CN113753926A - Method for preparing basic magnesium carbonate by using high sodium-magnesium ratio sodium sulfate industrial wastewater - Google Patents
Method for preparing basic magnesium carbonate by using high sodium-magnesium ratio sodium sulfate industrial wastewater Download PDFInfo
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- CN113753926A CN113753926A CN202111150636.0A CN202111150636A CN113753926A CN 113753926 A CN113753926 A CN 113753926A CN 202111150636 A CN202111150636 A CN 202111150636A CN 113753926 A CN113753926 A CN 113753926A
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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 38
- 239000001095 magnesium carbonate Substances 0.000 title claims abstract description 38
- 229910000021 magnesium carbonate Inorganic materials 0.000 title claims abstract description 38
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title claims abstract description 35
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 32
- 229910052938 sodium sulfate Inorganic materials 0.000 title claims abstract description 31
- 235000011152 sodium sulphate Nutrition 0.000 title claims abstract description 31
- NEMFQSKAPLGFIP-UHFFFAOYSA-N magnesiosodium Chemical compound [Na].[Mg] NEMFQSKAPLGFIP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 23
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000011777 magnesium Substances 0.000 claims abstract description 19
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 238000001556 precipitation Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 5
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims 5
- 239000012047 saturated solution Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000006259 organic additive Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- NEKPCAYWQWRBHN-UHFFFAOYSA-L magnesium;carbonate;trihydrate Chemical compound O.O.O.[Mg+2].[O-]C([O-])=O NEKPCAYWQWRBHN-UHFFFAOYSA-L 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 241000109329 Rosa xanthina Species 0.000 description 1
- 235000004789 Rosa xanthina Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002680 magnesium Chemical class 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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
- C01F5/24—Magnesium carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
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 method for preparing basic magnesium carbonate from high-sodium-magnesium-ratio sodium sulfate industrial wastewater, belonging to the field of basic magnesium carbonate preparation methods. The method comprises the steps of carrying out precipitation reaction on high-sodium-magnesium-ratio sodium sulfate industrial wastewater and a sodium carbonate solution, filtering and washing after the reaction is finished, and drying filter residues for 5-10 hours at the temperature of 80-110 ℃ to obtain the petal-shaped basic magnesium carbonate. The method solves the problem of green resource utilization of industrial wastewater with high sodium-magnesium ratio, has the characteristics of purifying, removing magnesium, recovering high-purity sodium sulfate and preparing basic magnesium carbonate with high use value, has simple process flow and low production cost, does not need any organic additive, and can prepare the flower-ball-shaped basic magnesium carbonate with regular appearance as long as sodium carbonate participates in precipitation.
Description
Technical Field
The invention relates to the field of a preparation method of basic magnesium carbonate, in particular to a method for preparing basic magnesium carbonate by using industrial wastewater of sodium sulfate with a high sodium-magnesium ratio.
Background
With the improvement of environmental protection standards in recent years in China, the green resource utilization of industrial waste liquid is greatly developed. The industrial wastewater with high sodium-magnesium ratio is mainly derived from drainage generated in the production processes of enterprises such as printing and dyeing, refining, pharmacy, salt manufacturing and the like, and has the characteristics of high content of sodium sulfate and low content of magnesium sulfate. If the direct evaporation crystallization is not processed, the purity of the sodium sulfate is too low, and the magnesium resource cannot be comprehensively utilized, so that the resource is seriously wasted. If the waste water is directly discharged, the waste water can cause serious pollution to soil and water quality.
The basic magnesium carbonate as an inorganic material has the characteristics of no toxicity, no smell, no corrosion, white, loose, high decomposition temperature and the like. Has very important application in the fields of flame retardance, environmental protection, medical use, food, rubber products and the like. The basic magnesium carbonate can be used as a chemical raw material to prepare a new product, and is an important inorganic product in the field of chemical engineering. Its usage can be roughly summarized into the following three aspects: an additive used for food and a modifier for various chemical products; is applied to the preparation of medicines and used as an auxiliary medicine for clinical treatment; it can also be used as fireproof heat-insulating material and magnesium series chemical product. The basic magnesium carbonate is assembled by flaky microcrystals and can form shapes of balls, roses, tubes and the like.
