CN102730735A - Purification method for strontium carbonate - Google Patents
Purification method for strontium carbonate Download PDFInfo
- Publication number
- CN102730735A CN102730735A CN201210200397XA CN201210200397A CN102730735A CN 102730735 A CN102730735 A CN 102730735A CN 201210200397X A CN201210200397X A CN 201210200397XA CN 201210200397 A CN201210200397 A CN 201210200397A CN 102730735 A CN102730735 A CN 102730735A
- Authority
- CN
- China
- Prior art keywords
- strontium carbonate
- strontium
- carbonate powder
- temperature
- purification
- 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
Links
Images
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a purification method for strontium carbonate, belonging to the technical field of chemical industry. According to the method, industrial strontium carbonate is used as a raw material; barium and iron impurities are removed from strontium carbonate successively and high purity strontium hydroxide crystals are obtained after three times of crystallization; then the high purity strontium hydroxide crystals are dissolved at a constant temperature; food grade carbon dioxide is blown into the dissolved crystals at a constant speed for a synthesis reaction so as to obtain strontium carbonate slurry; and the strontium carbonate slurry undergoes filtration, drying at a constant temperature, crushing and screening so as to obtain desired calcium carbonate. Compared with traditional production processes for strontium carbonate by using an ammonium bicarbonate method, the purification method provided in the invention has the following advantages: produced effluent is deionized water, which enables pollution of ammonia nitrogen to environment to be avoided; process flow is simple and controllable, and the whole process is carried out in a closed environment, thereby preventing external pollution powder; and finally prepared strontium carbonate has a small particle size, good dispersibility, high purity and activity, etc., and can meet increasingly strict requirements of electronic ceramic elements.
Description
Technical field
The present invention relates to chemical technology field, especially relate to a kind of method of purification of Strontium carbonate powder.
Background technology
At present, electronic apparatus and communication equipment system manufacturer have proposed more and more stricter requirement to the safety of various electronic devices and components.The easy dispersive starting material of high pure and ultra-fine electronic-grade become makes key and core ultra-fine, ultra-thin, the high performance electronic ceramic components.Strontium carbonate powder is as electronic ceramics element main material, because each side, granularity is big on the one hand for the Strontium carbonate powder that market provides; Serious agglomeration; Medium particle diameter (D50) is big, and is dispersed bad, and the Strontium carbonate powder purity that provides of market is on the low side on the other hand; Be merely about 99%, satisfied not the increasingly high requirement of electron trade.
Summary of the invention
Not high in order to solve existing Strontium carbonate powder purity, particle diameter is big, serious agglomeration be unfavorable for problem such as dispersion.The present invention proposes a kind of method of purification of Strontium carbonate powder, and the Strontium carbonate powder that this method of purification prepares has narrow particle size distribution, and percent crystallinity is high, is prone to advantages such as dispersion.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is:
A kind of method of purification of Strontium carbonate powder comprises the steps:
Step 2. the strontium chloride solution in the step 1 through three crystallizations, is got the strontium hydroxide crystal;
Step 3. gained strontium hydroxide crystal in the step 2 is dissolved at 80 ± 1.0 ℃ of following constant temperature of first temperature; Blasting at the uniform velocity, flow is the carbonic acid gas of 60-90Kg/h and keeps carrying out building-up reactions under said first steady temperature; Detection reaction solution pH value when being 6-6.5; Promptly get needed Strontium carbonate powder slurry, the chemical equation of this reaction is as follows:
Sr(OH)
2+CO
2＝SrCO
3↓+H
2O
Step 4. step 3 gained Strontium carbonate powder slurry is obtained the Strontium carbonate powder filter cake through press filtration, said Strontium carbonate powder filter cake is put into baking oven,, take out and pulverize, cross screen cloth, promptly obtain needed Strontium carbonate powder at 310 ± 8 ℃ of following constant temperature dryings of second temperature.
Preferably, the acidic solution of said chloride element is a technical hydrochloric acid, and said oxygenant is a ydrogen peroxide 50, and said constant temperature time is 15-60 minute, and said basic soln is a sodium hydroxide solution.
