[go: up one dir, main page]

WO2018159986A1 - Procédé de préparation d'hydroxyde de magnésium de haute pureté - Google Patents

Procédé de préparation d'hydroxyde de magnésium de haute pureté Download PDF

Info

Publication number
WO2018159986A1
WO2018159986A1 PCT/KR2018/002408 KR2018002408W WO2018159986A1 WO 2018159986 A1 WO2018159986 A1 WO 2018159986A1 KR 2018002408 W KR2018002408 W KR 2018002408W WO 2018159986 A1 WO2018159986 A1 WO 2018159986A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnesium
carbonate
hydroxide
sodium
solution
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.)
Ceased
Application number
PCT/KR2018/002408
Other languages
English (en)
Korean (ko)
Inventor
김명준
트란탐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Industry Foundation of Chonnam National University
Original Assignee
Industry Foundation of Chonnam National University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from KR1020180022712A external-priority patent/KR102082873B1/ko
Application filed by Industry Foundation of Chonnam National University filed Critical Industry Foundation of Chonnam National University
Publication of WO2018159986A1 publication Critical patent/WO2018159986A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • C01F5/02—Magnesia
    • C01F5/06—Magnesia by thermal decomposition of magnesium compounds
    • 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
    • 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
    • C01F5/16—Magnesium hydroxide by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium

