CN103011289A - Continuous device for preparing vanadium pentoxide from ammonium metavanadate - Google Patents
Continuous device for preparing vanadium pentoxide from ammonium metavanadate Download PDFInfo
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- CN103011289A CN103011289A CN201110290388XA CN201110290388A CN103011289A CN 103011289 A CN103011289 A CN 103011289A CN 201110290388X A CN201110290388X A CN 201110290388XA CN 201110290388 A CN201110290388 A CN 201110290388A CN 103011289 A CN103011289 A CN 103011289A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention belongs to the technical field of chemical metallurgy, and particularly relates to a continuous device for preparing vanadium pentoxide from ammonium metavanadate. The continuous device for preparing vanadium pentoxide from ammonium metavanadate comprises a calcinator, a flue gas recovery bin, a cooling water tank, a spraying device, an exhaust fan, a smoke extracting tube and an exhaust pipe, wherein the calcinator is communicated with the flue gas recovery bin through the smoke extracting tube; the smoke extracting tube passes through the cooling water tank; the spraying pipe of the spraying device is communicated with the flue gas recovery bin and the smoke extracting tube; a circulating pipe is communicated with the flue gas recovery bin, and the exhaust fan is arranged on the exhaust pipe and communicated with the flue gas recovery bin. The continuous device is simple and reasonable in structure, short in calcination time, automatic to control temperature, energy-saving and environment-friendly, and can finish four links of dewatering, deaminizing, baking and ammonia recovery once.
Description
Technical field
The invention belongs to the chemical metallurgy technical field, specifically relate to a kind of continuous apparatus for preparing Vanadium Pentoxide in FLAKES with ammonium meta-vanadate.
Background technology
Ammonium meta-vanadate (NH
4VO
3) calcining deamination produce V
2O
5An important step in the vanadium metallurgical process, from ammonium meta-vanadate (NH
4VO
3) obtain Vanadium Pentoxide in FLAKES and generally will pass through dehydration, deamination and three steps of fusing.Industrial fusing ammonium poly-vanadate film-making vanadium, external three sections method of fusion that adopt are namely at first controlled 100～200 ℃ of temperature more in moisture eliminator; Dewater; then in rotary kiln through 550 ℃ of left and right sides deaminations, obtain the powdery Vanadium Pentoxide in FLAKES, at last the powdery Vanadium Pentoxide in FLAKES is melted in 750 ℃ of left and right sides electric furnaces; come out of the stove and cast certain thickness thin slice by the rotation granulation platform of water-cooled, the rate of recovery of this method vanadium can reach more than 99%.China's fusing ammonium meta-vanadate film-making vanadium all adopts single stage method at present, namely finishes dehydration, deamination and three steps of fusing at same seat smelting furnace.Smelting furnace adopts reverberatory furnace, has ring flange that it is divided into Three regions in the stove: first zone is drying zone, and the control temperature is 300～450 ℃; Second zone is the resolver, and the control temperature is 450～600 ℃; Three regions be melt oxidation district temperature greater than 650 ℃, the rate of recovery of this method vanadium is generally about 95%.
Although three sections external method of fusion vanadium recoveries are high, have that facility investment is large, complicated operation and production link is many, labour productivity is a low defective.Domestic single stage method, not only vanadium recovery is on the low side, and temperature is wayward, and energy consumption is high, and the ammonia of generation directly discharges, and environmental pollution is serious.If excess Temperature can cause the volatilization loss of Vanadium Pentoxide in FLAKES in melting process, especially more than 900 ℃, the vanadium loss is serious, because drying and fusing are to carry out in a stove simultaneously, dried powdery Vanadium Pentoxide in FLAKES is easy to be blown away by hot blast, also can cause the loss of vanadium.The nitrogen that is decomposited by ammonium meta-vanadate in addition at high temperature can decompose release hydrogen, Vanadium Pentoxide in FLAKES is reduced to the at a low price barium oxide of infusibility, only have and after ammonia is all deviate from, Low Valent Vanadium could be continued to be oxidized to the low-melting Vanadium Pentoxide in FLAKES of high price, therefore single stage method not only the cycle long, heat utilization efficiency is low, energy consumption is high, and vanadium recovery is on the low side.
Summary of the invention
What the object of the present invention is to provide a kind of simple in structure, easy to operate, energy-conserving and environment-protective prepares the continuous apparatus of Vanadium Pentoxide in FLAKES with ammonium meta-vanadate.
