FIELD: chemistry.
SUBSTANCE: invention relates to the field of low-tonnage chemistry, to the production of inorganic substances, in particular to methods of producing magnesium chloride of hexavalent. Method involves purification of natural raw material - bischofite by means of fractional precipitation of impurities, transfer of magnesium cations to sediment in form of basic magnesium carbonate, washing of sediment from extraneous ions, dissolving basic magnesium carbonate in hydrochloric acid, evaporation of solution and crystallisation of end product with subsequent separation from mother solution and drying.
EFFECT: high-technology, low-waste method of producing magnesium chloride from hexahedral natural material, which enables to obtain an end product of a given degree of purity.
1 cl, 1 dwg, 2 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR COMPLEX TREATMENT OF CALCIUM CHLORIDE AND MAGNESIUM CHLORIDE TYPE BRINES (VERSIONS) | 2009 |
|
RU2436732C2 |
| METHOD FOR CLEANING BISCHOFITE FROM IRON COMPOUNDS | 2020 |
|
RU2748371C1 |
| METHOD OF PRODUCING ARTIFICIAL COMMERCIAL-GRADE BISCHOFITE | 2009 |
|
RU2436733C2 |
| METHOD OF SULPHATE-ION ABSORPTION IN METAL CHLORIDE AQUEOUS SOLUTIONS | 2006 |
|
RU2334678C2 |
| METHOD FOR PRODUCING MAGNESIUM OXIDE FROM BISCHOFITE | 1994 |
|
RU2097326C1 |
| METHOD OF COMPLEX PURIFICATION OF AQUEOUS SOLUTIONS OF METAL CHLORIDES FROM IRON AND SULPHATE ION IMPURITIES | 2008 |
|
RU2373140C1 |
| METHOD FOR EXTINGUISHING AND/OR PREVENTING FIRE, INCLUDING IGNITION OF LITHIUM-ION BATTERIES | 2022 |
|
RU2784095C1 |
| COMPOSITION FOR OBTAINING FIRE-EXTINGUISHING FIRE-RETARDANT GEL (OPTIONS) | 2022 |
|
RU2784106C1 |
| METHOD OF EMULSION RUBBER RECOVERY FROM LATEX | 2008 |
|
RU2351610C1 |
| METHOD OF PRODUCING NITRATE-FREE LIQUID COMPOUND FERTILISER FROM AMMONIUM NITRATE (VERSIONS) | 2011 |
|
RU2478086C1 |
