CN101759219A - Preparing method of Sr(0H)2.8H2O - Google Patents

Preparing method of Sr(0H)2.8H2O Download PDF

Info

Publication number
CN101759219A
CN101759219A CN200910159961A CN200910159961A CN101759219A CN 101759219 A CN101759219 A CN 101759219A CN 200910159961 A CN200910159961 A CN 200910159961A CN 200910159961 A CN200910159961 A CN 200910159961A CN 101759219 A CN101759219 A CN 101759219A
Authority
CN
China
Prior art keywords
solution
solid
strontium hydroxide
preparation
separated
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
Application number
CN200910159961A
Other languages
Chinese (zh)
Inventor
姜志光
华东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING WANKUN JIAHONG SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Guizhou Redstar Developing Co Ltd
Chongqing Kechang Tech Co Ltd
Original Assignee
BEIJING WANKUN JIAHONG SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Chongqing Kechang Tech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BEIJING WANKUN JIAHONG SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd, Chongqing Kechang Tech Co Ltd filed Critical BEIJING WANKUN JIAHONG SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Priority to CN200910159961A priority Critical patent/CN101759219A/en
Publication of CN101759219A publication Critical patent/CN101759219A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

The present invention relates to a preparing method of strontium hydroxide. In the method, quantitative manganese oxide powdered ore is added into Sr(HS)2 solution of which the concentration is 0.20 to 0.55 mol/L, and the reaction temperature is maintained within 60 DEG C to 85 DEG C ; the mixture is stirred closely for 1.5 to 3 hours to be separated in a solid-liquid way; filtered liquid is cooled closely to 25 DEG C to 35 DEG C, and is separated in the solid-liquid way to obtain crude Sr(0H)2.8H2O; the obtained solid is dissolved by de-ionized water according to concentration of 0.5 to 0.8 mol/L [Sr2+]; 27.5% of H2O2 is added according to the proportion of 2 to 5mol/L to be heated and boiled for 15 to 30 minutes, and the solution is filtered and separated; the obtained filtered liquid is closely cooled and crystallized to 35 DEG C to 45 DEG C, and is separated in a centrifugal way; and solid is dried to obtain the final product of Sr(0H)2.8H2O. The Sr(HS)2 solution generated by hydrolyzing SrS is extracted twice, which can obtain strontium hydroxide with low cost.

