| 简介 |
PROBLEM TO BE SOLVED : To provide a method capable of suppressing generation of non-granulated fine powder compared to conventional methods and improving granulation property even in a granulation treatment by mixing a return ore with a mixture raw material.SOLUTION : The granulation method of a mixture raw material containing a return ore has a process for adding moisture of 0.5 to 3.0 mass% (outer figures) to the return ore consisting of a sintered ore powder at 120°C or less, and a process for a granulation treatment by mixing the return ore to which the moisture is added with a mixture raw material A containing no return ore. In the invention, moisture preferably adhered to the return ore is dispersed in the mixture raw material via the return ore and generation of non-granulated fine powder is suppressed.SELECTED DRAWING : Figure 1 |
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