Title:
カルシウム化合物の製造方法
Document Type and Number:
Japanese Patent JP2011513163
Kind Code:
A
Abstract:
The present invention relates to a method for production of calcium compounds having very low content of phosphorus and boron from an impure calcium chloride, solution containing phosphorus and boron, which method comprises the following steps: a) addition of a FeCl3-solution to the calcium chloride solution, b) adjusting the pH of the solution by addition of a base to between 3 and 9.5 for precipitation of iron hydroxide, iron phosphate and boron compounds, c) removal of the solid precipitate from the solution in step b) obtaining a purified calcium chloride solution, d) precipitation of a calcium compound from the solution from step c), and e) separation of the calcium compound from the solution in step d).
Inventors:
Busset, Tolf Inn
Andersen, Ainal
Andersen, Ainal
Application Number:
JP2010544905A
Publication Date:
April 28, 2011
Filing Date:
January 07, 2009
Export Citation:
Assignee:
Elchem Soura Axierskap
International Classes:
C01F11/32; C01F11/02; C01F11/18; C01F11/46; C07C51/41; C07C55/06
Domestic Patent References:
| JPS292425B1 | ||||
| JPS4623491B1 | ||||
| JPH07267610A | 1995-10-17 | |||
| JP2005095785A | 2005-04-14 | |||
| JP2006346542A | 2006-12-28 | |||
| JP2010523450A | 2010-07-15 | |||
| JPS292425B1 | ||||
| JPS4623491B1 | ||||
| JPH07267610A | 1995-10-17 | |||
| JP2005095785A | 2005-04-14 | |||
| JP2006346542A | 2006-12-28 | |||
| JP2010523450A | 2010-07-15 |
Foreign References:
| KR20070109201A | 2007-11-15 | |||
| WO2000034182A1 | 2000-06-15 | |||
| KR20070109201A | 2007-11-15 | |||
| WO2000034182A1 | 2000-06-15 |
Attorney, Agent or Firm:
Takao Hamano
Teruichi Hirai
Teruichi Hirai