CN1064851A - A kind of production method of Strontium carbonate powder - Google Patents
A kind of production method of Strontium carbonate powder Download PDFInfo
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- CN1064851A CN1064851A CN 91101537 CN91101537A CN1064851A CN 1064851 A CN1064851 A CN 1064851A CN 91101537 CN91101537 CN 91101537 CN 91101537 A CN91101537 A CN 91101537A CN 1064851 A CN1064851 A CN 1064851A
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- strontium carbonate
- strontium
- carbonate powder
- carbonization
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Abstract
The present invention relates to a kind of production method of Strontium carbonate powder, the carbon dioxide that strontium sulfide solution and limestone kiln produce carries out carburizing reagent and generates strontium carbonate suspension and by product hydrogen sulfide in three placed in-line bubble-plate columns of circulation, strontium carbonate suspension add a small amount of soda ash desulfurization make react completely and by product further change into Strontium carbonate powder, the hydrogen sulfide that tail gas is discharged can directly be produced sulphur, Recycling Mother Solution is used, three-waste free discharge.
Description
The present invention relates to a kind of production method of Strontium carbonate powder, belong to the preparation method of general mineral compound.
Preparing strontium carbonate is that Strontium carbonate powder and soda ash solution are conversion reaction more than 100 ℃ except traditional double decomposition, English Patent 1404226 has proposed to use carbon dioxide directly to feed the method for continuous production Strontium carbonate powder in the strontium sulfide solution, this method is to form several reaction zones in the reactor that a specific band stirs, strontium carbide solution imports the Strontium Sulphate suspension and the hydrogen sulfide that produce after the reaction by different inlets respectively with carbon dioxide and is derived by different outlets again, the characteristics of this method are can continuous production, but need reactant concn higher, the concentration of reactants of carrying out with reaction needs control, and because adopts the continuously stirring power consumption also bigger.
The lime-kiln gas that the objective of the invention is to utilize the carbon dioxide that contains low concentration as carbon dioxide air source and strontium sulfide solution placed in-line bubble-plate column internal reaction generate by product hydrogen sulfide that the reaction of Strontium carbonate powder suspension generates through 2 pre-carbonating towers absorb samples most, after remainder is discharged as tail gas, can directly produce sulphur, thereby industrial gasses have been made full use of, three-waste free discharge, and reduce production costs greatly.
Technology contents of the present invention takes following proposal to realize.
With the lime-kiln gas that contains carbonic acid gas 38-42% is source of the gas, three bubble-plate column internal reactions that the strontium sulfide solution of 30-70% is equipped with in feeding generate suspendible shape Strontium carbonate powder, bubble-plate column is the circulation coupled in series, lime-kiln gas enters from the tower below, tail gas is discharged from the tower top, strontium sulfide solution enters from tower side top, and in reaction process, whenever main reaction is next tower as main reaction tower (tower I) generation Strontium carbonate powder:
The tail gas that contains hydrogen sulfide and carbonic acid gas of being discharged by the main reaction tower enters next tower to carry out the pre-carbonating tower internal reaction of pre-carbonization (tower II) and is:
The tail gas that pre-carbonating tower is discharged enters the 3rd tower again and carries out pre-carbonization (tower III), and the 3rd pre-carbonating tower internal reaction is:
When the carbonization of main reaction tower reaches terminal point, the lime-kiln gas air intake valve of turning off the tower I, make lime-kiln gas at first feed next pre-carbonating tower (tower II) and in the tower II, carry out main reaction at this moment, the tower II then becomes main carbonating tower, and the tower I is discharged strontium carbonate suspension by the tower bottom valve and re-filled strontium sulfide solution again; The tail gas that the tower II is discharged feeds the tower I and carries out further pre-carbonization after the pre-carbonization of tower III, form a circulating system, carbonization temperature is 60-90 ℃, main carbonization time is 40-70 minute, and the strontium carbonate suspension that obtains after the carbonization adds a small amount of yellow soda ash makes a pair reaction product SrSO at 80-100 ℃ of desulfurizing and purifying
3, SrS
2O
3, SrS
2Deng and a small amount of completely SrS of unreacted
1, Sr(HS)
2Further changing into the Strontium carbonate powder desulphurization reaction is:
Desulphurization reaction carried out under agitation condition 30-60 minute, and the add-on of yellow soda ash is a Strontium carbonate powder: yellow soda ash is 1: 0.024, and the Strontium carbonate powder after the desulfurization is dried after filtration and obtained finished product.
Technological advantage of the present invention is that production cost is low, raw material is easy to get, the carbon dioxide gas that the present invention adopts Wingdale to produce through roasting reduces production cost significantly, environmentally safe adopts the mother liquor after technology Strontium carbonate powder of the present invention filters to return the leaching strontium sulfide, recycles, no discharging of waste liquid, the hydrogen sulfide mean concns that tail gas generates can directly be produced sulphur, non-exhaust emission more than 25%.
Describe content of the present invention in detail below in conjunction with embodiment.
Fig. 1 is a process flow diagram.
