CN104181118B - A kind of method of phosphorus content in measure chromite - Google Patents
A kind of method of phosphorus content in measure chromite Download PDFInfo
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Abstract
The present invention is a kind of method of phosphorus content in measure chromite, of the invention with sodium peroxide high temperature alkali fuse decomposition ferrochrome ore sample, extracts the elements such as fused mass, phosphorus and ferrum, magnesium, manganese with hot water and is co-precipitated, and chromium is then with CrO4 2‑Ionic speciess enter solution, washed with sodium hydroxide solution except chromium.Precipitation hydrochloric acidolysiss, move in volumetric flask.Divide and take test solution, make the pH value that indicator adjusts solution with paranitrophenol, in hydrochloric acid medium, with ascorbic acid as reducing agent, phosphato-molybdic heteropolyacid is reduced to into P-Mo blue, the light absorption value of test solution is measured at spectrophotometer 680nm.The inventive method Technical Design is reasonable, relative standard deviation ＜ 12%, and up to 96 99%, compared with standard sample reference value, analytical data coincide recovery of standard addition substantially, and as a result stable, accurate, method is easy, quick, workable.
Description
Technical field
The present invention relates to a kind of content assaying method, more particularly to a kind of method for determining phosphorus content in chromite.
Background technology
In chromite, the content of phosphorus is not high, is one of harmful element.Low phosphorus yield typically using P-Mo blue photometric method and
Phosphorus molybdenum Huang photometry, but the Huang photometry sensitivity of phosphorus molybdenum is not as good as P-Mo blue photometric method, therefore conventional P-Mo blue photometric method.
At present, determine in the method for phosphorus content in conventional chromite, sample typically uses high chlorine after high chloro acid dissolution or alkali fusion
Acidifying, is oxidized to high price chromium at high temperature, and multiple addition hydrochloric acid is steamed to closely dry makes chromium form chromium dioxychloride. volatilization removing；Add water
Dissolved salts, in acid medium, makees reducing agent with oxammonium hydrochloride. or Hydrazinium sulfate, phosphato-molybdic heteropolyacid is reduced to P-Mo blue, so
After developed the color, absorb.The method early stage processes not only long flow path, and wastes reagent.
The content of the invention
The technical problem to be solved is to overcome the deficiencies in the prior art, there is provided a kind of easy, quick, accurate
The true assay method for determining phosphorus content in chrome ore.
The technical problem to be solved is realizing by following technical scheme.The present invention is a kind of ferrochrome
In ore deposit, the content assaying method of phosphorus, is characterized in, its step is as follows：
(1) 0.2-0.5g ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in corundum crucible, add 1.8-2.2g mistakes
Sodium oxide is mixed, then covers 0.4-0.6g sodium peroxides, is placed in 700-750 DEG C of Muffle furnace, keeps 3-5min；
(2) take out, be placed in after cooling in beaker, add the 70-80 DEG C of hot water of 80-120mL to extract fused mass, wash out earthenware
Crucible, is filtered with Medium speed filter paper, and precipitation is washed with sodium hydroxide solution several times；The mass concentration of sodium hydroxide is 18-22g/L；
(3) precipitation moves into capacity with 10mL70-80 DEG C of hot hydrochloric acid solution acidifying with 70-80 DEG C of hot wash 2-3 times
Bottle；In hydrochloric acid solution, hydrochloric acid and the volume ratio of water are 1：0.8-1.5;
(4) dividing and 5-20mL test solutions being taken in volumetric flask, benefit adds water to 20-30mL, plus 2d paranitrophenol indicators, uses hydrogen-oxygen
The pH value for changing sodium solution and hydrochloric acid solution regulation solution is 5.5-6.5；
(5) 5-7mL hydrochloric acid solutions are added, and 3-5mL ammonium molybdate solutions, 1.5-2.5mL ascorbic acid solutions are rushed with suitable quantity of water
Capacity bottleneck is washed, 2-3min in being put into boiling water bath, is heated, is taken out, cooling is released to 40-120mL with water；
(6) the light absorption value of phosphorus in chromite test solution is determined with spectrophotometer at 680nm, chromite is then calculated
The content of middle phosphorus.
