不同类型微生物对低品位磷矿的溶解作用研究  

Dissolution of Low-Grade Phosphate Ore by Different Types of Microorganisms

作　　者：徐广 肖春桥 王琪[1,2] 冯波 池汝安[2,3] XU Guang;XIAO Chun-qiao;WANG Qi;FENG Bo;CHI Ru-an(School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, Wuhan 430205, Hubei,China;Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan430205, Hubei, China;Xingfa School of Mining Engineering, Wuhan Institute of Technology, Wuhan 430073, Hubei,China)

机构地区：[1]武汉工程大学环境生态与生物工程学院,湖北武汉430205 [2]武汉工程大学绿色化工过程教育部重点实验室,湖北武汉430205 [3]武汉工程大学兴发矿业学院,湖北武汉430073

出　　处：《矿冶工程》2019年第3期103-106,109,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51674178);武汉工程大学研究生教育创新基金(CX2017137)

摘　　要：通过磷矿样本富集、分离纯化、组合获得了菌群、单一菌株和复合菌株3种类型微生物,研究了3种类型微生物对低品位磷矿的溶解作用。结果表明,3种类型微生物在NBRIP培养基中均能有效溶解低品位磷矿,其对低品位磷矿的溶解作用与培养基pH值降低有关。红外光谱分析结果表明,在不同微生物的作用下矿物表面官能团变化相似,且培养基中可溶磷含量与3400~2500cm^-1处的吸收峰强度有一定相关性。在3种类型微生物中,以菌群的溶磷效果最佳,其次是复合菌株,单一菌株溶磷效果相对较差。Three types of microorganisms including microbial consortium,single bacterial strain and complex bacterial strains were obtained from phosphate ore samples by enrichment,separation and purification,as well as combination.And the dissolution of low-grade phosphate ore by these three types of microorganisms was studied.Results showed that the low-grade phosphate ore could be effectively dissolved in NBRIP medium by these three microorganisms,and the dissolution effect varied with the decreasing of pH value of medium.The infrared spectroscopy analysis showed the variations of the functional groups on the surface of minerals were similar under the action of different microorganisms,and the content of soluble phosphorus in the medium had something to do with the intensity of the absorption peak at 3 400~2 500 cm^-1.It was finally found that among the three different types of microorganisms,microbial consortium could bring in the best phosphate dissolution effect,followed by the complex bacterial strain and the single strain.

关 键 词：微生物浸出 低品位磷矿 溶解 菌群 单一菌株 复合菌株 

分 类 号：TD925[矿业工程—选矿]