CN106745152A - A kind of method for preparing nano barium sulfate and co-producing sodium chloride - Google Patents
A kind of method for preparing nano barium sulfate and co-producing sodium chloride Download PDFInfo
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- CN106745152A CN106745152A CN201510826581.9A CN201510826581A CN106745152A CN 106745152 A CN106745152 A CN 106745152A CN 201510826581 A CN201510826581 A CN 201510826581A CN 106745152 A CN106745152 A CN 106745152A
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- barium sulfate
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Abstract
The present invention relates to a kind of method for preparing nano barium sulfate and co-producing sodium chloride, belong to nano material production technical field.The method of the present invention includes dissolving, reaction, separates, dries and produce salt step.The present invention solve the problems, such as existing nano barium sulfate prepare in high cost, process is complicated, be not suitable for industrialized production.The inventive method can single step reaction prepare the nano barium sulfate of small particle diameter, narrowly distributing, good dispersion, and low cost, be adapted to industrialized production.Green production of the present invention, process is simple, the core reaction of the reaction just only has a step, i.e., barium chloride solution and metabisulfite solution are passed directly into the nano barium sulfate that microreactor reaction just can obtain high-quality.Nano barium sulfate average grain diameter D50=50nm, D100=150nm, narrow distribution range, good dispersion.
Description
Technical field
The present invention relates to a kind of method for preparing nano barium sulfate, it is more particularly related to a kind of method for preparing nano barium sulfate and co-producing sodium chloride, belongs to nano material production technical field.
Background technology
Nano barium sulfate is used as a kind of important raw material of industry, be widely used in the aspects such as coating, plastics, rubber and ink paint and receive more and more attention, its particle diameter is small, good dispersion, particle diameter distribution it is narrow be nano barium sulfate premium properties critical index.Preparing the method for barium sulfate at present mainly has recrystallization standby method, barium sulphide-mirabilite method, barium carbonate-sulfuric acid process made of stones etc., and barium sulfate quality prepared by these methods is low, it is impossible to enter high-end market, high quality nano barium sulfate relies primarily on external import.
For particle diameter is big, poor dispersion, particle diameter distribution wide the shortcomings of the problem of low-quality nano barium sulfate product that causes, can be reacted using microreactor.
State Intellectual Property Office discloses a Publication No. CN103159248A in 2013.6.19, the invention of entitled " a kind of production method of nanometer barium sulfate grains ", a kind of production method of nanometer barium sulfate grains of the disclosure of the invention, comprises the following steps：To concentration to add EDETATE DISODIUM in the barium chloride solution of 0.01-0.3mol/L, Chlorine in Solution barium is set to be 1 with the mol ratio of EDETATE DISODIUM：1, didecyl Dimethy ammonium bromide is added, the molar concentration of didecyl Dimethy ammonium bromide is the 0.1-0.5% of barium chloride molar concentration, obtains solution one；To didecyl Dimethy ammonium bromide is added in molar concentration and barium chloride solution identical aqueous sodium persulfate solution, didecyl Dimethy ammonium bromide molar concentration in the solution is the 0.1-0.5% of sodium sulphate molar concentration, obtains solution two；Solution one and two is connect into microreactor entrance respectively, by product filtering, washing, the filtrate drying after washing is obtained the powdered granule of nano barium sulfate.Present invention microreactor suppresses barium sulfate precipitate and grows up under conditions of complexing agent presence, using surfactant, and it is tiny to obtain particle diameter, and the controllable nanometer barium sulfate grains of particle diameter.
State Intellectual Property Office discloses a Publication No. CN101423239 in 2009.5.6, the invention of entitled " a kind of controllable method for preparing nano barium sulfate of particle diameter distribution ", a kind of disclosure of the invention preparation method of the controllable nano barium sulfate of particle diameter distribution.The present invention is with BaCl2And Na2SO4It is raw material, two kinds of solution are configured to respectively, then while in the addition of identical the flow at a high speed rotating liquid-film reactor of rotation, carrying out into nuclear reaction, gained slurries obtain particle diameter for 30-120nm and the narrower nanometer BaSO4 of particle diameter distribution by centrifuge washing and drying.The operating parameters such as rotating speed, the gap of reactor are controlled by adjusting, the purpose of precise control particle size can be reached, the BaSO that particle diameter is 30-40nm can be prepared4.The method combines the advantage of microreactor and supergravity reactor, while the shortcomings of avoiding microemulsion method, complexometry, reaction compartment is small, prepares speed soon, can meet the requirement of preparation of industrialization nanometer BaSO4.