Preferably, said three subcrystalline concrete process steps are:
A. strontium chloride in the said step 1 and sodium hydroxide mixing solutions are added crystallizer simultaneously, stir, the logical water quench of chuck or coil pipe gets the primary crystallization body to room temperature;
B. open the whizzer switch, gained primary crystallization body and function centrifuge dewatering among the said step a is dried, throw into dissolving pan and add water through dissolving; Be heated to temperature 90-100 ℃, the deposition decontamination is injected crystallizer with the gained clear liquid; The logical water quench of chuck or coil pipe gets the secondary crystal body to room temperature;
C. open the whizzer switch, gained secondary crystal body and function centrifuge dewatering among the said step b is dried, throw into dissolving pan and be dissolved in water; Be heated to temperature 90-100 ℃; The deposition decontamination is injected crystallizer, crystallisation by cooling with the gained clear liquid; Again with centrifuge dewatering dry three xln, be the strontium hydroxide crystal.
Preferably, said first temperature is 80 ± 0.5 ℃, and the said carbonic acid gas that blasts is a food-grade carbon-dioxide, and said second temperature is 310 ± 5 ℃, and the order number of said screen cloth is the 30-100 order.
The invention has the beneficial effects as follows:
1, this invention makes things convenient for process for processing, can carry out industriallization, and industrialization continuously produces large batch of Strontium carbonate powder.
2, this invention Strontium carbonate powder purity of producing reaches more than 99.8%, and medium particle diameter (D50) is less than 0.5 micron, specific surface area 4-9m
2/ g is adjustable, and purity reaches 99.8% and is high-purity, and particle diameter is to be ultra-fine below 5 microns, i.e. the Strontium carbonate powder that this invention is produced is the Strontium carbonate powder of high pure and ultra-fine, can satisfy the requirement of hyundai electronics industry.
3, the Strontium carbonate powder narrow diameter distribution of this invention production, percent crystallinity is high, is prone to disperse.
Description of drawings
Fig. 1 is the Strontium carbonate powder process flow sheet of preparation in the embodiment of the invention 2.
Fig. 2 is that the Strontium carbonate powder laser particle analyzer of preparation in the embodiment of the invention 2 detects figure.
Fig. 3 is that the Strontium carbonate powder ESEM of preparation in the embodiment of the invention 2 detects figure.
Embodiment
Instance of the present invention is can not limit the present invention to explanation of the present invention, in implication suitable with the present invention and any change and the adjustment in the scope, all should think within the scope of the invention.Below in conjunction with embodiment the present invention is further specified.
The method of purification of 1 one kinds of Strontium carbonate powders of embodiment may further comprise the steps:
A. remove barium impurity: industrial magnesium strontium (purity is about 95%) is used industrial dissolving with hydrochloric acid, and adding weight proportion is the sulfuric acid (H of 6%-10%
2SO
4), remove barium impurity, the acidic solution of said chloride element comprises technical hydrochloric acid and hypochlorous acid etc., preferred technical hydrochloric acid;
B. remove iron contamination: adding weight proportion is 6%-10% left and right sides ydrogen peroxide 50 (H
2O
2); Boiled 15-60 minute; Add liquid sodium hydroxide solution (NaOH) adjusting pH value and remove iron contamination to 7.0-7.5, said oxygenant comprises ydrogen peroxide 50 and sodiumperoxide etc., preferred ydrogen peroxide 50; Said basic soln comprises sodium hydroxide solution, potassium hydroxide solution and aqua calcis etc., preferred sodium hydroxide solution;
Step 2. adds crystallizer simultaneously with ebullient strontium chloride in the step 1 and technical grade liquid hydrogen sodium oxide mixing solutions, stirs, and chuck or coil pipe lead to water quench to room temperature (being commonly defined as 25 ℃), gets the primary crystallization body;
Step 3. is opened the whizzer switch; Gained primary crystallization body and function centrifuge dewatering in the said step 2 is dried, throw into dissolving pan and add water, boil through dissolving; The deposition decontamination; The gained clear liquid is injected crystallizer, and chuck or coil pipe lead to water quench to room temperature (being commonly defined as 25 ℃), get the secondary crystal body;
Step 4. is opened the whizzer switch, and gained secondary crystal body and function centrifuge dewatering in the said step 3 is dried, and throws into dissolving pan and is dissolved in water; Boil; The deposition decontamination is injected crystallizer, crystallisation by cooling with the gained clear liquid; Again with centrifuge dewatering dry three xln, be High Purity Hydrogen strontium oxide crystal;
Step 5. is opened the stirred pot power switch; Under the condition of continuously stirring; Preparation gained High Purity Hydrogen strontium oxide crystal and a certain amount of deionized water in the step 4 are put into said stirred pot,, three xln are dissolved in the deionized water through coil pipe or chuck heating; Accurately the controlled liq temperature is at 79 ℃, and this moment, liquid hydrogen strontium oxide and solid-state strontium hydroxide existed simultaneously;
