CN103837532A - Method for rapidly accurately measuring vanadium in vanadium-titanium iron powder - Google Patents
Method for rapidly accurately measuring vanadium in vanadium-titanium iron powder Download PDFInfo
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- CN103837532A CN103837532A CN201210509882.5A CN201210509882A CN103837532A CN 103837532 A CN103837532 A CN 103837532A CN 201210509882 A CN201210509882 A CN 201210509882A CN 103837532 A CN103837532 A CN 103837532A
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Abstract
The invention discloses a method for rapidly accurately measuring vanadium in vanadium-titanium iron powder. The method comprises the following steps of dissolving a sample with nexion mixed acid (1+2), restoring vanadium, chromium and other oxides by using a ferrous sulfate solution (1%), oxidizing the tetravalence vanadium into pentavalent vanadium by using a potassium permanganate solution (1%), and restoring the superfluous potassium permanganate by a sodium nitrite solution (1%) under the existence of a urea solution (10%), and taking; and titrating by using an ammonium ferrous sulfate standard solution until the end that the solution is changed to yellow green from red, wherein a phenylated neighboring group benzoic acid (1%) is used as a tracer agent, converting the content of the sample by using the similar standard sample, and measuring the content of the vanadium. The method provided by the invention has the advantages that an analysis process is short, the operation is simple, the accuracy is relatively good, and the vanadium in the vanadium-titanium iron powder is rapidly accurately measured.
Description
Technical field
The present invention relates to metallurgical analysis technical field, specifically a kind of method of vanadium in rapid and accurate determination V-Ti-Fe concentrate fines.
Background technology:
Vanadium is oxyphilic element, there is no simple substance at occurring in nature, what its compound form disperseed is present in various mineral, vanadium magnetoil menite is exactly wherein a kind of, the method of traditional mensuration vanadium pentoxide is " phosphotungstic acid spectrophotometric method " and " N-benzoyl hydroxylamine extraction spectrophotometric method; the feature of these two kinds of methods is that first alkali fusion, acidleach are got, then constant volume separatory develops the color survey absorbance; also need if desired to extract rear colour developing; effective to low micro content; but analysis process length, complicated operation, influence factor are many, can not meet the express-analysis needs of production.
Summary of the invention:
The object of the invention is for the deficiencies in the prior art, consider that vanadium pentoxide molecular weight ratio is larger, select " direct titrimetric method ", the method for vanadium in a kind of rapid and accurate determination V-Ti-Fe concentrate fines is provided.
The present invention is achieved by the following technical solutions: a kind of method of vanadium in rapid and accurate determination V-Ti-Fe concentrate fines, comprise the following steps: sample sulphur phosphorus acid mixture (1+2) dissolves, first use copperas solution (1%) by vanadium, chromium and other Reduction of Oxides, then use liquor potassic permanganate (1%) that tetravalence vanadium is oxidized to pentavalent, excessive potassium permanganate reduces with sodium nitrite solution (1%) under urea liquid (10%) exists, taking benzene for adjacent yl benzoic acid (1%) as indicator, with the titration of iron ammonium sulfate standard solution, being become yellow green to solution from redness is terminal, with the content of close standard model conversion sample, measure whereby vanadium amount.
Agents useful for same of the present invention: 1, sulphur phosphorus acid mixture (1+2), 2, copperas solution (1%), 3, liquor potassic permanganate (1%), 4, urea liquid (10%) preparation on the same day, 5, sodium nitrite solution (1%), 6, benzene is for ortho-aminobenzoic acid indicator (0.2%): claim 0.2 gram of indicator to be dissolved in 100 milliliters of sodium carbonate (0.2%), and 7, iron ammonium sulfate standard solution .0.005 mol/L.
Beneficial effect: analysis process of the present invention is short, simple to operate, has good precision, vanadium in energy rapid and accurate determination V-Ti-Fe concentrate fines.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
Embodiment
A kind of method of vanadium in rapid and accurate determination V-Ti-Fe concentrate fines, take 0.5 gram, sample and be placed in 250 milliliters of triangular flasks, so that little water is wetting, sample is scattered, add 20 milliliters of mixture of sulfuric phosphoric acid, heating for dissolving is to emitting dense white cigarette, take off slightly cold, add water approximately 100 milliliters, being heated to salt dissolves, take off cooling duct room temperature, add 5 milliliters of copperas solutions (1%), place 2 minutes (now temperature should be spent approximately 30), dripping liquor potassic permanganate (1%) to solution is stable redness and keeps 5 minutes, add (10%) 10 milliliter, urea, dripping sodium nitrite solution (1%) disappears to red, after amount, 1-2 drips, place 3 minutes, add benzene for (0.2%) 5 of ortho-aminobenzoic acid indicator, under constantly shaking, being titrated to solution with iron ammonium sulfate standard solution, to become yellow green from redness be terminal, with the content of close standard model conversion sample.
