WO2010027247A1 - Proceso para la producción de hidroxido de magnesio de alta pureza - Google Patents
Proceso para la producción de hidroxido de magnesio de alta pureza Download PDFInfo
- Publication number
- WO2010027247A1 WO2010027247A1 PCT/MX2008/000117 MX2008000117W WO2010027247A1 WO 2010027247 A1 WO2010027247 A1 WO 2010027247A1 MX 2008000117 W MX2008000117 W MX 2008000117W WO 2010027247 A1 WO2010027247 A1 WO 2010027247A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnesium hydroxide
- high purity
- acid
- purity magnesium
- alkali
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 73
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 title claims abstract description 55
- 239000000347 magnesium hydroxide Substances 0.000 title claims abstract description 55
- 229910001862 magnesium hydroxide Inorganic materials 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title description 14
- 239000002253 acid Substances 0.000 claims abstract description 37
- 239000003513 alkali Substances 0.000 claims abstract description 32
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000011777 magnesium Substances 0.000 claims abstract description 20
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 16
- 230000008929 regeneration Effects 0.000 claims abstract description 15
- 238000011069 regeneration method Methods 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 9
- 239000012452 mother liquor Substances 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- 238000002386 leaching Methods 0.000 claims description 12
- 229910000514 dolomite Inorganic materials 0.000 claims description 11
- 239000010459 dolomite Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002244 precipitate Substances 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- -1 Dolomite Chemical compound 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims 2
- 238000005191 phase separation Methods 0.000 claims 2
- 238000002156 mixing Methods 0.000 claims 1
- 230000003134 recirculating effect Effects 0.000 claims 1
- 239000007790 solid phase Substances 0.000 claims 1
- 238000001556 precipitation Methods 0.000 abstract description 4
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 150000004679 hydroxides Chemical class 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 20
- 239000000047 product Substances 0.000 description 10
- 239000012535 impurity Substances 0.000 description 8
- 238000000746 purification Methods 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000000909 electrodialysis Methods 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000010835 comparative analysis Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 235000011167 hydrochloric acid Nutrition 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052599 brucite Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- CXUJOBCFZQGUGO-UHFFFAOYSA-F calcium trimagnesium tetracarbonate Chemical compound [Mg++].[Mg++].[Mg++].[Ca++].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O CXUJOBCFZQGUGO-UHFFFAOYSA-F 0.000 description 1
- HHSPVTKDOHQBKF-UHFFFAOYSA-J calcium;magnesium;dicarbonate Chemical compound [Mg+2].[Ca+2].[O-]C([O-])=O.[O-]C([O-])=O HHSPVTKDOHQBKF-UHFFFAOYSA-J 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229910000515 huntite Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 235000012245 magnesium oxide Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010951 particle size reduction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 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
- C01F5/14—Magnesium hydroxide
- C01F5/22—Magnesium hydroxide from magnesium compounds with alkali hydroxides or alkaline- earth oxides or hydroxides
Definitions
- the present invention relates to the production of magnesium hydroxide, and in particular relates to a process for obtaining high purity Mg (OH) 2 , from dolomites, by the action of an acid and an alkali, which are regenerated within an internal cycle of the same process.
- magnesium hydroxide For the production of magnesium hydroxide, precipitation processes are known for the addition to a solution containing Mg ++ , including seawater, of an alkali such as soda, potash, aquaponics or lime; In these processes the alkali is lost in the processes of washing and purification of magnesium hydroxide. Kirk-Othmer, Encyclopedia of Chemical Technology, Third Edition, VoI. 14, pp 629 to 631.
- a solid material is used as raw material, which when reacting produces impurities such as sulfate, carbonate, hydroxide or calcium oxide, all precipitable and entrained with the product , resulting in a low purity product.
- impurities such as sulfate, carbonate, hydroxide or calcium oxide
- the purity of the magnesium hydroxide produced depends directly on that of the raw materials used.
- the above processes do not guarantee a purity of magnesium hydroxide that allows it to be used in very demanding technical fields such as the manufacture of pharmaceutical and food products, starting from raw materials not necessarily of high purity, so operations are required of complex purification, such as the selective dissolution of undesirable insoluols.
- Another object of the present invention is to provide a process in which, in a stable state, the alkali and acid flows required for the production of magnesium hydroxide are produced by regeneration in the same process.