Step 6. in simultaneous liquid hydrogen strontium oxide that said step 5 obtains and solid-state strontium hydroxide, feed food-grade carbon-dioxide at the uniform velocity flow be that 60-90Kg/h carries out building-up reactions; And through bestowing water coolant; Control reaction process temperature is 79 ± 0.5 ℃ temperature fluctuation; The liquid hydrogen strontium oxide generates Strontium carbonate powder, the concentration of the continuous liquid make-up strontium hydroxide of strontium hydroxide solid, and reaction constantly generates Strontium carbonate powder.The pH value of detection reaction liquid when the pH of reaction solution value is 6.0-6.5, is the building-up reactions terminal point, obtains the Strontium carbonate powder slurry; Reaction is expressed as follows with chemical equation in the solution:
Sr(OH)
2+CO
2＝SrCO
3↓+H
2O
Step 7. is put into the pressure filter press filtration with preparation gained Strontium carbonate powder slurry in the step 6 and is obtained the high-purity strontium carbonate filter cake; Put it into baking oven then in 310 ± 5 ℃ of constant temperature dryings, when oven dry to its moisture content less than 0.1% the time, take out and pulverize; Cross the 30-100 eye mesh screen, promptly obtain Strontium carbonate powder.
The method of purification of 2 one kinds of Strontium carbonate powders of embodiment may further comprise the steps:
A. remove barium impurity: industrial magnesium strontium (purity is about 95%) is used industrial dissolving with hydrochloric acid, and adding weight proportion is the sulfuric acid (H of 6%-10%
2SO
4), remove barium impurity, the acidic solution of said chloride element comprises technical hydrochloric acid and hypochlorous acid etc., preferred technical hydrochloric acid;
B. remove iron contamination: adding weight proportion is 6%-10% left and right sides ydrogen peroxide 50 (H
2O
2); Boiled 15-60 minute; Add liquid sodium hydroxide solution (NaOH) adjusting pH value and remove iron contamination to 7.0-7.5, said oxygenant comprises ydrogen peroxide 50 and sodiumperoxide etc., preferred ydrogen peroxide 50; Said basic soln comprises sodium hydroxide solution, potassium hydroxide solution and aqua calcis etc., preferred sodium hydroxide solution;
Step 2. adds crystallizer simultaneously with ebullient strontium chloride in the step 1 and technical grade liquid hydrogen sodium oxide mixing solutions, stirs, and chuck or coil pipe lead to water quench to room temperature (being commonly defined as 25 ℃), gets the primary crystallization body;
Step 3. is opened the whizzer switch; Gained primary crystallization body and function centrifuge dewatering in the said step 2 is dried, throw into dissolving pan and add water, boil through dissolving; The deposition decontamination; The gained clear liquid is injected crystallizer, and chuck or coil pipe lead to water quench to room temperature (being commonly defined as 25 ℃), get the secondary crystal body;
Step 4. is opened the whizzer switch, and gained secondary crystal body and function centrifuge dewatering in the said step 3 is dried, and throws into dissolving pan and is dissolved in water; Boil; The deposition decontamination is injected crystallizer, crystallisation by cooling with the gained clear liquid; Again with centrifuge dewatering dry three xln, be High Purity Hydrogen strontium oxide crystal;
Step 5. is opened the stirred pot power switch; Under the condition of continuously stirring; Preparation gained High Purity Hydrogen strontium oxide crystal and a certain amount of deionized water in the step 4 are put into said stirred pot,, three xln are dissolved in the deionized water through coil pipe or chuck heating; Accurately the controlled liq temperature is at 80 ℃, and this moment, liquid hydrogen strontium oxide and solid-state strontium hydroxide existed simultaneously;
Step 6. in simultaneous liquid hydrogen strontium oxide that said step 5 obtains and solid-state strontium hydroxide, feed food-grade carbon-dioxide at the uniform velocity flow be that 60-90Kg/h carries out building-up reactions; And through bestowing water coolant; Control reaction process temperature is 80 ± 0.5 ℃ temperature fluctuation; The liquid hydrogen strontium oxide generates Strontium carbonate powder, the concentration of the continuous liquid make-up strontium hydroxide of strontium hydroxide solid, and reaction constantly generates Strontium carbonate powder.The pH value of detection reaction liquid when the pH of reaction solution value is 6.0-6.5, is the building-up reactions terminal point, obtains the Strontium carbonate powder slurry; Reaction is expressed as follows with chemical equation in the solution:
Sr(OH)
2+CO
2＝SrCO
3↓+H
2O
Step 7. is put into the pressure filter press filtration with preparation gained Strontium carbonate powder slurry in the step 6 and is obtained the high-purity strontium carbonate filter cake; Put it into baking oven then in 310 ± 5 ℃ of constant temperature dryings, when oven dry to its moisture content less than 0.1% the time, take out and pulverize; Cross the 30-100 eye mesh screen, promptly obtain Strontium carbonate powder.
