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首页> 外文会议>International forum on powder technology application >Preparation and Characterization of Surface Modification of Sphalerite Concentrate with Sodium Lignosulfonate
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Preparation and Characterization of Surface Modification of Sphalerite Concentrate with Sodium Lignosulfonate

机译：用木质素磺酸钠浓缩素浓缩物表面改性的制备与表征

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摘要

In order to prevent sphalerite particles from coming together in leaching solution, and to reduce the loss of organic solvent, the surface modification of sphalerite concentrate with sodium lignosulfonate was investigated. The modified sphalerite concentrate particles were characterized by dispersion experiments, determination of adsorption rate of oil, determination of contact angle, FT-IR spectra and X-ray photoelectron spectra. The results showed that the modified sphalerite concentrate particles exhibited good dispersibility in water. The sedimentation volume reduced from 0.85 ml·g~(-1) to 0.61 ml·g~(-1). The adsorption rate of oil reduced from 0.15 ml·g~(-1) to 0.06 ml·g~(-1). The contact angle between sphalerite concentrate particles and water changed from 86.9° before modification to 32.7° after modification with sodium lignosulfonate. The checking results of FT-IR and XPS spectra indicated that some modification regents were coated on the particle surface. The modifier combined to sphalerite concentrate particle surface through the chemical bond, resulting in the comprehensive stability action of static and steric effect.
机译：为了防止闪锌矿颗粒在浸出溶液中聚集在一起，并降低有机溶剂的损失，研究了与木质素磺酸钠硫酸钠浓缩物的表面改性。通过分散实验表征改性的斯普利特浓缩物颗粒，测定油的吸附速率，接触角，FT-IR光谱和X射线光电子光谱的测定。结果表明，改性的闪锌矿浓缩物颗粒在水中表现出良好的分散性。沉积体积从0.85ml·g〜（-1）降低至0.61ml·g〜（-1）。油的吸附速率从0.15ml·g〜（-1）降至0.06ml·g〜（-1）。在用木质素磺酸钠改性后改变至32.7°之前，斯普利氏浓缩物颗粒和水之间的接触角从86.9°变为32.7°。 FT-IR和XPS光谱的检查结果表明，一些修饰度计涂覆在颗粒表面上。改性剂通过化学键合并斯普利氏浓缩颗粒表面，导致静态和空间效果的综合稳定性作用。

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