电解锰渣锰和硫酸铵资源回收及无害化试验研究
|
摘要
利用具有洗涤功能的隔膜压滤机对电解锰渣资源回收和无害化处理进行了中试规模的试验研究。结果表明,电解锰渣中大部分的锰属于酸溶锰,容易被浸出,当利用阳极液浸出时间达到120 min时,酸溶性锰基本溶出。锰渣经过水洗可大幅降低其中的锰和硫酸铵含量,当水洗时间达到11 min时,洗涤水中的锰和硫酸铵浓度趋于稳定。采用p H值为11的碱液对锰渣进行洗涤,当洗涤时间达到5 min时,碱洗渣浸出毒性测试的浸出液中p H值、锰和氨氮的值均小于标准限值(GB 8978—1996),碱洗渣属于一类工业固废。
A pilot scale study on recovery and harmless treatment of electrolytic manganese residue was carried out by using a membrane filter press with washing function. The results showed that the most content of manganese in the residue was acid soluble,easy to be leached and when the leach time was 120 mins,the most acid soluble manganese was dissolved. Rinsing with water after the acid leaching could significantly lower the content of manganese and ammonium sulfate in the residue,and the concentration of manganese and ammonium of washing water became stable after 11mins' rinsing. After water washing,the residue was treated by alkaline solution( p H = 11) rinsing for 5 mins in order to neutralize the hazardous material in the residue,and the resulting alkali-washed residue could be considered as a type I industrial solid waste based on the toxicity leaching test.
A pilot scale study on recovery and harmless treatment of electrolytic manganese residue was carried out by using a membrane filter press with washing function. The results showed that the most content of manganese in the residue was acid soluble,easy to be leached and when the leach time was 120 mins,the most acid soluble manganese was dissolved. Rinsing with water after the acid leaching could significantly lower the content of manganese and ammonium sulfate in the residue,and the concentration of manganese and ammonium of washing water became stable after 11mins' rinsing. After water washing,the residue was treated by alkaline solution( p H = 11) rinsing for 5 mins in order to neutralize the hazardous material in the residue,and the resulting alkali-washed residue could be considered as a type I industrial solid waste based on the toxicity leaching test.
引文
[1]孟小燕,蒋彬,李云飞,等.电解锰渣二次提取锰和氨氮的研究[J].环境工程学报,2011,5(4):903-908.
[2]刘闺华,潘涔轩,朱克松,等.电解金属锰渣滤饼循环逆流洗涤试验研究[J].中国锰业,2010,28(2):36-38.
[3]刘作华,李明艳,陶长元,等.从电解锰渣中湿法回收锰[J].化工进展,2009,28(1):166-168.
[4]赵博超,王雪婷,朱克松,等.洗涤方式对电解锰渣中锰回收效率及无害化处理的影响[J].环境工程学报,2017,11(11):6103-6108.
[5]佘思,黄海燕,马泽宇,等.可用于建筑材料的电解锰渣性能试验研究[J].中国锰业,2017,35(1):123-125.
[6]杜金颖.锰渣废弃物在建筑材料上的应用研究[J].中国锰业,2017,35(4):130-132.
[7]吴建锋,宋谋胜,徐晓虹,等.电解锰渣的综合利用进展与研究展望[J].环境工程学报,2014,8(7):2645-2652.
[8]任学洪.电解锰渣制备锰肥技术研究[J].中国锰业,2017,35(3):145-147.
[9]吴霜,王家伟,刘利,等.电解锰渣综合利用评述[J].无机盐工业,2016,48(4):22-25.
[10]蒋明磊,杜亚光,杜冬云,等.利用电解金属锰渣制备硅锰肥的试验研究[J].中国锰业,2014,32(2):16-19.
[2]刘闺华,潘涔轩,朱克松,等.电解金属锰渣滤饼循环逆流洗涤试验研究[J].中国锰业,2010,28(2):36-38.
[3]刘作华,李明艳,陶长元,等.从电解锰渣中湿法回收锰[J].化工进展,2009,28(1):166-168.
[4]赵博超,王雪婷,朱克松,等.洗涤方式对电解锰渣中锰回收效率及无害化处理的影响[J].环境工程学报,2017,11(11):6103-6108.
[5]佘思,黄海燕,马泽宇,等.可用于建筑材料的电解锰渣性能试验研究[J].中国锰业,2017,35(1):123-125.
[6]杜金颖.锰渣废弃物在建筑材料上的应用研究[J].中国锰业,2017,35(4):130-132.
[7]吴建锋,宋谋胜,徐晓虹,等.电解锰渣的综合利用进展与研究展望[J].环境工程学报,2014,8(7):2645-2652.
[8]任学洪.电解锰渣制备锰肥技术研究[J].中国锰业,2017,35(3):145-147.
[9]吴霜,王家伟,刘利,等.电解锰渣综合利用评述[J].无机盐工业,2016,48(4):22-25.
[10]蒋明磊,杜亚光,杜冬云,等.利用电解金属锰渣制备硅锰肥的试验研究[J].中国锰业,2014,32(2):16-19.