CN101880764A - Process for roasting stone coal vanadium ore by tunnel car bottom furnace - Google Patents
Process for roasting stone coal vanadium ore by tunnel car bottom furnace Download PDFInfo
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- CN101880764A CN101880764A CN 201010250580 CN201010250580A CN101880764A CN 101880764 A CN101880764 A CN 101880764A CN 201010250580 CN201010250580 CN 201010250580 CN 201010250580 A CN201010250580 A CN 201010250580A CN 101880764 A CN101880764 A CN 101880764A
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Abstract
The invention relates to a process for roasting stone coal vanadium ore by a tunnel car bottom furnace, in particular to a production process for quickly oxidizing and roasting the stone coal vanadium ore by using a tunnel car bottom furnace for replacing traditional flat kilns, rotary kilns and the like. The technical scheme comprises the following steps: proportioning and mixing the materials of the stone coal vanadium ore; pressing or granulating the mixture into balls; loading the balls into a material box on a trolley through an automatic material distribution machine; enabling the balls to enter the tunnel car bottom furnace for oxidizing and roasting; discharging through an automatic discharging machine after cooling; and then, carrying out the next process. The invention has the beneficial effects that by adopting an oxygen-enriched combustion technology, strong oxidizing atmosphere in the furnace can be ensured, thus thorough roasting of the stone coal vanadium ore in the state of the strong oxidizing atmosphere can be ensured, the sintering phenomenon can not occur, the roasting conversion rate of vanadium can reach more than 75% and is improved by 25% as compared with the traditional technology, and simultaneously, the resource waste is reduced; and by using the tunnel car bottom furnace as the roasting equipment of the stone coal vanadium ore, because automated continuous production is realized, the production capacity per unit can reach more than 300000 tons and is improved by more than 15 times as compared with the traditional technology, and the production cost is also reduced.
Description
Affiliated technical field:
The present invention relates to a kind of process for roasting stone coal vanadium ore by tunnel car bottom furnace, particularly replace the production technique that traditional flat kiln, rotary kiln etc. carry out quick oxidizing roasting to bone coal navajoite with tunnel car stove.
Background technology:
Bone coal navajoite is produced Vanadium Pentoxide in FLAKES (V
2O
5) in the production technique roasting be vital process procedure.The technology of tradition roasting bone coal navajoite, be to make in pack into behind the ball flat kiln or the rotary kiln bone coal navajoite is levigate, roasting is carried out in insulation in 800～900 ℃ temperature range in 3～4 hours time, this technology is because equipment is backward, there are the following problems: 1, the oxidation effectiveness difference exists the clinkering phenomenon to cause the transformation efficiency of vanadium to descend, particularly the higher bone coal navajoite of carbon containing can't be realized oxidizing roasting, causes the high-carbon bone coal navajoite to utilize and causes the wasting of resources; 2, environmental pollution is serious; 3, industrialization production capacity is low; 4, the big level of automation of labor strength is low.5, the roasting transformation efficiency of vanadium only is 60%.
Summary of the invention:
The object of the invention provides a kind of process for roasting stone coal vanadium ore by tunnel car bottom furnace, and rate of roasting is accelerated, and the transformation efficiency of vanadium is improved, and investment reduces significantly, cost reduces significantly, solves the problems referred to above that exist in the background technology.
Technical scheme of the present invention is:
Process for roasting stone coal vanadium ore by tunnel car bottom furnace, comprise following processing step: with bone coal navajoite prepare burden, batch mixing, pressure ball or make ball, in the hopper on the automatic distributing machine is packed pelletizing in chassis, enter into the tunnel car bottom furnace again, carry out oxidizing roasting, cooling is after the automatic emptying machine discharging enters next procedure, and special feature of the present invention is pelletizing to be layered in the hopper on the tunnel car bottom furnace chassis carry out oxidizing roasting.
The tunnel car bottom furnace is also referred to as tunnel furnace, is known furnace equipment, and the present invention is applied to bone coal navajoite with the tunnel car bottom furnace to produce in the production technique of Vanadium Pentoxide in FLAKES.
Pelletizing is contained in the chassis hopper that has four wheels, enters successively in the tunnel car bottom furnace through preheating, oxidizing roasting, cooling three phases; The oxidizing roasting reaction parameter of tunnel car bottom furnace: layer thickness is 100～600 ㎜, and roasting time is at 120～240 minutes, 800～900 ℃ of maturing temperatures, and furnace atmosphere is a strong oxidizing atmosphere, furnace pressure is a pressure-fired.
