CN107726740A - A kind of method of micro-wave vacuum high titanium slag - Google Patents
A kind of method of micro-wave vacuum high titanium slag Download PDFInfo
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- CN107726740A CN107726740A CN201610648509.6A CN201610648509A CN107726740A CN 107726740 A CN107726740 A CN 107726740A CN 201610648509 A CN201610648509 A CN 201610648509A CN 107726740 A CN107726740 A CN 107726740A
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- high titanium
- titanium slag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/048—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum in combination with heat developed by electro-magnetic means, e.g. microwave energy
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- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Drying Of Solid Materials (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of micro-wave vacuum high titanium slag method, using the high titanium slag that water content is 1 2% as raw material, using intermittent type microwave vacuum dryer, the speed of microwave drying is controlled by adjusting the power output of microwave, ensures microwave resonance intracavitary without dirty non-oxidation in a manner of vacuumizing；Due to low pressure so that the boiling point of water reduces, water translocation and evaporation rate are accelerated in material, so reach identical degree of drying, it is shorter the time required to vacuum drying；And hydrofuge processing is carried out to drying box using water-ring vacuum pump, ensure that moisture is excluded in time；Inside is measured equipped with infrared radiation thermometer, humidity measuring apparatus to dryer inner epidemic disaster.It is 5.0 ~ 7.6KW to control microwave output power, and vacuum is 80 ~ 85kPa, under effectively control 45 DEG C ~ 65 DEG C drying temperatures of high titanium slag, realizes that the mass water content of high titanium slag is dried to 0.16% 0.24% from 1 2%.
Description
Technical field
The present invention relates to a kind of method of micro-wave vacuum high titanium slag, belong to microwave vacuum technical field of heating.
Background technology
In the technical process of chloridising production titanium dioxide, due to producing the primary raw material high titanium slag of titanium dioxide in storage rank
Section meeting adsorption moisture, these moisture once enter chloride process, will generate hydrogen chloride, severe corrosion equipment with chlorine reaction.
Therefore, it is necessary to by the moisture content of 1.0-3.0% or so in high titanium slag raw material, reduce and control and enter stove in chloridising production titanium dioxide
In the range of the 0.3-0.5% of raw aqueous rate requirement.Due to conventional drying methods by the moisture content in high titanium slag raw material from
1.0-3.0% is reduced and controlled in 0.3-0.5%, it is necessary to consume mass energy, and arid cycle is grown, drying cost abruptly increase, because
This explores a kind of low and environment-friendly drying means of energy resource consumption and is particularly important.
CN101545709 discloses a kind of method of microwave drying of high-titanium slag, and the invention is set using continuous microwave drying
It is standby that high titanium slag is dried, it is dried when drying using the mode of conveyer belt by microwave cavity, while use extractor fan
The temperature of microwave cavity is controlled.This processing is if there is the uneven drying for just easilying lead to high titanium slag of local heating
During partial oxidation, in addition this method drying time length, temperature is high, consumes mass energy, also exist dry it is deep
Spend the problem of shallower, dust pollution is larger.
The present invention uses micro-wave vacuum, is low temperature, a quick drying technology.It is micro- compared with other drying modes
Ripple vacuum drying high titanium slag has the characteristics of significantly high-quality, efficient, energy-saving and environmental protection：First, micro-wave vacuum high titanium slag is real
Existing the pollution-free of material, non-oxidation, drying；Low temperature drying can be realized simultaneously；It is raw furthermore rate of drying generally improves decades of times
Production efficiency greatly improves；Meanwhile energy consumption for drying generally reduces by more than 50%；Realize that safety clean produces.
The content of the invention
For the above-mentioned problems of the prior art and deficiency, the present invention provides a kind of side of micro-wave vacuum high titanium slag
Method, realize that material is pollution-free, non-oxidation is dried, can effectively realize that ultralow temperature is dried, dry depth and significantly improve, rate of drying
Also significantly lifted, reach the requirement of cleanliness without any pollution.The present invention is achieved through the following technical solutions.