For solving the problems of the technologies described above, the continuous apparatus for preparing Vanadium Pentoxide in FLAKES with ammonium meta-vanadate provided by the present invention comprises: calcining furnace, off-gas recovery bucket, cooling water tank, spray equipment, vacuum fan, smoke extracting tube and vapor pipe; Calcining furnace is communicated with the off-gas recovery bucket by smoke extracting tube, and smoke extracting tube passes cooling water tank; The shower of spray equipment is communicated with off-gas recovery bucket, smoke extracting tube, and other has a circulation tube to be communicated with the off-gas recovery bucket; Vacuum fan is located on the vapor pipe and is communicated with the off-gas recovery bucket.
Described calcining furnace comprises: body of heater, electrothermal tube, roasting plate rack, temperature-sensing probe and smoke exhaust pipe, body of heater are square, and the front is provided with salable fire door; Inboard wall of furnace body is evenly laid electrothermal tube except top and front, roasting plate rack places in the middle of the body of heater; Smoke exhaust pipe is located at the body of heater top near fire door one side, and the smoke exhaust pipe upper end is provided with non-tight gear cigarette plate near the smoke outlet place; Temperature-sensing probe inserts in the body of heater from the body of heater top, the external temperature Controlling System.
Described off-gas recovery bottom of the barrel is funnel-form, in establish dividing plate, be covered with the froth breaking plate of aperture, leakage fluid dram is arranged at the bottom, the interval is left with the bucket end in the dividing plate lower end, all the other limits and bucket wall seal welding, after injecting reaction solution in the bucket, dividing plate can be separated into two independently air chambers with part more than the liquid level in the bucket, and the following maintenance of liquid level is communicated with; The froth breaking plate level is fixed in the bucket, and its diameter is suitable with the bucket internal diameter, and is become two semicircles by baffle for separating.
Described shower front end is provided with two shower nozzles, and one is located at froth breaking plate top in the off-gas recovery bucket, and another is located in the smoke extracting tube.
The circulation tube of described spray equipment is communicated with the off-gas recovery bucket below the froth breaking plate.
The interface of the shower of described spray equipment, circulation tube and off-gas recovery bucket bucket wall is respectively in the dividing plate both sides.
Described smoke extracting tube one end is communicated with calcining furnace below the smoke exhaust pipe plate, is provided with a plate near interface, and the other end inserts the off-gas recovery bucket and passes the froth breaking plate by the cooling water tank sealing.
The invention has the beneficial effects as follows: can disposablely finish dehydration, deamination, roasting and Ammonia recovery four processes, roasting time is short, and temperature is controlled automatically, energy-conserving and environment-protective.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 prepares the continuous apparatus schematic diagram of Vanadium Pentoxide in FLAKES with ammonium meta-vanadate
Embodiment
The continuous apparatus for preparing Vanadium Pentoxide in FLAKES with ammonium meta-vanadate shown in the accompanying drawing comprises: calcining furnace 1, off-gas recovery bucket 13, cooling water tank 9, spray equipment 26, vacuum fan 19, smoke extracting tube 8 and vapor pipe 20, calcining furnace 1 inwall is except top and fire door one side, evenly lay electrothermal tube 21,22,23,24, keep between each side electrothermal tube being communicated with, by electrothermal tube 21 external source Controlling System, place roasting plate rack 4 in the middle of in the stove, calcining furnace 1 top one side is inserted with the temperature-sensing probe 3 of external source Controlling System, crown center near the fire door place vertically be provided with one with the interior smoke exhaust pipe 5 that is communicated with of stove, smoke exhaust pipe 5 upper ends are provided with non-tight gear cigarette plate 6 near the smoke outlet place, below near gear cigarette plate 6, locate, smoke extracting tube 8 one ends are communicated with smoke exhaust pipe 5, and be provided with a plate 7 near interface, the other end inserts off-gas recovery bucket 13 and passes froth breaking plate 16 by cooling water tank 9 sealings, cooling water tank 9 seal weldings are in off-gas recovery bucket 13 tops one side, off-gas recovery bucket 13 bottoms are funnel-form, establish the froth breaking plate that is covered with aperture in the bucket, central vertical is provided with a dividing plate 14, leakage fluid dram 25 is arranged at the bottom, the interval is left with the bucket end in dividing plate 14 lower ends, all the other limits and bucket wall seal welding, after injecting reaction solution in the bucket, dividing plate 14 can be separated into two independently air chambers 17 with part more than the liquid level in the bucket, 18, and the following maintenance of liquid level is communicated with, the froth breaking plate level is fixed in the bucket, its diameter is suitable with the bucket internal diameter, and become two semicircles 15 by baffle for separating, 16, be provided with a vapor pipe 20 that connects vacuum fan 19 at the top of air chamber 17, shown in shower 10 levels of spray equipment 26 pass air chamber 18 outer walls, and extend in the smoke extracting tube 8 by 8 barrels of inner tube walls of smoke extracting tube, shower 10 front ends are provided with two shower nozzles 11,12, shower nozzle 11 is located at air chamber 18 interior froth breaking plates 16 tops, shower nozzle 12 is located in the smoke extracting tube 8, and the circulation tube 27 of spray equipment 26 is communicated with off-gas recovery bucket 13 near froth breaking plate 15 belows.
