PL23151B1 - Method for producing magnesium oxide from dolomite. - Google Patents
Method for producing magnesium oxide from dolomite. Download PDFInfo
- Publication number
- PL23151B1 PL23151B1 PL23151A PL2315135A PL23151B1 PL 23151 B1 PL23151 B1 PL 23151B1 PL 23151 A PL23151 A PL 23151A PL 2315135 A PL2315135 A PL 2315135A PL 23151 B1 PL23151 B1 PL 23151B1
- Authority
- PL
- Poland
- Prior art keywords
- dolomite
- magnesium oxide
- magnesium
- producing magnesium
- hydroxide
- Prior art date
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- 229910000514 dolomite Inorganic materials 0.000 title claims description 5
- 239000010459 dolomite Substances 0.000 title claims description 5
- 239000000395 magnesium oxide Substances 0.000 title claims 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 title 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 159000000003 magnesium salts Chemical class 0.000 claims description 2
- 238000005272 metallurgy Methods 0.000 claims 1
- 238000005065 mining Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 2
- 235000000346 sugar Nutrition 0.000 description 2
- -1 MgCl 2 Chemical class 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
Description
W celu wydzielenia magnezu z dolomi¬ tu proponowano wyzyskiwanie róznicy rozpuszczalnosci w wodzie pewnych soli magnezowych i wapniowych, a wiec, na- przyklad, otrzymana z dolomitu mieszani¬ ne wodorotlenku wapniowego i wodorotlen¬ ku magnezowego zadawano roztworem cu¬ kru i rozdzielano cukrzany, otrzymane w ten sposób. Sposób ten jednak, ze wzgledu na nieznaczna róznice rozpuszczalnosci obu tych soli, wykazuje wydajnosc niedosta¬ teczna i wymaga ponadto regenerowania cukrzanu wapniowego.Sposób wydzielania magnezu wedlug wynalazku niniejszego polega na przepro¬ wadzeniu wodorotlenku wapnia, zawartego w mieszaninie powyzej wspomnianych wo¬ dorotlenków, w stan rozpuszczalny, dzieki czemu mozna go latwo oddzielic przez od¬ saczenie lub odwirowanie. W mysl wyna¬ lazku cel ten osiaga sie przez dodanie roz¬ puszczalnej w wodzie soli magnezowej, np.MgCl2, MgfNOJz i t. d., która dzieki re¬ akcji podwójnej wymiany przechodzi w nierozpuszczalny w wodzie wodorotlenek magnezowy, przeprowadzajac jednoczesnie wodorotlenek wapniowy w sól, rozpuszczal¬ na w wodzie.Odsaczony lub odwirowany wodorotle- tworzony wodorotlenek magnezowy oddzie- nek magnezu przeprowadza sie w tlenek w la sie w znany sposób i przeprowadza w sposóbznany. tlenek. PLIn order to separate the magnesium from dolomite, it has been proposed to recover the difference in water solubility of certain magnesium and calcium salts, so, for example, mixtures of calcium hydroxide and magnesium hydroxide obtained from dolomite were mixed with a sugar solution and the sugars were separated. in this way. This process, however, due to the slight difference in solubility of both these salts, shows insufficient efficiency and also requires the regeneration of calcium sucrose. The method of separating magnesium according to the present invention consists in carrying out calcium hydroxide contained in the mixture of the above-mentioned hydroxides, in soluble state, so it can be easily separated by drainage or centrifugation. In accordance with the invention, this object is achieved by adding a water-soluble magnesium salt, e.g. MgCl 2, MgfNO 3, etc., which, by a metathesis reaction, turns into water-insoluble magnesium hydroxide while simultaneously converting the calcium hydroxide into a salt, dissolving ¬ on in water. Drained or centrifuged hydroxide formed magnesium hydroxide is converted to oxide in a laundered manner in a known manner and converted as known. oxide. PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL23151B1 true PL23151B1 (en) | 1936-05-30 |
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