CN101545709A - Method for microwave drying of high-titanium slag - Google Patents
Method for microwave drying of high-titanium slag Download PDFInfo
- Publication number
- CN101545709A CN101545709A CN200910094437A CN200910094437A CN101545709A CN 101545709 A CN101545709 A CN 101545709A CN 200910094437 A CN200910094437 A CN 200910094437A CN 200910094437 A CN200910094437 A CN 200910094437A CN 101545709 A CN101545709 A CN 101545709A
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- Prior art keywords
- microwave
- titanium slag
- high titanium
- moisture
- quality
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010936 titanium Substances 0.000 title claims abstract description 48
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 48
- 239000002893 slag Substances 0.000 title claims abstract description 47
- 238000001035 drying Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 44
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001179 sorption measurement Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 abstract 3
- 238000005660 chlorination reaction Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000010215 titanium dioxide Nutrition 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a method for microwave drying of high-titanium slag, which comprises the following steps: taking the high-titanium slag of which the water content is between 1 and 2 percent as a raw material; adopting a continuous microwave drying device; according to relatively fixed microwave power, changing the ventilation volumes of different microwave cavities and further adjusting parameters of the transporting rate of materials in the microwave cavities, the thickness of the material and the like; and mounting a stirrer and cavity clapboards in the microwave drying device. The ventilation volumes of ventilation devices in the microwave cavities are controlled to be between 1,247 and 2,250 m<3>/h, the speed rate of a conveying belt is between 0.5 and 2 meters per minute, the thickness of material layers is controlled to be between 1 and 5 centimeters, an air exhaust deduster is arranged at the top end of a discharge device, and the stirrer and the cavity clapboards are arranged on the microwave drying device, thus the method achieves the effect that the mass water content of the high-titanium slag is dried to be 0.3 percent from 1 to 2 percent by effectively controlling the drying temperature of the high-titanium slag to be between 70 and 76 DEG C.
Description
One, technical field
The present invention relates to a kind of method of microwave drying high titanium slag, belong to the heating using microwave applied technical field.
Two, background technology
In titanium industry, external advanced corporate boss will be raw material with the high titanium slag, adopt the fluidizing chlorination method to produce titanium tetrachloride, to prepare follow-up titanium white and titanium sponge, especially for the titanium white industry, the fluidizing chlorination method has that flow process is short, production capacity easily enlarges, continuous and automatic degree height, energy consumption are low relatively, " three wastes " less and characteristics such as product factor of merit height.Fluidizing chlorination be with the high titanium slag powder with carry out high-temp chlorination after petroleum coke mixes and produce titanium tetrachloride.In producing the titanium tetrachloride process, owing to technology such as need store up, the moisture of high titanium slag can increase, and the highest moisture fluctuates at 1-2%, and practice for many years shows, in case the moisture of high titanium slag surpasses 0.3%, enter chloride process, moisture will generate hydrogen chloride with chlorine reaction, severe corrosion equipment, therefore must carry out drying to going into the stove high titanium slag, strict control moisture is below 0.3%.
In the known drying process, no matter be to adopt electrical heating, Steam Heating, or the fuel heating, the transmission of heat all is carrying out from outward appearance to inner essence, needs just can remove moisture through the long period, has reduced drying efficiency; When high titanium slag reaches higher temperature (more than 120 ℃), just can be dried to material inside simultaneously, this has increased drying cost undoubtedly.
Because microwave has preferential selectivity heat characteristic to glassware for drinking water, especially for the drying of metallurgical material, the plan that its efficient drying object mainly is a minute quantity removes moisture, greatly reduces energy consumption, and has effectively avoided the discharging of greenhouse gases and pollutant.
Three, summary of the invention
The object of the present invention is to provide a kind of method of microwave drying high titanium slag, is raw material with water content at the high titanium slag of 1-2%, adopt continuous microwave dryer, by the relative fixed microwave power, the exhausting amount of the different microwave cavities of conversion is further regulated parameters such as the transfer rate of material in microwave cavity, material thickness, and stirrer and cavity dividing plate are set, effectively controlling the high titanium slag baking temperature is 70-76 ℃, realizes that the mass water content of high titanium slag is dried to 0.3% from 1-2%.