At first, inject 1: 1 sulfuric acid reaction liquid to off-gas recovery bucket 13 and spray equipment 26, sulfuric acid reaction liquid liquid level in the off-gas recovery bucket 13 should remain on more than 8 barrels of inner port of smoke extracting tube and shower nozzle also just touch below the froth breaking plate 15,16 below 11, plug plate 7, open gear cigarette plate 6, the baking tray layering that ammonium meta-vanadate is housed is placed on the calcining furnace 1 interior roasting plate rack 4, close upper furnace door, then, according to producing season, temperature of reaction and time, the temperature setting of temperature controlling system is set to 390 ℃---420 ℃, plugged begins heating; Moisture content is discharged by smoke exhaust pipe 5, when temperature reaches 160 ℃ of left and right sides, dry link is finished, plug gear cigarette plate 6, open plate 7, start vacuum fan 19, spray equipment 26 and cooling water circulation, under the effect of vacuum fan 19, the hot ammonia that decomposites in the calcining furnace and the air that enters from smoke exhaust pipe 5 are drawn into after smoke extracting tube 8 coolings the sulfuric acid reaction liquid in the off-gas recovery bucket 13, ammonia and sulfuric acid reaction generate ammonium sulfate, the ammonia of overflowing from liquid level falls after rise to reaction solution after then generating ammonium sulfate with sulfuric acid liquid reaction through spray equipment 26 ejections, and remaining air is discharged through vapor pipe 20; When calcining furnace 1 interior temperature reaches default temperature, the power control system auto power off, stopped heating, the powdery Vanadium Pentoxide in FLAKES cooling of generation was come out of the stove after 30 minutes.
Claims (5)
1. a continuous apparatus for preparing Vanadium Pentoxide in FLAKES with ammonium meta-vanadate is characterized in that it comprises calcining furnace, off-gas recovery bucket, cooling water tank, spray equipment, vacuum fan, smoke extracting tube and vapor pipe; Calcining furnace is communicated with the off-gas recovery bucket by smoke extracting tube, and smoke extracting tube passes cooling water tank; The shower of spray equipment is communicated with off-gas recovery bucket, smoke extracting tube, and other has a circulation tube to be communicated with the off-gas recovery bucket; Vacuum fan is located on the vapor pipe and is communicated with the off-gas recovery bucket.
2. continuous apparatus according to claim 1, it is characterized in that described calcining furnace comprises: body of heater, electrothermal tube, roasting plate rack, temperature-sensing probe and smoke exhaust pipe, body of heater are square, and the front is provided with salable fire door; Inboard wall of furnace body is evenly laid electrothermal tube except top and front, roasting plate rack places in the middle of the body of heater; Smoke exhaust pipe is located at the body of heater top near fire door one side, and the smoke exhaust pipe upper end is provided with non-tight gear cigarette plate near the smoke outlet place; Temperature-sensing probe inserts in the body of heater from the body of heater top, the external temperature Controlling System.
3. continuous apparatus according to claim 1 is characterized in that described off-gas recovery bottom of the barrel is funnel-form, in establish dividing plate, be covered with the froth breaking plate of aperture, leakage fluid dram is arranged at the bottom; The interval is left with the bucket end in the dividing plate lower end, all the other limits and a bucket wall seal welding, and after injecting reaction solution in the bucket, dividing plate can be separated into two independently air chambers with part more than the liquid level in the bucket, and the following maintenance of liquid level is communicated with; The froth breaking plate level is fixed in the bucket, and its diameter is suitable with the bucket internal diameter, and is become two semicircles by baffle for separating.
