Depression of Starch on Fine Hematite Enhanced with Magnetic Seeding Aggregation

doi:10.12068/j.issn.1005-3026.2021.01.017

Abstract

Abstract: The depression effect of starch on fine hematite is poor during the reverse flotation of hematite. Flotation tests， EDLVO calculations， particle size analysis and SEM analysis were used to investigate the depression effect of starch on fine hematite with the assistance of magnetic seeding aggregation. The results showed that the depression effect of starch on hematite decreased with the decrease of hematite particle size. The addition of magnetite enhanced the depression effect， which became more obvious with the increase of magnetite particle size. The attraction between magnetite of different sizes and fine hematite leads to the aggregation of magnetite with hematite particles， and the larger the particle size of magnetite， the stronger the attraction is. The magnetic seeding aggregation increased the apparent particle size of fine hematite， thus strengthened the depression effect of starch on hematite.

Key words: hematite; starch; magnetite; magnetic seeding aggregation; interaction

CLC Number:

TD923

WANG Dong-hui， YIN Wan-zhong， YANG Bin， QIN Hong-bin. Depression of Starch on Fine Hematite Enhanced with Magnetic Seeding Aggregation[J]. Journal of Northeastern University(Natural Science), 2021, 42(1): 111-116.

References

[1]Liu W B，Liu W G，Wei D Z，et al.Synthesis of N，N-Bis (2-hydroxypropyl) laurylamine and its flotation on quartz［J］.Chemical Engineering Journal，2017，309: 63-69.
[2]Filippov L O，Severov V V，Filippova I V.An overview of the beneficiation of iron ores via reverse cationic flotation［J］.International Journal of Mineral Processing，2014，127: 62-69.
[3]Zhang X L，Gu X T，Han Y X，et al.Flotation of iron ores: a review［EB/OL］.(2019-11-19)［2020-03-16］.https://www.tandfonline.com/doi/abs/10.1080/08827508.2019.1689494.
[4]Luo X M，Lin Q Q，Wang Y F，et al.New insights into the activation mechanism of calcium species to quartz: ToF-SIMS and AFM investigation［J］.Minerals Engineering，2020，153: 106398.
[5]Xia W C，Yang J G.Reverse flotation of Taixi oxidized coal［J］.Energy & Fuels，2013，27(12):7324-7329.
[6]Jaiswal S，Tripathy S K，Banerjee P K.An overview of reverse flotation process for coal［J］.International Journal of Mineral Processing，2015，134: 97-110.
[7]Fu Y F，Yang B，Ma Y Q，et al.Effect of particle size on magnesite flotation based on kinetic studies and machine learning simulation［J］.Powder Technology，2020，376:486-495.
[8]Yang B，Yin W Z，Zhu Z L，et al.A new model for the degree of entrainment in froth flotation based on mineral particle characteristics［J］.Powder Technology，2019，354: 358-368.
[9]Yu Y X，Ma L Q，Cao M L，et al.Slime coatings in froth flotation: a review［J］.Minerals Engineering，2017，114: 26-36.
[10]李文博，周立波，韩跃新，等.改性聚丙烯酰胺对赤铁矿强磁选的影响［J］.东北大学学报(自然科学版)，2019，40(7):1002-1008.(Li Wen-bo，Zhou Li-bo，Han Yue-xin，et al.Effect of modified polyacrylamide on high intensity magnetic spearation of hematite［J］.Journal of Northeastern University(Natural Science)，2019，40(7):1002-1008.)
[11]Li W B，Zhou L B，Han Y X，et al.Effect of carboxymethyl starch on fine-grained hematite recovery by high-intensity magnetic separation:experimental investigation and theoretical analysis［J］.Powder Technology，2019，343:270-278.
[12]Li D，Yin W Z，Sun C B，et al.Aggregation characteristics of fine hematite and siderite particles in aqueous suspension［J］.Powder Technology，2020，368:286-296.
[13]李东，印万忠，孙春宝，等.赤铁矿的自载体作用及对浮选的影响［J］.工程科学学报，2019，41(11):1397-1404.(Li Dong，Yin Wan-zhong，Sun Chun-bao，et al.The self-carrier effect of hematite in the flotation［J］.Chinese Journal of Engineering，2019，41(11):1397-1404.)
[14]Yin W Z，Wang D H，Drelich J W，et al.Reverse flotation separation of hematite from quartz assisted with magnetic seeding aggregation［J］.Minerals Engineering，2019，139: 105873.
[15]Singh S，Sahoo H，Rath S S，et al.Recovery of iron minerals from Indian iron ore slimes using colloidal magnetic coating［J］.Powder Technology，2015，269: 38-45.
[16]邱冠周，胡岳华，王淀佐.颗粒间相互作用与细粒浮选［M］.长沙:中南工业大学出版社，1993.(Qiu Guan-zhou，Hu Yue-hua，Wang Dian-zuo.Interaction of particles and fine-grained flotation［M］.Changsha: Central South University of Technology Press，1993.)
[17]Yin W Z，Fu Y F，Yao J，et al.Study on the dispersion mechanism of citric acid on chlorite in hematite reverse flotation system［J］.Minerals，2017，7(11):221-232.
[18]杨斌，印万忠，付亚峰，等. 柠檬酸对微细粒绿泥石夹带行为的影响［J］.东北大学学报(自然科学版)，2019，40(4):569-574.(Yang Bin，Yin Wan-zhong，Fu Ya-feng，et al.Effect of citric acid on entrainment behavior of fine chlorite［J］.Journal of Northeastern University (Natural Science)，2019，40(4):569-574.)
[19]Yin W Z，Xue J W，Li D，et al.Flotation of heavily oxidized pyrite in the presence of fine digenite particles［J］.Minerals Engineering，2018，115: 142-149.
[20]Lu J W，Yuan Z T，Wang N L，et al.Selective surface magnetization of pentlandite with magnetite and magnetic separation［J］.Powder Technology，2017，317: 162-170.