玉米秸秆还原浸出软锰矿优化试验研究
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摘要
通过单因素试验和正交试验,研究了玉米秸秆在酸性条件下的水解及还原浸出软锰矿,考察了硫酸用量、水解时间、水解温度、还原剂用量对锰浸出率的影响。结果表明:对50g软锰矿,在硫酸用量40mL、水解时间2h、水解温度90℃、还原剂用量30g条件下进行浸出,锰浸出率可达96%以上,浸出效果较好。
The hydrolysis of corn stalk under acidic conditions by orthogonal experiments and single factor experiments were studied.The influence of the amount of sulfuric acid,hydrolysis time,hydrolysis temperature and the reductant usage on leaching rate of manganese were investigated.The results show that the leaching rate of manganese can reach more than 96% when pyrolusite mass is 50 g,sulfuric acid usage is 40 mL,hydrolysis time is 2h,temperature is 90℃and reductant usage is 30 g.The leaching effect is good.
The hydrolysis of corn stalk under acidic conditions by orthogonal experiments and single factor experiments were studied.The influence of the amount of sulfuric acid,hydrolysis time,hydrolysis temperature and the reductant usage on leaching rate of manganese were investigated.The results show that the leaching rate of manganese can reach more than 96% when pyrolusite mass is 50 g,sulfuric acid usage is 40 mL,hydrolysis time is 2h,temperature is 90℃and reductant usage is 30 g.The leaching effect is good.
引文
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[2]梅光贵,张文山,曾湘波,等.中国锰业技术[M].长沙:中南大学出版社,2011.
[3]李进中.生物质还原浸出氧化锰矿石的过程与机理[D].长沙:中南大学,2012.
[4]李同庆.低品位软锰矿还原工艺技术与研究进展[J].中国锰业,2008,26(2):4-14.
[5]袁明亮,梅贤功,陈荩,等.软锰矿浸出工艺的研究及进展[J].矿产保护与利用,1995(3):39-42.
[6]NAIK P K,SUKLA L B,DAS S C.Aqueous SO2leaching studies on Nishikhal manganese ore through factorial experiment[J].Hydrometallurgy,2000,54(2/3):217-228.
[7]贺山明,汪金良,陈艺琳.用硫化铅精矿还原酸浸低品位软锰矿试验研究[J].湿法冶金,2015,34(2):105-108.
[8]JIANG T,YANG Y,HUANG Z,et al.Simultaneous leaching of manganese and silver from manganese-silver ores at room temperature[J].Hydrometallurgy,2003,69(1/2/3):177-186.
[9]ZHANG W,CHENG C Y.Manganese metallurgy review:PartⅠ:leaching of ores/secondary materials and recovery of electrolytic/chemical manganese dioxide[J].Hydrometallurgy,2007,89(3/4):137-159.
[10]李珞名,赵博超,王雪婷,等.木薯渣-硫酸法浸出低品位软锰矿试验研究[J].湿法冶金,2015,34(6):461-465.
[11]SU H,WEN Y,WANG F,et al.Reductive leaching of manganese from low-grade manganese ore in H2SO4using cane molasses as reductant[J].Hydrometallurgy,2008,93(3/4):136-139.
[12]许颖,韩洪玲,王金凤.二种测定纤维素含量方法的比较与分析[J].黑龙江粮食,2002(3):41-46.
[13]常伟.低品位软锰矿还原浸出过程及其动力学研究[D].长沙:中南大学,2014.