GB594262A - Improved process for the treatment of magnesian materials - Google Patents
Improved process for the treatment of magnesian materialsInfo
- Publication number
- GB594262A GB594262A GB1512945A GB1512945A GB594262A GB 594262 A GB594262 A GB 594262A GB 1512945 A GB1512945 A GB 1512945A GB 1512945 A GB1512945 A GB 1512945A GB 594262 A GB594262 A GB 594262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tanks
- microns
- magnesium
- ore
- series
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 4
- 235000010216 calcium carbonate Nutrition 0.000 abstract 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 3
- 229910052749 magnesium Inorganic materials 0.000 abstract 3
- 239000001095 magnesium carbonate Substances 0.000 abstract 3
- 238000013019 agitation Methods 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 2
- 239000001569 carbon dioxide Substances 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 2
- 235000014380 magnesium carbonate Nutrition 0.000 abstract 2
- 235000011160 magnesium carbonates Nutrition 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 238000001354 calcination Methods 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000009291 froth flotation Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/24—Magnesium carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
A process for the continuous preparation of magnesium and calcium carbonates from ores such as dolomites, magnesium limestomes, predazzites, pencatites and impure magnesites, comprises passing an aqueous slurry of the calcined ore through a series of carbonation tanks in which the supply of carbon dioxide gas is controlled to maintain a series of descending pH values ranging from 12.5 to 8, the pH value in each zone being maintained substantially constant, and separating the magnesium and calcium carbonates found either by a method dependent on their differences in specific gravity, e.g., centrifugal separation, or by a method of froth flotation. The ore is calcined at, for example, 840 DEG or 885 DEG C., to leave part of the calcium carbonate undissociated, after pulverising and classifying to give a product with an average size of about 12 microns, is suspended in water in a ratio of 1 part partly calcined ore to at least 10 parts, e.g., 12 to 16 parts, water. This suspension is passed through a series of carbonation tanks, of which, e.g., the first three and last three are larger than the middle five and are provided with agitators to give gentle agitation and circulation in the larger and rapid agitation and passage in the smaller tank. The carbonating gas, of 20 to 40 per cent. carbon dioxide, may be derived from the ore calcination and may be scrubbed and compressed before being delivered to all tanks except the first through small elastic-walled orifices (see Groups VI and XII). The temperature should be kept between 20 DEG and 50 DEG C. to form nesquehonite, for example, between 25 DEG and 36 DEG C., and the temperatures of the second and third tanks are used to control the gas supply thereto. The supply to the remainder is controlled by the pH in the tanks, the pH values maintained thereby being, for example, 12.1, 9.8, 9.6, 9.1, 8.6, 8.3 and 8. The magnesium carbonate produced is composed of crystals about 100 microns in length and 8 to 12 microns in breadth, and the calcium carbonate of particles about 10 microns in diameter.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB594262A true GB594262A (en) | 1947-11-06 |
Family
ID=1731274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1512945A Expired GB594262A (en) | 1945-06-14 | Improved process for the treatment of magnesian materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB594262A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011054831A1 (en) | 2009-11-03 | 2011-05-12 | Omya Development Ag | Precipitated magnesium carbonate |
| US9061920B2 (en) | 2009-11-10 | 2015-06-23 | Omya International Ag | Precipitated magnesium carbonate |
| EP3517502A1 (en) | 2018-01-26 | 2019-07-31 | Omya International AG | Carrier material for the release of one or more active agent(s) in a home care formulation |
| EP3733154A1 (en) | 2019-05-03 | 2020-11-04 | Omya International AG | Magnesium ion-containing materials as white pigments in oral care compositions |
