * | 2014-01-17 | 2014-04-23 | 河南勃达微波设备有限责任公司 | Vanadium pentoxide catalyst microwave-drying process |
| CN104864691A (en) * | 2015-04-24 | 2015-08-26 | 昆明理工大学 | Method of drying welding electrode through microwave |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19804386C2 (en) * | 1998-02-04 | 1999-12-30 | Ttp Ingenieurbuero | Method and device for drying or heat treating products, in particular with the aid of microwave radiation, and banana chips and banana powder produced therewith |
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2015
- 2015-12-25 CN CN201510987954.0A patent/CN105737527B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162519A (en) * | 2011-12-16 | 2013-06-19 | 河南勃达微波设备有限责任公司 | Drying equipment and drying method |
| CN102615030A (en) * | 2012-04-01 | 2012-08-01 | 昆明理工大学 | Microwave/hot air collaborative drying method of paste-like coating |
| CN202878474U (en) * | 2012-09-21 | 2013-04-17 | 东莞市德迈特隔热材料有限公司 | Full-automatic production equipment of expanded perlite fireproof door core plate |
| CN203100378U (en) * | 2012-12-20 | 2013-07-31 | 河南勃达微波设备有限责任公司 | Microwave high-temperature pyrophyllite drying equipment |
| CN103743203A (en) * | 2014-01-17 | 2014-04-23 | 河南勃达微波设备有限责任公司 | Vanadium pentoxide catalyst microwave-drying process |
| CN104864691A (en) * | 2015-04-24 | 2015-08-26 | 昆明理工大学 | Method of drying welding electrode through microwave |
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