发明名称 |
DECOMPOSITION AND REMOVAL METHOD OF AMMONIA NITROGEN IN NICKEL SULFATE AQUEOUS SOLUTION |
摘要 |
PROBLEM TO BE SOLVED: To provide a method of efficiently decomposing ammonia nitrogen in a nickel sulfate aqueous solution to nitrogen while restraining the formation of nitrate nitrogen. SOLUTION: In this decomposition and removal method of ammonia nitrogen in a nickel sulfate aqueous solution, chlorine gas is blown in the nickel sulfate aqueous solution containing ammonia nitrogen and the pH of the nickel sulfate aqueous solution is controlled not higher than 4.0. And the redox potential (based on the Ag/AgCl electrode) of the nickel sulfate aqueous solution is not lower than 900 mV. COPYRIGHT: (C)2005,JPO&NCIPI
|
申请公布号 |
JP2004277225(A) |
申请公布日期 |
2004.10.07 |
申请号 |
JP20030071316 |
申请日期 |
2003.03.17 |
申请人 |
SUMITOMO METAL MINING CO LTD |
发明人 |
KAKIMOTO MINORU;NISHIKAWA ISAO;TAKAISHI KAZUYUKI |
分类号 |
C01B3/04;C01G53/10;(IPC1-7):C01G53/10 |
主分类号 |
C01B3/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|