摘要
为了清洁高效利用湿法磷酸生产得到的萃余酸,创新性地提出将其应用于磷矿浮选过程。在磨矿细度、捕收剂用量、pH几乎不变条件下,萃余酸全部取代硫酸的闭路浮选后,获得P_(2)O_(5)品位为29.73%、MgO品位为0.78%,P2O5回收率为88.55%的浮选精矿。用萃余酸作为磷矿反浮选pH调整剂,用量远低于硫酸,为磷矿企业萃余酸循环利用提供了新思路。
The raffinate acid obtained from the production of wet-process phosphoric acid for clean and efficient utilization is innovatively used in the flotation of phosphate ore.The flotation concentration with the P2O5 grade of 29.73%,the MgO grade of 0.78%and the P_(2)O_(5) recovery of 88.55%is obtained under the condition of stable grinding fineness,collector dosage,pH after the closed-circuit flotation where the raffinate acid completely replaces the sulfuric acid.The raffinate,whose dosage is much lower than sulfuric acid,is used as pH regulator for reverse flotation of phosphate ore,which provides a new idea for recycling raffinate in phosphate mining enterprises.
作者
张波
王静明
郑永兴
ZHANG Bo;WANG Jingming;ZHENG Yongxing(Yunnan Phosphate Chemical Group Haikou Phosphorus Co.,Ltd., Kunming 650113, China;State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China)
出处
《矿产保护与利用》
2021年第1期61-65,共5页
Conservation and Utilization of Mineral Resources
关键词
萃余酸
磷矿
反浮选
raffinate acid
phosphate ore
reverse flotation
