CN103614574A - Calcium method-based roasting alkaline leaching process of vanadium ore coal - Google Patents
Calcium method-based roasting alkaline leaching process of vanadium ore coal Download PDFInfo
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- CN103614574A CN103614574A CN201310605452.8A CN201310605452A CN103614574A CN 103614574 A CN103614574 A CN 103614574A CN 201310605452 A CN201310605452 A CN 201310605452A CN 103614574 A CN103614574 A CN 103614574A
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- ammonium bicarbonate
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention provides a calcium method-based roasting alkaline leaching process of vanadium ore coal. The process comprises the specific steps of: performing crushing and wet-type ball milling on vanadium ore coal to obtain fine ore having the fineness ranging from 80 to 150 meshes; based on the weight of the fine ore, adding 12-16% of lime, evenly mixing the lime with the fine ore, adding proper amount of water and forming pellets; putting the pellets into a roasting furnace, increasing the temperature to the range from 1000 to 1050 DEG C, keeping the temperature for 2-3 hours, and then discharging the material until the temperature is reduced below 500 DEG C to obtain a roasted clinker; grinding the roasted clinker to the range from 60 meshes to 100 meshes; under the condition of the normal temperature, adding an ammonium bicarbonate solution having the mass percent concentration of 15-20% and stirring, wherein the dosage of the ammonium bicarbonate solution is 4-5 times of the weight of the roasted clinker; and then leaching for 90-120 minutes, and carrying out solid-liquid separation to obtain a vanadium-containing leachate. The calcium method-based roasting alkaline leaching process of vanadium ore coal has the advantage that a rational roasting temperature is chosen, the ammonium bicarbonate solution is taken as a leaching solution at the normal temperature, and the vanadium leaching rate is above 80%; the invention provides a new method of extracting vanadium from the vanadium ore coal; the new method is simple and reliable in process, easy for industrial production and low in pollution on environmental pollution.
Description
Technical field
The present invention relates to Rock coal containing alum ore deposit calcium method roasting alkali soaking technology.
Background technology
Rock coal containing alum and to be China as the independent deposit mining of vanadium containing vanadium clay main containing vanadium resource.In Rock coal containing alum, the grade of vanadium is lower, with V
2o
5represent to be generally 1.0% left and right.Grade containing vanadium in vanadium clay is conventionally slightly high than the grade of vanadium in bone coal, with V
2o
5represent to be generally 1.0%～3.0%.Vanadium in Rock coal containing alum and clay be take V(III) as main, have part for V(IV), V(V) seldom.Due to V(III) ionic radius (74pm) and Fe(II) ionic radius (74pm) equate, with Fe(III) ionic radius (64pm) also very approaching.Therefore, the V(III) mineral of generation hardly itself, but be present in the silicon-oxy tetrahedron structure containing mineral such as roscoelite, kaolinites with isomorphism.China was studied with containing the vanadium extraction of vanadium clay scherbinaite coal since the sixties in 20th century, started industrial production the seventies, and the technique of using is sodium roasting (NaC1)-water logging or acid leaching process.There are two major defects in this technique, and the one, because roasting process generates C
12, HC1, SO
2mixed gas and cause environmental pollution, the 2nd, vanadium recovery is commonly 45%-55%, makes the navajoite resource of 50% left and right can not get effectively utilizing and wasting.
Summary of the invention
For fear of existing Rock coal containing alum process for extracting vanadium contaminate environment in roasting process, improve vanadium recovery, the present invention proposes Rock coal containing alum ore deposit calcium method roasting alkali soaking technology.
The technical solution used in the present invention is as follows:
Rock coal containing alum ore deposit calcium method roasting alkali soaking technology, concrete steps are:
(1). containing vanadium ore reduction, wet ball-milling, obtaining fineness is 80-150 object breezes;
(2). take breeze weight as benchmark, add the lime of 12-16%, lime mixes with breeze, adds suitable quantity of water, makes pellet;
(3). pellet is put into stoving oven, is warming up to 1000-1050 ℃, keeps 2-3 hour, and then equitemperature is down to 500 ℃ and is come out of the stove below, obtains roasting grog;
(4). leaching: roasting grog is levigate to 60 order-100 orders; Under normal temperature condition, adding mass percent concentration is ammonium bicarbonate soln the stirring of 15-20%, and the consumption of ammonium bicarbonate soln is 4-5 times of roasting grog weight, and extraction time is 90-120 minute, and solid-liquid separation obtains containing vanadium leachate.
Beneficial effect: the present invention passes through rational maturing temperature, and adopts at normal temperatures ammonium bicarbonate soln as infusion solution, and V leaching rate reaches more than 80%; The present invention is the novel method method with Rock coal containing alum vanadium extraction, and its technique is simple, reliable, is easy to suitability for industrialized production, and environmental pollution is little.
