摘要
对固体石墨碳、Ｆｅ－Ｐ－Ｃ饮和熔体、ＣＯ２气体还原熔融磷渣中磷酸盐的反应动力学进行了研究。固体石墨碳还原碱度Ｂ为１．１、Ａｌ２Ｏ３含量约８．３％的熔融磷渣中磷酸盐的反应速度常数与温度的关系为ｋ＝１．１×１０＾３ｅｘｐ［－２１７３６０／（ＲＴ）］；在一定温度下反应速度常数随渣碱度增大而增大。Ｆｅ－Ｐ－Ｃ饮和熔体还原熔融磷酸盐的反应速度常数约比因体碳大１个数量级。
The kinetics of the reduction of phosphate in molten slag by solid carbon,carbon in liquid iron saturated with carbon and phosphorus and CO gas was studied. Under the conditions of slag basicity CaO/SiO2 = l. 1,and A12O3 around 8. 3% ,the reaction rate constant of reduction of phosphate in molten slag by solid carbon was expressed byThe rate constant increased with the slag basicity. The rate constant of phosphate reduction by carbon in liquid iron saturated with carbon and phosphorus was about ten times larger than that by solid carbon under the same conditions. The reduction rate by CO gas only depended on the flow rate of CO gas. Its reduction reaction was close to thermodynamic equilibrium.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1994年第3期265-271,共7页
CIESC Journal
基金
中国科学院及国家自然科学基金委联合资助项目
关键词
磷
磷酸盐
磷矿石
熔融还原
动力学
phosphorus,phosphate,phosphorus ore, smelting reduction,kinetics
