SU1176240A1 - Method of determining iron hydroxides - Google Patents
Method of determining iron hydroxides Download PDFInfo
- Publication number
- SU1176240A1 SU1176240A1 SU843703810A SU3703810A SU1176240A1 SU 1176240 A1 SU1176240 A1 SU 1176240A1 SU 843703810 A SU843703810 A SU 843703810A SU 3703810 A SU3703810 A SU 3703810A SU 1176240 A1 SU1176240 A1 SU 1176240A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- iron
- solution
- hematite
- magnetite
- solvent
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical class [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 title claims description 4
- 235000014413 iron hydroxide Nutrition 0.000 title description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052595 hematite Inorganic materials 0.000 claims abstract description 6
- 239000011019 hematite Substances 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000706 filtrate Substances 0.000 claims abstract description 3
- 239000002904 solvent Substances 0.000 claims abstract 4
- 238000001354 calcination Methods 0.000 claims abstract 2
- 238000001914 filtration Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims abstract 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 7
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims description 5
- 150000001261 hydroxy acids Chemical class 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 4
- 150000004679 hydroxides Chemical class 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Compounds Of Iron (AREA)
Abstract
СПОСОБ ОПРЕСЩЛЕНИЯ ЖЕЛЕЗА ГИДРОКСВДОВ в присутствии гематита. включающий прокаливание анализируемого материала, растворение его селективным растворителем, фильтрование раствора и последующую количественную регистрацию железа в фильтрате одним из известных методов, отличающийс тем, что, с целью повьшени точности и селективности определени в присутствии Mai- нетита, в качестве растворител используют 4-5%-ный раствор гидрокcилa инa , подкисленного серной кислотой до концентрации 0,370 ,46 моль/л при 90-100°С в течение 20-30 мин.METHOD OF DISSEMINATION OF THE IRON OF HYDROXIA in the presence of hematite. including calcining the material being analyzed, dissolving it with a selective solvent, filtering the solution and subsequent quantitative recording of iron in the filtrate by one of the known methods, characterized in that 4-5% is used as a solvent to increase the accuracy and selectivity of the determination in the presence of Mai-netite a solution of hydroxy acid, acidified with sulfuric acid to a concentration of 0.370, 46 mol / l at 90-100 ° C for 20-30 minutes.
Description
О) 1C 4O) 1C 4
1 1eleven
Изобретение относитс к аналитической химии и может быть использовано дл железа гидроксидов в окисленных железных рудах и продуктах их обогащени , содержащих магнетит.This invention relates to analytical chemistry and can be used for iron hydroxides in oxidized iron ores and enrichment products containing magnetite.
Целью изобретени вл етс повышение точности и селективности определени .The aim of the invention is to improve the accuracy and selectivity of the determination.
Пример 1.0,25 г смеси гид роксилов железа,гематита и магнетита / измельченной до 0,1 мм, помещают в фарфоровый тигель и прокаливают при в течение 2ч.Example 1.0.25 g of a mixture of iron, hematite and magnetite hydroxyls / crushed to 0.1 mm is placed in a porcelain crucible and calcined for 2 hours.
Затем прокаленную навеску перенос т в стакан емкостью 150 см, приливают 50 см 4%-ного раствора гидроксиламина, подкисленного серной кислотой (0,46 моль/л), став т в термостат и раствор ют в течение 30 мин при . Скорость перемешивани 500 об/мин.Then, the calcined sample was transferred into a 150 cm beaker, 50 cm of 4% hydroxylamine solution acidified with sulfuric acid (0.46 mol / l) was poured, placed in a thermostat and dissolved for 30 minutes at. Stirring speed is 500 rpm.
Раствор фильтруют в стакан емкостью 400 см. Осадок и фильтрат промывают 6 раз водой. Раствор вьтаривают до влажных солей., затем приливают концентрированную азотную кислоту 15 см дл разложени гидроксиламина и выпаривают досуха. Сухой остаток дважды обрабатывают сол ной кислотой дл удалени азотной кислоты и определ ют железо бихроматным методом.The solution is filtered into a 400 cm beaker. The precipitate and the filtrate is washed 6 times with water. The solution is added to wet salts., Then 15 cm concentrated nitric acid is poured to decompose hydroxylamine and evaporated to dryness. The dry residue is twice treated with hydrochloric acid to remove nitric acid and the iron is determined by the bichromate method.
В исходной смеси содержитс 58,2% гематита; 0,3% магнетита; 8,8% гидроокислов .The initial mixture contains 58.2% hematite; 0.3% magnetite; 8.8% hydroxide.
6240262402
Определено предлагаемым способом 8,8% гидроокислов (ошибка 0,0), известным способом 9,0% гидроокислов (ошибка 0,2%).Determined by the proposed method, 8.8% of hydroxides (error 0.0), in a known manner, 9.0% of hydroxides (error 0.2%).