The method of purification of 3 one kinds of Strontium carbonate powders of embodiment may further comprise the steps:
A. remove barium impurity: industrial magnesium strontium (purity is about 95%) is used industrial dissolving with hydrochloric acid, and adding weight proportion is the sulfuric acid (H of 6%-10%
2SO
4), remove barium impurity, the acidic solution of said chloride element comprises technical hydrochloric acid and hypochlorous acid etc., preferred technical hydrochloric acid;
B. remove iron contamination: adding weight proportion is 6%-10% left and right sides ydrogen peroxide 50 (H
2O
2); Boiled 15-60 minute; Add liquid sodium hydroxide solution (NaOH) adjusting pH value and remove iron contamination to 7.0-7.5, said oxygenant comprises ydrogen peroxide 50 and sodiumperoxide etc., preferred ydrogen peroxide 50; Said basic soln comprises sodium hydroxide solution, potassium hydroxide solution and aqua calcis etc., preferred sodium hydroxide solution;
Step 2. adds crystallizer simultaneously with ebullient strontium chloride in the step 1 and technical grade liquid hydrogen sodium oxide mixing solutions, stirs, and chuck or coil pipe lead to water quench to room temperature (being commonly defined as 25 ℃), gets the primary crystallization body;
Step 3. is opened the whizzer switch; Gained primary crystallization body and function centrifuge dewatering in the said step 2 is dried, throw into dissolving pan and add water, boil through dissolving; The deposition decontamination; The gained clear liquid is injected crystallizer, and chuck or coil pipe lead to water quench to room temperature (being commonly defined as 25 ℃), get the secondary crystal body;
Step 4. is opened the whizzer switch, and gained secondary crystal body and function centrifuge dewatering in the said step 3 is dried, and throws into dissolving pan and is dissolved in water; Boil; The deposition decontamination is injected crystallizer, crystallisation by cooling with the gained clear liquid; Again with centrifuge dewatering dry three xln, be High Purity Hydrogen strontium oxide crystal;
Step 5. is opened the stirred pot power switch; Under the condition of continuously stirring; Preparation gained High Purity Hydrogen strontium oxide crystal and a certain amount of deionized water in the step 4 are put into said stirred pot,, three xln are dissolved in the deionized water through coil pipe or chuck heating; Accurately the controlled liq temperature is at 81 ℃, and this moment, liquid hydrogen strontium oxide and solid-state strontium hydroxide existed simultaneously;
Step 6. in simultaneous liquid hydrogen strontium oxide that said step 5 obtains and solid-state strontium hydroxide, feed food-grade carbon-dioxide at the uniform velocity flow be that 60-90Kg/h carries out building-up reactions; And through bestowing water coolant; Control reaction process temperature is 81 ± 0.5 ℃ temperature fluctuation; The liquid hydrogen strontium oxide generates Strontium carbonate powder, the concentration of the continuous liquid make-up strontium hydroxide of strontium hydroxide solid, and reaction constantly generates Strontium carbonate powder.The pH value of detection reaction liquid when the pH of reaction solution value is 6.0-6.5, is the building-up reactions terminal point, obtains the Strontium carbonate powder slurry; Reaction is expressed as follows with chemical equation in the solution:
Sr(OH)
2+CO
2＝SrCO
3↓+H
2O
Step 7. is put into the pressure filter press filtration with preparation gained Strontium carbonate powder slurry in the step 6 and is obtained the high-purity strontium carbonate filter cake; Put it into baking oven then in 310 ± 5 ℃ of constant temperature dryings, when oven dry to its moisture content less than 0.1% the time, take out and pulverize; Cross the 30-100 eye mesh screen, promptly obtain Strontium carbonate powder.