Keeping furnace atmosphere is that strong oxidizing atmosphere is the gordian technique of oxidizing roasting.Because contain a certain proportion of carbon in the bone coal navajoite, carbon also can produce burning when roasting, if can not allow its rapid combustion, reduction reaction will take place mineral aggregate itself and the too high meeting of temperature produces the clinkering phenomenon, and this transformation efficiency to vanadium is disadvantageous.The technical measures of accelerating combustionvelocity are coefficient of excess air α＞1.0 when improving burning to greatest extent, technical measures of the present invention are: 1, add combustion unit at the tunnel car bottom furnace, regulate the air proportional quantity on the outer heating combustion unit, coefficient of excess air α＞1.0 during burning are strong oxidizing atmosphere to guarantee stove internal combustion atmosphere; 2, set up oxygen-enriching device, this device is to utilize the oxygen-rich air after the waste heat heat exchange of kiln to spray in the stove at a high speed, satisfy the needs of oxidizing atmosphere in carbonaceous material when burning bed of material, this oxygen-rich air both can be made combustion air usefulness, and attemperation is used in the time of can doing again that the carbonaceous material spontaneous ignition temperature is too high in the stove.
The invention has the beneficial effects as follows:
1, adopt oxygen-enriched combustion technology can guarantee strong oxidizing atmosphere in the stove, thereby can guarantee bone coal navajoite thorough roasting under the strong oxidizing atmosphere state, the clinkering phenomenon can not occur, the roasting transformation efficiency of vanadium can reach more than 75%, improve 25% than traditional technology, reduced the wasting of resources simultaneously.
2, adopt the roasting apparatus of tunnel car bottom furnace as bone coal navajoite, owing to realized that automatic continuous production, separate unit production capacity can reach more than 300,000 tons, improve production capacity more than 15 times than traditional technology, production cost also descends thereupon.
Description of drawings:
Accompanying drawing is an embodiment of the invention synoptic diagram;
Among the figure: tunnel car bottom furnace 1, chassis 2, hopper 3, pelletizing 4, gasburner 5, oxygen-rich air burner 6, combustion channels 7.
Embodiment:
Below in conjunction with accompanying drawing, the invention will be further described by embodiment.
Process for roasting stone coal vanadium ore by tunnel car bottom furnace, comprise following processing step: with bone coal navajoite prepare burden, batch mixing, pressure ball or make ball, in the hopper on the automatic distributing machine is packed pelletizing in chassis, enter into the tunnel car bottom furnace again, carry out oxidizing roasting, cooling is after the automatic emptying machine discharging enters next procedure, and special feature of the present invention is pelletizing to be layered in the hopper on the tunnel car bottom furnace chassis carry out oxidizing roasting.
Pelletizing 4 is contained in the hopper 3 on the chassis 2, enters successively in the tunnel car bottom furnace 1 through preheating, oxidizing roasting, cooling three phases; The oxidizing roasting reaction parameter of tunnel car bottom furnace: layer thickness is 100～600 ㎜, and roasting time is at 120～240 minutes, 800～900 ℃ of maturing temperatures, and furnace atmosphere is a strong oxidizing atmosphere, furnace pressure is a pressure-fired.
The technical measures of accelerating combustionvelocity are coefficient of excess air α＞1.0 when improving burning to greatest extent, technical measures of the present invention are: 1, add combustion unit at the tunnel car bottom furnace, comprise coal gas burner 5, blast tube 7 etc., regulate the air proportional quantity on the outer heating combustion unit, coefficient of excess air α＞1.0 during burning are strong oxidizing atmosphere to guarantee stove internal combustion atmosphere; 2, set up oxygen-enriching device, it is exactly oxygen-rich air burner 6, this device is to utilize the oxygen-rich air after the waste heat heat exchange of kiln to spray in the stove at a high speed, the needs of oxidizing atmosphere in the bed of material when satisfying the carbonaceous material burning, this oxygen-rich air both can be made combustion air usefulness, and attemperation is used in the time of can doing again that the carbonaceous material spontaneous ignition temperature is too high in the stove.
Claims (4)
1. process for roasting stone coal vanadium ore by tunnel car bottom furnace, it is characterized in that comprising following processing step: with bone coal navajoite prepare burden, batch mixing, pressure ball or make ball, in the hopper on the automatic distributing machine is packed pelletizing in chassis, enter into the tunnel car bottom furnace again, carry out oxidizing roasting, cooling is after the automatic emptying machine discharging enters next procedure.
2. the process for roasting stone coal vanadium ore by tunnel car bottom furnace according to claim 1 is characterized in that pelletizing (4) is contained in the hopper (3) on the chassis (2), enters successively in the tunnel car bottom furnace (1) through preheating, oxidizing roasting, cooling three phases; The oxidizing roasting reaction parameter of tunnel car bottom furnace: layer thickness is 100～600 ㎜, and roasting time is at 120～240 minutes, 800～900 ℃ of maturing temperatures, and furnace atmosphere is a strong oxidizing atmosphere, furnace pressure is a pressure-fired.
