新型脂肪酸类捕收剂在鞍山式铁矿低温浮选脱硅中的实验研究  

Novel Fatty Acid−based Collector in Low−temperature Desilication of Iron Ore by Flotation in Anshan City

作　　者：黄恩铭 宋宝旭 南楠 马芳源 徐新怡 王帅 施雨航 HUANG Enming;SONG Baoxu;NAN Nan;MA Fangyuan;XU Xinyi;WANG Shuai;SHI Yuhang(School of Mining Engineering,University of Science and Technology Liaoning,Anshan114001,Liaoning,China;Anqian Mining Co.,Ltd.,Ansteel Group,Anshan114043,Liaoning,China)

机构地区：[1]辽宁科技大学矿业工程学院,辽宁鞍山114001 [2]鞍钢集团鞍千矿业责任有限公司,辽宁鞍山114043

出　　处：《矿产保护与利用》2024年第2期80-85,共6页Conservation and Utilization of Mineral Resources

基　　金：辽宁省教育厅面上项目(LJKMZ20220650);辽宁省教育厅青年项目(LJKQZ20222340);辽宁科技大学博士启动项目。

摘　　要：采用复配的新型脂肪酸类耐低温捕收剂KDB-3,针对鞍山某选厂的混合磁选精矿进行了低温反浮选实验研究。结果表明,在混合磁选精矿铁品位为50.10%时,采用“一次粗选一次精选三次扫选”的反浮选流程,在矿浆温度10~15℃、抑制剂苛化淀粉用量650 g/t、活化剂氧化钙用量900 g/t、捕收剂用量1150 g/t、调整剂氢氧化钠用量为900 g/t(pH值=11.5)粗选条件下,使用油酸钠作为捕收剂仅获得铁精矿铁品位66.57%、回收率67.16%,而相同条件下KDB-3捕收剂获得了铁精矿铁品位67.80%、回收率87.46%,比油酸钠分别高1.23百分点、20.30百分点,展现了良好的分选效果。浮选闭路实验结果表明,新型捕收剂KDB-3在常温(25℃)下获得了铁品位67.90%、回收率89.18%的铁精矿,低温条件(10~15℃)下的浮选指标也基本一致,展示出了新型脂肪酸类捕收剂KDB-3在低温与常温条件下都适用的特点。该药剂实现了对鞍山市某选厂铁矿石的有效低温浮选。A low−temperature reverse flotation experimental study was carried out on the mixed magnetic concentrate from a processing factory in Anshan using a new fatty acid−based low−temperature resistant collector KDB−3.The results showed that the reverse flotation process of"one stage rougher flotation,one stage cleaning and three stage scavenging"was adopted for the mixed magnetic concentrate with 50.10%iron grade.When the roughing slurry temperature was 10~15℃,the dosage of inhibitor caustic starch was 650 g/t,the dosage of activator calcium oxide was 900 g/t,the dosage of collector was 1150 g/t,and the dosage of adjusting agent sodium hydroxide was 900 g/t,and the dosage of sodium hydroxide was 900 g/t(pH=11.5),an iron ore concentrate with iron grade of 67.80%and recovery of 87.46%was obtained using KDB−3,while only an iron ore concentrate with iron grade of 66.57%and recovery of 67.16%was obtained using sodium oleate as collector under the same experimental conditions,showing the remarkable effect of the novel collector.When the novel collector KDB−3 was used,an iron ore concentrates with an iron grade of 67.90%was obtained at room temperature(25℃),with a recovery of 89.18%,which was similar to the indexes under low−temperature conditions,indicating the applicability of the novel fatty acid type collector KDB−3 under both low−temperature and room−temperature conditions.Effective low−temperature flotation of iron ore from a processing plant in Anshan city was achieved.

关 键 词：反浮选 低温 捕收剂 铁矿石 赤铁矿 石英 

分 类 号：TD923.13[矿业工程—选矿] TD951.1