羧化壳聚糖对镍黄铁矿/蛇纹石浮选体系的作用机理OACSTPCD
Dispersion Mechanism on Flotation System of Pentlandite and Serpentine in the Presence of Carboxylation Chitosan
通过矿物浮选试验、沉降试验、动电位和DLVO理论计算,考察了羧化壳聚糖在蛇纹石/镍黄铁矿浮选体系中的聚集/分散作用,研究了羧化壳聚糖对颗粒间的分散作用机理.研究结果表明:蛇纹石颗粒通过异相凝聚罩盖于镍黄铁矿表面上,降低镍黄铁矿表面疏水性能,影响其可浮性;羧化壳聚糖消除了镍黄铁矿与蛇纹石颗粒间异相凝聚,提高镍黄铁矿/蛇纹石体系中镍黄铁矿的浮选回收率.在pH为8.5时,羧化壳聚糖对镍黄铁矿/蛇纹石颗粒间的分散作用显著,并且强于羧甲基纤维素;荷正电的蛇…查看全部>>
The aggregation/dispersion effect of carboxylation chitosan on flotation system of serpen-tine and pentlandite and its mechanism were studied by flotation experiments, sedimentation tests, zeta potential, and calculations of DLVO theory.The results show that the serpentine particles coat on the pentlandite surface by hetero-aggregation.It reduces the hydrophobicity of pentlandite sur-face and decreases the flotation recovery of pentlandite.The hetero-aggrega…查看全部>>
王洪岭
广东省资源综合利用研究所,广东广州510650;稀有金属分离与综合利用国家重点实验室,广东 广州510650
矿业与冶金
蛇纹石镍黄铁矿羧化壳聚糖分散作用机理
serpentinepentlanditecarboxylation chitosandispersionmechanism
《矿产保护与利用》 2018 (3)
112-116,5
广东省科技厅科技项目(2017B030314046、2017A070710200)广东省科学院专项(2016GDASPT-0307)
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