CAJ | 학술논문

采用“玉米秸秆硫酸预处理—浸出”工艺处理含Mn 9.63%(质量分数)的朝阳锰矿.通过试验考察用硫酸对玉米秸秆进行预处理的时间、秸秆用量、温度、硫酸浓度和浸出温度对锰浸出率的影响.试验表明，在秸秆用量2.5 g、时间10 min、硫酸浓度1.2 mol/L、温度80℃时预处理秸秆，浸出温度为90℃的条件下，锰的浸出率达92%，杂质铁溶出率仅为20%.玉米秸秆处理前后FTIR分析结果表明，对秸秆进行硫酸预处理能够破坏难降解的木质素结构，有利于提高锰的浸出效果.
채용“옥미갈간류산예처리—침출”공예처리함Mn 9.63%(질량분수)적조양맹광.통과시험고찰용류산대옥미갈간진행예처리적시간、갈간용량、온도、류산농도화침출온도대맹침출솔적영향.시험표명，재갈간용량2.5 g、시간10 min、류산농도1.2 mol/L、온도80℃시예처리갈간，침출온도위90℃적조건하，맹적침출솔체92%，잡질철용출솔부위20%.옥미갈간처리전후FTIR분석결과표명，대갈간진행류산예처리능구파배난강해적목질소결구，유리우제고맹적침출효과.
Utilizing cornstalk pre-processing with sulfuric acid,leaching experiments were carried out to dispose of manganese ore containing Mn of 9. 63%.The effects of pre-process time, cornstalk dosage,pre-process temperature,concentration of sulfuric acid and leaching temperature on manganese dissolution were investigated.The results showed that in the condition of pre-process cornstalk with dilute acid at 80oC,2. 5 g of cornstalk and concentration of H2SO4 1. 2 mol/L for 10 minutes,leaching manganese using pre-processed cornstalk as a reductant for 90 minutes at 90℃could dissolve 92%of the manganese,and less than 20%Fe was dissolved.The FTIR analysis results indicated that cornstalk pre-processed with acid could destroy the structure of lignin,which is beneficial to leaching.