| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a structure of a lance inserting hole part with which a long service life of the structure of a lance inserting hole part and near the lance inserting hole part, is planned, and the deterioration of gas-leakage and waste-acid developing ratio can be restrained for a long term. <P>SOLUTION: In the structure 20 for a lance inserting hole part, forming the lance inserting hole part 112 for inserting a lance 2 which injects reducing agent toward fused material stuck to the inner wall of a self-fluxing furnace for smelting a copper, on the furnace roof part of the uptake-part in the self-fluxing furnace; this structure for lance inserting hole part is provided with a water-jacket part 28 having a cylindrical circumferential wall, which forms the lance inserting hole part having the size enabling to insert the lance and cooling tube ways 42a, 42b arranged in the circumferential wall of the water-jacket part and enabling to flow cooling medium. <P>COPYRIGHT: (C)2012,JPO&INPIT |