Definitions

  • the present invention relates to a method for producing a high-purity magnesium hydroxide, and more specifically to producing hydrated magnesium carbonate (HMC: Hydrated Magnesium Carbonate) from a raw material solution containing calcium, magnesium and sodium, A method for producing magnesium (Mg (OH) 2 ).
  • HMC Hydrated Magnesium Carbonate
  • Magnesium (Mg) and its compounds have been used in insulation and building materials, agricultural products, chemicals and other industries. Magnesium production around the world is increasing every year, exceeding 429,000 tpa due to increased demand for magnesium alloys in the automotive industry. Minerals containing magnesium can be used as magnesite, dolomite, bluesite and serpentine, which are mainly processed into refractory or agricultural products.
  • High purity magnesium products can be processed from seawater, brine and brine.
  • Seawater contains about 1 ⁇ 1.3g / L magnesium, and raw material of magnesium bearing in salt water and brine is estimated to be billions of tons.
  • High purity magnesium oxide (MgO) is used in food and pharmaceuticals in particular, and magnesium hydroxide (Mg (OH) 2 ) and hydrated magnesium carbonate are considered one of the best fire suppressants.
  • the magnesium hydroxide may be used as an antacid using a chemical property, a stabilizer of vinyl chloride, an emollient, a flue gas desulfurization agent, a magnesium oxide fertilizer, a food additive, and the like, and may also be used as a flame retardant of a resin utilizing physical properties.
  • Magnesium minerals such as magnesite, are processed to produce magnesia or magnesium oxide, which is mainly used as a fireproofing agent by calcination or melting for a long time. Produced from and guarded.
  • magnesium oxide from dolomite and magnesite there is a method of removing magnesium oxide using seawater and hydrochloric acid after roasting dolomite and magnesium oxide with magnesium oxide and calcium oxide, and then removing the crystal water.
  • the method does not perform selective separation of calcium oxide during the manufacture of magnesium chloride, there is a problem in that the economic efficiency is poor because a process such as crystal water removal is required.
  • the magnesium hydroxide slurry can be obtained by hydrating magnesium oxide by mixing and stirring a large amount of water and a hydration accelerator in a magnesium oxide powder obtained by calcining and pulverizing magnesium carbonate (MgCO 3 ) ore.
  • MgCO 3 magnesium carbonate
  • the present inventors have completed the present invention by developing a method for producing high-purity magnesium hydroxide from hydrated magnesium carbonate (HMC: Hydrated Magnesium Carbonate).
  • HMC Hydrated Magnesium Carbonate
  • an object of the present invention is to prepare a hydrated magnesium carbonate from a raw material solution containing calcium, magnesium and sodium, and to manufacture high purity magnesium hydroxide of 99.9% or more using hydrothermal synthesis without a separate reaction additive. To provide a way.
  • Another object of the present invention is to provide a low-cost high-purity magnesium hydroxide production method that can greatly improve the hexagonal plate crystallinity of magnesium hydroxide without adding a separate reaction additive to the magnesium oxide powder in the hydrothermal synthesis process.
  • the present invention provides a solution preparation step of preparing a calcium, magnesium and sodium-containing raw material solution and a carbonate solution, and mixing and stirring the raw material solution and the carbonate solution to form calcium carbonate and magnesium carbonate
  • Precipitating calcium carbonate precipitating step calcium carbonate separation step of removing the precipitated calcium carbonate and magnesium carbonate, the first mixture for precipitating magnesium carbonate by mixing and stirring the raw material solution and the carbonate solution from which the calcium carbonate is removed
  • a solution preparation step a second mixed solution preparation step of precipitating hydrated magnesium carbonate (HMC) by mixing and stirring a hydroxide solution in the first mixed solution, and filtering the second mixed solution Minutes the sediment
  • the washing step is a filtering step, a washing step for washing impurities to remove impurities other than sodium, and the washed precipitate is dried in an oven to attach sodium hydrate magnesium carbonate (4 (MgCO 3 Mg (OH) 2 nH 2 O) drying step to prepare a powder, and magnesium oxide (M