Description

A kind of Sr (OH) 28H 2The preparation method of O
Technical field
The present invention relates to a kind of Sr (OH) 28H 2The preparation method of O particularly utilizes Sr (HS) 2Prepare Sr (OH) 28H 2The method of O.
Background technology
Along with the development of liquid-crystal display and sensitive ceramic, to high-quality SrCO 3Need also increases Sr (OH) thereupon 2Operational path carbonization synthetic SrCO 3Can satisfy the physical and chemical quality requirement of above-mentioned industry, the Sr (OH) of traditional hydrochloric acid-liquid caustic soda route and pyrolytic decomposition extract technology path of preparing 2Because cost factor has not had competitive capacity.
Mainly contain manganese and iron in the Manganse Dioxide breeze, the content of other metal is with respect to very low can the ignoring of content of manganese in suitability for industrialized production.
The applicant has been to have disclosed first extraction Sr (OH) in 200910158214.0 at the number of patent application in first to file 28H 2The method of O quotes in full to do reference herein.In first to file, disclose from SrS solution through cooling off the method for direct separation of hydrogen strontium oxide at this.The Sr (OH) that it utilizes the SrS hydrolysis to produce 2With Sr (HS) 2Solution obtains Sr (OH) through refrigerated separation 28H 2The O crude product obtains Sr (OH) through the removal of impurities recrystallization again 28H 2The O product is able to low-cost industrial production Sr (OH) 28H 2The O product, the Sr (OH) that utilizes mother liquor or crystallization to go out then 28H 2O is water-soluble to carry out carbonization and obtains SrCO 3Product.The main chemical reactions formula that should relate in first to file is: 2SrS+2H 2O → Sr (OH) 2+ Sr (HS) 2So, once extracted Sr (OH) 2After, be left Sr (HS) 2Solution.
Summary of the invention
A Sr (OH) has been extracted in utilization of the present invention 2The Sr (HS) that the back is remaining 2Solution and manganese oxide react, and further obtain Sr (OH) 28H 2The O product, thus Sr (OH) greatly reduced 28H 2The preparation cost of O.
The objective of the invention is with manganese oxide and Sr (HS) 2Thereby carry out the low-cost preparation of redox reaction Sr (OH) 28H 2The O product.
The chemical equation Sr (HS) that the present invention relates generally to 2+ MnO 2→ Sr (OH) 2+ SrS x+ MnO, its technical process as shown in Figure 1.
Concrete technical scheme of the present invention is:
With Sr (HS) 2Strength of solution is adjusted to 0.20～0.55mol/L, is preferably 0.40～0.55mol/L;
With above-mentioned Sr (HS) 2Solution and manganese oxide powder are pressed manganese: sulphur=1: 1～1.1, and iron: react sulphur=1: 1.5～1.65, keeps temperature of reaction 60～85 ℃ of scopes, airtight stirring 1.5～3 hours, solid-liquid separation, filter residue reclaims preparation MnSO 4Product, filtrate is airtight to be cooled to 25～35 ℃, is preferably 30～35 ℃, carries out solid-liquid separation then, gets thick Sr (OH) 28H 2O;
With the thick Sr of gained (OH) 28H 2O is according to 0.5～0.8mo l/L[Sr 2+] use deionized water dissolving, add 27.5 weight %H according to the ratio of 2～5ml/L 2O 2Sulphur removal, heated and boiled was also kept 15～30 minutes, filtering separation, filter residue is abandoned, the airtight crystallisation by cooling to 35 of filtrate～45 ℃ carries out centrifugation after being preferably 40～45 ℃, the oven dry solid, the finished product Sr (OH) 28H 2O.
Description of drawings
Fig. 1 is a main technique schema of the present invention.
Embodiment
Embodiment 1
Sr (HS) with 0.47mol/L 2Solution 4000ml places the 5000ml beaker, stirs to add 752g manganese oxide powder (MnO down 225.1%, Fe 7.8%), electric furnace heating also maintains 70 ℃, airtight stirring 2 hours stops to stir, and draws upper clear supernate with emulsion tube after the sedimentation, add the reaction of 1000ml hot deionized water and agitator treating after, suction strainer separates, filter residue prepares MnSO 4Product, merging filtrate airtightly is cooled to 35 ℃.
Solution suction strainer after the above-mentioned cooling is separated, and SrCO is reclaimed in the filtrate carbonization 3, thick Sr (OH) 28H 2O presses 0.8mol/L[Sr 2+] add the deionized water heating for dissolving, add 27.5%H in the 3ml/L ratio 2O 2Boiling 15 minutes is also kept in sulphur removal, heated and boiled, and with qualitative filter paper filtration at a slow speed, filter residue is abandoned, and filtrate is airtight to be cooled to 40 ℃.
Solution centrifugal after the above-mentioned cooling is separated, and Recycling Mother Solution is used, and crystallization obtains Sr (OH) 28H 2O places 65 ℃ of convection oven oven dry to obtain Sr (OH) in 6 hours 28H 2O sample 1 #
Embodiment 2
With 0.55mol/L Sr (HS) 2Solution 4000ml places the 5000ml beaker, stirs to add 628g manganese oxide powder (MnO down 238.7%, Fe 8.6%), the electric furnace heating also maintains 80 ℃ of temperature, and confined reaction 2 hours stops to stir, and siphon supernatant liquor after the sedimentation is added dilution of 1000ml hot deionized water and washery slag, and suction strainer separates, and filter residue prepares MnSO 4, merging filtrate is airtight to be cooled to 30 ℃.
Solution suction strainer after the above-mentioned cooling is separated, and SrCO is reclaimed in the filtrate carbonization 3, thick Sr (OH) 28H 2O presses 0.7mo l/L[Sr 2+] with the hot deionized water dissolving, add 3ml/L 27.5%H 2O 2Sulphur removal, heated and boiled, and kept 25 minutes, with qualitative filter paper filtration at a slow speed, filter residue is abandoned, and filtrate is airtight to be cooled to 45 ℃.
Solution centrifugal after the above-mentioned cooling is separated, and Recycling Mother Solution is used, Sr (OH) 28H 2O places 65 ℃ of convection oven oven dry to obtain Sr (OH) in 6 hours 28H 2O sample 2 #
Embodiment 3
With 0.40mol/L Sr (HS) 2Solution 4000ml places the 5000ml beaker, stirs to add 474g manganese oxide powder (MnO down 238.7%, Fe 8.6%), the electric furnace heating also maintains 85 ℃ of temperature, and confined reaction 2 hours stops to stir, and siphon supernatant liquor after the sedimentation is added dilution of 1000ml hot deionized water and washery slag, and suction strainer separates, and filter residue prepares MnSO 4, merging filtrate is airtight to be cooled to 32 ℃.
Solution suction strainer after the above-mentioned cooling is separated, and SrCO is reclaimed in the filtrate carbonization 3, thick Sr (OH) 28H 2O presses 0.7mol/L[Sr 2+] with the hot deionized water dissolving, add 3ml/L 27.5%H 2O 2Sulphur removal, heated and boiled, and kept 25 minutes, with qualitative filter paper filtration at a slow speed, filter residue is abandoned, and filtrate is airtight to be cooled to 43 ℃.
Solution centrifugal after the above-mentioned cooling is separated, and Recycling Mother Solution is used, Sr (OH) 28H 2O places 65 ℃ of convection oven oven dry to obtain Sr (OH) in 6 hours 28H 2O sample 3 #
Embodiment 4
With 0.20mol/L Sr (HS) 2Solution 4000ml places the 5000ml beaker, stirs to add 237g manganese oxide powder (MnO down 238.7%, Fe 8.6%), the electric furnace heating also maintains 60 ℃ of temperature, and confined reaction 2 hours stops to stir, and siphon supernatant liquor after the sedimentation is added dilution of 1000ml hot deionized water and washery slag, and suction strainer separates, and filter residue prepares MnSO 4, merging filtrate is airtight to be cooled to 25 ℃.
Solution suction strainer after the above-mentioned cooling is separated, and SrCO is reclaimed in the filtrate carbonization 3, thick Sr (OH) 28H 2O presses 0.7mo l/L[Sr 2+] with the hot deionized water dissolving, add 3ml/L 27.5%H 2O 2Sulphur removal, heated and boiled, and kept 30 minutes, with qualitative filter paper filtration at a slow speed, filter residue is abandoned, and filtrate is airtight to be cooled to 35 ℃.
Solution centrifugal after the above-mentioned cooling is separated, and Recycling Mother Solution is used, Sr (OH) 28H 2O places 65 ℃ of convection oven oven dry to obtain Sr (OH) in 6 hours 28H 2O sample 4 #
More than each embodiment gained sample Sr (OH) 28H 2O content and foreign matter content data such as following table:
Content ??1 # ??2 # ??3 # ??4 #
??Sr(OH) 2·8H 2O (weight %) ??97.21 ??99.18 ??99.05 ??98.78
??K ??＜20ppm ??＜20ppm ??＜20ppm ??＜20ppm
??Na ??＜10ppm ??＜10ppm ??＜10ppm ??＜10ppm
??Ca ??＜100pp ??＜100ppm ??＜100ppm ??＜100ppm
??Mg ??＜10ppm ??＜10ppm ??＜10ppm ??＜10ppm
??Fe ??＜10ppm ??＜10ppm ??＜10ppm ??＜10ppm

