产酸黑曲霉对高磷鲕状赤铁矿的脱磷能力分析  

Analysis of dephosphorization ability of acid producing Aspergillus niger to high phosphorus oolitic hematite

作　　者：胡纯 闪腾宇 张靖晗 肖耀东 HU Chun;SHAN Teng-yu;ZHANG Jing-han;XIAO Yao-dong(School of Chemical and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430023,China)

机构地区：[1]武汉轻工大学化学与环境工程学院,湖北武汉430023

出　　处：《武汉轻工大学学报》2022年第1期48-51,共4页Journal of Wuhan Polytechnic University

基　　金：湖北省教育厅科学技术研究计划青年人才项目(Q20131708).

摘　　要：为分析溶磷真菌对矿石中磷素的有效性影响,以鄂西某高磷鲕状赤铁矿为研究对象,对选育的一株黑曲霉进行微生物脱磷能力分析。研究结果表明,所选育的黑曲霉菌株具有较强的产酸能力,在浸出过程中能分泌主要含柠檬酸的多种有机酸。黑曲霉对高磷鲕状赤铁矿中的磷具有较强的脱除能力,在1%的矿浆浓度下脱磷率达81.37%,矿石中磷含量由0.85%降低至0.16%。相对于传统生物冶金中细菌浸出时间较长的缺点,真菌黑曲霉的脱磷周期只需要较短的12 d左右。本研究为微生物作用于矿石的浸出脱磷技术提供了有力的理论支持。To analyze the effect of phosphorus dissolving fungi on the availability of phosphorus in ore,by taking a high phosphorus oolitic hematite in Western Hubei as the research object,a selected Aspergillus niger was used to analyze the microbial dephosphorization ability.It was shown that the Aspergillus niger has a strong acid production capacity and during the leaching process,it can secrete a variety of organic acids mainly containing citric acid.Aspergillus niger has a strong capacity to remove phosphorus of the high-phosphorus oolitic hematite.At 1%pulp concentration,the dephosphorization rate is 81.37%,and the phosphorus content in the ore was reduced from 0.85%to 0.16%.In contrast to the shortcomings of the longer time taken by the bacteria in thaditional biological metallurgy,fungi Aspergillus niger has a shorter dephosphorization cycle only about 12 d.This study provides a strong theoretical support for the leaching and dephosphorization technology of ore by microorganisms.

关 键 词：黑曲霉 赤铁矿 生物浸出 脱磷 

分 类 号：TD981[矿业工程—选矿]