发明名称 |
METHOD FOR PRODUCING AQUEOUS SOLUTION OF PERRHENIC ACID FROM RHENIUM SULFIDE |
摘要 |
Provided is a method that enables high-purity perrhenic acid to be produced from crude rhenium sulfide using a dry process. This method for producing an aqueous solution of perrhenic acid includes: 1) a step in which roasting is performed on rhenium sulfide in the presence of an oxygen-containing gas, and gasified rhenium oxide is collected; 2) a step in which the rhenium oxide is cooled and solidified, while keeping sulfur oxides associated with the gasified rhenium oxide in a gaseous state, and then the purity of the rhenium oxide is increased by performing solid-gas separation; and 3) a step in which an aqueous solution of perrhenic acid is obtained by dissolving the solidified rhenium oxide in water, or by dissolving the solidified rhenium oxide in water after heating and gasifying the solidified rhenium oxide. |
申请公布号 |
WO2014103397(A1) |
申请公布日期 |
2014.07.03 |
申请号 |
WO2013JP64516 |
申请日期 |
2013.05.24 |
申请人 |
PAN PACIFIC COPPER CO.,LTD. |
发明人 |
SUMIDA,IKUNOBU;KAWANO,YUJI;HAMAMOTO,MAKOTO |
分类号 |
C01G47/00;C22B1/02;C22B3/44;C22B5/12;C22B61/00 |
主分类号 |
C01G47/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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