RU2012111069A - METHOD FOR SELECTIVE LEACHING OF MAGNESIUM FROM MAGNESITHOLYTITE RAW MATERIAL - Google Patents
METHOD FOR SELECTIVE LEACHING OF MAGNESIUM FROM MAGNESITHOLYTITE RAW MATERIAL Download PDFInfo
- Publication number
- RU2012111069A RU2012111069A RU2012111069/02A RU2012111069A RU2012111069A RU 2012111069 A RU2012111069 A RU 2012111069A RU 2012111069/02 A RU2012111069/02 A RU 2012111069/02A RU 2012111069 A RU2012111069 A RU 2012111069A RU 2012111069 A RU2012111069 A RU 2012111069A
- Authority
- RU
- Russia
- Prior art keywords
- dolomite
- magnesium
- nitric acid
- leaching
- raw materials
- Prior art date
Links
- 238000002386 leaching Methods 0.000 title claims abstract 9
- 239000002994 raw material Substances 0.000 title claims abstract 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract 7
- 239000011777 magnesium Substances 0.000 title claims abstract 7
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract 5
- 238000000034 method Methods 0.000 title claims abstract 4
- 239000010459 dolomite Substances 0.000 claims abstract 10
- 229910000514 dolomite Inorganic materials 0.000 claims abstract 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract 8
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract 8
- 239000000243 solution Substances 0.000 claims abstract 7
- 238000001914 filtration Methods 0.000 claims abstract 6
- 239000002244 precipitate Substances 0.000 claims abstract 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract 4
- 239000002253 acid Substances 0.000 claims abstract 4
- 239000011575 calcium Substances 0.000 claims abstract 4
- 239000010440 gypsum Substances 0.000 claims abstract 4
- 229910052602 gypsum Inorganic materials 0.000 claims abstract 4
- 239000001095 magnesium carbonate Substances 0.000 claims abstract 4
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract 4
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract 4
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract 4
- 239000007864 aqueous solution Substances 0.000 claims abstract 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052791 calcium Inorganic materials 0.000 claims abstract 2
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract 2
- 239000001569 carbon dioxide Substances 0.000 claims abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract 2
- 230000001143 conditioned effect Effects 0.000 claims abstract 2
- 239000012634 fragment Substances 0.000 claims abstract 2
- QWDJLDTYWNBUKE-UHFFFAOYSA-L magnesium bicarbonate Chemical class [Mg+2].OC([O-])=O.OC([O-])=O QWDJLDTYWNBUKE-UHFFFAOYSA-L 0.000 claims abstract 2
- 239000002370 magnesium bicarbonate Substances 0.000 claims abstract 2
- 235000014824 magnesium bicarbonate Nutrition 0.000 claims abstract 2
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract 2
- 239000002245 particle Substances 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 abstract 1
Classifications
-
- 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
- Y02P10/20—Recycling
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Способ селективного выщелачивания магния из магнезитодоломитового сырья, включающий измельчение сырья, классификацию и последующее выщелачивание магния, например водным раствором азотной кислоты, отличающийся тем, что из магнезитодоломитового сырья выделяют класс с фрагментами равными и меньшими, чем критическая крупность частиц доломита (ккd), которая увеличивается, например, с 0,2 до 4,0 мм при повышении температуры выщелачивания от 15 до 20°С, растворяют доломит 10-50%-ным водным раствором азотной кислоты с изменением стехиометрического состава кислота:доломит от 1,1:1 до 1,3:1, выделяют фильтрованием осадок магнезита, пассивного в реакции с кислотой, добавляют в раствор, содержащий ионы магния и кальция, серную кислоту, осаждают кальций в виде гипса, получают азотную кислоту в результате реакции:Са(NO)+НSO+2НO→CaSO·2HO↓+2НNO, (1)извлекают плохо растворимый гипс фильтрованием, раствор продувают углекислым газом, получают осадок слабо растворимых гидрокарбонатов магния, отделяют осадок фильтрованием, полученный раствор азотной кислоты кондиционируют до требуемой концентрации и возвращают в начало процесса выщелачивания сырья.A method for selective leaching of magnesium from magnesite dolomite raw materials, including grinding the raw materials, classification and subsequent leaching of magnesium, for example, with an aqueous solution of nitric acid, characterized in that a class with fragments equal to and smaller than the critical size of dolomite particles (ccd) is isolated from magnesite dolomite raw materials, which increases , for example, from 0.2 to 4.0 mm with an increase in the leaching temperature from 15 to 20 ° C, dissolve dolomite with a 10-50% aqueous solution of nitric acid with a change in the stoichiometric composition of acid: dolomite from 1.1: 1 to 1 , 3: 1, a precipitate of magnesite is isolated by filtration, which is passive in reaction with an acid, sulfuric acid is added to a solution containing magnesium and calcium ions, calcium is precipitated in the form of gypsum, and nitric acid is obtained as a result of the reaction: Ca (NO) + HSO + 2HO → CaSO 2HO ↓ + 2НNO, (1) poorly soluble gypsum is removed by filtration, the solution is purged with carbon dioxide, a precipitate of poorly soluble magnesium bicarbonates is obtained, the precipitate is separated By filtration, the resulting nitric acid solution is conditioned to the required concentration and returned to the beginning of the leaching process.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012111069/02A RU2521543C2 (en) | 2012-03-22 | 2012-03-22 | Method of processing magnesite dolomite raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012111069/02A RU2521543C2 (en) | 2012-03-22 | 2012-03-22 | Method of processing magnesite dolomite raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2012111069A true RU2012111069A (en) | 2013-09-27 |
| RU2521543C2 RU2521543C2 (en) | 2014-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2012111069/02A RU2521543C2 (en) | 2012-03-22 | 2012-03-22 | Method of processing magnesite dolomite raw material |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2521543C2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2642577C1 (en) * | 2016-12-22 | 2018-01-25 | федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный университет" (ФГБОУ ВО "ВГУ") | Method of leaching wastes of enriched amorphous magnesite with solution of nitric acid |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7666250B1 (en) * | 2003-11-12 | 2010-02-23 | Ut-Battelle, Llc | Production of magnesium metal |
| RU2259320C1 (en) * | 2004-02-05 | 2005-08-27 | Открытое Акционерное Общество "Российский научно-исследовательский и проектный институт титана и магния" (ОАО "РИТМ") | Magnesium-containing ore processing method |
| US9139892B2 (en) * | 2010-08-27 | 2015-09-22 | Ecoengineers Pty Ltd. | Process for magnesium production |
-
2012
- 2012-03-22 RU RU2012111069/02A patent/RU2521543C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| RU2521543C2 (en) | 2014-06-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20150323 |