CN101318683A - Method for preparing strontium carbonate - Google Patents
Method for preparing strontium carbonate Download PDFInfo
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- CN101318683A CN101318683A CNA2008100554295A CN200810055429A CN101318683A CN 101318683 A CN101318683 A CN 101318683A CN A2008100554295 A CNA2008100554295 A CN A2008100554295A CN 200810055429 A CN200810055429 A CN 200810055429A CN 101318683 A CN101318683 A CN 101318683A
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- CN
- China
- Prior art keywords
- strontium
- strontium carbonate
- carbonate powder
- desulfurization
- manufacturing
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Abstract
The invention discloses a method for manufacturing strontium carbonate, comprising the following steps: a. celestite and coal dust are roasted under the condition of a temperature between 850 and 1,000 DEG C; b. rough strontium carbonate is added with water and leached for 2 to 3 times, with 0.5 to 1 hour for each time, and then clarified; c. CO2 in industrial waste gas enters into a thionizer for desulfurization treatment; d. a clear leaching solution in the step b enters into a carbonizer, and the CO2 after the treatment in the step c enters into the carbonizer simultaneously for carbonization reaction; e. strontium carbonate serum obtained in the step d is added with alkali for desulfurization and dehydration, and strontium cakes are obtained; and f. deferrization of the strontium cakes is performed through a magnetic roller. The method not only saves the equipment required for manufacturing the CO2 but also greatly saves the human and material resources. More important, the method changes the waste into the valuable, thereby not only reducing the production cost but also simultaneously avoiding exhaust emission of other chemical enterprises and integrally improving the living environment of people.
Description
Technical field
The present invention relates to a kind of manufacturing process of inorganic salt, specifically a kind of method of making Strontium carbonate powder.
Background technology
Strontium carbonate powder is a kind of important inorganic salt, and it is widely used in light industry, chemical industry, national defence, industries such as electronic industry.In recent years along with the fast development of industries such as colour TV magneticsubstance, market is to the demand of Strontium carbonate powder cumulative year after year especially.At present, mostly be to adopt double decomposition and carbon reduction method to produce Strontium carbonate powder both at home and abroad.Carbon reduction method is subjected to widespread use owing to its Production Flow Chart is short, simple to operate, production cost is relatively low.Traditional carbon reduction method is produced Strontium carbonate powder, and after its technology normally was mixed in proportion lazurite and coal dust or breeze, at high temperature roasting reduction made Strontium carbonate powder again after leaching, carbonization.This technology need prepare CO usually in advance in carbonation process
2Gas is about to that Wingdale mixes by a certain percentage with coal, high-temperature calcination, again with the CO for preparing
2Gas is introduced carbonating tower and is carried out carbonization after the scrubber tower dedusting.This technology is at preparation CO
2The limestone kiln body that not only needs configure dedicated in the gas process, but also need to consume a large amount of high-quality coals, therefore increased the manufacturing cost of Strontium carbonate powder greatly
Summary of the invention
Purpose of the present invention just provides the novel method of the manufacturing Strontium carbonate powder that a kind of technology is more simple and manufacturing cost is lower.
The object of the present invention is achieved like this:
The manufacture method of Strontium carbonate powder of the present invention includes following steps:
A, lazurite, coal dust are mixed with 100: 30～38 weight ratio, put into rotary kiln, under 850～1000 ℃ of conditions, carried out roasting 0.5～1 hour, rough strontium sulfide;
B, rough strontium sulfide is added water extraction 2～3 times, each 0.5～1 hour; Carry settling tank to clarify 25-30 hour for the first time and after the mixing of secondary leaching liquid; Leaching liquid is for the third time used as leaching for the first time;
C, with the CO in the industrial gaseous waste
2Feed thionizer and carry out the desulfurization processing; This operation can be carried out according to conventional sulfur method.
D, the clarifying leaching liquid in the b step is fed carbonating tower, with after treatment CO in the c step
2Feed carbonating tower in the lump, carry out carburizing reagent; CO wherein
2Concentration be controlled at 30～40%;
E, with the Strontium carbonate powder slurries of d step gained, feed add the alkali desulfurization in the digester after, deliver to centrifuge dewatering, the strontium cake;
F, with above-mentioned strontium cake through the deferrization of magnetic roller.
Said industrial gaseous waste preferably adopts chemical fertilizers production waste gas in the inventive method.Chemical fertilizers production enterprise can produce large quantity of exhaust gas when making chemical fertilizer.Contain a large amount of CO in the waste gas
2, (its composition is CO
260～90%, CO＜8%, H
2S＜0.015%, SO
2＜0.20%, also have micro-COS, CS
2Deng sulfurous gas).Make full use of the decarburization waste gas in the chemical fertilizers production enterprise, not only can satisfy the needs of production, also can eliminate the carbon emission of chemical fertilizers production enterprise simultaneously and pollute.Therefore, chemical fertilizers production waste gas is preferred feedstock of the present invention.
