CN100497178C - Method for preparing strontium carbonate salt from metal strontium slag - Google Patents
Method for preparing strontium carbonate salt from metal strontium slag Download PDFInfo
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- CN100497178C CN100497178C CNB2007100250007A CN200710025000A CN100497178C CN 100497178 C CN100497178 C CN 100497178C CN B2007100250007 A CNB2007100250007 A CN B2007100250007A CN 200710025000 A CN200710025000 A CN 200710025000A CN 100497178 C CN100497178 C CN 100497178C
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Abstract
This invention relates to production of strontium carbonate salt by using strontium slag as raw material. The procedures are: (1), crashing the slag into powder; (2), putting said powder into boiling water and agitating thoroughly, to produce soluble strontium hydroxide during reaction; (3), obtaining the solution after centrifuging or filtering; (4), adding carbonate or bicarbonate, together with agitation to make through reaction; (5), obtaining precipitate of strontium carbonate by filtering or centrifuging, (6), drying said precipitate to obtain the inventive product. In this invention, due to the use of boiling water as a substitute for inorganic acid, the production cost is reduced and the production process is simplified.
Description
Technical field
The present invention relates to the method that a kind of Preparation of Metallic Strontium slag extracts Strontium carbonate powder salt.
Background technology
The preparation method of Preparation of Metallic Strontium mainly is the vacuum thermit reduction, is raw material with the Strontium carbonate powder powder promptly, resolves into strontium oxide through high-temperature calcination, uses the aluminium powder high temperature reduction under vacuum condition, and distillation is simultaneously purified and made Preparation of Metallic Strontium.Actual product strontium rate in producing at present is 50～65% only, has nearly half strontium to remain in the slag, and these slags are buried as waste residue always, have just be directly exposed to outside, soak once run into rainwater, will generate alkaline matter, make the alkalization of soil and underground water, the havoc eubiosis.Along with Preparation of Metallic Strontium is increasingly extensive in the application of electronic information, chemical industry, light industry, medicine, pottery, metallurgy industry, the demand of Preparation of Metallic Strontium also constantly enlarges, the strontium slag pollutes and also is on the rise, produce 1 ton of Preparation of Metallic Strontium will output about 1 ton or more strontium slag simultaneously, the waste of visible Preparation of Metallic Strontium resource is surprising.Therefore, how effectively to handle the difficult problem that the Preparation of Metallic Strontium slag is the puzzlement people.
Chinese patent application 200410013993.2 has disclosed a kind of method with Preparation of Metallic Strontium slag extraction strontium salt, and this method needs to use a large amount of acid that the strontium slag is dissolved in reaction process, and then produces Strontium carbonate powder with carbonate reaction.Because using at present maximum on the market is Strontium carbonate powder, it has very big market demand, so produce a kind of preferable selection that Strontium carbonate powder is a processing Preparation of Metallic Strontium slag with the Preparation of Metallic Strontium slag.But the disclosed method of above-mentioned patent application is to use mineral acid to come dissolution of metals strontium slag, its usage quantity is generally 3 moles/100 gram strontium slags, and for the Preparation of Metallic Strontium slag can fully be dissolved, not only need excessive adding mineral acid, while is for the processing of these acid, also need corresponding alkali to neutralize, so its production cost is higher, even is higher than the market value of present Strontium carbonate powder.
Summary of the invention
Technical problem to be solved by this invention is the high problem of cost that existing strontium slag prepares strontium salt, provides a kind of simple employing strontium slag to prepare the method for Strontium carbonate powder salt.
The present invention includes following steps:
1) with Preparation of Metallic Strontium slag crusher in crushing, makes the strontium ground-slag;
2) the strontium ground-slag is joined in the boiling water, the limit adds strontium ground-slag limit stirs, and makes the strontium ground-slag fully react the strontium hydroxide that generates solubility;
3) by separating centrifuge or strainer solution is separated, obtain strontium hydroxide solution;
4) add carbonate or supercarbonate in above-mentioned strontium hydroxide solution, the limit adds carbonate or the hydrogen-carbonate Yanbian stirs, and reacts fully and carries out;
5) by separating centrifuge or strainer solution is separated, obtain the Strontium carbonate powder throw out;
6) to the oven dry of Strontium carbonate powder throw out, promptly obtain Strontium carbonate powder.
