Title:
廃棄物および副生物から炭酸カルシウムを調製する方法
Document Type and Number:
Japanese Patent JP2011523615
Kind Code:
A
Abstract:
The present invention concerns a method for producing calcium carbonate containing the steps of extraction of alkaline industrial waste or by-products using as a first extraction solvent an aqueous solution of a salt formed from a weak acid and a weak base, whereby a vanadium-enriched first residue is allowed to settle and a calcium-rich first filtrate is formed, filtration, whereby the first filtrate is separated from the first residue, carbonation of the calcium-rich first filtrate using a carbonation gas, whereby calcium carbonate precipitates and a second filtrate is formed, and a second filtration, whereby the calcium carbonate is separated from the second filtrate. Further, the present invention concerns a method for extracting calcium carbonate and vanadium from alkaline industrial waste or by-products.
Inventors:
Sebastian tail
Sanni Eroneva
Hannes Levitzel
Ron Zevenhoven
Justin Salminen
Carl-Johan Vogelholm
Esco Pelier
Sanni Eroneva
Hannes Levitzel
Ron Zevenhoven
Justin Salminen
Carl-Johan Vogelholm
Esco Pelier
Application Number:
JP2011511046A
Publication Date:
August 18, 2011
Filing Date:
May 29, 2009
Export Citation:
Assignee:
Aalto University Foundation
Obo academia
Obo academia
International Classes:
C01F11/18; B09B3/00; C22B3/04; C22B7/04; C22B34/22; C22B26/20
Domestic Patent References:
| JPS51109281A | 1976-09-28 | |||
| JP2005097072A | 2005-04-14 | |||
| JP2003512533A | 2003-04-02 | |||
| JPS57111215A | 1982-07-10 | |||
| JP2006142228A | 2006-06-08 | |||
| JPS51109281A | 1976-09-28 | |||
| JP2005097072A | 2005-04-14 | |||
| JP2003512533A | 2003-04-02 | |||
| JPS57111215A | 1982-07-10 | |||
| JP2006142228A | 2006-06-08 |
Attorney, Agent or Firm:
Samejima Mutsumi
Kyousei Tamura
Kitahara Yasuhiro
Kyousei Tamura
Kitahara Yasuhiro