  • the washing step washes the separated precipitate once or twice with DI water.
  • the hydrothermal synthesis step is hydrothermally synthesized for 0.5 to 2 hours at a constant temperature in the range of 100 to 250 °C.
  • the carbonate solution is used to dissolve sodium carbonate (Na 2 CO 3 ).
  • the carbonate solution is added so that the molar ratio of magnesium and carbonate ions contained in the raw material solution is 1: 0.6 to 1: 1.0.
  • the hydroxide solution is used that is dissolved sodium hydroxide (NaOH).
  • the hydroxide solution is added so that the molar ratio of magnesium and hydroxide ions contained in the raw material solution is 1: 0.1 to 1: 0.3.
  • the second mixed solution manufacturing step maintains the pH of the second mixed solution in the range of greater than 8 and less than 10.
  • the magnesium oxide powder production step is roasted at a temperature of 500 °C.
  • the magnesium oxide prepared through the magnesium oxide powder manufacturing step has a specific surface area of 60 to 100 m 2 / g, carbonate component is removed.
  • the magnesium hydroxide drying step is dried at a constant temperature in the range of 50 to 150 °C.
  • the hydrate magnesium carbonate powder prepared in the drying step is characterized by containing 97.0 to 97.5% of magnesium, 2.5 to 3.0% of sodium.
  • the magnesium oxide powder prepared in the magnesium oxide powder production step is characterized in that there is no magnesium carbonate (MgCO 3 ) crystal phase, it contains 2.5% to 3.0% sodium.
  • the present invention has the following excellent effects.
  • hydrate magnesium carbonate is prepared from a raw material solution containing calcium, magnesium, and sodium, and high purity magnesium hydroxide of 99.5% or more can be produced, high added value of resources can be created.
  • the crystallinity on the hexagonal plate can be greatly improved by sodium adhering to the hydrated magnesium carbonate powder and the magnesium oxide powder. There is an effect that can be prepared.
  • 1 is a process chart illustrating a method of manufacturing high purity magnesium hydroxide according to an embodiment of the present invention.
  • Figure 2 is a component analysis table of sodium hydrate magnesium carbonate powder.
  • Figure 3 is an XRD analysis of sodium hydrate magnesium carbonate powder.
  • FIG. 9 is a view showing a particle size result of high purity magnesium hydroxide prepared according to an embodiment of the present invention.
  • 1 is a process chart illustrating a method of manufacturing high purity magnesium hydroxide according to an embodiment of the present invention.
  • the technical feature of the present invention lies in a method of producing hydrated magnesium carbonate from a raw material solution containing calcium, magnesium and sodium, and at least 99.5% of high purity magnesium hydroxide.
  • the method for producing high purity magnesium hydroxide comprises the steps of preparing a powder of hydrated magnesium carbonate (4 (MgCO 3 ) Mg (OH) 2 nH 2 O) powder with sodium (S10) and oxidation.
  • a magnesium hydroxide is prepared using magnesium powder (S20).
  • the step of preparing the sodium hydrate magnesium carbonate powder (S10) is a solution preparation step (S11), calcium carbonate precipitation step (S12), calcium carbonate separation step (S13), the first mixing Solution manufacturing step (S14), the second mixed solution production step (S15), filtering step (S16), washing step (S17) and drying step (S18), including magnesium hydroxide using the magnesium oxide powder Manufacturing step (S20) is magnesium oxide powder production step (S21), magnesium hydroxide slurry production step (S22), hydrothermal synthesis step (S23), solid-liquid separation step (S24), impurity removal step (S25) and magnesium hydroxide drying step (S26).
  • the calcium, magnesium and sodium-containing raw solution may be a solution in which calcium ions, magnesium ions and sodium ions coexist simultaneously, including leachate after roasting seawater, dolomite or magnesite, and highly concentrated seawater generated during seawater desalination.
  • PH is usually 6-7.
  • the raw material solution containing calcium, magnesium and sodium used in the present invention is Dempier Bittern solution of Rio Tino Co., Australia, Na (84.09 g / kg), Mg (9.59 g / kg), Ca (0.24 g / kg), K (2.91) g / kg) was prepared to contain a solution. That is, in the embodiment of the present invention, hydrated magnesium carbonate (HMC: Hydrated Magnesium Carbonate) was manufactured using a solution containing about 40 times more magnesium (Mg) than the amount of calcium (Ca).