4. continuous apparatus according to claim 1 is characterized in that the shower front end of described spray equipment is provided with two shower nozzles, and one is located at froth breaking plate top in the off-gas recovery bucket, and another is located in the smoke extracting tube; Circulation tube is communicated with the off-gas recovery bucket below the froth breaking plate; The interface of shower, circulation tube and off-gas recovery bucket bucket wall is respectively in the dividing plate both sides.
5. continuous apparatus according to claim 1 is characterized in that described smoke extracting tube one end is communicated with calcining furnace below the smoke exhaust pipe plate, is provided with a plate near interface, and the other end inserts the off-gas recovery bucket and passes the froth breaking plate by the cooling water tank sealing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110290388XA CN103011289A (en) | 2011-09-28 | 2011-09-28 | Continuous device for preparing vanadium pentoxide from ammonium metavanadate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110290388XA CN103011289A (en) | 2011-09-28 | 2011-09-28 | Continuous device for preparing vanadium pentoxide from ammonium metavanadate |
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| CN103011289A true CN103011289A (en) | 2013-04-03 |
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| CN201110290388XA Pending CN103011289A (en) | 2011-09-28 | 2011-09-28 | Continuous device for preparing vanadium pentoxide from ammonium metavanadate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229887A (en) * | 2014-09-06 | 2014-12-24 | 中信锦州金属股份有限公司 | Production method and production device of powdery vanadium pentoxide |
| CN109097667A (en) * | 2018-08-06 | 2018-12-28 | 宁夏源冶盛工贸有限公司 | A kind of production equipment and its technique of metavanadic acid ammonia production vanadium iron |
| CN110272069A (en) * | 2019-06-12 | 2019-09-24 | 内乡县万鑫化冶有限公司 | A kind of integrated drying deamination oxidation fusion moviemaking system of vanadic anhydride |
| CN111592041A (en) * | 2020-06-05 | 2020-08-28 | 攀钢集团钒钛资源股份有限公司 | Melting furnace and method for smelting vanadium pentoxide by using same |
| CN113998738A (en) * | 2021-11-09 | 2022-02-01 | 攀钢集团研究院有限公司 | Method for preparing vanadium pentoxide by using alkalescent vanadium solution and recycling pickling solution |
-
2011
- 2011-09-28 CN CN201110290388XA patent/CN103011289A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104229887A (en) * | 2014-09-06 | 2014-12-24 | 中信锦州金属股份有限公司 | Production method and production device of powdery vanadium pentoxide |
| CN109097667A (en) * | 2018-08-06 | 2018-12-28 | 宁夏源冶盛工贸有限公司 | A kind of production equipment and its technique of metavanadic acid ammonia production vanadium iron |
| CN109097667B (en) * | 2018-08-06 | 2020-08-18 | 宁夏源冶盛工贸有限公司 | Production equipment and process for producing ferrovanadium from ammonium metavanadate |
| CN110272069A (en) * | 2019-06-12 | 2019-09-24 | 内乡县万鑫化冶有限公司 | A kind of integrated drying deamination oxidation fusion moviemaking system of vanadic anhydride |
| CN110272069B (en) * | 2019-06-12 | 2022-04-22 | 内乡县万鑫化冶有限公司 | Vanadium pentoxide integrates stoving deamination oxidation melting film-making system |
| CN111592041A (en) * | 2020-06-05 | 2020-08-28 | 攀钢集团钒钛资源股份有限公司 | Melting furnace and method for smelting vanadium pentoxide by using same |
| CN111592041B (en) * | 2020-06-05 | 2022-10-11 | 攀钢集团钒钛资源股份有限公司 | Melting furnace and method for smelting vanadium pentoxide by using same |
| CN113998738A (en) * | 2021-11-09 | 2022-02-01 | 攀钢集团研究院有限公司 | Method for preparing vanadium pentoxide by using alkalescent vanadium solution and recycling pickling solution |
| CN113998738B (en) * | 2021-11-09 | 2023-11-10 | 攀钢集团研究院有限公司 | Method for preparing vanadium pentoxide and recycling pickling solution by using weak alkaline vanadium liquid |
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Application publication date: 20130403 |