Said alkali can be selected sodium hydroxide, yellow soda ash, sodium bicarbonate for use in the inventive method e step, wherein adopts sodium hydroxide products made thereby quality better.So preferred sodium hydroxide of said alkali.
Said alkali in the inventive method e step, its alkaline solution preferred concentration is 10～20%.
Important innovations part of the present invention is, in the whole manufacturing process of Strontium carbonate powder, has omitted CO
2Manufacturing process, and by improving technology and then having made full use of the CO in the industrial gaseous waste
2Thus, the inventive method has not only been saved manufacturing CO
2The equipment of required configuration has also been saved manpower and materials greatly.What is more important the inventive method turns waste into wealth, and has not only reduced manufacturing cost, has also avoided the exhaust gas emission of other chemical enterprises simultaneously, and integral body has been improved people's living environment.
The beneficial effect that the inventive method is saved cost has obtained proof by example once
With the enterprise that produces 50000 tons of Strontium carbonate powders per year is example, by traditional technology, makes CO
2Need three socle ash furnaces, five air compressor machines, three gas blowers, cost needs more than 300 ten thousand yuan.And calcined limestone not only needs to use a large amount of coals, and the quality requirements of used coal is also very high, and is low as its sulfur, and fugitive constituent needs between 3～6%, 3～5 centimeters in piece footpath, and thermal value is greater than 7000 kcal/kg.Therefore, the price of this coal exceeds about 2 times than common coal, and the inventive method is adopted in overall thus estimation, can save about 1,500 ten thousand yuan of funds every year.
Embodiment
The following examples can illustrate in greater detail the present invention, but do not limit the present invention in any form.
Embodiment 1
A, with after 100 tons of lazurites, 36 tons of mixing of coal dust, put into rotary kiln, under 1000 ℃ of conditions, carried out roasting 1 hour, 0.75 ton of rough strontium sulfide;
B, with dolly will make strontium sulfide send into the leaching groove in, add 6 times of water, leach each 1 hour 2 times; Merge 2 times leaching liquid, carry settling tank clarification 25 hours;
C, with the CO in the chemical fertilizers production waste gas
2Feed thionizer and carry out the desulfurization processing;
D, clarifying leaching liquid in the b step is fed carbonating tower, with after treatment CO in the c step
2Feed carbonating tower in the lump, carry out carburizing reagent; CO wherein
2Concentration be controlled at 30～40%;
E, with 50 tons in the Strontium carbonate powder slurries of d step gained, feed in the digester, add the desulfurization of proper amount of sodium hydroxide solution, after the desulfurization, deliver to centrifuge dewatering, the strontium cake;
F, above-mentioned strontium cake is entered oven dry rotating cylinder oven dry,, be finished product after pulverizing again through the deferrization of magnetic roller.
With the Strontium carbonate powder of method for preparing, its every quality index is: SrCO
3〉=96%, CaCO
3≤ 0.1%BaCO
3≤ 1.5%, SO
4 2-≤ 0.4% Fe
2O
3≤ 0.01%, Cl
-≤ 0.01%.
Embodiment 2
A, with after 100 tons of lazurites, 3 tons of mixing of coal dust, put into rotary kiln, under 850 ℃ of conditions, carried out roasting 0.5 hour, rough strontium sulfide;
B, with dolly will make strontium sulfide send into the leaching groove in, add 5 times of water, leach each 1 hour 3 times; Merge leaching liquid the 1st, 2 time, carry settling tank clarification 30 hours; Leaching liquid is for the third time used as leaching for the first time;
C, with the CO in the chemical fertilizers production waste gas
2Feed thionizer and carry out the desulfurization processing;
D, clarifying leaching liquid in the b step is fed carbonating tower, with after treatment CO in the c step
2Feed carbonating tower in the lump, carry out carburizing reagent; CO wherein
2Concentration be controlled at 30～40%;
E, with the Strontium carbonate powder slurries of d step gained, feed that to add concentration in the digester be that 10% sodium hydroxide (concentration expressed in percentage by weight) carries out desulfurization, deliver to centrifuge dewatering after the desulfurization, the strontium cake;
F, above-mentioned strontium cake is entered oven dry rotating cylinder oven dry,, be finished product after pulverizing again through the deferrization of magnetic roller.
With the Strontium carbonate powder of method for preparing, its every quality index is: SrCO
3〉=96%, CaCO
3≤ 0.1%BaCO
3≤ 1.5%, SO
4 2-≤ 0.4% Fe
2O
3≤ 0.01%, Cl
-≤ 0.01%.