  • HMC Hydrated Magnesium Carbonate
  • the carbonate solution uses a material that generates carbonate ions.
  • a reagent including a carbonic acid (CO 3 2- ) group such as sodium carbonate (Na 2 CO 3 ) may be prepared.
  • the carbonate solution is added so that the molar ratio of magnesium and carbonate ions contained in the raw material solution is 1: 0.6 to 1: 1.0, the molar ratio is preferably 1: 0.8.
  • the sodium carbonate (Na 2 CO 3 ) is added so that the molar ratio of magnesium and carbonate ions in the raw material solution is 1: 1.0, all the magnesium is changed to MgCO 3 .
  • the prepared raw material solution and the carbonate solution are mixed and stirred to precipitate calcium carbonate (S12), and the precipitated calcium carbonate is separated through solid-liquid separation (S13).
  • S12 calcium carbonate
  • S13 solid-liquid separation
  • magnesium carbonate is precipitated at the same time as precipitated calcium carbonate, and a small amount of magnesium carbonate is also separated through solid-liquid separation, resulting in loss of magnesium.
  • the above process can remove most of the calcium acting as an impurity of the hydrated magnesium carbonate, the loss of magnesium has only a small effect on the purity of the high-purity hydrate magnesium, it is preferable to go through the calcium removal process.
  • composition of the raw material solution after the calcium removal process in the initial raw material solution is Na (82.25g / kg), Mg (8.62g / kg), Ca (0.09g / kg), K (2.62g / kg)
  • the solution contains elements such as.
  • the first mixed solution is prepared by mixing and stirring the raw material solution from which the calcium carbonate is removed and stirring (S14).
  • the raw material solution and the carbonate solution is mixed with the precipitate is produced, the resulting precipitate is magnesium carbonate and the pH of the solution is 8.6 ⁇ 8.8.
  • the hydroxide solution is prepared, mixed with the first mixed solution and stirred to prepare a second mixed solution (S15).
  • the first mixed solution and the hydroxide solution is mixed with the precipitate is produced at the same time, the resulting precipitate is hydrate magnesium carbonate (HMC) is attached to sodium.
  • HMC hydrate magnesium carbonate
  • the hydroxide solution is adjusted to maintain the pH of the second mixed solution of 8 to 10, it is more preferable to maintain the pH does not exceed 10. This is because when the pH exceeds 10, the precipitate formed is not hydrated magnesium carbonate but magnesium carbonate (MgCO 3 ) and magnesium hydroxide (Mg (OH) 2 ) alone.
  • the hydroxide solution such as sodium (NaOH), such as hydroxide (OH -) hydroxide to use a material generating hydroxide ions
  • the hydroxide solution is added so that the molar ratio of magnesium and hydroxide ions contained in the raw material solution is 1: 0.1 ⁇ 1: 0.3, it is preferable that the molar ratio is 1: 0.2.
  • Sodium hydrate magnesium carbonate (HMC) precipitated in the second mixed solution manufacturing step is separated through a filtering step (S16), and the washing step (S17) was carried out to remove impurities other than sodium attached to the precipitate. Then, the drying step (S18) in the oven is produced to the sodium hydrate magnesium carbonate (HMC) is attached.
  • HMC sodium hydrate magnesium carbonate
  • the precipitated hydrate magnesium carbonate is attached to impurities such as Na, K, Ca, Cl, SO 4 2- . All impurities must be removed in order to prepare ultra-high hydrate magnesium carbonate, but in the embodiment of the present invention, while manufacturing high-purity hydrate magnesium carbonate, it is left without removing sodium to prepare magnesium hydroxide at low cost. In other words, if the DI water is washed once or twice, the remaining impurities may be removed while leaving some sodium (Na).
  • the sodium component which is not removed and attached to the hydrate magnesium carbonate, serves as a catalyst for improving the crystallinity on the hexagonal plate of magnesium hydroxide in the hydrothermal synthesis step (S23), which is a post-process.
  • the resulting hydrate magnesium carbonate (HMC) was either 4 (MgCO 3 ) Mg (OH) 2 4H 2 O hard hydrate magnesium carbonate or 4 (MgCO 3 ) Mg (OH) 2 5H 2 O and 4 (MgCO 3 ) Mg (OH ) 2 8H 2 O It may be a heavy hydrate magnesium carbonate, it can be adjusted by adjusting the temperature range in the drying process.