The shortcoming for inventing CN103159248A is need to add complexing agent EDTA, EDTA not only high cost, and easily pollutes environment；The shortcoming for inventing CN101423239 is that the control of high speed rotating liquid-film reactor is complicated, not easy to operate.Above-mentioned technical proposal all cannot single step reaction obtain nano barium sulfate, have enlarge-effect, be not suitable for industrialized production.
The content of the invention
Present invention seek to address that existing nano barium sulfate prepare in high cost, process is complicated, be not suitable for the problem of industrialized production, a kind of method for preparing nano barium sulfate and co-producing sodium chloride is provided, the method can single step reaction prepare the nano barium sulfate of small particle diameter, narrowly distributing, good dispersion, and low cost, it is adapted to industrialized production.
In order to realize foregoing invention purpose, its specific technical scheme is as follows：
A kind of method for preparing nano barium sulfate and co-producing sodium chloride, it is characterised in that：Comprise the following steps that：
A, dissolving
Barium chloride and glauber salt are dissolved in different dissolving tanks respectively, barium chloride solution and metabisulfite solution is respectively obtained, impurity therein is then filtered, is respectively stored in different storage tanks；
B, reaction
Barium chloride solution and metabisulfite solution in storage tank is injected separately into microreactor, is reacted at 20-35 DEG C, produce nano barium sulfate, obtain the mixture of nano barium sulfate and sodium chloride solution；
C, separation
The nano barium sulfate and the mixture of sodium chloride solution that step B is obtained carry out sedimentation separation treatment, and nano barium sulfate solid and sodium chloride solution are separated；
D, drying
The isolated nano barium sulfate solids of step C are carried out into drying drying, nano barium sulfate product is obtained；
E, product salt
The isolated sodium chloride solutions of step C are evaporated crystallization, Nacl sodium chloride is obtained.
In step, described barium chloride solution is the barium chloride solution of 0.5-1.2mol/L to the present invention.
In step, described metabisulfite solution is the aqueous sodium persulfate solution of 0.5-1.2mol/L to the present invention.
In step, the ratio between described barium chloride and the amount of material of sodium sulphate are 1 to the present invention:1.
In step, described metabisulfite solution will also carry out charcoal absorption decolouring to the present invention after filtering and impurity removing matter, and bleaching time is 10min, and temperature is 25-35 DEG C.
In step C, described sedimentation separation treatment uses butterfly sedimentation centrifuge to the present invention.
In step C, the rotating speed of described sedimentation separation treatment is 5000-8000r/min to the present invention, and temperature is 25-35 DEG C.
In step D, described drying is dried is dried the present invention using spraying, and temperature is 115-135 DEG C, and mist flow is 100ml/min.
In step E, described evaporative crystallization is crystallized the present invention using multiple-effect evaporation, and I effect evaporating temperatures are controlled to 115-125 DEG C, and II effect evaporating temperatures are controlled to 100-115 DEG C, and III effect evaporating temperatures are controlled to 90-100 DEG C.
The Advantageous Effects that the present invention brings：
1st, the present invention solve the problems, such as existing nano barium sulfate prepare in high cost, process is complicated, be not suitable for industrialized production.The inventive method can single step reaction prepare the nano barium sulfate of small particle diameter, narrowly distributing, good dispersion, and low cost, be adapted to industrialized production.Green production of the present invention, process is simple, the core reaction of the reaction just only has a step, i.e., barium chloride solution and metabisulfite solution are passed directly into the nano barium sulfate that microreactor reaction just can obtain high-quality.Nano barium sulfate average grain diameter D50=50nm, D100=150nm, narrow distribution range, good dispersion.
2nd, for particle diameter is big, poor dispersion, particle diameter distribution wide the shortcomings of the low-quality nano barium sulfate product that causes, the invention directly prepares nano barium sulfate with microreactor reaction, the standby nano barium sulfate particle diameter of the patent system is small, average grain diameter 50-150nm, particle diameter distribution it is narrow, without obvious agglomeration.Nano barium sulfate good stability prepared by the method, product quality is high and good dispersion, without enlarge-effect, can direct industrialized production, and overcome that the environmental pollution that Conventional nano barium sulfate preparation method possesses is big, conversion ratio is low, Chen Bengao, serious agglomeration the shortcomings of, be a kind of production technology of green cleaning.