Claims (4)
1, a kind of method of making Strontium carbonate powder is characterized in that it may further comprise the steps:
A, lazurite, coal dust are mixed with 100: 30～38 weight ratio, put into rotary kiln, under 850～1000 ℃ of conditions, carried out roasting 0.5～1 hour, rough strontium sulfide;
B, rough strontium sulfide is added water extraction 2～3 times, each 0.5～1 hour; Carry settling tank to clarify 25～30 hours for the first time and after the mixing of secondary leaching liquid; Leaching liquid is for the third time used as leaching for the first time;
C, with the CO in the industrial gaseous waste
2Feed thionizer and carry out the desulfurization processing;
D, clarifying leaching liquid in the b step is fed carbonating tower, with after treatment CO in the c step
2Feed carbonating tower in the lump, carry out carburizing reagent; CO wherein
2Concentration be controlled at 30～40%;
E, with the Strontium carbonate powder slurries of d step gained, feed add the alkali desulfurization in the digester after, deliver to centrifuge dewatering, the strontium cake;
F, with above-mentioned strontium cake through the deferrization of magnetic roller.
2, the method for manufacturing Strontium carbonate powder according to claim 1 is characterized in that said industrial gaseous waste is a chemical fertilizers production waste gas.
3, the method for manufacturing Strontium carbonate powder according to claim 1 and 2 is characterized in that said alkali is sodium hydroxide in the e step.
4, the method for manufacturing Strontium carbonate powder according to claim 3 is characterized in that saidly in the e step adding the alkali desulfurization, and the concentration of its alkaline solution is 10～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100554295A CN101318683A (en) | 2008-07-18 | 2008-07-18 | Method for preparing strontium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100554295A CN101318683A (en) | 2008-07-18 | 2008-07-18 | Method for preparing strontium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101318683A true CN101318683A (en) | 2008-12-10 |
Family
ID=40178994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100554295A Pending CN101318683A (en) | 2008-07-18 | 2008-07-18 | Method for preparing strontium carbonate |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307349A (en) * | 2014-10-24 | 2015-01-28 | 重庆庆龙精细锶盐化工有限公司 | Washable serial type strontium slurry desulfurization system |
| CN104307350A (en) * | 2014-10-24 | 2015-01-28 | 重庆庆龙精细锶盐化工有限公司 | Strontium slurry desulfurization system |
| CN104324601A (en) * | 2014-10-24 | 2015-02-04 | 重庆庆龙精细锶盐化工有限公司 | Energy-saving strontium pulp desulfurization system |
| CN105692674A (en) * | 2016-01-25 | 2016-06-22 | 重庆大足红蝶锶业有限公司 | Industrial production method for strontium carbonate |
| CN106044820A (en) * | 2016-03-29 | 2016-10-26 | 石家庄市正定金石化工有限公司 | Method for producing strontium carbonate from carbon dioxide in exhaust gas |
| CN106115759A (en) * | 2016-06-17 | 2016-11-16 | 石家庄市正定金石化工有限公司 | A kind of continuous carbonization device producing strontium carbonate and technique |
| CN107601543A (en) * | 2017-10-28 | 2018-01-19 | 李志强 | Strontium carbonate and its production method |
| CN110589777A (en) * | 2019-09-27 | 2019-12-20 | 仝六斗 | Processing and extracting process for barite or celestite |
-
2008
- 2008-07-18 CN CNA2008100554295A patent/CN101318683A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307349A (en) * | 2014-10-24 | 2015-01-28 | 重庆庆龙精细锶盐化工有限公司 | Washable serial type strontium slurry desulfurization system |
| CN104307350A (en) * | 2014-10-24 | 2015-01-28 | 重庆庆龙精细锶盐化工有限公司 | Strontium slurry desulfurization system |
| CN104324601A (en) * | 2014-10-24 | 2015-02-04 | 重庆庆龙精细锶盐化工有限公司 | Energy-saving strontium pulp desulfurization system |
| CN104307349B (en) * | 2014-10-24 | 2023-07-25 | 重庆庆龙精细锶盐化工有限公司 | Flushable serial strontium slurry desulfurization system |
| CN104324601B (en) * | 2014-10-24 | 2023-07-25 | 重庆庆龙精细锶盐化工有限公司 | Energy-saving strontium slurry desulfurization system |
| CN105692674A (en) * | 2016-01-25 | 2016-06-22 | 重庆大足红蝶锶业有限公司 | Industrial production method for strontium carbonate |
| CN106044820A (en) * | 2016-03-29 | 2016-10-26 | 石家庄市正定金石化工有限公司 | Method for producing strontium carbonate from carbon dioxide in exhaust gas |
| CN106115759A (en) * | 2016-06-17 | 2016-11-16 | 石家庄市正定金石化工有限公司 | A kind of continuous carbonization device producing strontium carbonate and technique |
| CN107601543A (en) * | 2017-10-28 | 2018-01-19 | 李志强 | Strontium carbonate and its production method |
| CN107601543B (en) * | 2017-10-28 | 2018-11-23 | 公碧燕 | Strontium carbonate and its production method |
| CN110589777A (en) * | 2019-09-27 | 2019-12-20 | 仝六斗 | Processing and extracting process for barite or celestite |
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Open date: 20081210 |