Among the figure
1,2,3 lime-kiln gas intake valves
4,5,6 tail gas intake valves
7,8,9 strontium sulfide feed liquor valves
10,11,12 tail gas vent valves
13,14,15 end point determination valves
16,17,18 Strontium carbonate powder outlet valves
19 bubble-caps
With concentration 45g/L volume is that the strontium sulfide solution of 5000ml is successively from valve 7,8,9 enter volume respectively for the tower I of 10000ml, the tower II, in the tower III, the limestone kiln gas of carbonated 40% feeds through valve 5 from tower I bottom through valve 1, valve 6 passes through the tower II successively, the tower III is discharged along exhaust emission tube from the valve 12 of tower III at last, when the carbonization of tower I solution is reached home, (with lead acetate test paper measure or with S concentration in the standard iodine volumetric soiutions) transformation efficiency is 97% o'clock shut-off valve 1, the valve 16 that valve 5 is opened the tower I makes the suspendible Strontium carbonate powder be discharged to the digester that has stirrer and heating steam pipe from delivery pipe, the tower I is replenished strontium sulfide solution again, adjusting valve makes lime-kiln gas enter the tower II from valve 2 to feed the tower III successively and enter the tower I from valve 4 and discharge hydrogen sulfide tail gas from the valve 10 of tower I at last, after reaching home Deng the carbonization of tower II, open the valve 17 discharge suspendible Strontium carbonate powders of II tower and adjust the valve feed liquor again ... circulation successively, remaining one of them tower is main carbonating tower, other two towers are pre-carbonating tower, and the tail gas that main carbonating tower is discharged is discharged after two pre-carbonating towers fully absorb again.The strontium carbonate suspension that carbonization generates adds a small amount of soda ash and is heated to 80-100 ℃, and insulated and stirred 30-60 minute, adding alkali number was Strontium carbonate powder: yellow soda ash=1: 0.024, and the Strontium carbonate powder water content after the filtration is 25-40%, oven dry obtains containing in the finished product:
Strontium carbonate powder 〉=98%
Lime carbonate＜0.3%
Strontium carbonate powder＜0.26%
Sodium＜0.18%
Iron is (with Fe
2O
3Meter)＜0.0046%
Muriate (in CL)＜0.049%
Hydrochloric acid insoluble substance＜0.1%
Total sulfur (in S)＜0.12%
Claims (1)
1, it is source of the gas that a kind of method of producing Strontium carbonate powder adopts the lime-kiln gas of carbonated 38-42%, feeding is equipped with in three bubble-plate columns of strontium sulfide solution of 30-70%, reaction generates the suspendible Strontium carbonate powder, bubble-plate column is the circulation coupled in series, lime-kiln gas enters from the tower below, tail gas is discharged from the tower top, strontium sulfide solution enters from the side top of tower, every next tower generates Strontium carbonate powder as main reaction tower (tower I) in reaction process, the tail gas that contains hydrogen sulfide and carbonic acid gas of being discharged by the main reaction tower enters following two tower (tower II successively, the tower III) carries out discharging again after pre-carbonization absorbs, when the carbonization of main reaction tower reaches terminal point, discharge strontium carbonate suspension, re-fill strontium sulfide solution, adjusting each valve directly feeds kiln gas to carry out its tail gas of main reaction in the pre-carbonating tower (tower II) and feeds other two tower (tower III again successively, the tower I) carrying out pre-carbonization in absorbs, form a circulating system, carbonization temperature is 60-90 ℃, main carbonization time is 40-70 minute, the strontium carbonate suspension that obtains after the carbonization adds a small amount of yellow soda ash under 80-100 ℃ of condition, insulated and stirred 30-60 minute desulfurizing and purifying, the add-on of yellow soda ash are Strontium carbonate powder: yellow soda ash=1: 0.024.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101537 CN1038320C (en) | 1991-03-16 | 1991-03-16 | Process for manufacturing strontium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101537 CN1038320C (en) | 1991-03-16 | 1991-03-16 | Process for manufacturing strontium carbonate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1064851A true CN1064851A (en) | 1992-09-30 |
| CN1038320C CN1038320C (en) | 1998-05-13 |
Family
ID=4905130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91101537 Expired - Fee Related CN1038320C (en) | 1991-03-16 | 1991-03-16 | Process for manufacturing strontium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038320C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106346C (en) * | 1999-03-19 | 2003-04-23 | 郭建勛 | Process for preparing strontium carbonate by continuous carbonifying method |
| CN101774624B (en) * | 2009-07-28 | 2012-07-04 | 贵州红星发展股份有限公司 | Method for preparing Sr (NO3)2 |
| 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 |
| 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 |
| CN107140670A (en) * | 2017-04-25 | 2017-09-08 | 重庆庆龙精细锶盐化工有限公司 | It is a kind of to produce strontium carbonate, barium carbonate technique without the continuous carbonization of hydrogen sulfide gas holder |
| CN108751245A (en) * | 2018-09-07 | 2018-11-06 | 南京金焰锶业有限公司 | The system and technique of hydrogen sulfide are removed in a kind of strontium sulfide solution carbonisation |
-
1991
- 1991-03-16 CN CN 91101537 patent/CN1038320C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106346C (en) * | 1999-03-19 | 2003-04-23 | 郭建勛 | Process for preparing strontium carbonate by continuous carbonifying method |
| CN101774624B (en) * | 2009-07-28 | 2012-07-04 | 贵州红星发展股份有限公司 | Method for preparing Sr (NO3)2 |
| 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 |
| 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 |
| CN107140670A (en) * | 2017-04-25 | 2017-09-08 | 重庆庆龙精细锶盐化工有限公司 | It is a kind of to produce strontium carbonate, barium carbonate technique without the continuous carbonization of hydrogen sulfide gas holder |
| CN108751245A (en) * | 2018-09-07 | 2018-11-06 | 南京金焰锶业有限公司 | The system and technique of hydrogen sulfide are removed in a kind of strontium sulfide solution carbonisation |
| CN108751245B (en) * | 2018-09-07 | 2023-09-26 | 南京金焰锶业有限公司 | System and process for removing hydrogen sulfide in strontium sulfide solution carbonization process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038320C (en) | 1998-05-13 |
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