- Figure 1 is a block diagram representing the process flow of the present invention.
- the process for obtaining magnesium hydroxide of the present invention is characterized in that the raw material (100) is a solid material, whether it is a compound or a mixture, natural or synthetic, containing magnesium in the forms of carbonate, hydroxide or oxide, the preferred materials are such as Dolomite, Huntite, Brucite, Periclase, Dolima or Magnesite.
- the exposure to the reagents of the largest possible surface area of the material for example by increasing the area by subjecting the raw material to processes of particle size reduction, thereby ensuring the greatest extraction of magnesium.
- the raw material (100) is fed to a leaching operation (200) with acid, which is selected from the group comprising sulfuric and hydrochloric acids such that the magnesium ion of the raw material remains in solution and a precipitated with the other cations present in the raw material, thus, if the raw material contains calcium, sulfuric acid that produces gypsum (calcium sulfate dihydrate) that precipitates should be used.
- acid which is selected from the group comprising sulfuric and hydrochloric acids such that the magnesium ion of the raw material remains in solution and a precipitated with the other cations present in the raw material, thus, if the raw material contains calcium, sulfuric acid that produces gypsum (calcium sulfate dihydrate) that precipitates should be used.
- the insoluble ones that are produced during the reaction of the raw material with the acid are used so that in their route by the effect of precipitation, they drag impurities such as heavy metals, organic matter and suspended solids, while the magnesium ion remains in the solution so purified.
- the acid used to carry out the reaction comes from two sources:
- the acid is in sufficient quantity for the complete leaching of the magnesium contained in the raw material (100), that is, to achieve the total dissolution of the magnesium contained in the raw material (100).
- the stream (205) from the leaching (200) of the raw material (100) is separated (250) to produce:
- the separation stage (250) guarantees the purification of the reagents used in the reactor (300) and that the current (220) is a practically pure solution of sulfate or magnesium chloride.
- filtration is preferred because the bed formed by the precipitated solids acts as an additional filter medium to that provided in the equipment.
- the magnesium solution (220) obtained from leaching (200) is fed to a reactor (300) where it is reacted with an alkali (310), preferably sodium hydroxide, from the "acid and alkali regeneration step""(400), although other alkali metal or alkaline earth metal hydroxides, such as potassium hydroxide, may be used, provided the salt formed by the substitution of OH " is soluble, to prevent it from creeping with precipitated magnesium hydroxide.
- an alkali preferably sodium hydroxide
- magnesium hydroxide is formed in suspension; this suspension (305) is subjected to a solid liquid separation (350) from which as a product (800) is obtained to high purity magnesium hydroxide;
- the separation (350) is carried out by conventional methods, such as filtration, sedimentation, centrifugation, etc.
- the remaining mother liquor (320) is an aqueous solution of soluble sodium salts and eventually the salt formed by the replacement of OH " in the alkali; this solution (320) is fed to the last stage (400) of" acid regeneration and alkali.
- the alkali and acid regeneration in step (400) is carried out by electrochemical decomposition of the solution (320) in hydroxide and sulfuric or hydrochloric acid as appropriate, where the regenerated hydroxide is recirculated to step (300) by the stream (310) and the regenerated acid is recirculated to step (200) via the stream (210).
- a natural dolomite is selected as raw material, with the composition shown in Table 2, in an amount of 3.16 kg.
- the raw material is ground to a size less than 0.25 inches. It is placed in a reactor with stirrer, to which a solution of "new" sulfuric acid is added to 28%, this is in a concentration similar to that obtained from the regeneration of alkali and acid.
- the composition of said sample acid in Table 3.
- the resulting suspension is filtered using Whatman 40 paper as a filter medium with 8 micron pore opening.
- the plaster formed is separated from the mother liquor Composed primarily of a solution of sodium sulfate and impurities of dolomite and "new" sulfuric acid.
- the magnesium sulfate solution is placed in a stirred reactor and reacted with a solution of 26% sodium hydroxide, the composition of which is shown in Table 4, that is, in a concentration similar to that obtained from Alkali and acid regeneration.
- the magnesium hydroxide suspension formed is separated from the mother liquor by centrifugation, the mother liquor, which is a solution of sodium sulfate, is separated for use in regeneration.