Above-mentioned steps 1) in, the Preparation of Metallic Strontium slag needed at least 60 purpose screen clothes after with crusher in crushing, so that the Preparation of Metallic Strontium slag can fully react.
Above-mentioned steps 2) in, fully react the strontium hydroxide that generates solubility for making the strontium ground-slag, the strontium ground-slag should join in the boiling water in batches lentamente, and water temperature is controlled at 70～100 ℃.
Above-mentioned steps 3) in,, do not precipitate in order to guarantee strontium hydroxide, so process control temp is controlled at 50～100 ℃ owing to the rising of the solubility with temperature of strontium hydroxide increases.
Above-mentioned steps 4) carbonate described in or supercarbonate are selected from soluble carbon hydrochlorate or supercarbonates such as bicarbonate of ammonia, volatile salt or sodium bicarbonate.The consumption of carbonate or supercarbonate is 30～40% of Preparation of Metallic Strontium slag weight in carbonate or bicarbonate radical.
The present invention uses boiling water directly the Preparation of Metallic Strontium slag to be dissolved, and not only production technique is simple, and production cost is low.
Embodiment
Embodiment 1
1,, crosses 80 eye mesh screens and make the strontium ground-slag with Preparation of Metallic Strontium slag 100kg crusher in crushing;
2, the strontium ground-slag is joined in the boiling water in batches lentamente, temperature is controlled at 70 ℃, and the limit adds the stirring of strontium ground-slag limit simultaneously, makes the strontium ground-slag fully react the strontium hydroxide that generates solubility;
3, by separating centrifuge or strainer solution is separated, obtain strontium hydroxide solution,, do not precipitate in order to guarantee strontium hydroxide, so process control temp is controlled at 50 ℃ owing to the rising of the solubility with temperature of strontium hydroxide increases;
4, add bicarbonate of ammonia 45kg in above-mentioned strontium hydroxide solution, the limit adds the stirring of bicarbonate of ammonia limit simultaneously, reacts fully and carries out;
5, by separating centrifuge or strainer solution is separated, obtain the Strontium carbonate powder throw out;
6, to the oven dry of Strontium carbonate powder precipitation, obtain Strontium carbonate powder 63.6kg.
Embodiment 2
1,, crosses 100 eye mesh screens and make the strontium ground-slag with Preparation of Metallic Strontium slag 100kg crusher in crushing;
2, the strontium ground-slag is joined in the boiling water in batches lentamente, temperature is controlled at 85 ℃, and the limit adds the stirring of strontium ground-slag limit simultaneously, makes the strontium ground-slag fully react the strontium hydroxide that generates solubility;
3, by separating centrifuge or strainer solution is separated, obtain strontium hydroxide solution,, do not precipitate in order to guarantee strontium hydroxide, so process control temp is controlled at 65 ℃ owing to the rising of the solubility with temperature of strontium hydroxide increases;
4, add volatile salt 56kg in above-mentioned strontium hydroxide solution, the limit adds the stirring of volatile salt limit simultaneously, reacts fully and carries out;
5, by separating centrifuge or strainer solution is separated, obtain the Strontium carbonate powder throw out;
6, to the oven dry of Strontium carbonate powder precipitation, obtain Strontium carbonate powder 65.0kg.
Embodiment 3
1,, crosses 120 eye mesh screens and make the strontium ground-slag with Preparation of Metallic Strontium slag 100kg crusher in crushing;
2, the strontium ground-slag is joined in the boiling water in batches lentamente, temperature is controlled at 100 ℃, and the limit adds the stirring of strontium ground-slag limit simultaneously, makes the strontium ground-slag fully react the strontium hydroxide that generates solubility;
3, by separating centrifuge or strainer solution is separated, obtain strontium hydroxide solution,, do not precipitate in order to guarantee strontium hydroxide, so process control temp is controlled at 80 ℃ owing to the rising of the solubility with temperature of strontium hydroxide increases;
4, add sodium bicarbonate 48kg in above-mentioned strontium hydroxide solution, the limit adds the stirring of sodium bicarbonate limit simultaneously, reacts fully and carries out;
5, by separating centrifuge or strainer solution is separated, obtain the Strontium carbonate powder throw out;
6, to the oven dry of Strontium carbonate powder precipitation, obtain Strontium carbonate powder 66.5kg.
