CN106830046A - A kind of preparation method of calcium chloride solution - Google Patents
A kind of preparation method of calcium chloride solution Download PDFInfo
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- CN106830046A CN106830046A CN201710132505.7A CN201710132505A CN106830046A CN 106830046 A CN106830046 A CN 106830046A CN 201710132505 A CN201710132505 A CN 201710132505A CN 106830046 A CN106830046 A CN 106830046A
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- China
- Prior art keywords
- calcium chloride
- chloride solution
- preparation
- calcium
- hydrochloric acid
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Classifications
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- 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
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/24—Chlorides
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- 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)
- Separation Using Semi-Permeable Membranes (AREA)
- Removal Of Specific Substances (AREA)
Abstract
A kind of preparation method of calcium chloride solution, belongs to chemical field, it is characterized in that being carried out using continuity method；Including calcium carbonate and hydrochloric acid are continuously added in thtee-stage shiplock reactor, calcium chloride solution is generated；Reacting liquid pH value is adjusted in the continuous addition reaction solution by calcium hydroxide；Continuously filtered using three-level, after removing insoluble matter, metal precipitates and colloid, obtain the calcium chloride solution of 38% 42% concentration.Present invention process is simple, and product has the characteristics of purity is high, impurity content is low, and production efficiency improves 40 60% than existing batch process.
Description
Technical field
The present invention relates to a kind of method that concentration is 38%-42% calcium chloride solutions, i.e., given birth to using hydrochloric acid and calcium carbonate
The method for producing calcium chloride solution.
Background technology
Calcium chloride is a kind of important inorganic compound, and its production method mainly has ammonia-soda process and sour calcium method.In general,
Using sour calcium method more than high-quality calcium chloride, i.e., produced by raw material of hydrochloric acid and calcium carbonate.At present, using hydrochloric acid and calcium carbonate
It is main to be produced using batch process when method carries out production calcium chloride.The method has that production efficiency is high, product quality not
Stabilization and the low shortcoming of automaticity, therefore, develop more efficient, more stable Calcium Chloride Production technique particularly significant.
The content of the invention
The purpose of the present invention be directed to batch process production calcium chloride when have production efficiency not high, unstable product quality and
Automaticity shortcoming not high, there is provided a kind of method that continuity method prepares high-purity calcium chloride solution.
A kind of preparation method of calcium chloride solution, it is characterized in that preparing calcium chloride solution using continuity method.
The method that the continuity method prepares calcium chloride solution includes following content：
（1）Third-order reaction：Continuously divide third-order reaction by calcium carbonate and hydrochloric acid addition reactor；After third-order reaction, using pH
Count and the pH value of solution is controlled, pH value is controlled in the range of 4.4-5.8；The concentration of hydrochloric acid is 32%-36%, carbonic acid used
Calcium purity >=97.5%；
（2）Reaction solution is neutralized：It is continuous calcium hydroxide is added into above-mentioned reaction solution in adjust pH value, with remove iron therein, magnesium and
Other slaines；Solution ph after neutralization is 8.5-10.5；
（3）Continuously filtered using three-level, obtain the calcium chloride solution of 38%-42% concentration.
The three-stage filtration is followed successively by centrifugal filtration, plate-frame filtering and ultrafiltration, the filter opening hole of the filter cloth of centrifugal filtration used
Footpath is：700-1000 microns, the aperture in the filter cloth hole of plate-frame filtering is：30-60 microns, the aperture of ultrafiltration filter membrane is：10-40 receives
Rice.
Present invention process is simple, and product has the characteristics of purity is high, impurity content is low, and production efficiency is carried than existing batch process
40-60% high.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Specific embodiment
The preparation method of calcium chloride solution, comprises the steps：
1st, the 98.5% of purity calcium carbonate is added in filling the thtee-stage shiplock reactor that concentration is 32%-36% hydrochloric acid, point
Three-level is reacted, and controls the pH value of third level solution in 4.4-5.8, and optimal pH is 4.5-5.5；
2nd, continuously calcium hydroxide is added in above-mentioned reaction solution, the pH value of reaction solution is adjusted to 8.5-10.5, to remove wherein
Iron, magnesium and other slaines；
3rd, continuously filtered using three-level, after removing insoluble matter, metal precipitates and colloid, obtain the chlorination that 38%-42% concentration is
Calcium solution.
The filter cloth of one ~ three-stage filtration and the diameter in filter membrane hole are respectively：800-900 microns, 35-50 microns and 10-30 is received
Rice, after removing insoluble matter, metal precipitates and colloid, the calcium chloride solution product of the filtrate for obtaining as 38%-42% concentration,
Solid waste can be filled directly.
Explanation：Concentration of the present invention is mass concentration.