| EP3733785A1 (en) | 2019-05-03 | 2020-11-04 | Omya International AG | Surface-reacted magnesium carbonate as carrier material for the release of one or more active agent(s) in a home care formulation |
| EP3733786A1 (en) | 2019-05-03 | 2020-11-04 | Omya International AG | Surface-treated magnesium ion-containing materials as white pigments in oral care compositions |
| WO2020224957A1 (en) | 2019-05-03 | 2020-11-12 | Omya International Ag | Surface-treated magnesium or calcium ion-containing materials as white pigments in oral care compositions |
| EP3882315A1 (en) | 2020-03-20 | 2021-09-22 | Omya International AG | Surface-treated magnesium ion-containing materials as white pigments in oral care compositions |
| EP4140953A1 (en) | 2021-08-30 | 2023-03-01 | Omya International AG | Method for the production of granules comprising a magnesium ion-comprising material |
| US11634337B2 (en) | 2020-08-13 | 2023-04-25 | Moore Randall P | Chemical process for the manufacture of magnesium bicarbonate from impure reagent including magnesium hydroxide and calcium carbonate |
| WO2023242276A1 (en) | 2022-06-15 | 2023-12-21 | Omya International Ag | Storage stabilization agent for aqueous home care formulations |
-
1945
- 1945-06-14 GB GB1512945A patent/GB594262A/en not_active Expired
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011054831A1 (en) | 2009-11-03 | 2011-05-12 | Omya Development Ag | Precipitated magnesium carbonate |
| EP2322581A1 (en) | 2009-11-03 | 2011-05-18 | Omya Development AG | Precipitated magnesium carbonate |
| US8551428B2 (en) | 2009-11-03 | 2013-10-08 | Omya International Ag | Precipitated magnesium carbonate |
| EP3045504A1 (en) | 2009-11-03 | 2016-07-20 | Omya International AG | Precipitated magnesium carbonate |
| US9061920B2 (en) | 2009-11-10 | 2015-06-23 | Omya International Ag | Precipitated magnesium carbonate |
| EP3517502A1 (en) | 2018-01-26 | 2019-07-31 | Omya International AG | Carrier material for the release of one or more active agent(s) in a home care formulation |
| WO2019145467A1 (en) | 2018-01-26 | 2019-08-01 | Omya International Ag | Carrier material for the release of one or more active agent(s) in a home care formulation |
| US12215301B2 (en) | 2018-01-26 | 2025-02-04 | Omya International Ag | Magnesium carbonate as a carrier for the release of active agents in a home care formulation |
| EP3733785A1 (en) | 2019-05-03 | 2020-11-04 | Omya International AG | Surface-reacted magnesium carbonate as carrier material for the release of one or more active agent(s) in a home care formulation |
| EP3733786A1 (en) | 2019-05-03 | 2020-11-04 | Omya International AG | Surface-treated magnesium ion-containing materials as white pigments in oral care compositions |
| WO2020225064A1 (en) | 2019-05-03 | 2020-11-12 | Omya International Ag | Magnesium ion-containing materials as white pigments in oral care compositions |
| WO2020225118A1 (en) | 2019-05-03 | 2020-11-12 | Omya International Ag | Surface-reacted magnesium carbonate as carrier material for the release of one or more active agent(s) in a home care formulation |
| WO2020224957A1 (en) | 2019-05-03 | 2020-11-12 | Omya International Ag | Surface-treated magnesium or calcium ion-containing materials as white pigments in oral care compositions |
| EP3733154A1 (en) | 2019-05-03 | 2020-11-04 | Omya International AG | Magnesium ion-containing materials as white pigments in oral care compositions |
| EP3882315A1 (en) | 2020-03-20 | 2021-09-22 | Omya International AG | Surface-treated magnesium ion-containing materials as white pigments in oral care compositions |
| US11634337B2 (en) | 2020-08-13 | 2023-04-25 | Moore Randall P | Chemical process for the manufacture of magnesium bicarbonate from impure reagent including magnesium hydroxide and calcium carbonate |
| EP4140953A1 (en) | 2021-08-30 | 2023-03-01 | Omya International AG | Method for the production of granules comprising a magnesium ion-comprising material |
| WO2023031230A1 (en) | 2021-08-30 | 2023-03-09 | Omya International Ag | Method for the production of granules comprising a magnesium ion-comprising material |
| WO2023242276A1 (en) | 2022-06-15 | 2023-12-21 | Omya International Ag | Storage stabilization agent for aqueous home care formulations |
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