- the magnesium hydroxide cake is subjected to a series of washing steps to remove the remaining mother liquor.
- sulfuric acid and sodium hydroxide are regenerated in an electrodialysis cell which consists of two electrodes (anode and cathode) and pairs of selective membranes for cations and anions.
- the regenerated soda is used in the subsequent reaction stages and only the necessary one will be replenished to compensate for process losses as a solution remaining in the magnesium hydroxide cake.
- the regenerated sulfuric acid is used in the subsequent leaching stages of magnesium present in dolomite, but it is necessary to add "new" acid to compensate for that consumed with the plaster and as a remaining solution.
- Table 5 shows the main components of the process currents, identified according to Figure 1. Table 5. MAIN COMPONENTS OF THE CURRENTS OF THE PROCESS FOLLOWED IN THE EXAMPLE.
- hydrooxide refers to a strong alkali that can be regenerated by electrodialysis
- acid although limited to sulfuric and hydrochloric, may refer to other strong acids that are feasible to regenerate by electrodialysis.
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
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/062,242 US8900545B2 (en) | 2008-09-05 | 2008-09-05 | Process for the production of high purity magnesium hydroxide |
MX2011002490A MX342462B (es) | 2008-09-05 | 2008-09-05 | Proceso para la produccion de hidroxido de magnesio de alta pureza. |
PCT/MX2008/000117 WO2010027247A1 (es) | 2008-09-05 | 2008-09-05 | Proceso para la producción de hidroxido de magnesio de alta pureza |
CA2736379A CA2736379C (en) | 2008-09-05 | 2008-09-05 | Process for the production of high purity magnesium hydroxide |
CN2008801318508A CN102216219A (zh) | 2008-09-05 | 2008-09-05 | 高纯度氢氧化镁的制备方法 |
CL2009001636A CL2009001636A1 (es) | 2008-09-05 | 2009-07-22 | Proceso de obtencion de hidroxido de magnesio de alta pureza de mezcla o compuesto solido, natural o sinteticos que contienen magnesio como carbonato, hidroxido u oxido, comprende lixiviar materia con acido, separar solidos, reaccionar dicha solucion con alcali, separar mgoh, regenerar acido y alcali, y recircular acido y alcali. |
ARP090102838A AR073185A1 (es) | 2008-09-05 | 2009-07-24 | Proceso para la produccion de hidroxido de magnesio de alta pureza |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/MX2008/000117 WO2010027247A1 (es) | 2008-09-05 | 2008-09-05 | Proceso para la producción de hidroxido de magnesio de alta pureza |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010027247A1 true WO2010027247A1 (es) | 2010-03-11 |
Family
ID=41797294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/MX2008/000117 WO2010027247A1 (es) | 2008-09-05 | 2008-09-05 | Proceso para la producción de hidroxido de magnesio de alta pureza |
Country Status (7)
Country | Link |
---|---|
US (1) | US8900545B2 (es) |
CN (1) | CN102216219A (es) |
AR (1) | AR073185A1 (es) |
CA (1) | CA2736379C (es) |
CL (1) | CL2009001636A1 (es) |
MX (1) | MX342462B (es) |
WO (1) | WO2010027247A1 (es) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101499139B1 (ko) * | 2014-07-18 | 2015-03-06 | 주식회사 나노텍세라믹스 | 탄산염의 연속 제조방법 |
CN106882824A (zh) * | 2015-12-16 | 2017-06-23 | 中国科学院大连化学物理研究所 | 一种纳米氢氧化镁制备方法及纳米氢氧化镁 |
ES2641269B1 (es) * | 2016-04-05 | 2018-09-06 | Abengoa Water, S.L. | Procedimiento de obtención de hidróxido de magnesio a partir de efluentes salinos |
CN107032384B (zh) * | 2017-06-05 | 2019-02-22 | 中南大学 | 一种从钙镁矿物中分离回收钙镁的方法 |