  • the hydrated magnesium carbonate powder prepared in the drying step (S18) contains 97.0 to 97.5% of magnesium and 2.5 to 3.0% of sodium.
  • HMC hydrate magnesium carbonate
  • MgO high purity magnesium oxide
  • the prepared sodium hydrate magnesium carbonate (HMC) is roasted and manufactured.
  • HMC hydrate magnesium carbonate
  • MgO magnesium oxide
  • the roasting process is preferably performed for about 1 hour at a constant temperature range of 450 to 600 °C.
  • carbonate component (CO 3 ) is not removed, making it difficult to hydrolyze.
  • the specific surface is closed This is because hydrolysis is difficult because it exists in a state.
  • the specific surface area is 60 to 100 m 2 / g is wide because the hydrolysis reaction is well made is most preferred.
  • the magnesium oxide powder prepared in the magnesium oxide powder manufacturing step (S21) does not include a magnesium carbonate (MgCO 3 ) crystal phase, but only a magnesium oxide (MgO) crystal phase and contains about 2.5% to 3.0% of sodium.
  • magnesium hydroxide slurry production step (S22) water is added to the magnesium oxide powder with sodium and hydrolysis is performed to prepare a magnesium hydroxide (Mg (OH) 2 ) slurry with sodium.
  • the hydrolysis reaction does not require a material such as a hydrolysis accelerator other than water.
  • the sodium hydroxide slurry with sodium is hydrothermally synthesized to improve crystallinity on the hexagonal plate.
  • the hydrothermal synthesis step (S23) is preferably carried out for 0.5 to 2 hours at a predetermined temperature in the range of 100 to 250 °C, the magnesium hydroxide to be prepared will have a hexagonal plate-like crystal structure.
  • the hydrothermal synthesis of magnesium hydroxide is possible without adding a separate reaction additive.
  • the magnesium hydroxide slurry contains about 2% or more sodium (Na) component, which acts as a catalyst and greatly influences the ionic strength to greatly improve the crystallinity of the hexagonal plate.
  • the hydrothermally synthesized magnesium hydroxide is separated, and in the impurity removal step (S25), the magnesium hydroxide is washed to remove impurities attached to the separated magnesium hydroxide.
  • the magnesium hydroxide from which impurities are removed is dried to produce high purity magnesium hydroxide.
  • the magnesium hydroxide drying step is preferably dried at a predetermined temperature in the range of 50 to 150 °C.
  • high purity magnesium hydroxide having a magnesium (Mg) content of 99.5% or more can be prepared.
  • sodium carbonate (Na 2 CO 3 ) was used as the carbonate solution.
  • a dilute solution of Dempier Bittern from Rio Tino of Australia was used as a raw material solution.
  • K (2.91 g / kg) was used as a raw material solution.
  • a solution containing an element of, that is, a solution containing about 40 times more amount of magnesium (Mg) than the amount of calcium (Ca) was used.
  • it is a process for removing calcium (Ca) that may act as an impurity of the final product HMC.
  • Magnesium carbonate (CO 3 2- ) contained in the raw material solution is mixed with the raw material solution and mixed with the raw material solution for about 1 hour, and the calcium carbonate precipitates.
  • step S12 Calcium carbonate precipitated in step S12 is separated by solid-liquid separation, and is separated by vacuum filtration using a vacuum pump.
  • the amount of magnesium and calcium remaining in the mixed solution of the raw material solution and the carbonate solution was determined. Na (82.25g / kg), Mg (8.62g / kg), Ca (0.09g / kg), K (2.62g / kg) and the like. That is, a small amount of magnesium is removed through the calcium removal process, but there is an advantage in that high purity HMC can be manufactured by almost removing calcium.
  • the step of precipitating magnesium carbonate by adding a carbonate solution to the raw material solution from which calcium carbonate has been removed.
  • Magnesium carbonate is mixed with the raw material solution and mixed with the raw material solution for about 2 hours.
  • the carbonate solution prepared so that the molar ratio of magnesium and carbonate ion (CO 3 2- ) in the starting solution is 1: 0.8.
  • Scheme 2 the pH of the first mixed solution is maintained at 8.6 to 8.8.