Song Xingfu et al (CN IO 1830489A) discloses reacting magnesium chloride solution with sodium carbonate solution at a certain ratio to obtain a rod-like magnesium carbonate trihydrate precursor, dissolving the rod-like magnesium carbonate trihydrate precursor in hot water, aging for a certain time while maintaining the temperature, filtering, and drying to obtain rose petal-shaped basic magnesium carbonate.
The danbo et al patent (CN 109437262B) is a micro-nano basic magnesium carbonate flame retardant obtained by uniformly mixing a sodium carbonate solution and a magnesium chloride solution at a high speed and then aging the mixture in an oven for a certain time.
Disclosure of Invention
The invention aims to provide a method for preparing basic magnesium carbonate by using high-sodium-magnesium-ratio sodium sulfate industrial wastewater, which aims to solve the problem of green resource utilization of the high-sodium-magnesium-ratio sodium sulfate industrial wastewater in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the method for preparing basic magnesium carbonate by using the industrial wastewater of sodium sulfate with high sodium-magnesium ratio comprises the following steps:
step 1, putting a certain amount of industrial wastewater with high sodium-magnesium ratio sodium sulfate into a reactor, continuously stirring at a constant temperature of 25-100 ℃, and adding 0.5-3.5mol/L sodium carbonate solution into the industrial wastewater with high sodium-magnesium ratio sodium sulfate for precipitation reaction; and finishing the reaction after the reaction is carried out for 30-120 min.
And 2, filtering the reaction solution after the reaction is finished, obtaining filtrate for measuring the magnesium content after filtering, wherein the filtrate is high-purity saturated sodium sulfate solution, and drying filter residues for 2-5 hours at the temperature of 90-105 ℃ after washing the filter residues for multiple times to obtain the basic magnesium carbonate.
Further, in the sodium sulfate industrial wastewater with high sodium magnesium ratio in the step 1, the content of magnesium sulfate is 0.1-0.2mol/L, and the sodium magnesium ratio is 20-40.
Further, the temperature of step 1 is 25-100 ℃.
Further, the concentration of the sodium carbonate solution in the step 1 is 0.5-3.5 mol/L.
Further, the ratio of the amount of the substance added to the sodium carbonate solution to the amount of the substance of magnesium in step 1 is n (Mg)2+)：n(CO3 2-)=1:1.8-1:3.0。
Further, the stirring speed in the step 1 is 200-600 r/min.
Further, the filtrate obtained in step 2 is a saturated sodium sulfate solution with high purity.
And further, drying the filter residue in the step 2 at the temperature of 80-110 ℃ for 5-10 h.
Further, drying to obtain the basic magnesium carbonate with petal-shaped appearance.
In the invention, sodium carbonate in a sodium carbonate solution is used as a precipitator, and magnesium ions in the industrial wastewater with high sodium-magnesium ratio sodium sulfate react with carbonate ions and water through a precipitation reaction between the industrial wastewater with high sodium-magnesium ratio sodium sulfate and strong base (sodium carbonate) to generate basic magnesium carbonate precipitate, wherein the chemical reaction formula is as follows:
5MgSO4+6Na2CO3+6H2O=Mg5(OH)2(CO3)4·4H2O↓+2NaHCO3+5Na2SO4
compared with the prior art, the invention has the advantages that: the method utilizes the high sodium-magnesium ratio sodium sulfate industrial wastewater to purify and remove magnesium so as to obtain the high-purity saturated sodium sulfate solution and simultaneously prepare the basic magnesium carbonate. In the invention, only sodium carbonate is needed to be added in the preparation of basic magnesium carbonate, other reagents are not needed to be added, and the basic magnesium carbonate is not needed to be cured in a high-temperature environment; the basic magnesium carbonate prepared by the invention can be precipitated by adding sodium carbonate solution into industrial wastewater with high sodium-magnesium ratio to obtain petal-shaped basic magnesium carbonate without preparing a precursor, and has the advantages of simple process, cheap and easily-obtained raw materials and accordance with the aim of green chemistry advocated by China.
