CN104195597A - Feeding control method for aluminum oxide - Google Patents
Feeding control method for aluminum oxide Download PDFInfo
- Publication number
- CN104195597A CN104195597A CN201410469025.6A CN201410469025A CN104195597A CN 104195597 A CN104195597 A CN 104195597A CN 201410469025 A CN201410469025 A CN 201410469025A CN 104195597 A CN104195597 A CN 104195597A
- Authority
- CN
- China
- Prior art keywords
- aluminum oxide
- value
- blower
- air outlet
- relational expression
- Prior art date
- 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.)
- Granted
Links
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 29
- 235000021050 feed intake Nutrition 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 7
- 229910052731 fluorine Inorganic materials 0.000 description 7
- 239000011737 fluorine Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 3
- 230000000391 smoking effect Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
Landscapes
- Control Of Positive-Displacement Air Blowers (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
The invention provides a feeding control method for aluminum oxide. The feeding control method comprises the following steps: step one, providing a roots blower, starting the roots blower before the aluminum oxide is fed, counting the pressure valve of the air outlet of the roots blower in one hour, calculating an average value P1, and calculating the value of A1 according to the relational expression that P1=A1+B2Q12; step two, counting the average feeding amount Q2 of the aluminum oxide, when the difference value of Q2 and the average feeding mount Q of actually required aluminum oxide is smaller than 3% of Q, measuring the pressure value P2 of the air outlet of the roots blower, and calculating the value of B1 according to the relational expression that P2=A1+B1Q22; step three, measuring the pressure value P2 of the air outlet of the roots blower in real time, calculating the value of Q3 according to the relational expression that P3=A1+B1Q32, and setting the pressure value of the air outlet of the roots blower to be P3. Compared with the prior art, the feeding control method has the beneficial effects that the feeding for the aluminum oxide is accurately metered; other equipment does not need to be added, impact plate flow meters are omitted, and the cost is reduced; the feeding control method is stable in feeding of the aluminum oxide and better in control effect.
Description
[technical field]
The present invention relates to technical field of aluminum electrolysis, relate in particular to a kind of aluminum oxide control method that feeds intake.
[background technology]
Since last century the eighties, China's aluminum electrolysis industry starts to adopt dry cleaning technology, as the smoking gas containing fluorine producing in sorbent material absorption electrolytic process, in reducing pollutant emission, has reclaimed villiaumite with aluminum oxide, has reduced cost.
The objectionable impurities of distributing in electrolytic aluminum process is mainly hydrogen fluoride, and the hydrogen fluoride quantity discharged that enters gas cleaning reaches 25kg/t-Al.Before electrolyzer smoking gas containing fluorine enters deep bed filter from potroom smoke exhaust pipe, aluminum oxide is added in smoking gas containing fluorine, the oxidized aluminium absorption of hydrogen fluoride, aluminum oxide and the dust of taking out of with flue gas from electrolyzer are all separated in pocket type purification strainer, and the flue gas after purification enters in extraneous air after smoke exhaust fan is sent into chimney.
For the needs of electrolysis stably manufactured, it is stable that the charging capacity of aluminum oxide need keep, and to obtain the stable fluorinated alumina of fluorine content, and then ensures the stable of electrolyte ingredient in electrolyzer, guarantees the heat balance and mass balance of electrolyzer.The aluminum oxide of correlation technique feed intake control method adopt Root's blower by aluminum oxide from aluminum oxide warehouse rise to carry a fluorine storehouse, blanking from year fluorine storehouse toward electrolyzer, in blanking process this aluminum oxide feed intake control method adopt impact flow meter the charging capacity of aluminum oxide is measured, in the time that the aluminum oxide in pipeline is flowed through punching, punching can be to impact flow meter feedback signal, finally counted the charging capacity of aluminum oxide by impact flow meter, thereby according to the aluminum oxide charging capacity of statistics, aluminum oxide is fed intake and controlled, but impact flow meter in use can be subject to the wind that flows, magnetic field, vibration, the interference of the factors such as dust and impact, thereby produce some undesired signals that differ in size, in addition, packing bag fiber, cloth and the particle from caking being mingled with in aluminum oxide also can make the detection signal of impact flow meter be offset, cause aluminum oxide to feed intake unstable, affect the fluorine content of fluorinated alumina, in destruction electrolyzer, electrolyte ingredient is stable, cause electrolysis production fluctuation, reduced bath life and reduced quality product.Thereby the aluminum oxide of the correlation technique control method that feeds intake exists feed intake less stable, aluminum oxide of aluminum oxide to feed intake and control the poor deficiency of effect.
