有机膦酸PBTCA在胶磷矿反浮选脱镁中的抑制性能研究  

Research on depressing capability of organophosphonic acid PBTCA in the reverse flotation of magnesium from collophanite

作　　者：肖庆渝 罗惠华[1] 刘闵新 王学岚 蔡忠俊 杨稳权[2,3] XIAO Qingyu;LUO Huihua;LIU Minxin;WANG Xuelan;CAI Zhongjun;YANG Wenquan(School of Resources&Safety Engineering,Wuhan Institute of Technology,Wuhan 430074,China;Yunnan Phosphate Group Co.,Ltd.,Kunming 650600,China;National Engineering and Technology Research Center Development and Utilization of Phosphorus Resources,Kunming 650600,China)

机构地区：[1]武汉工程大学资源与安全工程学院,湖北武汉430074 [2]云南磷化集团有限公司,云南昆明650600 [3]国家磷资源开发利用工程技术研究中心,云南昆明650600

出　　处：《生态产业科学与磷氟工程》2024年第11期18-22,共5页Eco-industry Science & Phosphorus Fluorine Engineering

基　　金：湖北省揭榜制项目(2021BEC029);湖北省技术创新重大项目(2018ACA153,2022ACA004);武汉工程大学研究生教育创新基金项目(CX2023188)。

摘　　要：为了研究小分子有机膦酸2-膦酸丁烷酸-1,2,4-三羧酸(PBTCA)与磷酸的反浮选抑制性能,以宜昌磷矿为研究对象,采用单一反浮选工艺进行实验研究。结果表明,小分子有机膦酸PBTCA具有较强的选择抑制性能。原矿的磨矿细度为<0.074 mm颗粒占比60.8%,采用单一反浮选一次粗选一次扫选中矿顺序返回粗选的闭路流程,粗选的硫酸、PBTCA、捕收剂LAA-D用量分别为12.0、1.0、0.9 kg/t,扫选硫酸用量为1.0 kg/t,获得的精矿w(P2O5)、回收率分别为31.14%、96.04%;精矿w(MgO)为0.85%,尾矿w(P2O5)仅为5.06%。说明在浮选过程以PBTCA为抑制剂,抑制性能优于磷酸,采用PBTCA作为抑制剂不仅提高了选矿指标,且药剂用量较低。In order to study the depressing capability of small molecule organic phosphonic acid 2-phosphonic acid butane-1,2,4-tricarboxylic acid(PBTCA)and phosphoric acid,the reverse flotation process is used for experimental research until.The experimental results show that small molecule organophosphonic acid PBTCA has strong selective depressing capability.After milled to a fineness of<0.074 mm accounting 60.8%,the pulp is processed by a single reverse flotation process,using once roughing once sweeping process the sequence ore returns to the closed-circuit process,the dosage of sulphuric acid,PBTCA,LAA-D optimized respectively at 12.0,1.0 and 0.9 kg/t added to roughing,the amount of sulphuric acid added to sweeping for 1.0 kg/t,and the obtained concentrate P2O5 content and recovery rate are 31.14%and 96.04%,respectively;The MgO content in the concentrate is 0.85%,and the P2O5 content in the tailings is only 5.06%.The use of PBTCA has better depressing capability than phosphoric acid.The use of PBTCA as a depressant not only improves the beneficiation index,but also reduces the dosage of reagents.

关 键 词：胶磷矿 反浮选 PBTCA 

分 类 号：TD97[矿业工程—选矿] TD923