| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for controlling a reaction in a sulfuration step, which can reduce the formation of substances adhering to the inner walls of reaction vessels, pipes, and the like without impairing the recovery rate of nickel, and which can therefore reduce the frequency of performing operations to remove substances adhering to the inner walls as compared to conventional techniques. <P>SOLUTION: The method for controlling the reaction in a sulfuration reaction step includes thw blowing of hydrogen sulfide gas into a sulfate salt solution containing at least nickel and the production of a nickel-containing sulfide and a barren solution, wherein the reaction temperature of the sulfuration reaction is controlled to be 60-70°C, and the pressure in the reaction vessel used for the sulfuration reaction is controlled to be 200-300 kPaG. <P>COPYRIGHT: (C)2012,JPO&INPIT |