The Strontium carbonate powder laser particle analyzer detection figure of Fig. 2 for preparing in the embodiment of the invention as can beappreciated from fig. 2, calculates from 0.040 μ m to 2000 μ m; Volume 100%; MV 0.412 μ m, standard deviation (S.D) 0.087 μ m, intermediate value 0.409 μ m; RSD (C.V) 21.1%, the granularity table sees table 1 for details.
Table 1
| ％＜ | 10 | 25 | 50 | 75 | 90 |
| Granularity μ m | 0.299 | 0.348 | 0.409 | 0.473 | 0.530 |
This Strontium carbonate powder granularity is very little, and it is very narrow, very concentrated to distribute, and good dispersivity does not have and reunites.
The Strontium carbonate powder ESEM detection figure of Fig. 3 for preparing in the embodiment of the invention; The Strontium carbonate powder better crystallinity degree that as can be seen from Figure 3 prepares among this embodiment; Do not have and reunite; Mainly be that process implementing process synthesis temperature is constant, feed carbon dioxide flow at the uniform velocity, make that the Strontium carbonate powder uniform particles is separated out, synchronous growth.
The high pure and ultra-fine Strontium carbonate powder of the present invention's preparation has narrow particle size distribution; Percent crystallinity is high; Be prone to advantages such as dispersion; Can satisfy that hyundai electronics ceramic components industry is ultra-fine, ultra-thin, the requirement of high pressure, heavy body, for example can be applicable in multilayer monolith electrical condenser (MLCC) electrodes in base metal high-frequency porcelain (COG) and high-end posistor (PTC) porcelain.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for purification of a Strontium carbonate powder comprises the steps:
Step 1. industrial magnesium strontium is with the acid leach solution of chloride element; Add sulfuric acid and remove barium impurity, add oxygenant subsequently, be heated to temperature 90-100 ℃; Constant temperature 10-75 minute; Adding basic soln adjusting pH value subsequently is 7.0 ± 0.5 o'clock, removes iron contamination, and press filtration is removed slag and obtained strontium chloride solution;
Step 2. with the strontium chloride in the step 1 and sodium hydroxide mixing solutions through three crystallizations, the strontium hydroxide crystal;
Step 3. gained strontium hydroxide crystal in the step 2 is dissolved at 80 ± 1.0 ℃ of following constant temperature of first temperature; Blasting at the uniform velocity, flow is the carbonic acid gas of 60-90Kg/h and keeps carrying out building-up reactions under said first temperature; Detection reaction solution pH value when being 6-6.5; Promptly get needed Strontium carbonate powder slurry, the chemical equation of this reaction is as follows:
Sr(OH)
2+CO
2＝SrCO
3↓+H
2O
Step 4. step 3 gained Strontium carbonate powder slurry is obtained the Strontium carbonate powder filter cake through press filtration, said Strontium carbonate powder filter cake is put into baking oven,, take out and pulverize, cross screen cloth, promptly obtain needed Strontium carbonate powder at 310 ± 8 ℃ of following constant temperature dryings of second temperature.
2. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: the acidic solution of said chloride element is a technical hydrochloric acid.
3. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: said oxygenant is a ydrogen peroxide 50.
4. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: constant temperature time is 15-60 minute in the said step 1.
5. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: said basic soln is a sodium hydroxide solution.
6. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: said three subcrystalline concrete process steps are:
A. strontium chloride in the said step 1 and sodium hydroxide mixing solutions are added crystallizer simultaneously, stir, the logical water quench of chuck or coil pipe gets the primary crystallization body to room temperature;
B. open the whizzer switch, gained primary crystallization body and function centrifuge dewatering among the said step a is dried, throw into dissolving pan and add water through dissolving; Be heated to temperature 90-100 ℃, the deposition decontamination is injected crystallizer with the gained clear liquid; The logical water quench of chuck or coil pipe gets the secondary crystal body to room temperature;
C. open the whizzer switch, gained secondary crystal body and function centrifuge dewatering among the said step b is dried, throw into dissolving pan and be dissolved in water; Be heated to temperature 90-100 ℃; The deposition decontamination is injected crystallizer, crystallisation by cooling with the gained clear liquid; Again with centrifuge dewatering dry three xln, be the strontium hydroxide crystal;
7. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: said first temperature is 80 ± 0.5 ℃.
8. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: the said carbonic acid gas that blasts is a food-grade carbon-dioxide.
9. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: said second temperature is 310 ± 5 ℃.
10. the method for purification of Strontium carbonate powder according to claim 1, it is characterized in that: the order number of said screen cloth is the 30-100 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210200397XA CN102730735A (en) | 2012-06-18 | 2012-06-18 | Purification method for strontium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210200397XA CN102730735A (en) | 2012-06-18 | 2012-06-18 | Purification method for strontium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102730735A true CN102730735A (en) | 2012-10-17 |
Family
ID=46987141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210200397XA Pending CN102730735A (en) | 2012-06-18 | 2012-06-18 | Purification method for strontium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102730735A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864125A (en) * | 2014-01-29 | 2014-06-18 | 南京金焰锶业有限公司 | Automatic preparation device and method for carbonate |
| CN104263950A (en) * | 2014-09-22 | 2015-01-07 | 重庆新申世纪化工有限公司 | Method for efficiently separating strontium and aluminum from metal strontium residues to prepare strontium salt and aluminum salt |
| CN107381612A (en) * | 2017-09-11 | 2017-11-24 | 西南科技大学 | For the preparation method for the strontium carbonate for producing glass substrate |
| CN109133134A (en) * | 2018-11-05 | 2019-01-04 | 中国科学院青海盐湖研究所 | A kind of preparation method of high-purity strontium hydroxide |
| CN109157981A (en) * | 2018-09-17 | 2019-01-08 | 中国核动力研究设计院 | The minimizing technology and device of aluminium in a kind of radioactivity strontium chloride solution |
| CN112908676A (en) * | 2021-02-05 | 2021-06-04 | 浙江安特磁材股份有限公司 | Permanent magnetic ferrite magnetic powder for dry pressing molding and preparation method thereof |
| CN114380315A (en) * | 2021-09-22 | 2022-04-22 | 湖南新绿方药业有限公司 | Purification method and production equipment of medicinal calcium carbonate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3743691A (en) * | 1971-06-21 | 1973-07-03 | Kaiser Aluminium Chem Corp | Purification of strontium carbonate |
| CN102234126A (en) * | 2010-05-07 | 2011-11-09 | 中国科学院电子学研究所 | Synthesizing method of nano-sized granular barium carbonate, strontium carbonate, and calcium carbonate ternary salt |
-
2012
- 2012-06-18 CN CN201210200397XA patent/CN102730735A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3743691A (en) * | 1971-06-21 | 1973-07-03 | Kaiser Aluminium Chem Corp | Purification of strontium carbonate |
| CN102234126A (en) * | 2010-05-07 | 2011-11-09 | 中国科学院电子学研究所 | Synthesizing method of nano-sized granular barium carbonate, strontium carbonate, and calcium carbonate ternary salt |
Non-Patent Citations (6)
| Title |
|---|
| 《化工矿物与加工》 20021231 徐旺生等 "由天青石制高纯碳酸锶新工艺研究" 第4-7页 1-10 , 第5期 * |
| 《无机盐工业》 20040731 刘相果等 "一步法制备高纯碳酸锶的研究" 第24-26页 1-10 第36卷, 第4期 * |
