摘要
本文利用多元氧化物炉渣相图和计算"准二元系"——氟化钙和氧化物共晶成份的经验公式,确定了适用铸铁电渣重熔的低熔点渣系.ZS-2型渣系的组成是:CaF_2 45-50%,CaO15—20%,SiO_2 15—20%,Al_2O_3 10-15%,MgO 5—12%.该渣的熔化温度为1100℃,比电导为3.03Ω^(-1)cm^(-1)(1600℃),粘度为0.0418PaS(1550℃).试验结果表明,ZS-2型渣可以满足铸铁电渣工业生产的要求.
To satisfy requisition of the ESR processes,the composition of multicomponent slag systems used for the ESR is desirable to be close to the eutectic point composition in the slag phase diagram.Also the slag must presume proper physical properties required by the ESR processes,for exa- mple,melting point,specific conductivity and viscosity.For CaF_2-based multicomponent slag,it is still difficult to determine the composition of eutectic point of slag.Generally,the way of choosing the ESR slag compo- sition is the amount of elemental components,CuF_2,CaO and Al_2O_3,are decided first on the composition diagrams of the CaF_2-CaO-Al_2O_3 system, and then the secondary components,MgO,SiO_2 etc ,determined by experi- ence or through experiments.This paper describes a new method for choosing multi-component slag with low melting temperature. Based on the knowledge of phase diagrams of multi-component slag sys- tems and empirical formula for calculating eutectic composition of the pseu- dobinary slag system consisting calcium fluoride and oxides Floride=(toxides evtectic point)/(CaF_2 meiting point+toxide eutecticpoint)×100% the ZS-2 type of slag used for ESR of cast iron is given,which consists of CaF_2 45-50%,CaO 15-20%,SiO_2 15-20%,Al_2O_3 10-15% and MgO 5-12%.This slag melts at 1100℃(semi-sphere melting temperature),spe- cific conductivity being 3.03^(-1)cm^(-1) (1600℃) and viscosity 0.0418 Pas (1550℃).The experimental results suggests that the ZS-2 type slag is promising in application to ESR of cast iron in industry,
出处
《化工冶金》
CSCD
北大核心
1991年第4期363-369,共7页