WO2019036676A1 (en) * | 2017-08-18 | 2019-02-21 | The Regents Of The University Of California | EASY, LOW ENERGY ROUTES FOR THE PRODUCTION OF CALCIUM SALTS AND MAGNESIUM MOISTURIZED FROM INDUSTRIAL ALKALINE WASTE |
US11180860B2 (en) | 2018-05-18 | 2021-11-23 | California Institute Of Technology | Process to convert reduced sulfur species and water into hydrogen and sulfuric acid |
US11040898B2 (en) * | 2018-06-05 | 2021-06-22 | The Regents Of The University Of California | Buffer-free process cycle for CO2 sequestration and carbonate production from brine waste streams with high salinity |
BR112021023624A2 (pt) | 2019-06-14 | 2022-01-04 | Univ California | Enriquecimento de cátion alcalino e eletrólise de água para prover mineralização de co2 e gerenciamento de carbono em escala global |
BR112022002685A2 (pt) | 2019-08-13 | 2022-05-24 | Brimstone Energy Inc | Processo para fabricar óxido de cálcio ou cimento portland comum a partir de rochas e minerais contendo cálcio |
WO2021217261A1 (en) * | 2020-04-29 | 2021-11-04 | Planetary Hydrogen Inc. | Electrochemical system, apparatus and method to generate metal hydroxide in the presence of metal silicates |
CN112723396A (zh) * | 2021-01-04 | 2021-04-30 | 贵州芭田生态工程有限公司 | 一种化学选矿副产物制取氧化镁和硝酸铵钙的方法 |
JP2024538151A (ja) | 2021-10-18 | 2024-10-18 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニア | Mg(OH)2の生産及びCO2の鉱物固定化を可能にする海水の電気分解 |
US12246993B2 (en) | 2022-02-21 | 2025-03-11 | Carbonbuilt | Methods and systems for biomass-derived CO2 sequestration in concretes and aggregates |
WO2023200905A1 (en) | 2022-04-12 | 2023-10-19 | Carbonbuilt | Process for production of hydraulic-carbonating binder systems through mechanochemical activation of minerals |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103023A (ja) * | 1983-11-10 | 1985-06-07 | Shin Nippon Kagaku Kogyo Co Ltd | 高純度水酸化マグネシウムの製造法 |
US4693872A (en) * | 1984-01-20 | 1987-09-15 | Asahi Glass Company Ltd. | Process for producing highly pure magnesium hydroxide |
ES2020135A6 (es) * | 1990-04-16 | 1991-07-16 | Ercros Sa | Procedimiento para la obtencion de hidroxido de magnesio. |
US5362460A (en) * | 1993-09-24 | 1994-11-08 | Science Ventures Inc. | Magnesium separation from dolomitic phosphate by sulfuric acid leaching |
CN101219800A (zh) * | 2007-01-08 | 2008-07-16 | 杜高翔 | 一种利用低品味菱镁矿制备纳米氢氧化镁的方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2178983A (en) * | 1933-12-23 | 1939-11-07 | Magnesium Dev Corp | Production of magnesium hydroxide |
US2167311A (en) * | 1937-09-17 | 1939-07-25 | Postma Frank | Method of abrading crankshafts |
US2245820A (en) * | 1941-01-15 | 1941-06-17 | Postma Frank | Abrading device |
US2801155A (en) * | 1955-03-24 | 1957-07-30 | Paul O Tobeler | Method of producing magnesium hydroxide from dolomite by means of nitric acid |
US4937056A (en) * | 1986-06-20 | 1990-06-26 | Materials-Concepts-Research Limited | Process for obtaining high purity magnesium compounds from magnesium containing materials |
JPH06103023A (ja) * | 1992-04-24 | 1994-04-15 | Nec Corp | 日本語コード変換処理方式 |
US5749774A (en) * | 1996-09-27 | 1998-05-12 | Foster; John R. | Valve refacing tool |
US6113471A (en) * | 1999-03-24 | 2000-09-05 | Kuebler; David A. | Chassis journal corrector system |
US6214313B1 (en) * | 1999-04-13 | 2001-04-10 | Dravo Lime, Inc. | High-purity magnesium hydroxide and process for its production |
-
2008
- 2008-09-05 MX MX2011002490A patent/MX342462B/es active IP Right Grant
- 2008-09-05 US US13/062,242 patent/US8900545B2/en not_active Expired - Fee Related
- 2008-09-05 WO PCT/MX2008/000117 patent/WO2010027247A1/es active Application Filing
- 2008-09-05 CN CN2008801318508A patent/CN102216219A/zh active Pending