| 《江苏化工》 19921231 毛勤庚 "高纯度碳酸锶的制备" 第20-22页 1-10 , 第1期 * |
| 刘相果等: ""一步法制备高纯碳酸锶的研究"", 《无机盐工业》 * |
| 徐旺生等: ""由天青石制高纯碳酸锶新工艺研究"", 《化工矿物与加工》 * |
| 毛勤庚: ""高纯度碳酸锶的制备"", 《江苏化工》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864125A (en) * | 2014-01-29 | 2014-06-18 | 南京金焰锶业有限公司 | Automatic preparation device and method for carbonate |
| CN103864125B (en) * | 2014-01-29 | 2015-08-12 | 南京金焰锶业有限公司 | A kind of automatization preparation facilities of carbonate and method |
| CN104263950A (en) * | 2014-09-22 | 2015-01-07 | 重庆新申世纪化工有限公司 | Method for efficiently separating strontium and aluminum from metal strontium residues to prepare strontium salt and aluminum salt |
| CN107381612A (en) * | 2017-09-11 | 2017-11-24 | 西南科技大学 | For the preparation method for the strontium carbonate for producing glass substrate |
| CN107381612B (en) * | 2017-09-11 | 2019-01-22 | 西南科技大学 | For producing the preparation method of the strontium carbonate of glass substrate |
| CN109157981A (en) * | 2018-09-17 | 2019-01-08 | 中国核动力研究设计院 | The minimizing technology and device of aluminium in a kind of radioactivity strontium chloride solution |
| CN109157981B (en) * | 2018-09-17 | 2020-03-17 | 中国核动力研究设计院 | Method and device for removing aluminum in radioactive strontium chloride solution |
| CN109133134A (en) * | 2018-11-05 | 2019-01-04 | 中国科学院青海盐湖研究所 | A kind of preparation method of high-purity strontium hydroxide |
| CN112908676A (en) * | 2021-02-05 | 2021-06-04 | 浙江安特磁材股份有限公司 | Permanent magnetic ferrite magnetic powder for dry pressing molding and preparation method thereof |
| CN114380315A (en) * | 2021-09-22 | 2022-04-22 | 湖南新绿方药业有限公司 | Purification method and production equipment of medicinal calcium carbonate |
| CN114380315B (en) * | 2021-09-22 | 2024-01-26 | 湖南新绿方药业有限公司 | Purification method and production equipment of medicinal calcium carbonate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102730735A (en) | Purification method for strontium carbonate | |
| CN102730734B (en) | Purification method for calcium carbonate | |
| CN108117055B (en) | Preparation method and production device of battery-grade iron phosphate | |
| US10329163B2 (en) | Nickel oxide micropowder and method for producing same | |
| CN103100722B (en) | Preparation method of high tap density monodisperse silver powder | |
| KR20080078864A (en) | Methods for production of metal oxide nano particles, and nano particles and preparations produced thereby | |
| CN102627454B (en) | Preparation method for indium tin oxide (ITO) powder and preparation method for ITO sintering body | |
| CN102554265A (en) | Preparation method of mono-dispersed highly crystalline silver powder with adjustable particle size | |
| KR20080080350A (en) | Methods for production of metal oxide nano particles with controlled properties, and nano particles and preparations produced thereby | |
| CN107902690B (en) | Preparation method of micron-sized tin dioxide | |
| JP5862919B2 (en) | Nickel oxide fine powder and method for producing the same | |
| JP6159306B2 (en) | Nickel oxide powder | |
| CN109721096B (en) | Device and method for preparing high-purity barium titanate | |
| JP2010089988A (en) | Nickel oxide fine powder and method of producing the same | |
| CN103482679A (en) | Aluminum zinc oxide (AZO) nano powder and preparation method of AZO sintered bodies | |
| JP5733101B2 (en) | Method for producing nickel oxide powder | |
| CN104445416A (en) | Preparation method of uniform sodium-doped ammonium paratungstate and/or yellow tungsten oxide | |
| JP2011225395A (en) | Nickel oxide fine powder, and method for producing the same | |
| JP2018024535A (en) | Production method of nickel oxide fine powder | |
| JP2011042541A (en) | Nickel oxide fine powder and method for producing the same | |
| JP5790292B2 (en) | Method for producing nickel oxide powder | |
| CN113336548A (en) | Preparation method of yttrium oxide spraying powder | |
| CN112357964A (en) | Preparation method of battery-grade trimanganese tetroxide | |
| CN111299607B (en) | Preparation method of 5N-level micron conductive gold ball | |
| CN109650421B (en) | Method for reducing sodium content of aluminum hydroxide micropowder by forced mixed distribution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121017 |