Claims (5)

1. the preparation method of a strontium hydroxide, it comprises step:
A is with Sr (HS) 2The concentration of solution is adjusted to 0.20～0.55mol/L;
B is with above-mentioned Sr (HS) 2Solution adds manganese oxide powder and presses manganese: sulphur=1: 1～1.1, and iron: react sulphur=1: 1.5～1.65, keeps temperature of reaction 60～85 ℃ of scopes, airtight stirring 1.5～3 hours, solid-liquid separation gets filtrate;
C is cooled to 25～35 ℃ with above-mentioned gained filtrate is airtight, carries out solid-liquid separation then, thick Sr (OH) 28H 2O;
D is with the thick Sr of gained (OH) 28H 2O is by 0.5～0.8mol/L[Sr 2+] use deionized water dissolving, add 27.5 weight %H according to the ratio of 2～5ml/L 2O 2, heated and boiled was also kept 15～30 minutes, and filtering separation gets filtrate;
E carries out centrifugation with behind the airtight crystallisation by cooling to 35 of gained filtrate～45 ℃, the oven dry solid, the finished product Sr (OH) 28H 2O.
2. the preparation method of strontium hydroxide as claimed in claim 1, wherein Sr (HS) in the steps A 2The concentration of solution is adjusted to 0.40～0.55mol/L.
3. the preparation method of strontium hydroxide as claimed in claim 1 or 2, wherein keeping temperature of reaction among the step C is 30～35 ℃.
4. the preparation method of strontium hydroxide as claimed in claim 1 or 2 wherein carries out centrifugation behind the gained filtrate crystallisation by cooling to 40 in the step e～45 ℃.
5. the preparation method of strontium hydroxide as claimed in claim 3 wherein carries out centrifugation behind the gained filtrate crystallisation by cooling to 40 in the step e～45 ℃.
CN200910159961A 2009-07-27 2009-07-27 Preparing method of Sr(0H)2.8H2O Pending CN101759219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910159961A CN101759219A (en) 2009-07-27 2009-07-27 Preparing method of Sr(0H)2.8H2O