3. according to claim 1 or 2 described process for roasting stone coal vanadium ore by tunnel car bottom furnace, it is characterized in that the tunnel car bottom furnace adds combustion unit, regulate the air proportional quantity on the outer heating combustion unit, coefficient of excess air α＞1.0 during burning are strong oxidizing atmosphere to guarantee stove internal combustion atmosphere.
4. according to claim 1 or 2 described process for roasting stone coal vanadium ore by tunnel car bottom furnace, it is characterized in that setting up oxygen-enriching device, this device is to utilize the oxygen-rich air after the waste heat heat exchange of kiln to spray in the stove at a high speed, the needs of oxidizing atmosphere in the bed of material when satisfying the carbonaceous material burning, this oxygen-rich air both can be made combustion air usefulness, and attemperation is used in the time of can doing again that the carbonaceous material spontaneous ignition temperature is too high in the stove.
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| CN 201010250580 CN101880764A (en) | 2010-08-11 | 2010-08-11 | Process for roasting stone coal vanadium ore by tunnel car bottom furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399976A (en) * | 2011-11-30 | 2012-04-04 | 长沙矿冶研究院有限责任公司 | Roasting pretreatment process for extracting vanadium pentoxide from high-carbon scherbinaite-containing coal mine and vanadium pentoxide extracting method |
| CN102492832A (en) * | 2011-12-30 | 2012-06-13 | 北京神雾环境能源科技集团股份有限公司 | Method for roasting vanadium-containing bone coal by utilization of rich oxygen |
| CN104694735A (en) * | 2015-02-17 | 2015-06-10 | 河北钢铁股份有限公司承德分公司 | Method for improving oxidization efficiency in vanadium slag roasting process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215647A (en) * | 2008-01-16 | 2008-07-09 | 中南大学 | Roasting technique for extracting vanadium from stone coal vanadium ore |
| CN101265522A (en) * | 2007-03-16 | 2008-09-17 | 闫国正 | Technique for extracting vanadium pentoxide by tunnel kiln calcification roasting |
| CN101504248A (en) * | 2009-03-25 | 2009-08-12 | 十堰绿华石煤研究所有限责任公司 | Tunnel type vanadium oxidization roasting vertical kiln and its baking method |
| CN201411379Y (en) * | 2009-04-15 | 2010-02-24 | 黄云山 | Oxidation roasting furnace for vanadic oxide |
-
2010
- 2010-08-11 CN CN 201010250580 patent/CN101880764A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265522A (en) * | 2007-03-16 | 2008-09-17 | 闫国正 | Technique for extracting vanadium pentoxide by tunnel kiln calcification roasting |
| CN101215647A (en) * | 2008-01-16 | 2008-07-09 | 中南大学 | Roasting technique for extracting vanadium from stone coal vanadium ore |
| CN101504248A (en) * | 2009-03-25 | 2009-08-12 | 十堰绿华石煤研究所有限责任公司 | Tunnel type vanadium oxidization roasting vertical kiln and its baking method |
| CN201411379Y (en) * | 2009-04-15 | 2010-02-24 | 黄云山 | Oxidation roasting furnace for vanadic oxide |
Non-Patent Citations (2)
| Title |
|---|
| 《有色金属》 20090531 史玲，等 含钒石煤提钒工艺研究 60-61 1-4 第61卷, 第2期 2 * |
| 《有色金属》 20100228 宁华，等 石煤提钒焙烧工艺分析 80-81 2-4 第62卷, 第1期 2 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399976A (en) * | 2011-11-30 | 2012-04-04 | 长沙矿冶研究院有限责任公司 | Roasting pretreatment process for extracting vanadium pentoxide from high-carbon scherbinaite-containing coal mine and vanadium pentoxide extracting method |
| CN102399976B (en) * | 2011-11-30 | 2013-08-28 | 长沙矿冶研究院有限责任公司 | Roasting pretreatment process for extracting vanadium pentoxide from high-carbon scherbinaite-containing coal mine and vanadium pentoxide extracting method |
| CN102492832A (en) * | 2011-12-30 | 2012-06-13 | 北京神雾环境能源科技集团股份有限公司 | Method for roasting vanadium-containing bone coal by utilization of rich oxygen |
| CN104694735A (en) * | 2015-02-17 | 2015-06-10 | 河北钢铁股份有限公司承德分公司 | Method for improving oxidization efficiency in vanadium slag roasting process |
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