In a kind of chromite of the present invention in the content assaying method technical scheme of phosphorus, its preferred method is：
(1) 0.2-0.5g ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in 30mL corundum crucibles, add 2g peroxides
Change sodium to mix, then cover 0.5g sodium peroxides, be placed in 720-730 DEG C of Muffle furnace, keep 4min；
(2) take out, be placed in after cooling in 250mL beakers, add 75 DEG C of hot water of 100mL to extract fused mass, wash out crucible,
Filtered with Medium speed filter paper, precipitation is washed with sodium hydroxide solution several times；The mass concentration of sodium hydroxide is 20g/L；
(3) precipitation 75 DEG C of hot hydrochloric acid solution acidifyings of 10m L, with hot wash 3 times, move into 50mL volumetric flasks；It is described
Hydrochloric acid be AR levels, volume ratio is 1+1;
(4) dividing and 10mL test solutions being taken in 50mL volumetric flasks, benefit adds water to 25mL, plus 2d paranitrophenol indicators, uses hydrogen-oxygen
The pH value for changing sodium solution and hydrochloric acid solution regulation solution is 6；
(5) 6mL hydrochloric acid solutions, 4mL ammonium molybdate solutions, 2mL ascorbic acid solutions, with suitable quantity of water flush volume bottle are added
Neck, heats 3min in being put into boiling water bath, take out, and cooling is released to scale with water；
(6) the light absorption value of phosphorus in chromite test solution is determined with spectrophotometer at 680nm, is then calculated in sample
The content of phosphorus.
In a kind of chromite of the present invention in the content assaying method technical scheme of phosphorus：Step（1）Described in mistake
Sodium oxide is preferably AR level steps（2）Described in sodium hydroxide be preferably AR levels, preferably wash precipitation with sodium hydroxide washing liquid
It is colourless to filtrate.Step（4）Described in paranitrophenol indicator mass concentration be preferably 2g/L；Sodium hydroxide solution and salt
In acid solution：Sodium hydroxide and hydrochloric acid are both preferably AR levels, and sodium hydroxide solution mass concentration is preferably 200g/L, hydrochloric acid solution
Volume ratio is preferably 1+6.Step（5）Described in hydrochloric acid solution in：Hydrochloric acid is preferably AR levels, and volume ratio is preferably 1+2；Molybdic acid
In ammonium salt solution：Ammonium molybdate is preferably AR levels, and mass concentration is preferably 20g/L；In ascorbic acid solution：Ascorbic acid is preferably AR
Level, mass concentration are preferably 20g/L.
Compared with prior art, the inventive method Technical Design is reasonable, relative standard deviation ＜ 12%, mark-on reclaims
Rate reaches 96-99%, and compared with standard sample reference value, analytical data coincide substantially, as a result stable, accurate, and method is easy, fast
It is fast, workable.
Specific embodiment
By the following examples technical solution of the present invention is further described, so that skilled in the art realises that originally
Invent, but rights protection of the present invention is not restricted by the embodiments.In embodiment, all percentage compositions are unless otherwise specified equal
Refer to mass percent.
Embodiment 1, the content assaying method of phosphorus in a kind of chromite, its step are as follows：
(1) 0.2g ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in corundum crucible, add 1.8g sodium peroxides to mix
It is even, then 0.4g sodium peroxides are covered, it is placed in 700 DEG C of Muffle furnaces, keeps 3min；
(2) take out, be placed in after cooling in beaker, add 70 DEG C of hot water of 80mL to extract fused mass, wash out crucible, use middling speed
Filter paper is filtered, and precipitation is washed with sodium hydroxide solution several times；The mass concentration of sodium hydroxide is 18g/L；
(3) precipitation moves into volumetric flask with 10mL70 DEG C of hot hydrochloric acid solution acidifying with 70 DEG C of hot washes 2 times；Hydrochloric acid solution
Middle hydrochloric acid is 1 with the volume ratio of water：0.8;
(4) dividing and 5mL test solutions being taken in volumetric flask, benefit adds water to 20mL, plus 2d paranitrophenol indicators, molten with sodium hydroxide
It is 5.5 that liquid and hydrochloric acid solution adjust the pH value of solution；
(5) 5mL hydrochloric acid solutions, 3mL ammonium molybdate solutions, 1.5mL ascorbic acid solutions, with suitable quantity of water flush volume bottle are added
Neck, heats 2min in being put into boiling water bath, take out, and cooling is released to 40mL with water；
(6) the light absorption value of phosphorus in chromite test solution is determined with spectrophotometer at 680nm, chromite is then calculated
The content of middle phosphorus.