Drawings
FIG. 1 shows the ratio of the amount of sodium carbonate-added substance to the amount of magnesium-containing substance as n (Mg)2+)：n(
) Graph of magnesium content in filtrate at 1:1.8-1: 3.0.
FIG. 2 is an X-ray diffraction pattern of the product of example 1 of the present invention.
FIG. 3 is a scanning electron micrograph of a product according to example 1 of the present invention.
FIG. 4 is an X-ray diffraction pattern of the product of example 2 of the present invention.
FIG. 5 is a scanning electron micrograph of a product of example 2 of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1
The method for preparing basic magnesium carbonate by using the industrial wastewater of sodium sulfate with high sodium-magnesium ratio comprises the following steps:
step 1, measuring 150ml of high-sodium-magnesium-ratio sodium sulfate industrial wastewater with magnesium ion concentration of 0.1mol/L and sodium ion concentration of 3mol/L in a beaker, slowly dripping 30ml of 0.5mol/L sodium carbonate solution into the industrial wastewater at a constant temperature of 60 ℃ and a stirring speed of 300r/min for precipitation reaction for 1 h.
And 2, filtering the reaction solution after the reaction is finished, measuring the magnesium content of the filtrate, and washing the filter residue with water for multiple times. Drying the washed filter residue for 6h in an environment with the temperature of 85 ℃ to obtain the petal-shaped basic magnesium carbonate.
Example 2
Step 1, measuring 150ml of high-sodium-magnesium-ratio sodium sulfate industrial wastewater with magnesium ion concentration of 0.1mol/L and sodium ion concentration of 3mol/L in a beaker, slowly dripping 45ml of 0.5mol/L sodium carbonate solution into the industrial waste liquid for precipitation reaction for 1h at a constant temperature of 60 ℃ and a stirring speed of 300 r/min.
And 2, filtering the reaction solution after the reaction is finished, measuring the magnesium content of the filtrate, and washing the filter residue with water for multiple times. Drying the washed filter residue for 6h in an environment with the temperature of 85 ℃ to obtain the petal-shaped basic magnesium carbonate.
In FIG. 1, it can be seen from the analysis of inductively coupled plasma spectrometer that when the added precipitant is gradually increased, the magnesium content in the original solution is gradually decreased, when n (Mg)2+)：n(
) When the ratio is 1:0.9-1:2.1, the magnesium content in the solution is 0-10ppm, which shows that the magnesium in the industrial waste liquid with high sodium-magnesium ratio can be removed by the process.
The X-ray diffraction pattern analysis in fig. 2 and 4 shows that the samples prepared in examples 1 and 2 are consistent with the standard card of basic magnesium carbonate, indicating that the product obtained by the above method is consistent with the product of the present application.
The scanning electron micrographs at 3 kXmagnification in FIGS. 3 and 5 show that the products of examples 1 and 2 are in the shape of regular spheroids, indicating that the morphology of the products obtained by the above-described process is consistent with that of the application.
The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.
Claims (8)
1. The method for preparing basic magnesium carbonate by using the industrial wastewater of sodium sulfate with high sodium-magnesium ratio is characterized by comprising the following steps:
step 1, putting a certain amount of industrial wastewater with high sodium-magnesium ratio sodium sulfate into a reactor, continuously stirring at a constant temperature of 25-100 ℃, and adding 0.5-3.5mol/L sodium carbonate solution into the industrial wastewater with high sodium-magnesium ratio sodium sulfate for precipitation reaction; ending the reaction after the reaction is carried out for 30-120 min;
and 2, filtering the reaction solution after the reaction is finished, obtaining filtrate for measuring the magnesium content after filtering, wherein the filtrate is high-purity saturated sodium sulfate solution, and drying filter residues for 2-5 hours at the temperature of 90-105 ℃ after washing the filter residues for multiple times to obtain the basic magnesium carbonate.
