摘要
基于吉布斯最小自由能原理,建立基于时间离散的倾动炉杂铜精炼过程的动态多元多相平衡热力学模型。在与生产实践相同熔炼温度、风量、氧化及还原时间等操作工艺条件下,模拟计算各周期的各相组分含量。与生产数据相比,氧化造渣期粗铜相中Cu含量(质量分数)的绝对误差为0.050%,相对误差为0.050%;O含量的绝对误差为0.012%,相对误差为2.638%。还原期粗铜相中Cu含量的绝对误差为0.042%,相对误差为0.042%;0含量的绝对误差仅为0.006%,相对误差为4.267%。炉渣相中Cu、Fe含量绝对误差分别为1.052%和0.504%,相对误差分别为2.782%和5.143%。该模型基本能够反映倾动炉杂铜精炼过程中各相杂质的分布情况,可为倾动炉杂铜精炼中杂质分配规律的研究提供理论依据。
Based on the principle of Gibbs free energy minimization,a multicomponent and multiphase equilibrium thermodynamic model of scrap copper refined by tilting furnace based on time discretization was built.The contents of each component in every period were calculated at the same process conditions with production test,such as smelting temperature,air volume,oxidation time and reduction time.Compared with the production data,the absolute error of the Cu content（mass fraction） in blister copper of oxidation period is 0.050%,and its relative error is 0.050%;the absolute error of O content is 0.012%,and its relative error is 2.638%.The absolute error of Cu content in blister copper of reduction period is 0.042%,and its relative error is 0.042%;the absolute error of O content is 0.006%,and its relative error is 4.267%.The absolute errors of Cu and Fe contents in slag are 1.052%and 0.504%;the absolute errors of Cu and Fe contents in slag are 2.782%and 5.143%.This model can basically reflect impurities distribution of the refining process of scrap copper by tilting furnace,which can provide theory basis for research on impurities distribution of scrap copper refined by tilting furnace.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2015年第12期3513-3522,共10页
The Chinese Journal of Nonferrous Metals
基金
江西省"赣鄱英才555工程"青年拔尖人才培养计划(赣组字2013[58]文)
江西省自然科学基金资助项目(20122BAB20602)
关键词
倾动炉
杂铜精炼
动态多相平衡
时间离散
tilting furnace
scrap copper refining
dynamic multi-phase equilibrium
time discretization