Embodiment 2, the content assaying method of phosphorus in a kind of chromite, its step are as follows：
(1) 0.5g ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in corundum crucible, add 2.2g sodium peroxides to mix
It is even, then 0.6g sodium peroxides are covered, it is placed in 750 DEG C of Muffle furnaces, keeps 5min；
(2) take out, be placed in after cooling in beaker, add 80 DEG C of hot water of 120mL to extract fused mass, wash out crucible, with
Fast filter paper is filtered, and precipitation is washed with sodium hydroxide solution several times；The mass concentration of sodium hydroxide is 22g/L；
(3) precipitation moves into volumetric flask with 10mL80 DEG C of hot hydrochloric acid solution acidifying with 80 DEG C of hot washes 3 times；Hydrochloric acid solution
Middle hydrochloric acid is 1 with the volume ratio of water： 1.5;
(4) dividing and 20mL test solutions being taken in volumetric flask, benefit adds water to 30mL, plus 2d paranitrophenol indicators, uses sodium hydroxide
It is 6.5 that solution and hydrochloric acid solution adjust the pH value of solution；
(5) 7mL hydrochloric acid solutions are added, and 3-5mL ammonium molybdate solutions, 2.5mL ascorbic acid solutions use suitable quantity of water flush volume
Bottleneck, heats 3min in being put into boiling water bath, take out, and cooling is released to 120mL with water；
(6) the light absorption value of phosphorus in chromite test solution is determined with spectrophotometer at 680nm, chromite is then calculated
The content of middle phosphorus.
Embodiment 3, the content assaying method of phosphorus in a kind of chromite, its step are as follows：
(1) 0.2-0.5g ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in 30mL corundum crucibles, add 2g peroxides
Change sodium to mix, then cover 0.5g sodium peroxides, be placed in 720-730 DEG C of Muffle furnace, keep 4min；
(2) take out, be placed in after cooling in 250mL beakers, add 75 DEG C of hot water of 100mL to extract fused mass, wash out crucible,
Filtered with Medium speed filter paper, precipitation is washed with sodium hydroxide solution several times；The mass concentration of sodium hydroxide is 20g/L；
(3) precipitation 75 DEG C of hot hydrochloric acid solution acidifyings of 10m L, with hot wash 3 times, move into 50mL volumetric flasks；It is described
Hydrochloric acid be AR levels, volume ratio is 1+1;
(4) dividing and 10mL test solutions being taken in 50mL volumetric flasks, benefit adds water to 25mL, plus 2d paranitrophenol indicators, uses hydrogen-oxygen
The pH value for changing sodium solution and hydrochloric acid solution regulation solution is 6；
(5) 6mL hydrochloric acid solutions, 4mL ammonium molybdate solutions, 2mL ascorbic acid solutions, with suitable quantity of water flush volume bottle are added
Neck, heats 3min in being put into boiling water bath, take out, and cooling is released to scale with water；
(6) the light absorption value of phosphorus in chromite test solution is determined with spectrophotometer at 680nm, is then calculated in sample
The content of phosphorus.