Therefore, be in fact necessary to provide a kind of new aluminum oxide control method that feeds intake to overcome above-mentioned technical problem.
[summary of the invention]
The technical issues that need to address of the present invention be to provide a kind of aluminum oxide feed intake stability better, control the good aluminum oxide of the effect control method that feeds intake.
A kind of aluminum oxide of the present invention control method that feeds intake, the method comprises the steps:
The first step: a kind of Root's blower is provided, starts described Root's blower before aluminum oxide feeds intake, the pressure-measuring device carrying according to described Root's blower is measured the air outlet pressure mean values P of the described Root's blower in a hour
1, according to relational expression P
1=A
1+ B
1q
1 2, calculate A
1value,
Wherein, A
1for correction, B
1for correction factor, Q
1for average charging capacity and the Q of aluminum oxide
1=0;
Second step: after aluminum oxide starts to feed intake, taking 3 days as one-period, calculate the average charging capacity Q of aluminum oxide in each cycle
2, work as Q
2with the difference of the average charging capacity Q of aluminum oxide of actual needs be less than Q value 3% time, measure the average charging capacity Q with described aluminum oxide
2the air outlet pressure value P of corresponding described Root's blower
2, according to relational expression P
2=A
1+ B
1q
2 2calculate B
1value;
The 3rd step: the air outlet pressure value P of measuring in real time described Root's blower
3, according to relational expression P
3=A
1+ B
1q
3 2calculate Q
3value, work as Q
3value while equating with the value of the average charging capacity Q of aluminum oxide of actual needs, the air outlet force value that is fixedly installed described Root's blower is P
3;
Work as Q
3value and the value of the average charging capacity Q of aluminum oxide of actual needs when unequal, according to relational expression B
2=(P
3-A
1)/Q
2calculate B
2value,
Wherein, B
2for second-order correction coefficient,
Again according to relational expression P
4=A
1+ B
2q
2calculate P
4value, and the air outlet force value that is fixedly installed described Root's blower is P
4.
Compared with correlation technique, beneficial effect of the present invention is, the accurate measurement that aluminum oxide is fed intake; Do not need newly-increased miscellaneous equipment, and saved impact flow meter, saved cost; That aluminum oxide feeds intake is stable, it is better to control effect.
[embodiment]
Below in conjunction with embodiment, the invention will be further described.
The invention provides a kind of aluminum oxide control method that feeds intake, the method comprises the steps: the first step: a kind of Root's blower is provided, before aluminum oxide feeds intake, start described Root's blower, the pressure-measuring device carrying according to described Root's blower is measured the air outlet pressure mean values P of the described Root's blower in a hour
1, according to relational expression P
1=A
1+ B
1q
1 2, calculate A
1value,
Wherein, A
1for correction, B
1for correction factor, Q
1for average charging capacity and the Q of aluminum oxide
1=0;
Second step: after aluminum oxide starts to feed intake, taking 3 days as one-period, calculate the average charging capacity Q of aluminum oxide in each cycle
2, work as Q
2with the difference of the average charging capacity Q of aluminum oxide of actual needs be less than Q value 3% time, measure the average charging capacity Q with described aluminum oxide
2the air outlet pressure value P of corresponding described Root's blower
2, according to relational expression P
2=A
1+ B
1q
2 2calculate B
1value;
The 3rd step: the air outlet pressure value P of measuring in real time described Root's blower
3, according to relational expression P
3=A
1+ B
1q
3 2calculate Q
3value, work as Q
3value while equating with the value of the average charging capacity Q of aluminum oxide of actual needs, the air outlet force value that is fixedly installed described Root's blower is P
3;
Work as Q
3value and the value of the average charging capacity Q of aluminum oxide of actual needs when unequal, according to relational expression B
2=(P
3-A
1)/Q
2calculate B
2value,
Wherein, B
2for second-order correction coefficient,
Again according to relational expression P
4=A
1+ B
2q
2calculate P
4value, and the air outlet force value that is fixedly installed described Root's blower is P
4.
