CN1070165A - A kind of method of producing strontium hydroxide solution - Google Patents
A kind of method of producing strontium hydroxide solution Download PDFInfo
- Publication number
- CN1070165A CN1070165A CN 92108261 CN92108261A CN1070165A CN 1070165 A CN1070165 A CN 1070165A CN 92108261 CN92108261 CN 92108261 CN 92108261 A CN92108261 A CN 92108261A CN 1070165 A CN1070165 A CN 1070165A
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- CN
- China
- Prior art keywords
- hydroxide solution
- strontium hydroxide
- strontium
- coke
- alumina
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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
- C01F11/02—Oxides or hydroxides
- C01F11/08—Oxides or hydroxides by reduction of sulfates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of method of producing strontium hydroxide solution, it is raw material with the celestite powder, and coke or coal dust are reductive agent, and high-alumina cement is a binding agent, is mixed in proportion Hou Jiashui and makes ball; The ball material is calcined through converter under the condition of control reductive agent content, makes celestite powder be converted into strontium oxide and forges material, forges material through digestion, separates and makes strontium hydroxide solution.This solution can be used for producing its crystal and all kinds of strontium salt.Flow process of the present invention is short, and technology advanced person overcome ordinary method production strontium hydroxide solution and maybe need consume industrial chemicals such as a large amount of caustic soda, or needed high temperature and resistant to elevated temperatures equipment, and technical process is long, cost, the more high disadvantage of energy consumption.
Description
The invention belongs to a kind of method of producing strontium hydroxide solution, particularly a kind of is the method for raw material production strontium hydroxide solution with the lazurite.
Strontium hydroxide solution is a raw material of producing strontium hydroxide crystal and a series of strontium salt.That is: its direct crystallisation by cooling just can be made the strontium hydroxide crystal; In solution, add hydrochloric acid and can make strontium chloride; Add nitric acid and can make strontium nitrate; Just can make the extremely wide Strontium carbonate powder of purposes and feed carbonic acid gas or add precipitation agent.Method with reddish black masonry raw material production strontium hydroxide (solution) mainly contains three kinds at present, that is: double decomposition, thermal decomposition method and carbon reduction method.So-called double decomposition is to utilize yellow soda ash or volatile salt as the metathesis agent, by following reaction:
Make thick Strontium carbonate powder, again through calcining, water logging etc., thereby produce strontium hydroxide solution.Japan's on May 15th, 1984 disclosed " highly pure strontium carbonate manufacture method ", (publication number is: aforesaid method was adopted in patent application clear 59-83934) exactly.It is celestite powder and soda ash solution to be carried out metathesis make thick Strontium carbonate powder, adds 10% coke again in the thick Strontium carbonate powder.At 1000 °～1100 ℃ temperature lower calcinations, make strontium hydroxide and forge material, again through water logging, separate strontium hydroxide solution (further handle this solution and promptly make Strontium carbonate powder).This method is decomposition agent because industrial chemicals such as employing soda ash are write in reply.Therefore not only cost is higher, and technical process is also longer.And be CN1030561A at notification number, denomination of invention is for disclosing a kind of method of producing feed hydrogen strontium oxide in the middle of it by thermal decomposition method in " the nuisanceless method for preparing Strontium carbonate powder and strontium compound " literary composition.This method be with celestite powder be broken into diameter be about 30mm the grain ore deposit, under 〉=1600 ℃ high temperature, in pyrolysis furnace with SrSO
4Be decomposed into SrO, that is:
SrSO
4(1600℃)/() SrO+SO
2（3）
And then will forge material water logging and make strontium hydroxide solution.Not only there is the energy consumption height in this method, and the material of pyrolysis furnace requires high defective; And pure SrSO
4Fusing point be 1605 ℃ (see Mellor inorganic chemistry volume, P794), lazurite be owing to contain other impurity, and its fusing point is also far below 1600 ℃.Lazurite will inevitably touching under 〉=1600 ℃ of temperature, causes to decompose to be difficult for carrying out; According to calculation of thermodynamics, only be about 0.058 1600 ℃ of equilibrium constant K values as can be known simultaneously, this has proved also that theoretically this reacts difficulty and carries out (general requirement K＞1).And publishing by Chemical Industry Press, Tianjin chemical research institute compile " inorganic chemicals industry handbook (version in 1981) volume two has been put down in writing a kind of method of utilizing carbon reduction method to produce strontium hydroxide among the P644.After this method is utilized lazurite to add coke to be reduced to strontium sulfide, add caustic soda output strontium hydroxide again, its reaction is pressed:
Mode carry out.Forge material and after water logging, get SrS solution, in this solution, add caustic soda again, that is:
Analyse through cooling and to isolate the strontium hydroxide crystal, this crystal is again through the water-soluble strontium hydroxide solution that promptly gets.This method not only need expend caustic soda, and can find out the SrSO of 1mol from reaction formula
4At least to add the above fixed carbon C of 2mol, could be with the SrSO in the lazurite
4Be reduced to SrS.In fact, in actual production, carbon will lose during the reduction calcining, the SrSO of reduction 1mol
4In fact the carbon amount of Jia Ruing is considerably beyond 4mol fixed carbon C.Therefore adopt the industrial chemicals caustic soda that this method still exists needs consumes expensive, disadvantages such as cost height, technical process length.
