我們目前冶煉的矿石是含銅品位在1～2％的均匀嵌布的氧化矿石,很难通过手选提高共品位,而且其中含二氧化硅均在45％以上,根据我矿的情况我們吸取了当地和外地土法炼銅的经验,创造了一种适合冶煉低品位矿石的爐型:“跃进爐”(图1)。图2是双胞爐,即两个爐子共用一个爐墙,建爐时省工省料,热损失小。缺点是一爐发生故障影响另一爐正常生产。(可参考本期封面照片) Our smelting ore is 1 ~ 2% copper grade imbedded oxide ore, it is difficult to improve the total grade by hand, and which contain more than 45% of the silica, according to mine conditions we absorb The local and foreign experience in indigenous copper refining created a suitable furnace for the smelting of low-grade ores: “leapfrog” (Figure 1). Figure 2 is a two-cell furnace, that is, two furnaces share a furnace wall, saving labor and saving materials when building a furnace, with little heat loss. The disadvantage is that one furnace failure affects the other furnace normal production. (Can refer to the current cover photo)