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Development of Mass Production Process of Singing Sand

鸣砂批量生产工艺的开发

基本信息

批准号：
08650885
负责人：
HASEGAWA Masahiro
金额：
$ 1.28万
依托单位：
Yamagata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650885/
关键词：
Singing Sand Quartz Washing Sound Characteristics Frequency Analysys Sound Pressure Seaside Pollution Fine Particle

项目摘要

It is the purpose of this study to design a mass production process of singing sand because of the recovery of singing sand which lost "sound" by seaside pollution. Although there are many washing methods to change silica sand into singing sand, various washing experiments of silica sand-water slurry were carried out using a washing machine with a horizontally shaking motion mechanism in this study. The silica sand used was from Osodani in Iide town of Yamagata prefecture. The degree of cleanness of washed silica sand was evaluated by measuring sound pressure emmitted from the sand bed into which a glass rod was penetrated.The principle results obtained are as follows : 1.Silica and emitted singing sound by washing for a long time. 2.Washing time was reduced by the pretreatment of ultrasonication and by the addition of surfactant. 3.The optimum concentration of silica sand for washing effect existed. 4.Silica sand with the size smaller than 300mum did not emit singing sound. 5.The removed particles by washing were the fine particles of silicate mineral with the range of 0.2-100mum. 6.Washing of silica sand was promoted at higher velocity revolution of washing machine. 7.Washing mechanism was due to the shear stress between silica sand and water and to the contact interactoin between silica particles. 8.The washing machine using water stream is considered to be effective to produce singing sand.

为回收因海边污染而失去“声音”的鸣沙，设计一套鸣沙的规模化生产工艺，是本研究的目的。虽然将硅砂转化为歌唱砂的洗矿方法很多，但本研究采用水平振动运动机构的洗矿机对硅砂-水浆进行了多种洗矿实验。使用的硅砂来自山形县井得镇的Osodani。通过测量玻璃棒穿过的砂床发出的声压来评价水洗硅砂的清洁程度。得到的主要结果如下：1.实验结果表明：长时间洗涤，会发出歌声。2.超声波预处理和表面活性剂的加入缩短了洗涤时间。3.存在适合水洗效果的最佳硅砂浓度。4.粒径小于300mum的硅砂没有发出鸣声。5.水洗去除的颗粒为硅酸盐矿物的细颗粒，粒径在0.2 ~ 100mum之间。6.在较高的洗机转速下，促进了硅砂的洗矿。7.水洗机理是由于硅砂与水之间的剪切应力和硅颗粒之间的接触相互作用。8.采用水流的洗砂机被认为是生产唱砂的有效方法。