3rd, the currently preferred concentration for defining reactant, coordinates with reaction temperature, enables to last product to have narrower particle diameter distribution, and purity is higher, and dispersiveness is more preferably.
4th, the currently preferred rotating speed and temperature defined in separation process, well can separate nano barium sulfate from liquid phase, and efficiency is very high.
5th, in step D, described drying is dried is dried the present invention using spraying, and temperature is 115-135 DEG C, and mist flow is 100ml/min.The restriction of said temperature and flow can obtain dispersed more preferable, the nano barium sulfate of soilless sticking phenomenon.
Specific embodiment
Embodiment 1
A kind of method for preparing nano barium sulfate and co-producing sodium chloride, comprises the following steps that：
A, dissolving
Barium chloride and glauber salt are dissolved in different dissolving tanks respectively, barium chloride solution and metabisulfite solution is respectively obtained, impurity therein is then filtered, is respectively stored in different storage tanks；
B, reaction
Barium chloride solution and metabisulfite solution in storage tank is injected separately into microreactor, is reacted at 20 DEG C, produce nano barium sulfate, obtain the mixture of nano barium sulfate and sodium chloride solution；
C, separation
The nano barium sulfate and the mixture of sodium chloride solution that step B is obtained carry out sedimentation separation treatment, and nano barium sulfate solid and sodium chloride solution are separated；
D, drying
The isolated nano barium sulfate solids of step C are carried out into drying drying, nano barium sulfate product is obtained；
E, product salt
The isolated sodium chloride solutions of step C are evaporated crystallization, Nacl sodium chloride is obtained.
Embodiment 2
A kind of method for preparing nano barium sulfate and co-producing sodium chloride, comprises the following steps that：
A, dissolving
Barium chloride and glauber salt are dissolved in different dissolving tanks respectively, barium chloride solution and metabisulfite solution is respectively obtained, impurity therein is then filtered, is respectively stored in different storage tanks；
B, reaction
Barium chloride solution and metabisulfite solution in storage tank is injected separately into microreactor, is reacted at 35 DEG C, produce nano barium sulfate, obtain the mixture of nano barium sulfate and sodium chloride solution；
C, separation
The nano barium sulfate and the mixture of sodium chloride solution that step B is obtained carry out sedimentation separation treatment, and nano barium sulfate solid and sodium chloride solution are separated；
D, drying
The isolated nano barium sulfate solids of step C are carried out into drying drying, nano barium sulfate product is obtained；
E, product salt
The isolated sodium chloride solutions of step C are evaporated crystallization, Nacl sodium chloride is obtained.
Embodiment 3
A kind of method for preparing nano barium sulfate and co-producing sodium chloride, comprises the following steps that：
A, dissolving
Barium chloride and glauber salt are dissolved in different dissolving tanks respectively, barium chloride solution and metabisulfite solution is respectively obtained, impurity therein is then filtered, is respectively stored in different storage tanks；
B, reaction
Barium chloride solution and metabisulfite solution in storage tank is injected separately into microreactor, is reacted at 28 DEG C, produce nano barium sulfate, obtain the mixture of nano barium sulfate and sodium chloride solution；
C, separation
The nano barium sulfate and the mixture of sodium chloride solution that step B is obtained carry out sedimentation separation treatment, and nano barium sulfate solid and sodium chloride solution are separated；
D, drying
The isolated nano barium sulfate solids of step C are carried out into drying drying, nano barium sulfate product is obtained；
E, product salt
The isolated sodium chloride solutions of step C are evaporated crystallization, Nacl sodium chloride is obtained.