Claims (5)
1. a kind of preparation method of calcium chloride solution, it is characterized in that being carried out using continuity method：Including calcium carbonate and hydrochloric acid is continuous
Add in thtee-stage shiplock reactor, generate calcium chloride solution；Reaction solution is adjusted in the continuous addition reaction solution by calcium hydroxide
PH value；Continuously filtered using three-level, after removing insoluble matter, metal precipitates and colloid, the calcium chloride for obtaining 38%-42% concentration is molten
Liquid.
2. a kind of preparation method of calcium chloride solution according to claim 1, it is characterised in that：The hydrochloric acid mass concentration is
32%-36%, pure calcium carbonate >=97.5% used.
3. a kind of preparation method of calcium chloride solution according to claim 1, it is characterised in that：The hydrochloric acid and calcium carbonate three
After order reaction, the pH value of solution is controlled in 4.4-5.8.
4. a kind of preparation method of calcium chloride solution according to claim 1, it is characterised in that：In the calcium hydroxide with after
Solution ph be 8.5-10.5.
5. a kind of preparation method of calcium chloride solution according to claim 1, it is characterised in that：The three-level continuously filters institute
It is respectively with the diameter of filter cloth and filter membrane hole：700-1000 microns, 30-60 microns and 10-40 nanometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132505.7A CN106830046A (en) | 2017-03-07 | 2017-03-07 | A kind of preparation method of calcium chloride solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132505.7A CN106830046A (en) | 2017-03-07 | 2017-03-07 | A kind of preparation method of calcium chloride solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106830046A true CN106830046A (en) | 2017-06-13 |
Family
ID=59138919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710132505.7A Pending CN106830046A (en) | 2017-03-07 | 2017-03-07 | A kind of preparation method of calcium chloride solution |
Country Status (1)
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| CN (1) | CN106830046A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140672A (en) * | 2017-07-24 | 2017-09-08 | 滨州学院 | The method that waste hydrochloric acid containing organosilicon produces anhydrous calcium chloride |
| CN108640142A (en) * | 2018-05-25 | 2018-10-12 | 江苏海企技术工程股份有限公司 | The method that successive reaction produces calcium chloride solution |
| CN108910930A (en) * | 2018-07-04 | 2018-11-30 | 衢州市远方化工厂（普通合伙） | In a kind of energy-efficient calcium hydroxide slurry and the circulation utilization method of mother liquor |
| CN109734162A (en) * | 2018-08-15 | 2019-05-10 | 长沙湘朴科技有限公司 | Calcium chloride solution preparation method for the processing of fluorite ore beneficiation wastewater |
| CN110144456A (en) * | 2019-06-20 | 2019-08-20 | 许瑞高 | The technique that calcium chloride directly leaches ion type rareearth is produced with dissolving with hydrochloric acid calcium salt |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB890257A (en) * | 1959-01-16 | 1962-02-28 | Israel State | Process for the manufacture of magnesium hydroxide |
| CN102317212A (en) * | 2009-02-12 | 2012-01-11 | 索尔维公司 | Preparation of purified calcium chloride |
| CN203540556U (en) * | 2013-10-23 | 2014-04-16 | 凯恩德利(北京)科贸有限公司 | Continuous production reactor for calcium chloride solution |
-
2017
- 2017-03-07 CN CN201710132505.7A patent/CN106830046A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB890257A (en) * | 1959-01-16 | 1962-02-28 | Israel State | Process for the manufacture of magnesium hydroxide |
| CN102317212A (en) * | 2009-02-12 | 2012-01-11 | 索尔维公司 | Preparation of purified calcium chloride |
| CN203540556U (en) * | 2013-10-23 | 2014-04-16 | 凯恩德利(北京)科贸有限公司 | Continuous production reactor for calcium chloride solution |
Non-Patent Citations (1)
| Title |
|---|
| 张淑样: "医药级二水氯化钙工艺研究", 《无机盐工业》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140672A (en) * | 2017-07-24 | 2017-09-08 | 滨州学院 | The method that waste hydrochloric acid containing organosilicon produces anhydrous calcium chloride |
| CN108640142A (en) * | 2018-05-25 | 2018-10-12 | 江苏海企技术工程股份有限公司 | The method that successive reaction produces calcium chloride solution |
| CN108910930A (en) * | 2018-07-04 | 2018-11-30 | 衢州市远方化工厂（普通合伙） | In a kind of energy-efficient calcium hydroxide slurry and the circulation utilization method of mother liquor |
| CN109734162A (en) * | 2018-08-15 | 2019-05-10 | 长沙湘朴科技有限公司 | Calcium chloride solution preparation method for the processing of fluorite ore beneficiation wastewater |
| CN110144456A (en) * | 2019-06-20 | 2019-08-20 | 许瑞高 | The technique that calcium chloride directly leaches ion type rareearth is produced with dissolving with hydrochloric acid calcium salt |
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Application publication date: 20170613 |
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