A kind of method of micro-wave vacuum high titanium slag, it is characterised in that comprise the following steps that：
（1）By water content on the material slewing equipment that 1%-2% high titanium slag is put into vacuum cavity, vacuum cavity is closed
Door, makes vacuum cavity be in closed state；
（2）Cooling device is opened, makes vacuum drying containment portion cooling air-flow unobstructed；
（3）Inert gas generator is opened, inert gas is passed through into vacuum cavity by inert gas entrance, makes vacuum chamber
Interior air is discharged by inert gas outlet；
（4）Vacuum extractor is opened to being vacuumized in vacuum cavity；
（5）Temperature is set on the control panel；
（6）Microwave generating apparatus is opened, high titanium slag is dried；
（7）Dry after terminating, to vacuum cavity pressure release, vacuum cavity is zero by inert gas gateway pressure release to vacuum,
Vacuum extractor is opened, is extracted into set vacuum, opens relief valve, it is zero to admit air into vacuum cavity to vacuum,
Vacuum cavity door is opened, takes out dried high titanium slag.
The step（4）Middle vacuum is -75-90kPa.
Preferably, affiliated step（4）Middle vacuum is -80 ~ -85kPa.
The step（5）Equipped with infrared radiation thermometer, humidity measuring apparatus to dryer inner temperature, wet inside middle vacuum drying chamber
Degree is measured, and data are shown on the control panel.
The step（5）Middle temperature is arranged to 40 DEG C ~ 65 DEG C.
Preferably, the step（5）Middle temperature is arranged to 45 ~ 60 DEG C.
The step（6）Middle microwave microwave output power is 4.5 ~ 9.5KW.
Preferably, the step（6）Middle microwave output power is 5.0 ~ 7.6KW.
The step（7）The mass water content drying of middle high titanium slag is to 0.15%-0.28%.
Preferably, affiliated step（7）Middle high titanium slag mass water content drying is to 0.16% ~ 0.25%.
The beneficial effects of the invention are as follows：（1）Micro-wave vacuum high titanium slag realizes that the pollution-free of material, non-oxidation are dried；
（2）Low temperature drying can be achieved；（3）Rate of drying generally improves decades of times, and production efficiency greatly improves；（4）Energy consumption for drying is usual
Reduce by more than 50%；（5）Realize that safety clean produces.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of method of micro-wave vacuum high titanium slag, it is comprised the following steps that：
（1）By water content on the 1.2% material slewing equipment that is put into vacuum cavity of high titanium slag, vacuum cavity is closed
Door, makes vacuum cavity be in closed state；
（2）Cooling device is opened, makes vacuum drying containment portion cooling air-flow unobstructed；
（3）Inert gas generator is opened, inert gas is passed through into vacuum cavity by inert gas entrance, makes vacuum cavity
Interior air is discharged by inert gas outlet；
（4）Vacuum extractor is opened to being vacuumized in vacuum cavity, vacuum is -85kPa；
（5）Temperature 60 C is set on the control panel；
（6）Microwave generating apparatus is opened, regulating frequency is 9.5 KW, and high titanium slag is dried；
（7）Dry after terminating, to vacuum cavity pressure release, vacuum cavity is zero by inert gas gateway pressure release to vacuum,
Vacuum extractor is opened, is extracted into set vacuum, opens relief valve, it is zero to admit air into vacuum cavity to vacuum,
Vacuum cavity door is opened, takes out high titanium slag, the mass water content drying for reading dried high titanium slag on the control panel is
0.16%。
Embodiment 2
A kind of method of micro-wave vacuum high titanium slag, it is comprised the following steps that：
（1）By water content on the 1.4% material slewing equipment that is put into vacuum cavity of high titanium slag, vacuum cavity is closed
Door, makes vacuum cavity be in closed state；
（2）Cooling device is opened, makes vacuum drying containment portion cooling air-flow unobstructed；
（3）Inert gas generator is opened, inert gas is passed through into vacuum cavity by inert gas entrance, makes vacuum cavity
Interior air is discharged by inert gas outlet；
（4）Vacuum extractor is opened to being vacuumized in vacuum cavity, vacuum is -85kPa；