Embodiment 4, in a kind of chromite described in embodiment 1 or 2 in the content assaying method of phosphorus：Step（1）Described in
Sodium peroxide be AR levels.Suddenly（2）Described in sodium hydroxide be AR levels；It is nothing to be washed with sodium hydroxide washing liquid and be precipitated to filtrate
Color.Step（4）Described in paranitrophenol indicator mass concentration be 2g/L；In sodium hydroxide solution and hydrochloric acid solution：Hydrogen-oxygen
Change sodium and hydrochloric acid is AR levels, sodium hydroxide solution mass concentration is 200g/L, and hydrochloric acid solution volume ratio is 1+6.Step（5）In
In described hydrochloric acid solution：Hydrochloric acid is AR levels, and volume ratio is 1+2；In ammonium molybdate solution：Ammonium molybdate is AR levels, and mass concentration is
20g/L；In ascorbic acid solution：Ascorbic acid is AR levels, and mass concentration is 20g/L.
Embodiment 5, the content assaying method experiment one of phosphorus in a kind of chromite, its step is as follows：
1. main agents are prepared first：
(1) sodium peroxide；
(2) sodium hydroxide solution：20g/L；
(3) hydrochloric acid solution：1+1；
(4) hydrochloric acid solution：1+6；
(5) sodium hydroxide solution：200g/L；
(6) hydrochloric acid solution：1+2；
(7) ammonium molybdate solution：20g/L；
(8) ascorbic acid solution 20g/L；
(9) paranitrophenol indicator solution：2g/L；
(10) phosphorus standard solution：10µg/mL.
2. next to that being tested：
0.3g or so ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in 30mL corundum crucibles, add 2g peroxidating
Sodium is mixed, then covers 0.5g sodium peroxides, is placed in 700 DEG C of Muffle furnaces, keeps 3min；Take out, after cooling, be placed in 250mL burnings
In cup, add 100mL hot water to extract fused mass, wash out crucible, filtered with Medium speed filter paper, washed with 20g/L sodium hydroxide solutions
To filtrate without yellow；The precipitation hot hydrochloric acid solution acidifyings of 10mL, with hot wash 3 times, move into 100mL volumetric flasks；Divide and take 20mL
In 50mL volumetric flasks, benefit adds water to 25mL, plus 2d paranitrophenol indicators to solution, is adjusted with sodium hydroxide solution and hydrochloric acid solution
The pH value of section solution is 6 or so；6mL hydrochloric acid solutions, 4mL ammonium molybdate solutions, 2mL ascorbic acid solutions is added to be rushed with a small amount of water
Capacity bottleneck is washed, 2min in being put into boiling water bath, is heated, is taken out, cooling is released to scale with water；Pipette 0.00,1.00,2.00,
5.00th, 10.00mL phosphorus standard solution is respectively placed in one group of 50mL volumetric flask, and benefit adds water to 25mL, as follows sample test step
Suddenly；The light absorption value of phosphorus in test solution is determined at 680nm with spectrophotometer, the content of phosphorus in chromite sample is calculated.
Analysis result is shown in Table 1：As a result show, measurement result can meet requirement.
The measurement result of phosphorus content in 1 chromite of table
In order to test the accuracy of the method, we have done recovery testu to the sample, are shown in Table 2.
Phosphorus recovery testu in 2 chromite of table
Embodiment 6, the content assaying method experiment two of phosphorus in a kind of chromite, its step is as follows：
On the basis of the method for embodiment 5, experiment below is carried out：
0.5g or so ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in 30mL corundum crucibles, add 2g peroxidating
Sodium is mixed, then covers 0.5g sodium peroxides, is placed in 750 DEG C of Muffle furnaces, keeps 3min；Take out, after cooling, be placed in 250mL burnings
In cup, add 100mL hot water to extract fused mass, wash out crucible, filtered with Medium speed filter paper, washed with 20g/L sodium hydroxide solutions
To filtrate without yellow；The precipitation hot hydrochloric acid solution acidifyings of 10mL, with hot wash 3 times, move into 50mL volumetric flasks；It is molten point to take 20mL
In 50mL volumetric flasks, benefit adds water to 25mL, plus 2d paranitrophenol indicators to liquid, is adjusted with sodium hydroxide solution and hydrochloric acid solution
The pH value of solution is 6 or so；6mL hydrochloric acid (1+2) solution is added, 4mL ammonium molybdate solutions, 2mL ascorbic acid solutions use a small amount of water
Flush volume bottleneck, heats 2min in being put into boiling water bath, take out, and cooling is released to scale with water；Measure 0.00,1.00,2.00,
5.00th, 10.00mL phosphorus standard solution is respectively placed in one group of 50mL volumetric flask, and benefit is added water to 25mL, as follows sample test
Step；The light absorption value of phosphorus in test solution is determined at 680nm with spectrophotometer, the content of phosphorus in chromite sample is calculated.
