CAJ | 학술논문

采用稀酸酸解反应工艺，利用机械活化-稀酸酸解反应耦合技术，在磁驱转动的球磨反应装置上进行了钛铁矿的酸解反应。考察了反应器旋转速率、酸矿比、球料比及硫酸浓度等对酸解反应的影响。结果表明，在硫酸质量分数为60%、酸矿比1.6：1、球料比10：1及反应温度90℃条件下，与原矿浸出反应空白实验相比，采用活化-浸出耦合反应的浸出速率明显提高，浸出2 h酸解率从32%提高到49%，所得钛液的稳定性大于450 mL。扫描电镜（SEM）及X射线衍射（XRD）表征结果表明，耦合反应使得矿物颗粒不断破碎、细化和脱落，使剩余未活化芯继续活化并不断反应浸出。
채용희산산해반응공예，이용궤계활화-희산산해반응우합기술，재자구전동적구마반응장치상진행료태철광적산해반응。고찰료반응기선전속솔、산광비、구료비급류산농도등대산해반응적영향。결과표명，재류산질량분수위60%、산광비1.6：1、구료비10：1급반응온도90℃조건하，여원광침출반응공백실험상비，채용활화-침출우합반응적침출속솔명현제고，침출2 h산해솔종32%제고도49%，소득태액적은정성대우450 mL。소묘전경（SEM）급X사선연사（XRD）표정결과표명，우합반응사득광물과립불단파쇄、세화화탈락，사잉여미활화심계속활화병불단반응침출。
With the technique ofthe coupling of mechanical activation and acid digestion, the reaction of the acid digestion of ilmenite was studied in a magnetically driven reactor filled with mill balls. The Effects of rotational rate of reactors, mass ratio of acid to ore, mass ratio of ball to ore and sulfuric acid concentration on acid digestion of ilmenite were investigated. The results indicated that coupling activation and leaching significantly enhanced the reaction. Under the conditions of H2SO4 mass fraction of 60%, mass ratio of acid to ore of 1.6:1, mass ratio of ball to ore of 10:1 and the reaction temperature of 90oC, the conversion of titanium extraction reached 49% in 2 h. The stability of the titanyl sulfate solution was more than 450 mL. The ore and leaching residual were characterized by scanning electron microscope(SEM) and X-ray diffraction(XRD). The results indicated that the coupling of mechanical activation and acid digestion led to the crushing and size reduction of the particles frequently, and the renewal of the particles, which kept the milling activation continued and the liquid-solid reaction continuously conducted forward.