摘要
采用新型贫化炉(Φ3.6m×8.1 m),在熔炼温度分别是1200℃、1 250℃,沉降时间分别为30min、60min,Fe/SiO_2=1.7~1.9的条件下,考察了熔剂、硫化剂和还原剂等对渣贫化效果的影响。结果表明,在铜原始熔炼渣中加入SiO_2、B_2O_3或CaF_2时,可增加冰铜的沉降分离效果。而FeS的加入对铜的回收几乎没有影响,但它能够和氧反应产生工艺所需热量,还能减少尖晶石相和渣中铜的溶解。在优化的综合条件下,氧气与天然气比值控制在1.6时,弃渣含铜可达到0.26%。
Effects of flux,vulcanizing agent and reductant on slag dilution in new-type Dilution Furnace were investigated under the conditions including smelting temperature of 1 200 ℃ and 1 250 ℃,settling time of 30 min and 60 min,and Fe/SiO2=1.7~1.9.The results show that addition of SiO2,B2O3 or CaF2 into original copper smelting slag can improve settling separation effect.Though no effect on copper recovery,addition of FeS can provide heat required by reaction with oxygen and reduce copper dissolution in spinel phase and slag.Copper content in discarded slag can be controlled at 0.26% under the optimum comprehensive conditions with ratio of oxygen to natural gas of 1.6.
作者
边瑞民
王智
魏传兵
赵宝军
BIAN Rui-min;WANG Zhi;WEI Chuan-bing;ZHAO Bao-jun(Dongying Fangyuan Nonferrous Metals Co. , Ltd, Dongying 257091, Shandong, China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2018年第4期10-14,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
国家国际科技合作专项(2013DFA70620)
关键词
贫化炉
熔剂
硫化剂
还原剂
渣含铜
Dilution Furnace
flux
vulcanizing agent
reductant
copper in discarded slag