The present invention realizes in the following manner
(1), moisture content is placed the feed arrangement of microwave dryer at the high titanium slag of 1-2%, feed arrangement control feeding coal, high titanium slag is added on the driving belt, bed of material baffle plate is set on the driving-belt, distance between controllable register and the belt realizes the control of thickness of feed layer, makes material be transported in the microwave cavity continuously under the situation that keeps consistency of thickness, described thickness of feed layer is controlled to be 1-5cm, and driving-belt speed is 0.5-2m/min;
(2), dispose moisture teller on the feed arrangement, detect the variation of moisture in the high titanium slag automatically, and moisture value is reflected on the control panel;
(3), microwave dryer is composed in series by 3-15 heating using microwave cavity, wherein arrange magnetron in the heating using microwave cavity, between each cavity dividing plate is set, simultaneously by controlling the speed of transport tape, and then regulate the time of staying of material in microwave cavity, the temperature of high titanium slag is at 70-76 ℃ in the control dry run;
(4), extractor fan is installed at the top, interval of each microwave cavity, can guarantee that the steam that the high titanium slag of different moisture content produces in time discharges from microwave cavity in dry run, prevented in the microwave cavity " dewfall ", prevent that promptly cavity inner wall from having the globule to separate out, in case dewfall, the part microwave will heat the globule, cause energy loss; The exhausting amount of described extractor fan reaches and is 1247-2250m
3/ h,
(5), on conveyer belt, microwave cavity dividing plate place settles stirrer, and material is carried out stirring, accelerates removing of moisture, avoids high titanium slag second adsorption moisture;
(6), the magnetron of microwave cavity is adopted copper ring-type cooler, water flowing is cooled off, and improves the service life of magnetron, and what is more important has been avoided the generation of microwave output power relaxation phenomenon.
Technological principle of the present invention is and adopts microwave drying, does not need heat conduction from outward appearance to inner essence, but directly carries out drying by microwave in the energy dissipation of material internal moisture, can remove moisture timely and effectively; The electric medium constant of water is very high, and room temperature condition is issued to 78, belongs to strong suction ripple material, utilizes the microwave selective heating, need not whole material is heated, and only the moisture in the material is heated, thereby realizes dry saving energy and reduce the cost; Utilize the volume-heated characteristics of microwave, microwave directly penetrates material inside, and the moisture of material inside and outside portion is heated simultaneously, has effectively improved the dynamic conditions of moisture removal, has improved the thermal efficiency; By under the condition of specified microwave power, exhausting amount, control conveyer belt speed can be carried out drying at a lower temperature simultaneously; By setting up microwave cavity dividing plate and stirrer, effectively avoided the second adsorption moisture of high titanium slag, further improved rate of drying.
The present invention has following advantage:
(1) under the condition of fixedly microwave power, exhausting amount, regulate transport tape speed, when high titanium slag temperature during, can effectively reduce temperature below the moisture drying to 0.3% with moisture 1-2% at 70-76 ℃, realized energy-saving and cost-reducing;
(2) by at feed arrangement configuration moisture teller, can regulate transport tape speed automatically to the high titanium slag of different moisture content, compare with the manual adjustments and the fixing control of existing microwave drying instrument, energy-saving effect is remarkable;
(3) with magnetron by the air-cooled water-cooled of being replaced by, improved service life, guarantee the stability of microwave input power, avoided the decay of microwave power;
(4) in microwave cavity, set up dividing plate, on the conveyer belt at dividing plate place, set up stirrer, effectively avoided high titanium slag second adsorption moisture, further improved rate of drying.
Four, specifically implement real mode
Embodiment 1: dry moisture content is the high titanium slag of 1.3 quality %, and the microwave output power of employing is 18kW, 6 of magnetrons, and each magnetron power is 1.5kW, and the control thickness of feed layer is 1.5cm, and the exhausting amount is 2000m
3/ h, line speed is 1m/min, the baking temperature of high titanium slag is 73 ℃ in the microwave cavity at this moment, by the input and output material of continuous 2h, the moisture of discharging opening high titanium slag all is lower than 0.3%, average out to 0.28%, by calculating, microwave drying high titanium slag, its dehydrating amount are 0.40kg/kWh, the power consumption 26kWh that promptly dry material per ton needs.
Embodiment 2: dry moisture content is the high titanium slag of 1.0 quality %, and the microwave output power of employing is 12kW, and magnetron power is 1.5kW, and dividing plate is 10cm apart from the height of belt, and the control thickness of feed layer is 2cm, and the exhausting amount is 1500m
3/ h, line speed is 1.5m/min, the baking temperature of high titanium slag is 71 ℃ in the microwave cavity, by the input and output material of continuous 4h, the moisture of discharging opening high titanium slag all is lower than 0.3%, average out to 0.24%, by calculating, microwave drying high titanium slag, its dehydrating amount are 0.37kg/kWh, the power consumption 21kWh that promptly dry material per ton needs.
Claims (3)
1, a kind of method of microwave drying high titanium slag, it is characterized in that: it is finished according to the following steps,
(1), moisture content is placed the feed arrangement of microwave dryer at the high titanium slag of 1-2 quality %, feed arrangement control feeding coal, high titanium slag is added on the driving-belt, bed of material baffle plate is set on the driving-belt, distance between controllable register and the belt realizes the control of thickness of feed layer, makes material be transported in the microwave cavity continuously under the situation that keeps consistency of thickness, described thickness of feed layer is controlled to be 1-5cm, and driving-belt speed is 0.5-2m/min;
(2), dispose moisture teller on the feed arrangement, detect the variation of moisture in the high titanium slag automatically, and moisture value is reflected on the control panel;
(3), microwave dryer is composed in series by 3-15 heating using microwave cavity, wherein arrange magnetron in the heating using microwave cavity, between each cavity dividing plate is set, simultaneously by controlling the speed of transport tape, and then regulate the time of staying of material in microwave cavity, the temperature of high titanium slag is at 70-76 ℃ in the control dry run;
(4), the top, interval of each microwave cavity installs extractor fan, guarantees that the steam that the high titanium slag of different moisture content produces in dry run in time discharges from microwave cavity, the exhausting amount of described extractor fan is 1247-2250m
3/ h;
(5), on conveyer belt, microwave cavity dividing plate place settles stirrer, and material is carried out stirring, accelerates removing of moisture, avoids high titanium slag second adsorption moisture;
(6), the magnetron of microwave cavity is adopted copper ring-type cooler, water flowing is cooled off.
