【摘要】 采用微波单模腔反应系统,研究了以石墨既作为吸波材料,又作为还原剂的磷石膏碳热还原反应。结果显示,n(C)/n(S)为44～46,反应温度为1 100℃以上,反应时间为15 min,硫酸钙的分解率可达87%。微波场中硫酸钙的反应速率高于普通碳热还原反应。更多还原

【Abstract】 By using the microwave single-mode cavity reaction system,the phosphogypsum carbon thermal reduction reaction by using graphite as wave absorbing material,and also as reducing agent is studied.The result shows that,when n(C)/n(S) is 44～46,reaction temperature is more than 1 100 ℃,reaction time is 15 min,decomposition rate of calcium sulfate can reach 87%.Reaction rate of calcium sulfate in microwave is higher than that of normal carbon thermal reduction reaction.更多还原