CN104477951A - Preparation method of magnesium carbonate - Google Patents
Preparation method of magnesium carbonate Download PDFInfo
- Publication number
- CN104477951A CN104477951A CN201410800719.3A CN201410800719A CN104477951A CN 104477951 A CN104477951 A CN 104477951A CN 201410800719 A CN201410800719 A CN 201410800719A CN 104477951 A CN104477951 A CN 104477951A
- Authority
- CN
- China
- Prior art keywords
- magnesiumcarbonate
- preparation
- magnesium sulfate
- sodium carbonate
- magnesium carbonate
- 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.)
- Pending
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- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 title claims abstract description 54
- 239000001095 magnesium carbonate Substances 0.000 title claims abstract description 49
- 229910000021 magnesium carbonate Inorganic materials 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 34
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 32
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 17
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 16
- 235000019341 magnesium sulphate Nutrition 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 43
- 229960001708 magnesium carbonate Drugs 0.000 claims description 42
- 235000013305 food Nutrition 0.000 claims description 16
- 238000001556 precipitation Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 6
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 abstract description 2
- 238000006297 dehydration reaction Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 16
- 235000017550 sodium carbonate Nutrition 0.000 description 12
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 241001131796 Botaurus stellaris Species 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000026030 halogenation Effects 0.000 description 1
- 238000005658 halogenation reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002002 slurry Substances 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
- C01F5/24—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
The invention discloses a preparation method of magnesium carbonate. The method comprises steps as follows: reacting food-grade magnesium sulfate with food-grade sodium carbonate to prepare magnesium carbonate at the normal temperature, and performing separation, washing, dehydration and drying on the magnesium carbonate to obtain pure food-grade magnesium carbonate. The method is simple in process and easy to control and operate, input raw materials are few, the production cost can be substantially reduced, and the product is the food-grade magnesium carbonate.
Description
Technical field
The present invention relates to the production method of magnesiumcarbonate, that be specifically related to is a kind of preparation method of magnesiumcarbonate.
Background technology
In the industrial production, because adopting raw material different, produce Magnesium Carbonate Light 41-45 and usually have four kinds of methods, one is rhombspar carborization, together calcine by dolomite mineral or magnesite and coal, the grog obtained after calcining is sent into the useless magnesium water of digester and is digested to certain density grey emulsion, ash emulsion sends into carbonating tower after being separated slagging-off, play carburizing reagent with from the carbonic acid gas in the kiln gas of calcining kiln after cleaning and pressurizeing, the carbonization slurries after carbonization is qualified obtain filter residue and clear filtrate and magnesium water clear liquid through separating and filtering.The pyrolysis of heavy magnesium water clear liquid is become basic carbonate magnesium precipitate, and this precipitation, through separating and dehydrating post-drying, pulverizes to obtain finished product.Two is halogenation carborizations, and being namely raw material with bittern, is raw material with the carbonic acid gas, dolomite ash or the lime that produce after rhombspar or limestone calcination, carry out digesting, precipitate, carbonization, the reaction such as pyrolysis and be worth Magnesium Carbonate Light 41-45.Three bittern Method of Sodas, add soda ash liquid by after bittern dilution, after filtration, washing, fragmentation, drying, pulverizing, selection by winnowing, the operation such as packaging, obtain Magnesium Carbonate Light 41-45 finished product.Four is bittern-supercarbonate methods, mix by suitable proportion with ammonium hydrogencarbonate after bittern being gone out decon, carry out precipitin reaction, again through centrifuge dehydration, oven dry, pulverizing, obtained Magnesium Carbonate Light 41-45, have a small amount of sodium-chlor and ammonium chloride, separable sodium-chlor after filtering in mother liquor, ammonium chloride is reclaimed in evaporation, cooling post crystallization simultaneously.
Summary of the invention
The object of the invention is to the above problem overcoming prior art existence, provide a kind of preparation method of magnesiumcarbonate, process costs is lower and process is simple.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A preparation method for magnesiumcarbonate, comprises the following steps:
Magnesium sulfate particle is joined sodium carbonate solution by step 1);
Step 2) obtain magnesiumcarbonate precipitation and metabisulfite solution after reaction for some time;
From solution, filtering separation is out by magnesiumcarbonate precipitation for step 3);
Step 4) by magnesiumcarbonate distilled water wash 2-4 time, then carries out drying and processing with baker, and obtain pure magnesiumcarbonate, the mass ratio of magnesium sulfate and sodium carbonate is 1:1.
Further, in described step 1), magnesium sulfate chooses food grade magnesium sulfate, and sodium carbonate chooses food grade sodium carbonate.
Further, described step 2) temperature of reaction gets normal temperature, and the reaction times is 30-45min.
Further, described step 4) bake out temperature is 95-100 DEG C, and drying time is 1-1.5h.
Further, the magnesiumcarbonate that described step 4) is obtained is food grade magnesiumcarbonate.
The invention has the beneficial effects as follows:
Present invention process is simple, and operation easy to control, raw material less investment, significantly can reduce production cost, and the product of generation is the magnesiumcarbonate of food grade.
Embodiment
Below in conjunction with embodiment, describe the present invention in detail.
A preparation method for magnesiumcarbonate, comprises the following steps:
Magnesium sulfate particle is joined sodium carbonate solution by step 1);
Step 2) obtain magnesiumcarbonate precipitation and metabisulfite solution after reaction for some time;
From solution, filtering separation is out by magnesiumcarbonate precipitation for step 3);
Step 4) by magnesiumcarbonate distilled water wash 2-4 time, then carries out drying and processing with baker, obtains pure magnesiumcarbonate.
