ENHANCEMENT OF THE SEDIMENTATION RATES OF FIBROUS SUSPENSIONS

ENHANCEMENT OF THE SEDIMENTATION RATES OF FIBROUS SUSPENSIONS
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提高纤维悬浮液的沉降速率

DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
B. Ramarao
B. Ramarao
中科院分区：
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文献类型：
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作者：
P. Kumar;B. Ramarao

文献摘要

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研究了大长径比细长棒状颗粒悬浮液的沉降特性。通过添加浮力颗粒促进剂来增强沉降速率的新技术被应用于这样的悬浮液。通过这种简单的技术，沉降速率可以提高许多倍。对于浓度约为0.5%的纤维悬浮液，已观察到沉降速度增加5至7倍。对实验数据进行统计分析，以建立沉降速度增强的相关性。沉积物体积不受浮力颗粒存在的影响。研究发现，具有浮力的颗粒表面能吸附一些表面活性剂。
The settling of suspensions of slender rod-like particles with large aspect ratios was studied. The novel technique of enhancement of sedimentation rates by the addition of buoyant particle promoters was applied to such suspensions. The settling rates could be increased by many times by this simple technique. Sedimentation velocity increases of between 5 to 7 times have been observed for fibrous suspensions of concentrations of about 0.5%. A statistical analysis of the experimental data was performed to establish a correlation for the enhancement in settling velocities. The sediment volume was unaffected by the presence of buoyant particles. The buoyant parjticles were found to adsorb some surfactants onto their surfaces.