论文部分内容阅读
焙烧部分 (一)本厂矿石性质概述: 本厂的矿石是硫化矿与氧化矿夾杂在一起,硫化矿約占20％左右,以斑銅矿为主,黄銅矿次之,尚未发現輝銅矿,氧化矿絕大部分是孔雀石,蓝銅矿次之。原矿品位估計含銅0.8～1.2％,如果不絕选矿,在冶煉上会带来很大困难,所以采取了人工碎矿、手选,將大部分脉石选出,經手选后品位大約在4～5％。人工手选很难將硫化矿与氧化矿分开,如果不經焙烧进行熔煉,就会产出大部分冰銅,由冰銅再煉成粗銅过程很麻煩,而且銅的損失很大。根据实踐証明,焙燒过的矿石进行熔煉,冰銅的产出量很少。为此,手选后的矿石需經焙燒,以满足冶煉的需要。焙燒中有大量硫化物气体排出,其中含有毒性,对人体及农作物都有很大的害处,因此焙燒地点应选出背风的地方,附近沒有人家和大片农作物,地势寬坦以便操作和推广。
Roasting (a) Overview of the nature of the factory ore: Our ore is sulfide ore and oxide inclusions together, sulfide ore accounts for about 20%, mainly to the berylite, chalcopyrite second, has not found the Hui Copper ore, most of the mineral is malachite, blue second. The ore grade is estimated to contain 0.8-1.2% copper. If it is not treated, there will be great difficulties in the smelting process. Therefore, artificial crushing and hand sorting will be adopted to select most of the gangue, and the selected grade will be about 4 ~ 5%. It is difficult to separate the sulphide ore from the oxide ore by manual selection. If it is not smelted by roasting, most of the matte copper is produced. The process of converting the matte copper into copper sulphate is very troublesome, and the loss of copper is very great. According to the practice, roasted ore is smelted and the output of matte is very small. To do this, hand-selected ore roasting needs to meet the needs of smelting. There is a large amount of sulfide gas to be discharged during roasting, which is toxic. It has great harmful effects on human body and crops. Therefore, the leeward place should be selected at the place of roasting. There are no nearby people and large crops in the vicinity of the rooftop for operation and promotion.