Analysis result is shown in Table 3：As a result show, measurement result can meet requirement.
The measurement result of phosphorus content in 3 chromite of table
As a result show, measurement result can meet requirement.
In above-described embodiment 5 and 6, in phosphorus content certain limit, change the sample weighting amount of sample, molten sample temperature, point take
The conditions such as the volume of test solution, the accuracy and precision of its sample can meet the requirement of the indoor analytical error of experiment, feasibility
Preferably.
Claims (6)
1. in a kind of chromite phosphorus content assaying method, it is characterised in that its step is as follows：
(1) 0.2-0.5g ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in corundum crucible, add 1.8-2.2g peroxidating
Sodium is mixed, then covers 0.4-0.6g sodium peroxides, is placed in 700-750 DEG C of Muffle furnace, keeps 3-5min；
(2) take out, be placed in after cooling in beaker, add the 70-80 DEG C of hot water of 80-120mL to extract fused mass, wash out crucible, with
Fast filter paper is filtered, and precipitation is washed with sodium hydroxide solution several times；The mass concentration of sodium hydroxide is 18-22g/L；
(3) precipitation moves into volumetric flask with 10mL70-80 DEG C of hot hydrochloric acid solution acidifying with 70-80 DEG C of hot wash 2-3 times；Hydrochloric acid
In solution, hydrochloric acid and the volume ratio of water are 1：0.8-1.5；
(4) dividing and 5-20mL test solutions being taken in volumetric flask, benefit adds water to 20-30mL, plus 2d paranitrophenol indicators, uses sodium hydroxide
It is 5.5-6.5 that solution and hydrochloric acid solution adjust the pH value of solution；
(5) add 5-7mL hydrochloric acid solutions, 3-5mL ammonium molybdate solutions, 1.5-2.5mL ascorbic acid solutions to be rinsed with suitable quantity of water and held
Throughput bottleneck, heats 2-3min in being put into boiling water bath, take out, and cooling is released to 40-120mL with water；
(6) the light absorption value of phosphorus in chromite test solution is determined with spectrophotometer at 680nm, phosphorus in chromite is then calculated
Content.
2. in a kind of chromite according to claim 1 phosphorus content assaying method, it is characterised in that its method is：
(1) 0.2-0.5g ferrochrome ore samples are weighed, 0.0001g is accurate to, is placed in 30mL corundum crucibles, add 2g sodium peroxides
Mix, then cover 0.5g sodium peroxides, be placed in 720-730 DEG C of Muffle furnace, keep 4min；
(2) take out, be placed in after cooling in 250mL beakers, add 75 DEG C of hot water of 100mL to extract fused mass, wash out crucible, with
Fast filter paper is filtered, and precipitation is washed with sodium hydroxide solution several times；The mass concentration of sodium hydroxide is 20g/L；
(3) precipitation 75 DEG C of hot hydrochloric acid solution acidifyings of 10mL, with hot wash 3 times, move into 50mL volumetric flasks；Described hydrochloric acid
For AR levels, volume ratio is 1+1；
(4) dividing and 10mL test solutions being taken in 50mL volumetric flasks, benefit adds water to 25mL, plus 2d paranitrophenol indicators, molten with sodium hydroxide
It is 6 that liquid and hydrochloric acid solution adjust the pH value of solution；
(5) 6mL hydrochloric acid solutions are added, and 4mL ammonium molybdate solutions, 2mL ascorbic acid solutions, with suitable quantity of water flush volume bottleneck, are put into
3min is heated in boiling water bath, is taken out, cooling is released to scale with water；
(6), with the light absorption value of spectrophotometer phosphorus in 680nm places measure chromite test solution, then phosphorus in sample is calculated
Content.
