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銅矿石虽然有很多种,但总的来講可分为兩大类:一氧化矿;二硫化矿。氧化矿直接送去冶煉,硫化矿必須經过焙燒,才能冶煉。焙燒就是,將矿石中的含硫量除去,矿石焙烧和准备好后,便可进行冶煉。 (一)硫化矿石的焙烧含硫的銅矿石种类很多,有斑銅矿、黄銅矿、輝銅矿、黝铜矿、硫砷铜矿和銅藍等。很多地方矿石未经焙燒就入爐冶煉,結果煉不出铜来,或者煉出冰铜但未看出显明征象而把它棄去,損失很大。目前焙燒的方法,是根据矿石性質,含硫量的多少,以及顆粒度等来解决。現在介紹一下灰窑焙燒爐的經驗如下: 1.焙燒窑的構造(图1):高3.2公尺,窑內徑1.0公尺,平底橢圓長軸1.8公尺,寬(短軸)1.5公尺,窑壁厚0.15公尺,腰阶离平底0.8公尺,腰阶寬,0.2公尺,用磚砌筑窑前門高0.8公尺,寬0.6公
Although there are many kinds of copper ore, but in general can be divided into two categories: monoxide ore; disulfide ore. Ore ore directly sent to smelting, sulfide ore must be roasted in order to smelt. Roasting is to remove the sulfur content of the ore, roasting ore and ready for smelting. (I) Calcination of Sulfide Ore There are many types of sulfur-bearing copper ores, including spot copper, chalcopyrite, chalcocite, tetrahedrite, arsenic copper and copper blue. In many places the ore was roasted into the furnace without roasting, resulting in no refining of copper, or refining of matte but did not see obvious signs of abandoning it with great loss. The current roasting method is based on the nature of the ore, the amount of sulfur content, as well as to solve the particle size. The following is the introduction of the experience of the kiln roaster: 1. Structure of roasting kiln (Picture 1): Height 3.2m, kiln diameter 1.0m, flat oval long axis 1.8m, wide (short axis) 1.5m Kiln wall thickness of 0.15 meters, waist level 0.8 meters from the flat, wide waist, 0.2 meters, with brick masonry front door 0.8 meters high, 0.6 km wide