Embodiment 4
A kind of method for preparing nano barium sulfate and co-producing sodium chloride, comprises the following steps that：
A, dissolving
Barium chloride and glauber salt are dissolved in different dissolving tanks respectively, barium chloride solution and metabisulfite solution is respectively obtained, impurity therein is then filtered, is respectively stored in different storage tanks；
B, reaction
Barium chloride solution and metabisulfite solution in storage tank is injected separately into microreactor, is reacted at 21 DEG C, produce nano barium sulfate, obtain the mixture of nano barium sulfate and sodium chloride solution；
C, separation
The nano barium sulfate and the mixture of sodium chloride solution that step B is obtained carry out sedimentation separation treatment, and nano barium sulfate solid and sodium chloride solution are separated；
D, drying
The isolated nano barium sulfate solids of step C are carried out into drying drying, nano barium sulfate product is obtained；
E, product salt
The isolated sodium chloride solutions of step C are evaporated crystallization, Nacl sodium chloride is obtained.
Embodiment 5
On the basis of embodiment 1-4：
Preferably：In step, described barium chloride solution is the barium chloride solution of 0.5mol/L.
Preferably or further：In step, described metabisulfite solution is the aqueous sodium persulfate solution of 0.5mol/L.
Further：In step, the ratio between amount of material of described barium chloride and sodium sulphate is 1:1.
Preferably：In step, described metabisulfite solution will also carry out charcoal absorption decolouring after filtering and impurity removing matter, and bleaching time is 10min, and temperature is 25 DEG C.
Preferably：In step C, described sedimentation separation treatment uses butterfly sedimentation centrifuge.
Preferably or further：In step C, the rotating speed of described sedimentation separation treatment is 5000r/min, and temperature is 25 DEG C.
Preferably：In step D, described drying is dried is dried using spraying, and temperature is 115 DEG C, and mist flow is 100ml/min.
Preferably：In step E, described evaporative crystallization is crystallized using multiple-effect evaporation, and I effect evaporating temperatures are controlled to 115 DEG C, and II effect evaporating temperatures are controlled to 100- DEG C, and III effect evaporating temperatures are controlled to 90 DEG C.
Embodiment 6
On the basis of embodiment 1-4：
Preferably：In step, described barium chloride solution is the barium chloride solution of 1.2mol/L.
Preferably or further：In step, described metabisulfite solution is the aqueous sodium persulfate solution of 1.2mol/L.
Further：In step, the ratio between amount of material of described barium chloride and sodium sulphate is 1:1.
Preferably：In step, described metabisulfite solution will also carry out charcoal absorption decolouring after filtering and impurity removing matter, and bleaching time is 10min, and temperature is 35 DEG C.
Preferably：In step C, described sedimentation separation treatment uses butterfly sedimentation centrifuge.
Preferably or further：In step C, the rotating speed of described sedimentation separation treatment is 8000r/min, and temperature is 35 DEG C.
Preferably：In step D, described drying is dried is dried using spraying, and temperature is 135 DEG C, and mist flow is 100ml/min.
Preferably：In step E, described evaporative crystallization is crystallized using multiple-effect evaporation, and I effect evaporating temperatures are controlled to 125 DEG C, and II effect evaporating temperatures are controlled to 115 DEG C, and III effect evaporating temperatures are controlled to 100 DEG C.
Embodiment 7
On the basis of embodiment 1-4：
Preferably：In step, described barium chloride solution is the barium chloride solution of 0.85mol/L.
Preferably or further：In step, described metabisulfite solution is the aqueous sodium persulfate solution of 0.85mol/L.
Further：In step, the ratio between amount of material of described barium chloride and sodium sulphate is 1:1.
Preferably：In step, described metabisulfite solution will also carry out charcoal absorption decolouring after filtering and impurity removing matter, and bleaching time is 10min, and temperature is 30 DEG C.
Preferably：In step C, described sedimentation separation treatment uses butterfly sedimentation centrifuge.
Preferably or further：In step C, the rotating speed of described sedimentation separation treatment is 6500r/min, and temperature is 30 DEG C.
Preferably：In step D, described drying is dried is dried using spraying, and temperature is 125 DEG C, and mist flow is 100ml/min.
Preferably：In step E, described evaporative crystallization is crystallized using multiple-effect evaporation, and I effect evaporating temperatures are controlled to 120 DEG C, and II effect evaporating temperatures are controlled to 107.5 DEG C, and III effect evaporating temperatures are controlled to 95 DEG C.
Embodiment 8
On the basis of embodiment 1-4：
Preferably：In step, described barium chloride solution is the barium chloride solution of 0.7mol/L.
Preferably or further：In step, described metabisulfite solution is the aqueous sodium persulfate solution of 0.7mol/L.
