Study on the Flotation Performance of Quartz and Magnetite Using Amidoxime as Collector
-
摘要:
采用羟胺法合成了3-十二烷基氨基丙偕氨肟(简称DAPA)作为铁矿反浮选捕收剂。通过单矿物浮选试验,考察了DAPA和十二胺对石英和磁铁矿的浮选特性,结果表明,在矿浆pH为4~6.5的条件下,DAPA捕收剂对石英的回收率可达到85%以上,同时在此条件下对磁铁矿的回收率均不超过20%,选择性能明显优于十二胺。用DAPA对石英和磁铁矿的人工混合矿进行反浮选,在不添加抑制剂的情况下,浮选精矿中TFe品位可达68.78%,可以应用于磁铁矿的脱硅浮选中。Zeta电位测试和红外光谱分析结果显示,DAPA在石英和磁铁矿表面的吸附主要为物理吸附。
Abstract:3-(dodecylamino)-N'-hydroxypropanimidamide (DAPA) was synthesized using hydroxylamine method as a reverse flotation collector for iron ore. Micro-flotation tests were employed to detect quartz and magnetite minerals' flotation behaviors using DAPA and lauryl amine as collectors. The results showed that regulating the pulp pH as 5~6.5, DAPA collector could recover more than 85% of quartz and less than 20% of magnetite, the selectivity was obviously better than dodecylamine. The reverse flotation tests on the artificial mixed ores of quartz and magnetite were made, enhancing the grades of iron to 68.78% without any other reagents added. It could be used in desiliconization flotation of magnetite. The Zeta potential measurements and infrared spectroscopy results showed that DAPA adsorption on quartz and magnetite surface is mainly physical absorption.
-
Key words:
- amidoxime collector /
- magnetite /
- quartz /
- reverse flotation
-
表 1 人工混合矿浮选试验结果 /%
Table 1. Flotation test results of the artificial mixed ore
Product Weight Grade Recovery TFe SiO2 TFe SiO2 Tailings 61.23 12.65 79.71 22.50 97.61 Concentrates 38.77 68.78 5.02 77.50 3.39 Feed 100.00 34.41 50.00 100.00 100.00 -
[1] 余永富.我国铁矿矿冶形势及技术发展现状[J].矿产保护与利用, 2005(6):43-46. doi: 10.3969/j.issn.1001-0076.2005.06.013 http://kcbh.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=3ce4a752-ddbe-4acc-9f9f-6c42805ec90f
[2] A·c·阿鲁吉欧, 周廷熙, 李长根.铁矿浮选药剂[J].国外金属矿选矿, 2006, 43(2):4-7. http://d.old.wanfangdata.com.cn/Periodical/zgky200702033
[3] 任建伟.铁矿石高效反浮选药剂理论和应用研究[D].长沙: 中南大学, 2004.
http://cdmd.cnki.com.cn/article/cdmd-10533-2004110827.htm [4] Vieira A M, Peres A E C. The effect of amine type, pH, and size range in the flotation of quartz[J]. Minerals engineering, 2007, 20(10):1008-1013. doi: 10.1016/j.mineng.2007.03.013
[5] 张勇, 贺慧军, 王伟.弓长岭矿山公司铁精矿提铁降硅工艺的研究[J].矿冶工程, 2003, 23(1):34-37. doi: 10.3969/j.issn.0253-6099.2003.01.011
[6] 董颖博, 林海, 傅开彬, 等.某复杂难选铁矿石提铁降硅工艺研究[J].矿冶工程, 2011, 31(6):36-38. doi: 10.3969/j.issn.0253-6099.2011.06.010
[7] 罗良飞.袁家村闪石型磁铁矿选矿技术开发[J].矿产保护与利用, 2018(1):61-65. http://kcbh.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=01ebad28-c0db-4600-8858-f8b03b9c45c5
[8] 高林章, 王义达, 马厚辉.提高铁精矿铁品位降低SiO2含量的研究及应用[J].金属矿山, 2004(3):17-19. http://d.old.wanfangdata.com.cn/Periodical/jsks200403006
[9] 邹文博.几种阳离子捕收剂对氧化铁矿的反浮选性能研究[D].长沙: 中南大学, 2011.
http://www.wanfangdata.com.cn/details/detail.do?_type=degree&id=Y1914352 [10] 邱廷省, 张卫星, 方夕辉, 等.铁矿石阳离子反浮选技术研究进展及应用现状[J].金属矿山, 2012, 41(2):89-93. doi: 10.3969/j.issn.1001-1250.2012.02.026
[11] 蔡振波.阳离子捕收剂用于铁矿石反浮选提铁降硅的研究[D].赣州: 江西理工大学, 2010.
http://cdmd.cnki.com.cn/Article/CDMD-10407-2010040421.htm [12] 张慧丽.苯甲偕胺肟的合成与性能研究[D].长沙: 中南大学, 2014.
http://cdmd.cnki.com.cn/Article/CDMD-10533-1014406989.htm [13] Long D A. Infrared and Raman characteristic group frequencies:Third Edition[M]. Chichester:George Socrates John Wiley and Sons, Ltd., 2001.
[14] 蒋玉仁, 薛玉兰.甲基苯甲偕胺肟合成及其捕收性能研究[J].应用基础与工程科学学报, 2000, 8(3):230-235. http://d.old.wanfangdata.com.cn/Periodical/yyjcygckxxb200003002
[15] Huang Z G, Zhong H, Wang S, et al. Investigations on reverse cationic flotation of iron ore by using a Gemini surfactant:Ethane-1, 2-bis(dimethyl-dodecyl-ammonium bromide)[J]. Chemical engineering journal, 2014, 257(6):218-228. https://www.sciencedirect.com/science/article/pii/S1385894714009474
[16] Luo B, Zhu Y, Sun C, et al. The flotation behavior and adsorption mechanisms of 2-((2-(decyloxy)ethyl)amino)lauric acid on quartz surface[J]. Minerals engineering, 2018, 117:121-126. doi: 10.1016/j.mineng.2017.12.016
[17] 伍喜庆, 刘长淼, 黄志华.石英浮选的新型捕收剂-N-十二烷基-β-氨基丙酰胺[J].中南大学学报(自然科学版), 2005, 36(3):412-416. doi: 10.3969/j.issn.1672-7207.2005.03.013
[18] Li W, Wei S, Liu R Q. Mechanism of separating muscovite and quartz by flotation[J]. Journal of central south university. 2014, 21(9):3596-3602. doi: 10.1007/s11771-014-2341-5
[19] 贾静文.几种不同类型捕收剂对石英的捕收性能研究[D].沈阳: 东北大学, 2014.
http://cdmd.cnki.com.cn/Article/CDMD-10145-1016014384.htm [20] 王义刚, 聂小安.磁性固体酸催化剂S2O82-/ZrO2-TiO2-Fe3O4的制备及其催化合成乙酰丙酸[J].中南大学学报(自然科学版), 2016, 47(1):26-32. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zngydxxb201601005