（5）55 DEG C of temperature is set on the control panel；
（6）Microwave generating apparatus is opened, regulating frequency is 7.5 KW, and high titanium slag is dried；
（7）Dry after terminating, to vacuum cavity pressure release, vacuum cavity is zero by inert gas gateway pressure release to vacuum,
Vacuum extractor is opened, is extracted into set vacuum, opens relief valve, it is zero to admit air into vacuum cavity to vacuum,
Vacuum cavity door is opened, takes out high titanium slag, the mass water content drying for reading dried high titanium slag on the control panel is
0.17%。
Embodiment 3
A kind of method of micro-wave vacuum high titanium slag, it is comprised the following steps that：
（1）By water content on the 1.3% material slewing equipment that is put into vacuum cavity of high titanium slag, vacuum cavity is closed
Door, makes vacuum cavity be in closed state；
（2）Cooling device is opened, makes vacuum drying containment portion cooling air-flow unobstructed；
（3）Inert gas generator is opened, inert gas is passed through into vacuum cavity by inert gas entrance, makes vacuum cavity
Interior air is discharged by inert gas outlet；
（4）Vacuum extractor is opened to being vacuumized in vacuum cavity, vacuum is -81kPa；
（5）62 DEG C of temperature is set on the control panel；
（6）Microwave generating apparatus is opened, regulating frequency 6.2KW, high titanium slag is dried；
（7）Dry after terminating, to vacuum cavity pressure release, vacuum cavity is zero by inert gas gateway pressure release to vacuum,
Vacuum extractor is opened, is extracted into set vacuum, opens relief valve, it is zero to admit air into vacuum cavity to vacuum,
Vacuum cavity door is opened, takes out high titanium slag, the mass water content drying for reading dried high titanium slag on the control panel is
0.19%。
Embodiment 4
A kind of method of micro-wave vacuum high titanium slag, it is comprised the following steps that：
（1）By water content on the 1.4% material slewing equipment that is put into vacuum cavity of high titanium slag, vacuum cavity is closed
Door, makes vacuum cavity be in closed state；
（2）Cooling device is opened, makes vacuum drying containment portion cooling air-flow unobstructed；
（3）Inert gas generator is opened, inert gas is passed through into vacuum cavity by inert gas entrance, makes vacuum cavity
Interior air is discharged by inert gas outlet；
（4）Vacuum extractor is opened to being vacuumized in vacuum cavity, vacuum is -83kPa；
（5）52 DEG C of temperature is set on the control panel；
（6）Microwave generating apparatus is opened, regulating frequency 7.6KW, high titanium slag is dried；
（7）Dry after terminating, to vacuum cavity pressure release, vacuum cavity is zero by inert gas gateway pressure release to vacuum,
Vacuum extractor is opened, is extracted into set vacuum, opens relief valve, it is zero to admit air into vacuum cavity to vacuum,
Vacuum cavity door is opened, takes out high titanium slag, the mass water content drying for reading dried high titanium slag on the control panel is
0.21%。
Claims (3)
- A kind of 1. method of micro-wave vacuum high titanium slag, it is characterised in that comprise the following steps that：（1）By water content on the material slewing equipment that 1%-2% high titanium slag is put into vacuum cavity, vacuum cavity is closed Door, makes vacuum cavity be in closed state；（2）Cooling device is opened, makes vacuum drying containment portion cooling air-flow unobstructed；（3）Inert gas generator is opened, inert gas is passed through into vacuum cavity by inert gas entrance, makes vacuum chamber Interior air is discharged by inert gas outlet；（4）Vacuum extractor is opened to being vacuumized in vacuum cavity；（5）Temperature is set on the control panel；（6）Microwave generating apparatus is opened, high titanium slag is dried；（7）Dry after terminating, to vacuum cavity pressure release, vacuum cavity is zero by inert gas gateway pressure release to vacuum, Vacuum extractor is opened, is extracted into set vacuum, opens relief valve, it is zero to admit air into vacuum cavity to vacuum, Vacuum cavity door is opened, takes out dried high titanium slag.