  • a second mixed solution is prepared by adding a hydroxide solution to the first mixed solution to obtain hydrated magnesium carbonate with sodium.
  • sodium hydroxide (NaOH) solution as a hydroxide
  • the second mixed solution in which the hydrated magnesium carbonate with sodium is precipitated is filtered through a vacuum pump using a vacuum pump.
  • Washing is performed once or twice in DI water to remove impurities except sodium among impurities (Na, K, Ca, Cl, SO 4 2- etc.) attached to precipitated hydrate magnesium carbonate after filtering. .
  • the hydrated magnesium carbonate powder prepared contains 97.16% magnesium and 2.59% sodium.
  • Figure 2 is a component analysis table of sodium hydrate magnesium carbonate powder
  • Figure 3 is the XRD analysis of sodium hydrate magnesium carbonate powder.
  • FIG. 4 is an XRD analysis result of the magnesium oxide powder which has been roasted
  • FIG. 5 is a result showing the particle size of the magnesium oxide powder which has been roasted at various temperatures.
  • magnesium oxide product obtained by roasting the dried hydrated magnesium carbonate (HMC) at 500 ° C. for 1 hour can be confirmed.
  • the XRD analysis shows a 100% MgO crystal phase without MgCO 3 . It can be seen that NaCl is also attached.
  • the product obtained by roasting at 400 °C and 600 °C for 1 hour, respectively it was confirmed that both the crystal phase of MgCO 3 and MgO.
  • the specific surface area value was measured as 62 m 2 / g.
  • the specific surface area change according to temperature shows that MgCO 3 starts to decompose at 450 ° C and the specific surface area value starts to increase, and the maximum value of the specific surface area can be obtained at 500 ° C. It can be seen that the temperature decreases as the specific surface area decreases as the carbonate component and the water molecules escape and the pores start to close.
  • Magnesium hydroxide (Mg (OH) 2 ) slurry is prepared by adding water to the magnesium oxide powder with sodium and performing a hydrolysis reaction. The reaction at this time is shown in [Scheme 5].
  • hydrothermal synthesis of the magnesium hydroxide slurry containing sodium prepared by the hydrolysis reaction to improve the crystallinity on the hexagonal plate hydrothermal synthesis is carried out at 200 °C temperature for about 1 hour.
  • FIG. 6 is a SEM photograph showing the crystal state of hydrothermally synthesized magnesium hydroxide
  • Figure 7 is an XRD analysis of the hydrothermally synthesized magnesium hydroxide at 200 °C temperature.
  • FIG. 6 (c) is a SEM photograph showing the results of the hydrothermal synthesis of the magnesium hydroxide slurry containing no sodium, it can be seen that does not show the crystallinity of the hexagonal plate shape.
  • Magnesium hydroxide slurry is a step of performing solid-liquid separation through vacuum filtration using a vacuum pump.
  • DI water is washed several times (about 3 times) to remove impurities (such as Na) adhering to the precipitated magnesium hydroxide.
  • Magnesium hydroxide from which impurities are removed is dried to prepare high purity magnesium hydroxide.
  • the magnesium hydroxide drying step is a step of drying at a temperature of about 100 °C.
  • FIG. 8 is a component analysis table of high purity magnesium hydroxide prepared according to one embodiment of the present invention
  • FIG. 9 is a view showing particle size results of high purity magnesium hydroxide prepared according to an embodiment of the present invention.
  • a product obtained by hydrolyzing the HMC synthesized according to the molar concentration of Na 2 CO 3 in the hydrate magnesium carbonate (HMC) manufacturing process, and Mg (OH) prepared by hydrothermal synthesis (200 ° C., 1 hour) The result of particle size analysis of 2 can be confirmed.
  • the average particle size (a) of HMC-hydrolyzed products was 12.9 ⁇ m, 13.3 ⁇ m, and 13.4 ⁇ m, respectively.
  • the average particle size (b) was respectively It is understood that ultrafine particles are formed as 1.5 ⁇ m, 1.7 ⁇ m, and 4.6 ⁇ m. It is thought that the nano-sized HMC particles become smaller as they are decomposed and grown during hydrothermal synthesis.
  • the high purity magnesium hydroxide prepared by the present invention can be usefully used in various industries such as antacids, stabilizers of vinyl chloride, stabilizers, flue gas desulfurization agents, magnesium oxide fertilizers, food additives, and flame retardants of resins.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