- 2008-09-05 CA CA2736379A patent/CA2736379C/en not_active Expired - Fee Related
-
2009
- 2009-07-22 CL CL2009001636A patent/CL2009001636A1/es unknown
- 2009-07-24 AR ARP090102838A patent/AR073185A1/es not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103023A (ja) * | 1983-11-10 | 1985-06-07 | Shin Nippon Kagaku Kogyo Co Ltd | 高純度水酸化マグネシウムの製造法 |
US4693872A (en) * | 1984-01-20 | 1987-09-15 | Asahi Glass Company Ltd. | Process for producing highly pure magnesium hydroxide |
ES2020135A6 (es) * | 1990-04-16 | 1991-07-16 | Ercros Sa | Procedimiento para la obtencion de hidroxido de magnesio. |
US5362460A (en) * | 1993-09-24 | 1994-11-08 | Science Ventures Inc. | Magnesium separation from dolomitic phosphate by sulfuric acid leaching |
CN101219800A (zh) * | 2007-01-08 | 2008-07-16 | 杜高翔 | 一种利用低品味菱镁矿制备纳米氢氧化镁的方法 |
Also Published As
Publication number | Publication date |
---|---|
MX2011002490A (es) | 2013-04-05 |
CL2009001636A1 (es) | 2011-09-16 |
CA2736379A1 (en) | 2010-03-11 |
CA2736379C (en) | 2014-04-08 |
AR073185A1 (es) | 2010-10-20 |
US8900545B2 (en) | 2014-12-02 |
CN102216219A (zh) | 2011-10-12 |
US20110195017A1 (en) | 2011-08-11 |
MX342462B (es) | 2016-09-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2010027247A1 (es) | Proceso para la producción de hidroxido de magnesio de alta pureza | |
US11634789B2 (en) | Selective lithium extraction from brines | |
US3970528A (en) | Process for the purification of electrolysis brine | |
CN104302791B (zh) | 用于处理赤泥的方法 | |
ES2748429T3 (es) | Proceso hidrometalúrgico para producir metal de magnesio puro y diversos subproductos | |
CN105753218B (zh) | 一种去除三价砷的方法 | |
ES2898071T3 (es) | Producción de un concentrado que contiene escandio y subsiguiente extracción de óxido de escandio de alta pureza a partir del mismo | |
CN107454916A (zh) | 包括HCl喷射的含锂材料的加工 | |
US6143260A (en) | Method for removing magnesium from brine to yield lithium carbonate | |
JP2019099901A (ja) | リチウム含有水溶液からリチウムを回収する方法 | |
AU2011236094A1 (en) | Production of high purity lithium compounds directly from lithium containing brines | |
KR101551896B1 (ko) | 직접 탄산염화 반응을 이용한 고순도 탄산칼슘의 제조방법 | |
AU2007216890B2 (en) | Process for treating electrolytically precipitated copper | |
ES3010710A2 (es) | Metodo para recuperar material de bateria de litio de desecho | |
JP6299620B2 (ja) | 硫酸ニッケルの製造方法 | |
WO2022147632A1 (es) | Método para la producción de hidróxido de litio (lioh) directamente a partir de cloruro de litio (lici), sin necesidad de una producción intermedia de carbonato de litio o similar | |
US4508690A (en) | Method of producing very pure magnesium oxide | |
CN102167369B (zh) | 一种降低LiCl中NaCl含量的方法 | |
US20150050206A1 (en) | Method of preparing calcium carbonate using direct carbonation reaction | |
WO2017041738A1 (zh) | 含铵根离子废水的回收利用工艺及金属氧化物的制备方法 | |
WO2009078690A1 (es) | Proceso para la producción de sulfato de sodio e hidroxido de magnesio | |
FI107253B (fi) | Menetelmä lentotuhkan käsittelemiseksi | |
CN110498431A (zh) | 一种高纯度球形氯化钾的制备方法 | |
CN117580805B (zh) | 一种废旧磷酸铁锂的回收利用方法 | |
CN101760618B (zh) | 改进的含镁矿石浸出方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880131850.8 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08812635 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2736379 Country of ref document: CA Ref document number: MX/A/2011/002490 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 646/MUMNP/2011 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13062242 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08812635 Country of ref document: EP Kind code of ref document: A1 |