The aluminum oxide that the invention provides the mathematical relation between a kind of clear and definite air outlet force value and average charging capacity of aluminum oxide of the Root's blower control method that feeds intake, the average charging capacity of aluminum oxide of the present invention refers to the weight of the aluminum oxide of input in section sometime.Can finally determine the air outlet force value of the Root's blower corresponding with the average charging capacity of aluminum oxide of actual needs by the method, after the air outlet pressure fixing of Root's blower is set to certain value, be fixedly installed the average charging capacity of aluminum oxide, thereby stablize the average charging capacity of aluminum oxide, control effect is better, and in addition, the method has also been saved the impact flow meter using in correlation technique, do not need additionally to increase miscellaneous equipment, thereby cost is lower simultaneously.
Below by specific embodiment, the invention will be further described.
The first step: a kind of Root's blower is provided, starts Root's blower before aluminum oxide feeds intake, the pressure-measuring device carrying according to Root's blower is measured the air outlet pressure mean values P of the Root's blower in a hour
1=7.4kPa, according to relational expression P
1=A
1+ B
1q
1 2, calculate A
1value, A
1=P
1=7.4kPa, wherein, A
1for correction, B
1for correction factor, Q
1for average charging capacity and the Q of aluminum oxide
1=0;
Second step: make the average charging capacity Q=15t/h of aluminum oxide of actual needs, after aluminum oxide starts to feed intake, taking 3 days as one-period, calculate the average charging capacity Q of aluminum oxide in each cycle
2=14.99t/h, because 3 percent of Q is 0.45t/h, Q-Q
2=0.01t/h, thereby Q
2be less than 3% of Q with the difference of the average charging capacity Q of aluminum oxide of actual needs, measure and average charging capacity Q
2the air outlet pressure value P of corresponding Root's blower
2=25.17kPa, according to relational expression P
2=A
1+ B
1q
2 2calculate B
1=0.079;
The 3rd step: the air outlet pressure value P of measuring in real time Root's blower
3=24.5kPa, according to relational expression P
3=A
1+ B
1q
3 2calculate Q
3=14.71t/h, due to Q
3value and the value of the average charging capacity Q of aluminum oxide of actual needs unequal, according to relational expression B
2=(P
2-A
1)/Q
2calculate B
2=0.076,
Wherein, B
2for second-order correction coefficient,
Again according to relational expression P
4=A
1+ B
2q
2calculate P
4value, and the air outlet force value that is fixedly installed Root's blower is P
4.
Compared with correlation technique, beneficial effect of the present invention is, the accurate measurement that aluminum oxide is fed intake; Do not need newly-increased miscellaneous equipment, and saved impact flow meter, saved cost; That aluminum oxide feeds intake is stable, it is better to control effect.
Above-described is only embodiments of the present invention, it should be pointed out that for the person of ordinary skill of the art at this, without departing from the concept of the premise of the invention, can also make improvement, but these all belongs to protection scope of the present invention.
