摘要
以十二烷基三甲基溴化铵(DTAB)、十四烷基三甲基溴化铵(TTAB)、十六烷基三甲基溴化铵(CTAB)和十八烷基三甲基溴化铵(OTAB)为捕收剂,通过纯矿物浮选试验、zeta电位、接触角和红外光谱(FTIR)测试研究了季铵盐碳链长度对石英和胶磷矿浮选分离效果的影响。纯矿物浮选试验表明,随着季铵盐碳链长度的增加,药剂对石英的捕收能力逐渐增强,顺序为OTAB>CTAB>TTAB>DTAB;季铵盐选择性捕收石英的能力随着碳链长度的增加先增加后减小,顺序为CTAB>OTAB>TTAB>DTAB。机理试验表明,随着季铵盐碳链长度的增加,石英表面zeta电位值增加越大,改变矿物表面接触角越大,石英表面疏水性增强;红外光谱测试表明季铵盐药剂物理吸附在石英表面。综合考虑捕收性和选择性,CTAB是石英和胶磷矿浮选分离的较优捕收剂。
In this paper,dodecyl trimethyl ammonium bromide(DTAB),tetradecyl trimethyl ammonium bromide(TTAB),Cetyl trimethyl ammonium bromide(CTAB)and octadecyl trimethyl ammonium bromide(OTAB)were used as collectors.The influence of carbon chain length of quaternary ammonium salt on the flotation separation effect of quartz and collophanite was studied through pure mineral flotation test,zeta potential,contact angle test and infrared spectrum test.Pure mineral flotation test shows that with the increase of the carbon chain length of quaternary ammonium salt,the collecting ability of the reagent to quartz gradually increases,the order is OTAB>CTAB>TTAB>DTAB;The ability of quaternary ammonium salt to selectively collect quartz increases first and then decreases with the increase of carbon chain length of quaternary ammonium salt,the order is CTAB>OTAB>TTAB>DTAB.The mechanism test shows that the zeta potential value of quartz surface increases with the increase of the carbon chain length,the greater the contact angle of the mineral surface changes,the greater the hydrophobicity of the quartz surface increases;Infrared spectrum test shows that quaternary ammonium salt agent can be physically adsorbed on the surface of quartz.Considering the collectability and selectivity comprehensively,CTAB is a better collector for the flotation separation of quartz and collophanite.
作者
何东升
陈飞
李智力
邓杰
唐远
池汝安
He Dongsheng;Chen Fei;Li Zhili;Deng Jie;Tang Yuan;Chi Ru’an(School of Resources and Safety Engineering,Wuhan Institute of Technology,Wuhan,Hubei 430074;Hubei Three Gorges Laboratory,Yichang,Hubei 443007;Engineering Research Center of Phosphorus Resources Evelopment and Utilization of Ministry of Education,Wuhan Institute of Technology,Wuhan,Hubei 430074;Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Chengdu,Sichuan 610041)
出处
《非金属矿》
北大核心
2023年第2期61-64,共4页
Non-Metallic Mines
基金
国家重点研发计划项目(2019YFC1905801)
湖北省高等学校优秀中青年科技创新团队计划项目(T2021006)
湖北三峡实验室开放基金项目(SK211008)
磷资源开发利用教育部工程研究中心开放基金项目(LCX2021006)
武汉工程大学研究生教育创新基金项目(CX2021470)。
关键词
十六烷基三甲基溴化铵
石英
胶磷矿
浮选分离
碳链长度
cetyltrimethylammonium bromide
quartz
collophanite
flotation separation
carbon chain length
