Title:
A manufacturing method of Scorodite
Document Type and Number:
Japanese Patent JP6226235
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing scorodite as large particles efficiently and stably.SOLUTION: Provided is a method for producing scorodite where an Fe/As precipitate containing arsenic and iron is mixed in a solution containing sulfuric acid to form an acidic slurry or an acidic solution of pH 0.7 to 1.2, which is heated to form crystalline scorodite. The method for producing scorodite preferably uses an Fe/As precipitate formed by adding a sodium hydroxide solution to a material containing copper and arsenic, performing alkaline oxidative leaching by bubbling air therein, and adding a ferric compound to a solution containing arsenic formed by solid-liquid separation so that an Fe/As mole ratio becomes 0.9 to 1.1.
Inventors:
Milwaliev Linato
Satoru Okada
Satoru Okada
Application Number:
JP2014063644A
Publication Date:
November 08, 2017
Filing Date:
March 26, 2014
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
C01G49/00; C22B3/04; C22B3/44; C22B7/00; C22B15/00; C22B30/04
Domestic Patent References:
| JP2012518587A | ||||
| JP2011212588A | ||||
| JP2009018291A | ||||
| JP2009242935A | ||||
| JP2008126104A | ||||
| JP54160590A | ||||
| JP2014208338A |
Other References:
D. R. BAGHURST et al.,The Hydrothermal Microwave Synthesis of Scorodite: Iron(III) Arsenate(V) Dihydrate, FeAsO4・2H2O,J. Chem. Soc., Chem. Commun.,1995年,323-324.
藤田 哲雄,硫酸鉄(II)溶液からの酸化による大気圧下におけるscoroditeの生成,東北大学大学院環境科学研究科環境科学専攻 平成20年度学位論文
藤田 哲雄,硫酸鉄(II)溶液からの酸化による大気圧下におけるscoroditeの生成,東北大学大学院環境科学研究科環境科学専攻 平成20年度学位論文
Attorney, Agent or Firm:
Hiroshi Chiba