JP2011126720A5 - - Google Patents
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- JP2011126720A5 JP2011126720A5 JP2009283556A JP2009283556A JP2011126720A5 JP 2011126720 A5 JP2011126720 A5 JP 2011126720A5 JP 2009283556 A JP2009283556 A JP 2009283556A JP 2009283556 A JP2009283556 A JP 2009283556A JP 2011126720 A5 JP2011126720 A5 JP 2011126720A5
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- filtrate
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- sodium silicofluoride
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Description
２−３．ケイフッ化ナトリウムの合成
上記２−２．のろ過液４１０ｋｇを１ｍ３の本体が鉄製で内面がポリプロピレンライニングされたジャケット付反応器に計り採り、反応器のジャケットに減圧蒸気を流して液温を４５℃に加熱した。
次に、液を攪拌しながら、炭酸水素ナトリウムの粉末１０３ｋｇ（ケイフッ化水素酸のモル数の２．３０倍）を炭酸ガスの発生を調整しながら、少しずつ添加した。添加終了後、３時間攪拌をした。そのとき、反応熱も発生して、反応温度は５８℃になった。
反応液を１日間放冷した。その後、結晶を遠心ろ過機で分離し後、乾燥させて、ケイフッ化ナトリウム９８．９ｋｇを得た。
その分析結果は、純度９９．５重量％、平均粒子径（ｄ５０）が１１３μｍであった。
また、ろ過液中のケイフッ化水素酸を分析したところ、その濃度は０．０１５重量％であった。
2-3. Synthesis of sodium silicofluoride 2-2. Body of the filtrate 410 kg 1 m 3 of heated picking weighed into a jacketed reactor whose inner surface is a polypropylene lined with iron, by passing a vacuum vapor to the reactor jacket at a liquid temperature of 45 ° C..
Next, 103 kg of sodium hydrogen carbonate powder (2.30 times the number of moles of silicofluoric acid) was added little by little while adjusting the generation of carbon dioxide gas while stirring the liquid. After completion of the addition, the mixture was stirred for 3 hours. At that time, reaction heat was also generated and the reaction temperature reached 58 ° C.
The reaction was allowed to cool for 1 day. Thereafter, the crystals were separated with a centrifugal filter and then dried to obtain 98.9 kg of sodium silicofluoride.
As a result of the analysis, the purity was 99.5% by weight and the average particle size (d50) was 113 μm.
Moreover, when the silicohydrofluoric acid in a filtrate was analyzed, the density | concentration was 0.015 weight%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009283556A JP5421088B2 (en) | 2009-12-15 | 2009-12-15 | Method for producing valuable materials and hydrochloric acid from waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009283556A JP5421088B2 (en) | 2009-12-15 | 2009-12-15 | Method for producing valuable materials and hydrochloric acid from waste liquid |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011115371A Division JP5495392B2 (en) | 2011-05-24 | 2011-05-24 | Method for producing valuable materials from waste liquid |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2011126720A JP2011126720A (en) | 2011-06-30 |
| JP2011126720A5 true JP2011126720A5 (en) | 2011-08-11 |
| JP5421088B2 JP5421088B2 (en) | 2014-02-19 |
Family
ID=44289746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009283556A Active JP5421088B2 (en) | 2009-12-15 | 2009-12-15 | Method for producing valuable materials and hydrochloric acid from waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5421088B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5770049B2 (en) * | 2011-08-29 | 2015-08-26 | 株式会社アナック | Method and apparatus for regenerating hydrofluoric acid-containing treatment liquid |
| KR20140053244A (en) * | 2012-06-05 | 2014-05-07 | 샤프 가부시키가이샤 | Process for producing zeolite a from aluminoborosilicate glass as raw material |
| JP6062003B1 (en) * | 2015-08-13 | 2017-01-18 | 株式会社アイザック | Separation and recovery of hydrofluoric acid from glass etching wastewater |
| CN111498861B (en) * | 2020-04-23 | 2022-07-26 | 无锡中天固废处置有限公司 | Polarizing plate waste liquid treatment method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3635643B2 (en) * | 2003-03-24 | 2005-04-06 | 西山ステンレスケミカル株式会社 | Waste liquid treatment method |
| JP5143440B2 (en) * | 2007-02-01 | 2013-02-13 | 森田化学工業株式会社 | Method and apparatus for separating and recovering acid components from waste liquid containing hydrofluoric acid, hydrochloric acid and silicohydrofluoric acid |
| JP5101121B2 (en) * | 2007-02-01 | 2012-12-19 | 森田化学工業株式会社 | Method and apparatus for separating and recovering acid components from waste liquid containing hydrofluoric acid and silicohydrofluoric acid |
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2009
- 2009-12-15 JP JP2009283556A patent/JP5421088B2/en active Active
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