华一新
,
刘纯鹏
金属学报
在中性气氛及1473K的温度下,通过测定试样的失重及其组成,研究了SnS从SnO—FeO—SiO_2和SnO—FeO—CaO-SiO_2两种炉渣(混以FeS)中挥发的速率。研究表明,在硫化烟化过程中,SnO的挥发与SnS相比可以忽略不计,在炉渣中增加CaO可以加快SnS的挥发速率,挥发的微分速率方程可以表示为: -d(％Sn)/dt=k(％Sn)(％S)其中表观速率常数k分别为4.20×10~(-3)(SnO-FeO-CaO-SiO_2)和2.88×10~(-3)(SnO-FeO-SiO_2)
关键词:
SnS
,
slag
,
evaporation rate
,
fuming
HUA Yixin LIU Chunpeng Kunming Institute of Technology
,
Kunming
,
China
金属学报(英文版)
Under inert atmospheres and 1473 K,the evaporation rate of SnS from SnO-FeO- SiO_2 and SnO-FeO-CaO-SiO_2 slags mixed with FeS was investigated by measuring the weight Ioss and composition of samples.The experimental results show that dur- ing sulfide fuming process the evaporation of SnOfrom slags is negligible in comparison with that of SnS.Addition of CaOto slags can enhance the evaporation rate of SnS.The differential rate equation of evaporation may be expressed as: -d(%Sn)/dt=k(%Sn)(%S) where,the apparent rate constant k was found to be 4.20×10~(-3) for SnO-FeO-CaO- SiO_2 system and 2.88×10~(-3) for SnO-FeO-SiO_2 system,respectively.
关键词:
SnS
,
null
,
null
,
null
