The Effect Of Removal Of Ni, The Removal Of Jinchuan Nickel Smelting Of Secondary Copper Concentrate And The New Solid Reductant

Jin-chuan Corporation is China' s biggest nickel production enterprise. Because of its own copper-nickel paragenesis ore, therefore it produces copper too. Copper system' s processing raw material is the copper-nickel milometer containing high sulfur called copper-concentrated ore which obtained after the filter separation, its main composition is Cu₂S, including few metals Ni and Fe, it is called smelted copper-concentrated ore in production.This paper discusses the technical process that uses smelted copper-concentrated ore to produce anode copper: the production process in self-heating stove, smelted copper-concentrated ore' s main chemical reaction in self-heating fuse, blowing thermodynamics research which occurs in the self-heating stove, the advantage and disadvantage on using self-heating stove to smelt smelted smelted copper-concentrated ore as well as how to reduce nickel content in coarse copper in the self-heating stove; The origin using kaldor stove to smelt copper-concentrated ore containing nickel, the structure and craftwork of the kaldor stove, the flow of the kaldor stove, the economical and technical appraisal on kaldor stove; The advantage and disadvantage of revolving anode furnace along with its structure, the reaction mechanism of coarse copper contenting nickel in the stage of oxidation and deoxidization in revolving anode furnace, the behavior and trend of nickel lying in smelted copper-concentrated ore in copper smelting system is founded . Nickel is doffed 11. 88% in the self-heating stove , it is removed 86. 28% in kaldor stove, 1. 84% nickel is removed in revolving anode furnace, thus it has realized the request to reduce nickel content to less than 1.2% in anode copper. Because nickel removing is mainly completed in the kaldor stove, thus nickel removing in the kaldor stove becomes very important, it needs the kaldor stove's temperature to control from 1200℃to 1250℃, it is essential for nickel' further removing at the oxidation process to maintain the peroxidation at the Kaldor stove. In addition in this paper I carry on a comparison on the target copper sample from July twenty-sixth 2005 to August-fourteenth 2005 which used the heavy oil as reducer and which used new coal based reducer as reducer from August first 2006 to August sixteenth 2006.1st.the best and the second best anode copper sample percentage of all products and the nickel containing in the products: the best and the second best anode copper sample deoxidized by heavy oil are only 54. 84%, but the best and the second best anode copper sample deoxidized by new coal based has already achieved 86.54% .The nickel content in anode copper deoxidized by heavy oil is 0.98% , it had fallen to 0.81% deoxidized by new coal based reducer.2nd. deoxidization cost: the cost to deoxidize a ton copper by heavy oil is not less than 20.34 yuan , at the same time it has reduced to 12.96 yuan to deoxidize by new coal based reducer, the range of fall reaches 36%.3rd. environmental pollution: when it was deoxidized by heavy oil massive black smokes would emit , it brought huge pollution to the environment , simultaneously posed raw material' s waste, at the same time worsened workers' operating environment; But after using the new reducer it no longer emitted any black smoke, the new reducer is completely utilized, the air quality has attained the first lingeman level.4th. deoxidized copper sample surface comparison: the copper sample surface deoxidized by new reducer is more smooth and flat , therefore it is also more advantageous to the following electrolysis work .We can see through the above comparisons, deoxidized effect by new coal based reducer is more excellent than that deoxidized by heavy oil.