5 Пример 2.О,25 г окисленной руды Кривого Рога прокаливают. К прокаленному образцу добавл ют 50 см 5%-ного раствора гидроксиламина , подкисленного серной кислотой (до концентрации 0,37 моль/л) и раствор ют при 20 мин.5 Example 2.O, 25 g of Krivoy Rog oxidized ore is calcined. To the calcined sample, 50 cm of a 5% aqueous solution of hydroxylamine acidified with sulfuric acid (to a concentration of 0.37 mol / l) are added and dissolved at 20 minutes.
Содержание гидроокислов железа в руде, определенное расчетным способом на основании химических и тер5 мических анализов, составл ет 5,4%; гематита 13,8%, магнетита 10,0%. Определено 4,9% гид оокислов (ошибка 0,5%); известным способом 8,5% (ошибка 3,1%).The iron hydroxide content in the ore, determined by calculation based on chemical and thermal analyzes, is 5.4%; hematite 13.8%, magnetite 10.0%. 4.9% guide of oxides was determined (0.5% error); in a known manner of 8.5% (error 3.1%).
Пример 3. К О,25 г прокаленого магнетита добавл ют 50 см 4-5%-ного раствора гидроксиламина, подкисленного серной кислотой (до концентрации 0,42 моль/л), и раствор ют при 95°С 25 мин.Example 3. To O, 25 g of calcined magnetite, 50 cm of a 4-5% hydroxylamine solution acidified with sulfuric acid (to a concentration of 0.42 mol / l) are added and dissolved at 95 ° C for 25 minutes.
Далее ведут анализ, как в примере 1 .Next are analyzing, as in example 1.
В образце содержитс 0,9% гематита , 70,8% магнетита, 0,0% гидроокислов .The sample contains 0.9% hematite, 70.8% magnetite, 0.0% hydroxide.
Определено 4,0% гидроокислов (о 1шбка 4,0%), известным способом 29,4% (ошибка 29,4%).4.0% of hydroxides was determined (about 1% by 4.0%), by a known method of 29.4% (an error of 29.4%).
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU843703810A SU1176240A1 (en) | 1984-01-04 | 1984-01-04 | Method of determining iron hydroxides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU843703810A SU1176240A1 (en) | 1984-01-04 | 1984-01-04 | Method of determining iron hydroxides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1176240A1 true SU1176240A1 (en) | 1985-08-30 |
Family
ID=21104704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU843703810A SU1176240A1 (en) | 1984-01-04 | 1984-01-04 | Method of determining iron hydroxides |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1176240A1 (en) |
-
1984
- 1984-01-04 SU SU843703810A patent/SU1176240A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Пинчук И.Х., Морчовский Ю.В. Фазовый химический анализ руд и минералов. М.: Металлурги , 1969, с. 100-108. Авторское свидетельство СССР № 943203, кл. С 02 G 49/00, 1980. * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU1176240A1 (en) | Method of determining iron hydroxides | |
| Littlejohn et al. | Determination of nitrogen-sulfur compounds by ion chromatography | |
| Walker Jr et al. | Rapid method for determination of betaine | |
| SU943203A1 (en) | Method for detecting iron of hydroxides | |
| SU1401372A1 (en) | Method of determining thallium | |
| RU2021593C1 (en) | Process for determining phenol and 2,4,6-trichlorophenol in aqueous media | |
| RU2022254C1 (en) | Method of determination of neptunium in objects of environment | |
| SU1397523A1 (en) | Method of extracting copper from copper-containing materials | |
| SU415574A1 (en) | ||
| Sekine | Separation and spectrophotometric determination of uranium (VI) by extraction with arsenazo III and zephiramine | |
| Stresko et al. | Determination of antimony in geological materials by atomic absorption spectrometry | |
| SU1286993A1 (en) | Method of determining gallium | |
| SU369487A1 (en) | ALL-UNION JUT? P.v "-u?: RT / ia ^ M. Cl. G Gin 31/00 C 01 g 49/00 | |
| SU861312A1 (en) | Method of determining zinc oxide | |
| SU856996A1 (en) | Method of concentrating platinum metals | |
| SU1633356A1 (en) | Method of determination of psylomelan | |
| SU1456849A1 (en) | Method of analyzing salicylic acid and methyl salicylate in aqueous solutions | |
| RU2041459C1 (en) | Method of determination of diamonds in natural graphite-carrying ores and in their flotation concentrates | |
| SU437011A1 (en) | The method of determining chalcocite and bornite in ores and enrichment products | |
| SU1606903A1 (en) | Method of determining heavy metals | |
| SU1518794A1 (en) | Method of quantitative determination of acetic and salts thereof | |
| SU1273791A1 (en) | Method of determining wustite in materials of metallurgical production | |
| SU1399668A1 (en) | Method of phases analysis of zinc compounds in metallurgical products | |
| RU2007387C1 (en) | 6-[n-(2-hydroxyhexadecyl) -n-acetyl] -aminohexanoic acid or its salt as a flotation agent for phosphate ores | |
| SU1006368A1 (en) | Method for detecting chlorine in cement materials |