Claims (1)
1. the aluminum oxide control method that feeds intake, is characterized in that, the method comprises the steps:
The first step: a kind of Root's blower is provided, starts described Root's blower before aluminum oxide feeds intake, the pressure-measuring device carrying according to described Root's blower is measured the air outlet pressure mean values P of the described Root's blower in a hour
1, according to relational expression P
1=A
1+ B
1q
1 2, calculate A
1value,
Wherein, A
1for correction, B
1for correction factor, Q
1for average charging capacity and the Q of aluminum oxide
1=0;
Second step: after aluminum oxide starts to feed intake, taking 3 days as one-period, calculate the average charging capacity Q of aluminum oxide in each cycle
2, work as Q
2with the difference of the average charging capacity Q of aluminum oxide of actual needs be less than Q value 3% time, measure the average charging capacity Q with described aluminum oxide
2the air outlet pressure value P of corresponding described Root's blower
2, according to relational expression P
2=A
1+ B
1q
2 2calculate B
1value;
The 3rd step: the air outlet pressure value P of measuring in real time described Root's blower
3, according to relational expression P
3=A
1+ B
1q
3 2calculate Q
3value, work as Q
3value while equating with the value of the average charging capacity Q of aluminum oxide of actual needs, the air outlet force value that is fixedly installed described Root's blower is P
3;
Work as Q
3value and the value of the average charging capacity Q of aluminum oxide of actual needs when unequal, according to relational expression B
2=(P
3-A
1)/Q
2calculate B
2value,
Wherein, B
2for second-order correction coefficient,
Again according to relational expression P
4=A
1+ B
2q
2calculate P
4value, and the air outlet force value that is fixedly installed described Root's blower is P
4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469025.6A CN104195597B (en) | 2014-09-16 | 2014-09-16 | Aluminum oxide feeds intake control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410469025.6A CN104195597B (en) | 2014-09-16 | 2014-09-16 | Aluminum oxide feeds intake control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104195597A true CN104195597A (en) | 2014-12-10 |
| CN104195597B CN104195597B (en) | 2016-08-17 |
Family
ID=52080956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410469025.6A Expired - Fee Related CN104195597B (en) | 2014-09-16 | 2014-09-16 | Aluminum oxide feeds intake control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104195597B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082135A (en) * | 2007-06-26 | 2007-12-05 | 中国铝业股份有限公司 | Aluminum cell low aluminum oxide concentration control method |
| CN201962386U (en) * | 2010-12-31 | 2011-09-07 | 青海西部矿业科技有限公司 | Real-time discharge monitoring system for aluminium electrolytic tank |
| CN201962385U (en) * | 2010-12-31 | 2011-09-07 | 青海西部矿业科技有限公司 | Alumina dense phase conveying and discharging device |
| CN102400182A (en) * | 2011-11-22 | 2012-04-04 | 中国铝业股份有限公司 | Method for controlling stability and uniformity of aluminum oxide concentration in aluminum electrolysis cell |
| CN103710730A (en) * | 2013-12-11 | 2014-04-09 | 中国铝业股份有限公司 | Apparatus for determining concentration of alumina in aluminum electrolysis cell, and method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1610935A1 (en) * | 1988-06-20 | 1996-08-27 | Братский алюминиевый завод | Method for automatic suppression of anode effect in aluminium electrolyzer |
-
2014
- 2014-09-16 CN CN201410469025.6A patent/CN104195597B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082135A (en) * | 2007-06-26 | 2007-12-05 | 中国铝业股份有限公司 | Aluminum cell low aluminum oxide concentration control method |
| CN201962386U (en) * | 2010-12-31 | 2011-09-07 | 青海西部矿业科技有限公司 | Real-time discharge monitoring system for aluminium electrolytic tank |
| CN201962385U (en) * | 2010-12-31 | 2011-09-07 | 青海西部矿业科技有限公司 | Alumina dense phase conveying and discharging device |
| CN102400182A (en) * | 2011-11-22 | 2012-04-04 | 中国铝业股份有限公司 | Method for controlling stability and uniformity of aluminum oxide concentration in aluminum electrolysis cell |
| CN103710730A (en) * | 2013-12-11 | 2014-04-09 | 中国铝业股份有限公司 | Apparatus for determining concentration of alumina in aluminum electrolysis cell, and method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郭桂桐: "氧化铝浓相输送试生产概况", 《轻金属》, no. 6, 20 June 1999 (1999-06-20), pages 36 - 39 * |
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| Publication number | Publication date |
|---|---|
| CN104195597B (en) | 2016-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Xin Inventor before: Liu Gexian Inventor before: Wang Boyi Inventor before: Yu Xuejun Inventor before: Hong Bo |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170922 Address after: 061000, Hebei, Cangzhou province Wuqiao County Ditch shop Xiang Village 52 Patentee after: Yang Xin Address before: Taoyuan County in Hunan province Changde city 415700 disk town Chuangyuan Industrial Park Patentee before: CHINA HUNAN CHUANGYUAN ALUMINIUM INDUSTRY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191210 Address after: 314000 Weibo Textile Industrial Park, wuyuantong street, Haiyan, Jiaxing City, Zhejiang Province Patentee after: HAIYAN HUAXING STANDARD PART MOLD PLANT Address before: 061000 Zhangjia circle village, Gou Gou Village, Wuqiao County, Cangzhou, Hebei, 52 Patentee before: Yang Xin |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20210916 |