Further：In step, the ratio between amount of material of described barium chloride and sodium sulphate is 1:1.
Preferably：In step, described metabisulfite solution will also carry out charcoal absorption decolouring after filtering and impurity removing matter, and bleaching time is 10min, and temperature is 27 DEG C.
Preferably：In step C, described sedimentation separation treatment uses butterfly sedimentation centrifuge.
Preferably or further：In step C, the rotating speed of described sedimentation separation treatment is 6000r/min, and temperature is 33 DEG C.
Preferably：In step D, described drying is dried is dried using spraying, and temperature is 130 DEG C, and mist flow is 100ml/min.
Preferably：In step E, described evaporative crystallization is crystallized using multiple-effect evaporation, and I effect evaporating temperatures are controlled to 121 DEG C, and II effect evaporating temperatures are controlled to 113 DEG C, and III effect evaporating temperatures are controlled to 92 DEG C.
Embodiment 9
400 kilograms of technical grade barium chlorides are dissolved in the solution that water is configured to 0.5mol/L in barium chloride dissolving tank, are squeezed into barium chloride holding vessel and is given stockline injecting reactor by barium chloride by the security filter for controlling barium chloride.In glauber salt dissolving tank, by the ratio between the amount 1 of barium chloride and sodium sulphate pure material:The 1 corresponding waste residue glauber salt of dissolving, squeezes into glauber salt holding vessel and injects microreactor to stockline by glauber salt by the security filter for controlling glauber salt.Nano barium sulfate in collecting tank is carried out into separation of solid and liquid by sedimentation-type centrifuge, solid obtains Nacl sodium chloride by after drying, being packaged to be 448 kilograms of nano barium sulfate products, liquid by evaporative crystallization.
Embodiment 10
400 kilograms of technical grade barium chlorides are dissolved in the solution that water is configured to 0.9mol/L in barium chloride dissolving tank, are squeezed into barium chloride holding vessel and is given stockline injecting reactor by barium chloride by the security filter for controlling barium chloride.In glauber salt dissolving tank, by the ratio between the amount 1 of barium chloride and sodium sulphate pure material:The 1 corresponding waste residue glauber salt of dissolving, squeezes into glauber salt holding vessel and injects microreactor to stockline by glauber salt by the security filter for controlling glauber salt.Nano barium sulfate in collecting tank is carried out into separation of solid and liquid by sedimentation-type centrifuge, solid obtains Nacl sodium chloride by after drying, being packaged to be 448 kilograms of nano barium sulfate products, liquid by evaporative crystallization.
Embodiment 11
400 kilograms of technical grade barium chlorides are dissolved in the solution that water is configured to 1.2mol/L in barium chloride dissolving tank, are squeezed into barium chloride holding vessel and is given stockline injecting reactor by barium chloride by the security filter for controlling barium chloride.In glauber salt dissolving tank, by the ratio between the amount 1 of barium chloride and sodium sulphate pure material:The 1 corresponding waste residue glauber salt of dissolving, squeezes into glauber salt holding vessel and injects microreactor to stockline by glauber salt by the security filter for controlling glauber salt.Nano barium sulfate in collecting tank is carried out into separation of solid and liquid by sedimentation-type centrifuge, solid obtains Nacl sodium chloride by after drying, being packaged to be 448 kilograms of nano barium sulfate products, liquid by evaporative crystallization.
Embodiment 12
In embodiment 9-11 after testing, the indices of obtained blanc fixe such as following table.
Barium sulfate detection data table
Claims (9)
1. a kind of method for preparing nano barium sulfate and co-producing sodium chloride, it is characterised in that：Comprise the following steps that：
A, dissolving
Barium chloride and glauber salt are dissolved in different dissolving tanks respectively, barium chloride solution and metabisulfite solution is respectively obtained, impurity therein is then filtered, is respectively stored in different storage tanks；
B, reaction
Barium chloride solution and metabisulfite solution in storage tank is injected separately into microreactor, is reacted at 20-35 DEG C, produce nano barium sulfate, obtain the mixture of nano barium sulfate and sodium chloride solution；
C, separation
The nano barium sulfate and the mixture of sodium chloride solution that step B is obtained carry out sedimentation separation treatment, and nano barium sulfate solid and sodium chloride solution are separated；
D, drying
The isolated nano barium sulfate solids of step C are carried out into drying drying, nano barium sulfate product is obtained；
E, product salt
The isolated sodium chloride solutions of step C are evaporated crystallization, Nacl sodium chloride is obtained.