2, the method for microwave drying high titanium slag according to claim 1 is characterized in that: dry moisture content is the high titanium slag of 1.3 quality %, and the microwave output power of employing is 18kW, 6 of magnetrons, each magnetron power is 1.5kW, and the control thickness of feed layer is 1.5cm, and the exhausting amount is 2000m
3/ h, line speed is 1m/min, and baking temperature is 73 ℃, and realization moisture is reduced to average 0.28 quality % from 1.3 quality %.
3, the method for microwave drying high titanium slag according to claim 1, it is characterized in that: dry moisture content is the high titanium slag of 1.0 quality %, the microwave output power that adopts is 12kW, magnetron power is 1.5kW, dividing plate is 10cm apart from the height of belt, the control thickness of feed layer is 2cm, and the exhausting amount is 1500m
3/ h, line speed is 1.5m/min, and the baking temperature of high titanium slag is 71 ℃ in the microwave cavity, and realization moisture is reduced to average 0.24 quality % from 1 quality %.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910094437.5A CN101545709B (en) | 2009-05-06 | 2009-05-06 | Method for microwave drying of high-titanium slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910094437.5A CN101545709B (en) | 2009-05-06 | 2009-05-06 | Method for microwave drying of high-titanium slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101545709A true CN101545709A (en) | 2009-09-30 |
| CN101545709B CN101545709B (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910094437.5A Expired - Fee Related CN101545709B (en) | 2009-05-06 | 2009-05-06 | Method for microwave drying of high-titanium slag |
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| Country | Link |
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| CN (1) | CN101545709B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762142B (en) * | 2010-01-29 | 2011-05-25 | 新星化工冶金材料(深圳)有限公司 | Baking furnace |
| CN102494522A (en) * | 2011-12-19 | 2012-06-13 | 锡矿山闪星锑业有限责任公司 | Environment-friendly drying method of sodium arsenate mixed salt by microwaves |
| CN103234339A (en) * | 2013-05-02 | 2013-08-07 | 昆明理工大学 | Device for ilmenite concentrate microwave drying and application method thereof |
| CN107399760A (en) * | 2016-05-20 | 2017-11-28 | 云南民族大学 | A kind of method that microwave sodium roasting high titanium slag prepares synthetic rutile |
| CN107726740A (en) * | 2016-08-10 | 2018-02-23 | 云南民族大学 | A kind of method of micro-wave vacuum high titanium slag |
| CN107796176A (en) * | 2016-09-01 | 2018-03-13 | 云南民族大学 | A kind of method of microwave fluidized drying acid-dissolved titanium slag |
| CN111717933A (en) * | 2020-06-29 | 2020-09-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Reduce rutile type TiO in titanium slag2Titanium slag rapid cooling system and method |
-
2009
- 2009-05-06 CN CN200910094437.5A patent/CN101545709B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762142B (en) * | 2010-01-29 | 2011-05-25 | 新星化工冶金材料(深圳)有限公司 | Baking furnace |
| CN102494522A (en) * | 2011-12-19 | 2012-06-13 | 锡矿山闪星锑业有限责任公司 | Environment-friendly drying method of sodium arsenate mixed salt by microwaves |
| CN103234339A (en) * | 2013-05-02 | 2013-08-07 | 昆明理工大学 | Device for ilmenite concentrate microwave drying and application method thereof |
| CN103234339B (en) * | 2013-05-02 | 2015-06-03 | 昆明理工大学 | Device for ilmenite concentrate microwave drying and application method thereof |
| CN107399760A (en) * | 2016-05-20 | 2017-11-28 | 云南民族大学 | A kind of method that microwave sodium roasting high titanium slag prepares synthetic rutile |
| CN107726740A (en) * | 2016-08-10 | 2018-02-23 | 云南民族大学 | A kind of method of micro-wave vacuum high titanium slag |
| CN107796176A (en) * | 2016-09-01 | 2018-03-13 | 云南民族大学 | A kind of method of microwave fluidized drying acid-dissolved titanium slag |
| CN111717933A (en) * | 2020-06-29 | 2020-09-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Reduce rutile type TiO in titanium slag2Titanium slag rapid cooling system and method |
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| Publication number | Publication date |
|---|---|
| CN101545709B (en) | 2011-01-05 |
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Granted publication date: 20110105 Termination date: 20120506 |