3. in a kind of chromite according to claim 1 and 2 phosphorus content assaying method, it is characterised in that：In step (1)
Described sodium peroxide is AR levels.
4. in a kind of chromite according to claim 1 and 2 phosphorus content assaying method, it is characterised in that：In step (2)
Described sodium hydroxide is AR levels；It is colourless to be washed with sodium hydroxide washing liquid and be precipitated to filtrate.
5. in a kind of chromite according to claim 1 and 2 phosphorus content assaying method, it is characterised in that：In step (4)
Described paranitrophenol indicator mass concentration is 2g/L；In sodium hydroxide solution and hydrochloric acid solution：Sodium hydroxide and hydrochloric acid are equal
For AR levels, sodium hydroxide solution mass concentration is 200g/L, and hydrochloric acid solution volume ratio is 1+6.
6. in a kind of chromite according to claim 1 and 2 phosphorus content assaying method, it is characterised in that in step (5)
In described hydrochloric acid solution：Hydrochloric acid is AR levels, and volume ratio is 1+2；In ammonium molybdate solution：Ammonium molybdate is AR levels, and mass concentration is
20g/L；In ascorbic acid solution：Ascorbic acid is AR levels, and mass concentration is 20g/L.
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| CN104807766B (en) * | 2015-05-12 | 2018-05-01 | 中蓝连海设计研究院有限公司 | The assay method of content of magnesium in a kind of chamotte sand |
| CN105067583B (en) * | 2015-08-05 | 2018-12-25 | 中华人民共和国连云港出入境检验检疫局 | The measuring method of lead content in a kind of chrome ore |
| CN105300975B (en) * | 2015-11-11 | 2018-04-24 | 武钢集团昆明钢铁股份有限公司 | The detection method of phosphorus content in a kind of vanadium slag |
| CN110398471B (en) * | 2019-08-31 | 2022-03-11 | 深圳市中金岭南有色金属股份有限公司 | Method for determining chloride ions in zinc concentrate |
| CN112730283A (en) * | 2020-12-17 | 2021-04-30 | 大冶有色设计研究院有限公司 | Method for measuring chromium content of copper concentrate |
| CN112946172A (en) * | 2021-01-25 | 2021-06-11 | 江阴兴澄特种钢铁有限公司 | Method for measuring content of phosphorus in ferrophosphorus |
| CN113670895A (en) * | 2021-08-20 | 2021-11-19 | 江苏扬农化工集团有限公司 | Method for improving element determination accuracy in heteropoly acid catalyst |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1880946A (en) * | 2005-06-14 | 2006-12-20 | 中国科学院金属研究所 | Analysis method for phosphor in high temperature alloy |
| CN1991339A (en) * | 2005-12-30 | 2007-07-04 | 中国石油化工股份有限公司 | Method for analyzing total phosphorus content in sample |
| CN102539426A (en) * | 2012-01-06 | 2012-07-04 | 吉林建龙钢铁有限责任公司 | Method for determining phosphorus in silicon-manganese alloy |
-
2014
- 2014-09-15 CN CN201410467789.1A patent/CN104181118B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1880946A (en) * | 2005-06-14 | 2006-12-20 | 中国科学院金属研究所 | Analysis method for phosphor in high temperature alloy |
| CN1991339A (en) * | 2005-12-30 | 2007-07-04 | 中国石油化工股份有限公司 | Method for analyzing total phosphorus content in sample |
| CN102539426A (en) * | 2012-01-06 | 2012-07-04 | 吉林建龙钢铁有限责任公司 | Method for determining phosphorus in silicon-manganese alloy |
Non-Patent Citations (1)
| Title |
|---|
| 磷钼蓝光度法测定地质样品中的磷;甘金莲，何巧玲，郭玉翠;《甘肃冶金》;20070630;第29卷(第3期);第47至48页 * |
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