广西某低品位细粒锰尾矿浸出试验
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摘要
广西某锰尾矿锰品位10.26%,粒度较细,-0.074 mm占98.52%,锰铁氧化物中的锰和氧化锰分别占总锰的73.35%、21.15%。为高效回收利用该尾矿中的锰,采用直接酸浸法进行浸出试验。结果表明,在硫酸浓度4.5 mol/L、浸出温度90℃、搅拌速度250 r/min、固液比4∶1、浸出时间3 h、还原剂A用量15%的条件下,可获得锰浸出率95.00%的良好指标。试验结果可供该锰尾矿的回收利用参考。
The manganese grade of Manganese Tailings from Guangxi is 10. 26%,the grain size is fine,-0. 074 mm accounts for 98. 52%,Manganese in manganese oxide accounts for 73. 35% and manganese oxide accounts for 21. 15% of toal. In order to efficient recycle the manganese in the tailings,Leaching test was conducted by direct acid leaching method. Results showe that when sulfuric acid concentration of 4. 5mol/L,leaching temperature of 90 ℃,stirring speed of 250 r/min,solid-to-liquid ratio of 4∶ 1,extraction time of 3 houra,dosage of A as reducing agent of 15%,good indicator of manganese leaching rate of 95. 00% was obtained. The test results can provide reference for recycling the manganese tailings.
The manganese grade of Manganese Tailings from Guangxi is 10. 26%,the grain size is fine,-0. 074 mm accounts for 98. 52%,Manganese in manganese oxide accounts for 73. 35% and manganese oxide accounts for 21. 15% of toal. In order to efficient recycle the manganese in the tailings,Leaching test was conducted by direct acid leaching method. Results showe that when sulfuric acid concentration of 4. 5mol/L,leaching temperature of 90 ℃,stirring speed of 250 r/min,solid-to-liquid ratio of 4∶ 1,extraction time of 3 houra,dosage of A as reducing agent of 15%,good indicator of manganese leaching rate of 95. 00% was obtained. The test results can provide reference for recycling the manganese tailings.
引文
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[3]阿依努尔·努尔艾合买提,热伊莱·买买提,刘作华,等.电场强化锰矿尾矿湿法浸出行为研究[J].中国锰业,2014(4):18-22.
[4]陈泽宗,胡芳,毛拥军,等.某低品位锰矿还原焙烧—直接酸浸工艺研究[J].现代矿业,2013(5):28-30.
[5]程晨,粟海锋,王雨红,等.混生锰矿的直接酸浸法及其影响因素分析[J].有色金属:冶炼部分,2014(6):9-12.
[6]孟运生,徐晓军,王吉坤,等.贫锰矿细菌浸出试验研究[J].湿法冶金,2002,21(4):184-187.
[7]李巧双,何东升,刘星,等.某低品位细粒锰尾矿浮选试验研究[J].矿产保护与利用,2015(6):54-58.
[8]封志敏,宁顺明,余宗华,等.磁化还原焙烧工艺处理贫锰铁矿的研究[J].矿冶工程,2009,29(3):65-68.
[9]张汉泉,余永富,陆小苏,等.软锰矿悬浮还原焙烧工艺研究[J].中国矿业,2010,19(9):66-70.