Further, in described step 1), magnesium sulfate chooses food grade magnesium sulfate, and sodium carbonate chooses food grade sodium carbonate, and the mass ratio of magnesium sulfate and sodium carbonate is 1:1.
Further, described step 2) temperature of reaction gets normal temperature, and the reaction times is 30-45min.
Further, described step 4) bake out temperature is 95-100 DEG C, and drying time is 1-1.5h.
Further, the magnesiumcarbonate that described step 4) is obtained is food grade magnesiumcarbonate.
Embodiment 1
The food grade magnesium sulfate particle getting 0.5mol joins in the food grade sodium carbonate solution of 0.5mol/L, magnesiumcarbonate precipitation and metabisulfite solution is obtained after reacting 5h under normal temperature, by magnesiumcarbonate precipitation, from solution, filtering separation is out, by magnesiumcarbonate distilled water wash 2 times, at 50 DEG C, dry 1h with baker, obtain pure magnesiumcarbonate.
Embodiment 2
Getting 0.5mol food grade magnesium sulfate particle joins in the food grade sodium carbonate solution of 0.5mol/L, magnesiumcarbonate precipitation and metabisulfite solution is obtained after reacting 7.5h under normal temperature, by magnesiumcarbonate precipitation, from solution, filtering separation is out, by magnesiumcarbonate distilled water wash 3 times, at 55 DEG C, dry 1.2h with baker, obtain pure magnesiumcarbonate.
Embodiment 3
Getting 0.5mol food grade magnesium sulfate particle joins in the food grade sodium carbonate solution of 0.5mol/L, magnesiumcarbonate precipitation and metabisulfite solution is obtained after reacting 10h under normal temperature, by magnesiumcarbonate precipitation, from solution, filtering separation is out, by magnesiumcarbonate distilled water wash 4 times, at 60 DEG C, dry 1.5h with baker, obtain pure magnesiumcarbonate.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a preparation method for magnesiumcarbonate, is characterized in that, comprises the following steps:
Magnesium sulfate particle is joined sodium carbonate solution by step 1);
Step 2) obtain magnesiumcarbonate precipitation and metabisulfite solution after reaction for some time;
From solution, filtering separation is out by magnesiumcarbonate precipitation for step 3);
Step 4) by magnesiumcarbonate distilled water wash 2-4 time, then carries out drying and processing with baker, obtains pure magnesiumcarbonate.
2. the preparation method of magnesiumcarbonate according to claim 1, is characterized in that: in described step 1), magnesium sulfate chooses food grade magnesium sulfate, and sodium carbonate chooses food grade sodium carbonate, and the mass ratio of magnesium sulfate and sodium carbonate is 1:1.
3. the preparation method of magnesiumcarbonate according to claim 1, is characterized in that: described step 2) temperature of reaction gets normal temperature, and the reaction times is 30-45min.
4. the preparation method of magnesiumcarbonate according to claim 1, is characterized in that: described step 4) bake out temperature is 95-100 DEG C, and drying time is 1-1.5h.
5. the preparation method of magnesiumcarbonate according to claim 1, is characterized in that: the magnesiumcarbonate that described step 4) obtains is food grade magnesiumcarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800719.3A CN104477951A (en) | 2014-12-22 | 2014-12-22 | Preparation method of magnesium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800719.3A CN104477951A (en) | 2014-12-22 | 2014-12-22 | Preparation method of magnesium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104477951A true CN104477951A (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410800719.3A Pending CN104477951A (en) | 2014-12-22 | 2014-12-22 | Preparation method of magnesium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104477951A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800542A (en) * | 2020-06-16 | 2021-12-17 | 南风化工集团股份有限公司 | High-efficiency resource utilization technology for coking desulfurization ash |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613120A (en) * | 2009-07-29 | 2009-12-30 | 中国科学院青海盐湖研究所 | Sphere, radial magnesium carbonate and preparation method thereof |
| CN101830488A (en) * | 2010-02-02 | 2010-09-15 | 华东理工大学 | Method for preparing rodlike magnesium carbonate trihydrate |
| CN103936039A (en) * | 2014-05-05 | 2014-07-23 | 辽宁兴海制药有限公司 | Method for directly preparing heavy magnesium carbonate by adopting dry sodium carbonate powder |
-
2014
- 2014-12-22 CN CN201410800719.3A patent/CN104477951A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613120A (en) * | 2009-07-29 | 2009-12-30 | 中国科学院青海盐湖研究所 | Sphere, radial magnesium carbonate and preparation method thereof |
| CN101830488A (en) * | 2010-02-02 | 2010-09-15 | 华东理工大学 | Method for preparing rodlike magnesium carbonate trihydrate |
| CN103936039A (en) * | 2014-05-05 | 2014-07-23 | 辽宁兴海制药有限公司 | Method for directly preparing heavy magnesium carbonate by adopting dry sodium carbonate powder |
Non-Patent Citations (2)
| Title |
|---|
| 李祥: "《食品添加剂使用技术》", 31 January 2011, article "《食品添加剂使用技术》", pages: 313 * |
| 邵平平等: ""碳酸镁水合物在283∼363K范围内的晶体组成及晶型"", 《过程工程学报》, vol. 9, no. 3, 30 June 2009 (2009-06-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800542A (en) * | 2020-06-16 | 2021-12-17 | 南风化工集团股份有限公司 | High-efficiency resource utilization technology for coking desulfurization ash |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |
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| RJ01 | Rejection of invention patent application after publication |