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910159961A CN101759219A (en) 2009-07-27 2009-07-27 Preparing method of Sr(0H)2.8H2O

Publications (1)

Publication Number Publication Date
CN101759219A true CN101759219A (en) 2010-06-30

Family

ID=42490627

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910159961A Pending CN101759219A (en) 2009-07-27 2009-07-27 Preparing method of Sr(0H)2.8H2O

Country Status (1)

Country Link
CN (1) CN101759219A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102765739A (en) * 2012-08-13 2012-11-07 贵州红星发展股份有限公司 High-purity strontium oxide and preparation method thereof
CN102765740A (en) * 2012-06-19 2012-11-07 南京金焰锶业有限公司 Preparation method of strontium carbonate with high purity
CN105293554A (en) * 2015-11-10 2016-02-03 青海民族大学 Method for preparing high-purity strontium dihydroxide by utilizing strontium slag

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102765740A (en) * 2012-06-19 2012-11-07 南京金焰锶业有限公司 Preparation method of strontium carbonate with high purity
CN102765740B (en) * 2012-06-19 2014-03-05 南京金焰锶业有限公司 Preparation method of strontium carbonate with high purity
CN102765739A (en) * 2012-08-13 2012-11-07 贵州红星发展股份有限公司 High-purity strontium oxide and preparation method thereof
CN102765739B (en) * 2012-08-13 2014-10-29 贵州红星发展股份有限公司 High-purity strontium oxide and preparation method thereof
CN105293554A (en) * 2015-11-10 2016-02-03 青海民族大学 Method for preparing high-purity strontium dihydroxide by utilizing strontium slag

Similar Documents

Publication Publication Date Title
CN100549193C (en) From red mud, extract the method for metal scandium, titanium
CN103361486B (en) Method for extracting high purity scandium oxide and titanium from waste acid solution containing scandium and titanium
CN101792187B (en) Method for producing feed grade ferrous sulfate monohydrate from titanium pigment waste acid condensed slag
CN101985694A (en) Preparation method for recovering high-purity yttrium europium from fluorescent powder scrap
CN102115822A (en) Method for recovering rare earth oxide from fluorescent powder and polishing powder waste
CN111039265B (en) Preparation method of high-purity selenium
CN102502721B (en) Method for preparing lithium carbonate through extracting lithium from lithium ore
WO2017080244A1 (en) Method for preparing high-purity strontium chloride by using strontium slag
CN103131862B (en) Pretreatment decomposition method extracts high purity rare earth oxides from fluorescent powder scrap
CN102897804B (en) Method for preparing lithium carbonate directly from lithium chloride and carbon dioxide
CN101759219A (en) Preparing method of Sr(0H)2.8H2O
CN106348319A (en) Method for utilizing serpentine for preparing high-purity magnesium oxide
CN109019547A (en) A kind of utilization method of waste battery grade ferric phosphate
CN102382979A (en) Technique for extracting rare earth from rare earth tailing and preparing calcium sulfate whiskers
CN100427400C (en) Prepn process of high purity yttrium europium oxide
CN100480404C (en) Method for leaching vanadium from stone-like coal by oxidation transformation
CN102277498A (en) Method for enriching rare earth by aluminum oxide red mud
CN115321577A (en) Preparation method of yttrium oxide
KR102253829B1 (en) REMOVAL OF SULFATE IN Li₂CO₃
CN101704540A (en) Collinear preparation method for strontium hydrate and strontium carbonate
CN101774621B (en) Method for preparing Ba(OH)2.8H2O
CN101774619B (en) Method for preparing Ba(OH)2.8H2O
CN101774625B (en) Method for preparation of Ba(NO3)2
CN1152823C (en) High-purity barium carbonate productive technology for electronic material
RU2431691C1 (en) Procedure for processing grinding wastes from manufacture of permanent magnets

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: 20100630