The object of the present invention is to provide a kind ofly directly thereby Strontium Sulphate to be reduced into the method that strontium oxide makes strontium hydroxide solution, maybe need consume a large amount of industrial chemicals, maybe need adopt high temperature and resistant to elevated temperatures equipment to overcome in the prior art.Drawbacks such as power consumption height, long flow path reach the shortening flow process.Cut down the consumption of energy and purposes such as cost, saving industrial chemicals.
Solution of the present invention is that to adopt major ingredient be that the celestite powder of Strontium Sulphate is as raw material.As reductive agent, high alumina (alumina) cement is binding agent with coke or coal dust; Add water after at first with celestite powder, coke or coal dust and high alumina (alumina) cement mixing before the calcining and make ball reducing; Treat that the air-set of ball material is placed in the converter 1000 ℃～1350 ℃ calcinings 1～3 hour, celestite powder is converted into strontium oxide forges material, and then this is forged material add water logging and boil, separate and make hydrogen-oxygen strontium solution; The amount of each composition in the ball material: reductive agent is pressed the SrSO in the 1mol lazurite
4Meter, the content that the amount of fixed carbon C should be no more than 1mol high alumina (alumina) cement in the coke of adding or the coal dust then are 3～15% of celestite powder weight.The granularity of celestite powder and coke or coal dust generally is advisable with＜70 orders.The present invention carries out according to following reaction:
This reaction process, by calculation of thermodynamics, the equilibrium constant K value of reaction formula (7), (8) is respectively up to 2.2 and 6.7 in the time of 1027 ℃, and this constant value also will increase with the rising of temperature.This is more than directly with SrSO
4Thermal degradation is that the equilibrium constant of SrO is much bigger, and therefore reaction is very easily carried out.The amount of fixed carbon C should be not too much in coke of Jia Ruing or the coal dust in the present invention, otherwise SrSO
4Will as the carbon reduction method of routine, be reduced to SrS, rather than SrO; To adopt high alumina (alumina) cement be binding agent and batching is made ball incinerating purpose be to reduce excess oxygen in the converter or carbon monoxide to the influence of above-mentioned reduction reaction and reduce the loss of forging material in the calcination process.In addition, calcining temperature of the present invention generally should remain in 1000 °～1350 ℃ scopes.Low reaction is difficult to carry out, high not only energy consumption height, and the ball material is easy to the sticking stove of clinkering.
The present invention does not consume caustic soda or industrial chemicals such as soda ash, volatile salt owing to adopting celestite powder and reductive agent, the calcining of binding agent mixed pelletizing in whole process of production; Also do not need in pyrolysis furnace, to react.Characteristics such as therefore the present invention has the technology advanced person, and flow process is short, and energy consumption and cost are lower.
Embodiment
To contain SrSO
481.6% lazurite and the coke that contains fixed carbon C76.1% are processed into granularity＜100 purpose powderies respectively.