Embodiment
embodiment 1:
Rock coal containing alum ore deposit calcium method roasting alkali soaking technology, concrete steps are:
(1). Rock coal containing alum (V
2o
5grade is 1.2%) broken, wet ball-milling, obtaining fineness is 100 object breezes;
(2). take breeze weight as benchmark, add 14% lime, lime mixes with breeze, adds suitable quantity of water, makes pellet;
(3). pellet is put into stoving oven, is warming up to 1050 ℃, keeps 2 hours, and then equitemperature is down to 500 ℃ and is come out of the stove below, obtains roasting grog;
(4). leaching: roasting grog is levigate to 80 orders; Under normal temperature condition, to add mass percent concentration be 15% ammonium bicarbonate soln and stir, and the consumption of ammonium bicarbonate soln is 4 times of roasting grog weight, and extraction time is 90 minutes, and solid-liquid separation obtains containing vanadium leachate, and V leaching rate can reach more than 80%.
embodiment 2:
Rock coal containing alum ore deposit calcium method roasting alkali soaking technology, concrete steps are:
(1). Rock coal containing alum (V
2o
5grade is 1.6%) broken, wet ball-milling, obtaining fineness is 150 object breezes;
(2). take breeze weight as benchmark, add 12% lime, lime mixes with breeze, adds suitable quantity of water, makes pellet;
(3). pellet is put into stoving oven, is warming up to 1000 ℃, keeps 3 hours, and then equitemperature is down to 500 ℃ and is come out of the stove below, obtains roasting grog;
(4). leaching: roasting grog is levigate to 100 orders; Under normal temperature condition, to add mass percent concentration be 20% ammonium bicarbonate soln and stir, and the consumption of ammonium bicarbonate soln is 5 times of roasting grog weight, and extraction time is 120 minutes, and solid-liquid separation obtains containing vanadium leachate, and V leaching rate can reach more than 90%.
In the present invention, it is that the vanadium lattice damage in ore is discharged and lime effect generation vanadic acid calcium that object is burnt in roasting, and now vanadium transfers 5 valencys to by 3 valencys, so stove is interior except having certain temperature, also should there is oxidizing atmosphere, in test, adopt the way of a small amount of air to reach this object.
In the present invention, more outstanding on V leaching rate impact with maturing temperature, when temperature reaches more than 1100 ℃, material sinters piece into, forms the glassiness or complicated silicate, and therefore, maturing temperature can not be lower than 1000 ℃, can not be higher than 1100 ℃.V leaching rate can reach more than 80% like this.
The object that the present invention leaches is that vanadium is relayed to solution from vanadic acid calcium, and the aqueous solution of bicarbonate of ammonia all can generate vanadic acid with the effect of vanadic acid calcium and ion enters solution, and calcium gets off with precipitation of calcium carbonate.
In the present invention, adopt normal temperature to leach, greatly reduce NH
4hCO
3consumption and do not affect the rate of soaking that turns of vanadium.
Claims (1)
1. Rock coal containing alum ore deposit calcium method roasting alkali soaking technology, concrete steps are:
(1). containing vanadium ore reduction, wet ball-milling, obtaining fineness is 80-150 object breezes;
(2). take breeze weight as benchmark, add the lime of 12-16%, lime mixes with breeze, adds suitable quantity of water, makes pellet;
(3). pellet is put into stoving oven, is warming up to 1000-1050 ℃, keeps 2-3 hour, and then equitemperature is down to 500 ℃ and is come out of the stove below, obtains roasting grog;
(4). leaching: roasting grog is levigate to 60 order-100 orders; Under normal temperature condition, adding mass percent concentration is ammonium bicarbonate soln the stirring of 15-20%, and the consumption of ammonium bicarbonate soln is 4-5 times of roasting grog weight, and extraction time is 90-120 minute, and solid-liquid separation obtains containing vanadium leachate.
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|---|---|---|---|
| CN201310605452.8A CN103614574A (en) | 2013-11-26 | 2013-11-26 | Calcium method-based roasting alkaline leaching process of vanadium ore coal |
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| CN201310605452.8A CN103614574A (en) | 2013-11-26 | 2013-11-26 | Calcium method-based roasting alkaline leaching process of vanadium ore coal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831090A (en) * | 2015-04-17 | 2015-08-12 | 中国科学院过程工程研究所 | Low-temperature normal-pressure leaching vanadium recovery method of vanadium-containing roasted clinker with ammonium bicarbonate solution |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724387A (en) * | 2005-06-22 | 2006-01-25 | 株洲市湘麒科技开发有限公司 | Process for extracting vanadium pentoxide from stone coal vanadium mining |
| CN101265523A (en) * | 2008-05-07 | 2008-09-17 | 湖南卓亚矿业有限责任公司 | Technique for extracting vanadium pentoxide by stone coal ore rotary kiln calcium-process roasting |
-
2013
- 2013-11-26 CN CN201310605452.8A patent/CN103614574A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724387A (en) * | 2005-06-22 | 2006-01-25 | 株洲市湘麒科技开发有限公司 | Process for extracting vanadium pentoxide from stone coal vanadium mining |
| CN101265523A (en) * | 2008-05-07 | 2008-09-17 | 湖南卓亚矿业有限责任公司 | Technique for extracting vanadium pentoxide by stone coal ore rotary kiln calcium-process roasting |
Non-Patent Citations (1)
| Title |
|---|
| 赵天平: "从含钒固体废弃物中回收钒的新方法", 《矿产综合利用》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831090A (en) * | 2015-04-17 | 2015-08-12 | 中国科学院过程工程研究所 | Low-temperature normal-pressure leaching vanadium recovery method of vanadium-containing roasted clinker with ammonium bicarbonate solution |
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Address after: Gui Ping village of Baofeng town in Shiyan city of Hubei Province Zhushan 442213 Applicant after: Hubei Qin Qin Zi Mining Co., Ltd. Address before: Gui Ping village of Baofeng town in Shiyan city of Hubei Province Zhushan 442213 Applicant before: ZHUSHAN COUNTY QINJIAHE MINING CO., LTD. |
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Free format text: CORRECT: APPLICANT; FROM: ZHUSHAN QINJIAHE MINING CO., LTD. TO: HUBEI QINJIAHE MINING CO., LTD. |
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Application publication date: 20140305 |