Claims (2)
1. the method for vanadium in a rapid and accurate determination V-Ti-Fe concentrate fines, it is characterized in that: comprise the following steps: sample sulphur phosphorus acid mixture (1+2) dissolves, first use copperas solution (1%) by vanadium, chromium and other Reduction of Oxides, then use liquor potassic permanganate (1%) that tetravalence vanadium is oxidized to pentavalent, excessive potassium permanganate reduces with sodium nitrite solution (1%) under urea liquid (10%) exists, taking benzene for adjacent yl benzoic acid (1%) as indicator, with the titration of iron ammonium sulfate standard solution, being become yellow green to solution from redness is terminal, with the content of close standard model conversion sample, measure whereby vanadium amount.
2. the method for vanadium in a kind of rapid and accurate determination V-Ti-Fe concentrate fines according to claim 1, it is characterized in that agents useful for same: 1, sulphur phosphorus acid mixture (1+2), 2, copperas solution (1%), 3, liquor potassic permanganate (1%), 4, urea liquid (10%) preparation on the same day, 5, sodium nitrite solution (1%), 6, benzene is for ortho-aminobenzoic acid indicator (0.2%): claim 0.2 gram of indicator to be dissolved in 100 milliliters of sodium carbonate (0.2%), and 7, iron ammonium sulfate standard solution .0.005 mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509882.5A CN103837532A (en) | 2012-11-21 | 2012-11-21 | Method for rapidly accurately measuring vanadium in vanadium-titanium iron powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210509882.5A CN103837532A (en) | 2012-11-21 | 2012-11-21 | Method for rapidly accurately measuring vanadium in vanadium-titanium iron powder |
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| CN103837532A true CN103837532A (en) | 2014-06-04 |
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| CN201210509882.5A Pending CN103837532A (en) | 2012-11-21 | 2012-11-21 | Method for rapidly accurately measuring vanadium in vanadium-titanium iron powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007227A (en) * | 2014-06-24 | 2014-08-27 | 武钢集团昆明钢铁股份有限公司 | Method for testing total iron content in vanadium slag |
| CN104267141A (en) * | 2014-08-29 | 2015-01-07 | 中国航空工业集团公司北京航空材料研究院 | Method for determining vanadium element in vanadium iron alloy |
| CN109655577A (en) * | 2018-12-25 | 2019-04-19 | 河钢股份有限公司承德分公司 | In sub-molten salt vanadium extracting process in sodium vanadate solution vanadium concentration detection method |
Citations (3)
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| CN101256150A (en) * | 2008-03-24 | 2008-09-03 | 莱芜钢铁股份有限公司 | Method for determining vanadium in vanadium nitrogen alloy |
| CN101614719A (en) * | 2009-07-30 | 2009-12-30 | 攀枝花新钢钒股份有限公司 | Potassium permanganate oxidation-ferrous ammonium sulfate titration content of vanadium |
| CN101666789A (en) * | 2009-10-14 | 2010-03-10 | 湘潭大学 | Method for quickly determining vanadium in coal mine containing scherbinaite |
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2012
- 2012-11-21 CN CN201210509882.5A patent/CN103837532A/en active Pending
Patent Citations (3)
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| CN101256150A (en) * | 2008-03-24 | 2008-09-03 | 莱芜钢铁股份有限公司 | Method for determining vanadium in vanadium nitrogen alloy |
| CN101614719A (en) * | 2009-07-30 | 2009-12-30 | 攀枝花新钢钒股份有限公司 | Potassium permanganate oxidation-ferrous ammonium sulfate titration content of vanadium |
| CN101666789A (en) * | 2009-10-14 | 2010-03-10 | 湘潭大学 | Method for quickly determining vanadium in coal mine containing scherbinaite |
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| 吕瑞云等: "硫酸亚铁铵滴定法快速测定铬铁中铬", 《理化检验(化学分册)》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007227A (en) * | 2014-06-24 | 2014-08-27 | 武钢集团昆明钢铁股份有限公司 | Method for testing total iron content in vanadium slag |
| CN104007227B (en) * | 2014-06-24 | 2016-06-01 | 武钢集团昆明钢铁股份有限公司 | The measuring method of all iron content in a kind of vanadium slag |
| CN104267141A (en) * | 2014-08-29 | 2015-01-07 | 中国航空工业集团公司北京航空材料研究院 | Method for determining vanadium element in vanadium iron alloy |
| CN109655577A (en) * | 2018-12-25 | 2019-04-19 | 河钢股份有限公司承德分公司 | In sub-molten salt vanadium extracting process in sodium vanadate solution vanadium concentration detection method |
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Application publication date: 20140604 |