La présente invention concerne un procédé de préparation d'hydroxyde de magnésium (Mg(OH)2) de haute pureté et, plus spécifiquement, un procédé de préparation d'hydroxyde de magnésium de haute pureté conjointement à la préparation de carbonate de magnésium hydraté (CMH) à partir d'une solution de matière première contenant du calcium, du magnésium et du sodium. Selon la présente invention, de l'hydroxyde de magnésium ayant une pureté élevée supérieure ou égale à 99,5 %, conjointement à la préparation de carbonate de magnésium hydraté, peut être préparé à partir d'une solution de matière première contenant du magnésium et du sodium, en créant ainsi des valeurs ajoutées de ressources élevées.
PCT/KR2018/002408 2017-02-28 2018-02-27 Procédé de préparation d'hydroxyde de magnésium de haute pureté Ceased WO2018159986A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20170026075 2017-02-28
KR10-2017-0026075 2017-02-28
KR1020180022712A KR102082873B1 (ko) 2017-02-28 2018-02-26 고순도 수산화마그네슘의 제조방법
KR10-2018-0022712 2018-02-26

Publications (1)

Publication Number Publication Date
WO2018159986A1 true WO2018159986A1 (fr) 2018-09-07

Family

ID=63371419

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2018/002408 Ceased WO2018159986A1 (fr) 2017-02-28 2018-02-27 Procédé de préparation d'hydroxyde de magnésium de haute pureté

Country Status (1)

Country Link
WO (1) WO2018159986A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110115877A (zh) * 2019-05-15 2019-08-13 河北邢台冶金镁业有限公司 一种氧化镁过滤材料及其制备方法
CN110127734A (zh) * 2019-07-05 2019-08-16 山东理工大学 一种双菱面体无水碳酸镁的制备方法
CN110156054A (zh) * 2019-07-05 2019-08-23 山东理工大学 一种菱面体无水碳酸镁的制备方法
CN110217808A (zh) * 2019-07-05 2019-09-10 山东理工大学 一种长菱面体与短柱菱面体无水碳酸镁混合物的制备方法
CN110217809A (zh) * 2019-07-05 2019-09-10 山东理工大学 一种菱面体短柱无水碳酸镁的制备方法
CN113493215A (zh) * 2021-07-21 2021-10-12 吉林大学 一种活性氢氧化镁的制备方法
CN115072765A (zh) * 2022-06-22 2022-09-20 通化师范学院 一种制备六棱柱状氧化锌的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000233924A (ja) * 1998-12-14 2000-08-29 Kyowa Chem Ind Co Ltd 水酸化マグネシウム粒子およびその製造方法
JP3965270B2 (ja) * 2000-04-19 2007-08-29 宇部マテリアルズ株式会社 高分散性高純度水酸化マグネシウム粉末及びその製造方法、及び水酸化マグネシウムスラリー
KR20130081293A (ko) * 2010-09-28 2013-07-16 다테호 가가쿠 고교 가부시키가이샤 수산화 마그네슘 미립자, 산화 마그네슘 미립자 및 이들의 제조방법
KR101663515B1 (ko) * 2015-01-08 2016-10-07 전남대학교산학협력단 고순도 하이드레이트 마그네슘 카보네이트의 제조방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000233924A (ja) * 1998-12-14 2000-08-29 Kyowa Chem Ind Co Ltd 水酸化マグネシウム粒子およびその製造方法
JP3965270B2 (ja) * 2000-04-19 2007-08-29 宇部マテリアルズ株式会社 高分散性高純度水酸化マグネシウム粉末及びその製造方法、及び水酸化マグネシウムスラリー
KR20130081293A (ko) * 2010-09-28 2013-07-16 다테호 가가쿠 고교 가부시키가이샤 수산화 마그네슘 미립자, 산화 마그네슘 미립자 및 이들의 제조방법
KR101663515B1 (ko) * 2015-01-08 2016-10-07 전남대학교산학협력단 고순도 하이드레이트 마그네슘 카보네이트의 제조방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HOLLINGBERY, L.A. ET AL.: "The thermal decomposition of huntite and hydromagnesite-A review", THERMOCHIMICA ACTA, vol. 509, no. 1-2, September 2010 (2010-09-01), pages 1 - 11, XP055538250 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110115877A (zh) * 2019-05-15 2019-08-13 河北邢台冶金镁业有限公司 一种氧化镁过滤材料及其制备方法
CN110127734B (zh) * 2019-07-05 2021-11-09 山东理工大学 一种双菱面体无水碳酸镁的制备方法
CN110156054A (zh) * 2019-07-05 2019-08-23 山东理工大学 一种菱面体无水碳酸镁的制备方法
CN110217808A (zh) * 2019-07-05 2019-09-10 山东理工大学 一种长菱面体与短柱菱面体无水碳酸镁混合物的制备方法
CN110217809A (zh) * 2019-07-05 2019-09-10 山东理工大学 一种菱面体短柱无水碳酸镁的制备方法
CN110127734A (zh) * 2019-07-05 2019-08-16 山东理工大学 一种双菱面体无水碳酸镁的制备方法
CN110217809B (zh) * 2019-07-05 2021-11-09 山东理工大学 一种菱面体短柱无水碳酸镁的制备方法
CN110156054B (zh) * 2019-07-05 2021-11-09 山东理工大学 一种菱面体无水碳酸镁的制备方法
CN110217808B (zh) * 2019-07-05 2021-11-09 山东理工大学 一种长菱面体与短柱菱面体无水碳酸镁混合物的制备方法
CN113493215A (zh) * 2021-07-21 2021-10-12 吉林大学 一种活性氢氧化镁的制备方法
CN113493215B (zh) * 2021-07-21 2022-11-15 吉林大学 一种活性氢氧化镁的制备方法
CN115072765A (zh) * 2022-06-22 2022-09-20 通化师范学院 一种制备六棱柱状氧化锌的方法
CN115072765B (zh) * 2022-06-22 2023-06-23 通化师范学院 一种制备六棱柱状氧化锌的方法