Get celestite powder 100kg, coke powder 4.2kg and high-alumina cement 5.0kg mix to be placed on and add water (water spray) on the disk balling machine and make ball, and ball material diameter generally is controlled in φ 5～φ 40mm scope, total about 12kg of amount of water, the ball material sclerosis of giving free rein to.SrSO in this ball material
4Mol number and coke in the ratio of mol number of fixed carbon C be 0.6.
The about 20kg of ball material that at every turn gets after the above-mentioned sclerosis places φ 200 * 4000mm converter to calcine, and converter Revolution Per Minute 1 changes, and adopts the Sweet natural gas heating and calcinings 2 hours down at 1100～1250 ℃.Material is forged in taking-up, and (forge material and contain SrO39.8%, all the other are by SrO: SrS0.1%, SrSO
3+ SrS
2O
32.4%, SrSO
44.82%, other strontium 18.2%) place 100 premium on currency, stir under about 90 ℃ boil 1 hour after, filtered while hot just strontium hydroxide solution, contain Sr(OH in this solution)
284g/L, Ca(OH)
20.09g/L.Filter residue is venting after washing, and wash water is used for the digestion next batch as water later and forges material and use.
Claims (2)
1, a kind of method of producing strontium hydroxide solution, this method comprise reduces calcining with celestite powder and coke or coal dust.Forge material and obtain strontium hydroxide solution through water logging, separation.It is characterized in that it also comprises with high alumina (alumina) cement as binding agent, after reducing before the calcining, add water and make ball at first with celestite powder, coke or coal dust and high alumina (alumina) cement mixing; After treating the air-set of ball material, place converter 1000 °～1350 ℃ burnings 1～3 hour.Celestite powder is converted into strontium oxide forges material, and then fuel is added water logging boil, separate and make strontium hydroxide solution; The amount of each composition in the ball material: reductive agent is by the srso4 in the 1mol lazurite, and the amount that adds fixed carbon c in coke or the coal dust should be no more than 1mol, and the content of high alumina (alumina) cement then is 3～15% of celestite powder weight.
2, by the method for the described production strontium hydroxide solution of claim 1, it is characterized in that the granularity of celestite powder and coke powder or coal dust is advisable with＜70 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108261 CN1070165A (en) | 1992-08-18 | 1992-08-18 | A kind of method of producing strontium hydroxide solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108261 CN1070165A (en) | 1992-08-18 | 1992-08-18 | A kind of method of producing strontium hydroxide solution |
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| Publication Number | Publication Date |
|---|---|
| CN1070165A true CN1070165A (en) | 1993-03-24 |
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|---|---|---|---|
| CN 92108261 Pending CN1070165A (en) | 1992-08-18 | 1992-08-18 | A kind of method of producing strontium hydroxide solution |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776363A (en) * | 2012-08-21 | 2012-11-14 | 中国科学院青海盐湖研究所 | Process for balling by mixing 200 meshes of celestite mineral powders and reduction coals |
| CN108793086A (en) * | 2018-07-23 | 2018-11-13 | 贵州红星发展股份有限公司 | The leaching method and leaching device of alkaline earth sulfide |
| CN114853045A (en) * | 2022-05-24 | 2022-08-05 | 中国科学院过程工程研究所 | Method for preparing strontium hydroxide by alkali fusion roasting of celestite |
-
1992
- 1992-08-18 CN CN 92108261 patent/CN1070165A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776363A (en) * | 2012-08-21 | 2012-11-14 | 中国科学院青海盐湖研究所 | Process for balling by mixing 200 meshes of celestite mineral powders and reduction coals |
| CN102776363B (en) * | 2012-08-21 | 2014-06-18 | 中国科学院青海盐湖研究所 | Process for balling by mixing 200 meshes of celestite mineral powders and reduction coals |
| CN108793086A (en) * | 2018-07-23 | 2018-11-13 | 贵州红星发展股份有限公司 | The leaching method and leaching device of alkaline earth sulfide |
| CN114853045A (en) * | 2022-05-24 | 2022-08-05 | 中国科学院过程工程研究所 | Method for preparing strontium hydroxide by alkali fusion roasting of celestite |
| CN114853045B (en) * | 2022-05-24 | 2024-04-16 | 中国科学院过程工程研究所 | Method for preparing strontium hydroxide by alkali fusion roasting of celestite |
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