Claims (6)
1, a kind of method that adopts the Preparation of Metallic Strontium slag to prepare Strontium carbonate powder salt is characterized in that comprising the steps:
1) with Preparation of Metallic Strontium slag crusher in crushing, makes the strontium ground-slag;
2) the strontium ground-slag is joined in the hot water, the limit adds strontium ground-slag limit stirs, and makes the strontium ground-slag fully react the strontium hydroxide that generates solubility;
3) by separating centrifuge or strainer solution is separated, obtain strontium hydroxide solution;
4) add carbonate or supercarbonate in above-mentioned strontium hydroxide solution, the limit adds carbonate or the hydrogen-carbonate Yanbian stirs, and reacts fully and carries out;
5) by separating centrifuge or strainer solution is separated, obtain the Strontium carbonate powder throw out;
6) to the oven dry of Strontium carbonate powder throw out, promptly obtain Strontium carbonate powder.
2, employing Preparation of Metallic Strontium slag as claimed in claim 1 prepares the method for Strontium carbonate powder salt, it is characterized in that crossing at least 60 eye mesh screens after the Preparation of Metallic Strontium slag is with crusher in crushing in the step 1).
3, employing Preparation of Metallic Strontium slag as claimed in claim 1 prepares the method for Strontium carbonate powder salt, it is characterized in that step 2) in the hot water temperature be controlled at 70～100 ℃.
4, employing Preparation of Metallic Strontium slag as claimed in claim 1 prepares the method for Strontium carbonate powder salt, it is characterized in that the temperature of step 3) is controlled at 50～100 ℃.
5, employing Preparation of Metallic Strontium slag as claimed in claim 1 prepares the method for Strontium carbonate powder salt, it is characterized in that described carbonate of step 4) or supercarbonate are selected from bicarbonate of ammonia, volatile salt or sodium bicarbonate.
6, employing Preparation of Metallic Strontium slag as claimed in claim 1 prepares the method for Strontium carbonate powder salt, and the consumption that it is characterized in that described carbonate of step 4) or supercarbonate is 30～40% of Preparation of Metallic Strontium slag weight in carbonate or bicarbonate radical.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100250007A CN100497178C (en) | 2007-07-17 | 2007-07-17 | Method for preparing strontium carbonate salt from metal strontium slag |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100250007A CN100497178C (en) | 2007-07-17 | 2007-07-17 | Method for preparing strontium carbonate salt from metal strontium slag |
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| CN101100308A CN101100308A (en) | 2008-01-09 |
| CN100497178C true CN100497178C (en) | 2009-06-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102000592B (en) * | 2010-11-02 | 2012-08-15 | 重庆大学 | Method for preparing strontium magnetic solid super acidic catalyst by immersing and baking method |
| CN102534230B (en) * | 2011-12-31 | 2014-01-22 | 河北辛集化工集团有限责任公司 | Method for extracting strontium carbonate from metal strontium residues |
| CN103787397B (en) * | 2013-12-13 | 2015-07-01 | 绵阳市远达新材料有限公司 | Preparation method for high-purity strontium carbonate |
| CN109336155A (en) * | 2018-11-02 | 2019-02-15 | 中国科学院青海盐湖研究所 | A kind of recoverying and utilizing method of strontium slag |
| CN110355189A (en) * | 2019-08-14 | 2019-10-22 | 青海民族大学 | A method of leaching strontium salt from strontium slag |
| CN112941340A (en) * | 2021-01-28 | 2021-06-11 | 重庆庆龙新材料科技有限公司 | High-purity metal strontium and preparation method thereof |
| CN113387373A (en) * | 2021-07-05 | 2021-09-14 | 湖北省宏源药业科技股份有限公司 | Slag treatment method |
-
2007
- 2007-07-17 CN CNB2007100250007A patent/CN100497178C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 中国工业碳酸锶生产现状及发展方向. 张庆雳等.无机盐工业，第37卷第8期. 2005 |
| 中国工业碳酸锶生产现状及发展方向. 张庆雳等.无机盐工业，第37卷第8期. 2005 * |
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