2. a kind of method for preparing nano barium sulfate and co-producing sodium chloride according to claim 1, it is characterised in that：In step, described barium chloride solution is the barium chloride solution of 0.5-1.2mol/L.
3. a kind of method for preparing nano barium sulfate and co-producing sodium chloride according to claim 1 and 2, it is characterised in that：In step, described metabisulfite solution is the aqueous sodium persulfate solution of 0.5-1.2mol/L.
4. a kind of method for preparing nano barium sulfate and co-producing sodium chloride according to claim 3, it is characterised in that：In step, the ratio between amount of material of described barium chloride and sodium sulphate is 1:1.
5. a kind of method for preparing nano barium sulfate and co-producing sodium chloride according to claim 1, it is characterised in that：In step, described metabisulfite solution will also carry out charcoal absorption decolouring after filtering and impurity removing matter, and bleaching time is 10min, and temperature is 25-35 DEG C.
6. a kind of method for preparing nano barium sulfate and co-producing sodium chloride according to claim 1, it is characterised in that：In step C, described sedimentation separation treatment uses butterfly sedimentation centrifuge.
7. a kind of method for preparing nano barium sulfate and co-producing sodium chloride according to claim 1 or 6, it is characterised in that：In step C, the rotating speed of described sedimentation separation treatment is 5000-8000r/min, and temperature is 25-35 DEG C.
8. a kind of method for preparing nano barium sulfate and co-producing sodium chloride according to claim 1, it is characterised in that：In step D, described drying is dried is dried using spraying, and temperature is 115-135 DEG C, and mist flow is 100ml/min.
9. a kind of method for preparing nano barium sulfate and co-producing sodium chloride according to claim 1, it is characterised in that：In step E, described evaporative crystallization is crystallized using multiple-effect evaporation, and I effect evaporating temperatures are controlled to 115-125 DEG C, and II effect evaporating temperatures are controlled to 100-115 DEG C, and III effect evaporating temperatures are controlled to 90-100 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111977679A (en) * | 2020-07-21 | 2020-11-24 | 江苏阿尔法药业有限公司 | Treatment method of wastewater containing sodium sulfate and sodium chloride |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423239A (en) * | 2008-11-21 | 2009-05-06 | 北京化工大学 | Method for preparing nano barium sulfate with controllable particle size distribution |
| CN102167386A (en) * | 2011-03-16 | 2011-08-31 | 清华大学 | Method for preparing barium sulfate nanoparticles |
| CN102351233A (en) * | 2011-07-22 | 2012-02-15 | 中南大学 | Production process for nanometer barium sulfate |
| CN103073042A (en) * | 2013-02-04 | 2013-05-01 | 河北科技大学 | Preparation method of submicron-grade barium sulfate |
-
2015
- 2015-11-25 CN CN201510826581.9A patent/CN106745152A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423239A (en) * | 2008-11-21 | 2009-05-06 | 北京化工大学 | Method for preparing nano barium sulfate with controllable particle size distribution |
| CN102167386A (en) * | 2011-03-16 | 2011-08-31 | 清华大学 | Method for preparing barium sulfate nanoparticles |
| CN102351233A (en) * | 2011-07-22 | 2012-02-15 | 中南大学 | Production process for nanometer barium sulfate |
| CN103073042A (en) * | 2013-02-04 | 2013-05-01 | 河北科技大学 | Preparation method of submicron-grade barium sulfate |
Non-Patent Citations (4)
| Title |
|---|
| HUI WU ET AL.: "Preparation of Barium Sulfate Nanoparticles in an Interdigital Channel Configuration Micromixer SIMM-V2", 《IND. ENG. CHEM. RES》 * |
| 吴国华等: "撞击流微反应器制备超细硫酸钡研究", 《无机材料学报》 * |
| 赵华等: "微反应器制备纳米硫酸钡研究", 《无机盐工业》 * |
| 陈虞亮等: "纳米硫酸钡的研究进展", 《广东化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111977679A (en) * | 2020-07-21 | 2020-11-24 | 江苏阿尔法药业有限公司 | Treatment method of wastewater containing sodium sulfate and sodium chloride |
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