2. The method for preparing basic magnesium carbonate by using the industrial wastewater with the high sodium-magnesium ratio and the sodium sulfate as claimed in claim 1, wherein in the industrial wastewater with the high sodium-magnesium ratio and the sodium-magnesium ratio, in the step 1, the content of magnesium sulfate is 0.1-0.2mol/L, and the sodium-magnesium ratio is 20-40.
3. The method for preparing basic magnesium carbonate by using industrial wastewater of sodium sulfate with high sodium-magnesium ratio as claimed in claim 1, wherein the concentration of the sodium carbonate solution in the step 1 is 0.5-3.5 mol/L.
4. The method for preparing basic magnesium carbonate by using industrial wastewater with high sodium-magnesium ratio sodium sulfate as claimed in claim 1, wherein in step 1, the ratio of the mass of the substance added into the sodium carbonate solution to the mass of the magnesium is n (Mg)2+)：n(CO3 2-)=1:1.8-1:3.0。
5. The method for preparing basic magnesium carbonate by using industrial wastewater with sodium sulfate and magnesium sulfate with high sodium-magnesium ratio as claimed in claim 1, wherein the stirring speed in step 1 is 200-600 r/min.
6. The method for preparing basic magnesium carbonate by using industrial wastewater with high sodium-magnesium ratio sodium sulfate as claimed in claim 1, wherein the filtrate obtained in step 2 is a saturated solution of high-purity sodium sulfate.
7. The method for preparing basic magnesium carbonate by using industrial wastewater of sodium sulfate with high sodium-magnesium ratio as claimed in claim 6, wherein the drying temperature in step 2 is 80-110 ℃, and the drying time is 5-10 h.
8. The method for preparing basic magnesium carbonate by using industrial wastewater containing sodium sulfate and magnesium sulfate with high sodium-magnesium ratio as claimed in claim 1, wherein the basic magnesium carbonate obtained after drying is petal-shaped.
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| CN202111150636.0A CN113753926A (en) | 2021-09-29 | 2021-09-29 | Method for preparing basic magnesium carbonate by using high sodium-magnesium ratio sodium sulfate industrial wastewater |
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|---|---|---|---|
| CN202111150636.0A CN113753926A (en) | 2021-09-29 | 2021-09-29 | Method for preparing basic magnesium carbonate by using high sodium-magnesium ratio sodium sulfate industrial wastewater |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595284A (en) * | 1944-11-02 | 1947-12-01 | Marine Magnesium Products Corp | Process for production of magnesium carbonate |
| CN101830489A (en) * | 2010-02-02 | 2010-09-15 | 华东理工大学 | Preparation method of porous rose-shaped basic magnesium carbonate |
| CN101880771A (en) * | 2010-06-07 | 2010-11-10 | 中国恩菲工程技术有限公司 | Method for recovering magnesium from magnesium-contained waste liquid |
| CN109437262A (en) * | 2018-11-13 | 2019-03-08 | 武汉纺织大学 | A kind of micro-nano basic magnesium carbonate fire retardant and preparation method thereof |
-
2021
- 2021-09-29 CN CN202111150636.0A patent/CN113753926A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595284A (en) * | 1944-11-02 | 1947-12-01 | Marine Magnesium Products Corp | Process for production of magnesium carbonate |
| CN101830489A (en) * | 2010-02-02 | 2010-09-15 | 华东理工大学 | Preparation method of porous rose-shaped basic magnesium carbonate |
| CN101880771A (en) * | 2010-06-07 | 2010-11-10 | 中国恩菲工程技术有限公司 | Method for recovering magnesium from magnesium-contained waste liquid |
| CN109437262A (en) * | 2018-11-13 | 2019-03-08 | 武汉纺织大学 | A kind of micro-nano basic magnesium carbonate fire retardant and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 阮恒等: "花球状碱式碳酸镁的合成及其阻燃性能", 《化工技术与开发》 * |
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Application publication date: 20211207 |