- 2. the method for micro-wave vacuum high titanium slag according to claim 1, it is characterised in that：It is 1 ~ 2 to dry moisture content Quality % high titanium slag, using 4.5 ~ 9.5KW of microwave output power, vacuum is -75 ~ 90kPa, controls high titanium in drying process The temperature of slag is 40 DEG C ~ 65 DEG C, realizes moisture and is down to average 0.15-0.28 mass %.
- 3. the method for micro-wave vacuum high titanium slag according to claim 1, it is characterised in that：It is 1 ~ 2 to dry moisture content Quality % high titanium slag, using 5.0 ~ 7.6KW of microwave output power, vacuum is -80 ~ -85kPa, controls high titanium in drying process The temperature of slag is 45 ~ 60 DEG C, realizes moisture and is down to average 0.16 ~ 0.24 mass %.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610648509.6A CN107726740A (en) | 2016-08-10 | 2016-08-10 | A kind of method of micro-wave vacuum high titanium slag |
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| CN201610648509.6A CN107726740A (en) | 2016-08-10 | 2016-08-10 | A kind of method of micro-wave vacuum high titanium slag |
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| CN107726740A true CN107726740A (en) | 2018-02-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127001A (en) * | 2020-09-29 | 2020-12-25 | 中科纺织研究院（青岛）有限公司 | Bodhi-containing polyamide fiber and preparation method thereof |
| CN112683008A (en) * | 2020-12-24 | 2021-04-20 | 天津包钢稀土研究院有限责任公司 | Method for preparing anhydrous rare earth halide by vacuum microwave dehydration |
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| KR20080022847A (en) * | 2006-09-08 | 2008-03-12 | 태경농산주식회사 | Apparatus for vacuum drying |
| CN101358803A (en) * | 2008-07-21 | 2009-02-04 | 天水华圆制药设备科技有限责任公司 | Explosion-proof box type vacuum microwave drier and operation method |
| CN101545709A (en) * | 2009-05-06 | 2009-09-30 | 昆明理工大学 | Method for microwave drying of high-titanium slag |
| CN103245170A (en) * | 2013-05-21 | 2013-08-14 | 锡矿山闪星锑业有限责任公司 | Ethylene glycol antimony acetate vacuum microwave drying method |
| CN104591122A (en) * | 2014-06-04 | 2015-05-06 | 常州第六元素材料科技股份有限公司 | Method for microwave drying of wet graphite oxide |
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2016
- 2016-08-10 CN CN201610648509.6A patent/CN107726740A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080022847A (en) * | 2006-09-08 | 2008-03-12 | 태경농산주식회사 | Apparatus for vacuum drying |
| CN101358803A (en) * | 2008-07-21 | 2009-02-04 | 天水华圆制药设备科技有限责任公司 | Explosion-proof box type vacuum microwave drier and operation method |
| CN101545709A (en) * | 2009-05-06 | 2009-09-30 | 昆明理工大学 | Method for microwave drying of high-titanium slag |
| CN103245170A (en) * | 2013-05-21 | 2013-08-14 | 锡矿山闪星锑业有限责任公司 | Ethylene glycol antimony acetate vacuum microwave drying method |
| CN104591122A (en) * | 2014-06-04 | 2015-05-06 | 常州第六元素材料科技股份有限公司 | Method for microwave drying of wet graphite oxide |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127001A (en) * | 2020-09-29 | 2020-12-25 | 中科纺织研究院（青岛）有限公司 | Bodhi-containing polyamide fiber and preparation method thereof |
| CN112683008A (en) * | 2020-12-24 | 2021-04-20 | 天津包钢稀土研究院有限责任公司 | Method for preparing anhydrous rare earth halide by vacuum microwave dehydration |
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Application publication date: 20180223 |