製鋼スラグからカルシウムを含有する固体成分を回収する方法、および回収された固体成分

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专利权人:

日新製鋼株式会社

发明人:

福居 康,浅場 昭広,松尾 正一,山本 雅也

申请号：

JP20150059468

公开号：

JP6263144(B2)

申请日:

2015.03.23

申请国别(地区):

日本

年份:

2018

代理人:

摘要：

The purpose of the present invention is to provide a method for recovering calcium-containing solid components from steelmaking slag, with which it is possible to easily increase the calcium recovery rate. With the method, steelmaking slag is immersed in an aqueous solution containing carbon dioxide, and calcium in the steelmaking slag is made to leach out into the aqueous solution. Next, the immersed steelmaking slag is removed from the aqueous solution, and, subsequently, the pH of the aqueous solution is increased. When solid components precipitated by doing so are recovered, it is possible to recover solid components containing 20 % or more by mass in terms of calcium atoms.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/