Similar Documents

Publication Publication Date Title
WO2018159986A1 (fr) Procédé de préparation d'hydroxyde de magnésium de haute pureté
AU764739B2 (en) A method for isolation and production of magnesium metal, magnesium chloride, magnesite and magnesium based products
WO2021085777A1 (fr) Procédé de récupération de lithium à partir de saumure
WO2016111426A1 (fr) Procédé de préparation de carbonate de magnésium hydraté
WO2020130259A1 (fr) Zéolite et sa méthode de préparation
US20130315805A1 (en) Process For Simultaneous Production Of Potassium Sulphate, Ammonium Sulfate, Magnesium Hydroxide And/Or Magnesium Oxide From Kainite Mixed Salt And Ammonia
CA1191698A (fr) Traitement des matieres alumineuses
CN110078390A (zh) 一种高纯高品质氧化钙和氢氧化钙粉体的制备方法
KR102082873B1 (ko) 고순도 수산화마그네슘의 제조방법
WO2022014884A1 (fr) Procédé de fabrication de citrate monocalcique par utilisation de coques et application associée
JPS6236021A (ja) ストロンチウム含有量の少ない炭酸カルシウムの製造方法
KR101441238B1 (ko) 백운석으로부터 칼슘계 화합물을 분리하는 방법
KR20010083819A (ko) 탄산칼슘의 제조 방법
WO2013042897A2 (fr) Procédé pour séparer sélectivement le calcium et le magnésium d'une solution contenant du calcium et du magnésium, oxalate de calcium et oxalate de magnésium obtenus par le procédé, et oxyde de calcium et oxyde de magnésium obtenus à partir desdits oxalates
CN101374767A (zh) 一种制备氧化镁的改进方法
KR101120106B1 (ko) 슬래그를 이용한 염화칼슘의 제조방법
KR100226907B1 (ko) 해수마그네시아 클린커 제조용 고순도 석회유의 제조방법
JP2006335578A (ja) 葉片状二水石膏及びその製造方法
WO2025143575A1 (fr) Procédé de préparation d'hydroxyde de magnésium de haute pureté à partir de sous-produits de procédé de préparation de sel raffiné à l'aide d'une simulation d'équilibre chimique
KR100356399B1 (ko) 고순도의 수산화마그네슘 및 활성 산화마그네슘의 제조방법
US7749483B2 (en) Method for producing alkaline earth metal oxides
WO2024128555A1 (fr) Procédé de récupération de lithium à partir de minerai de lithium
KR830002841B1 (ko) 반토질 광물로부터 Al₂O₃를 추출하는 방법
KR20240080373A (ko) 백운석으로부터 고순도 산화마그네슘을 제조하는 방법
WO2024128655A1 (fr) Adsorbant de lithium à base d'aluminium et son procédé de fabrication

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18760491

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18760491

Country of ref document: EP

Kind code of ref document: A1