Study of the wall adhesive tensile contact of moist iron ore bulk solids
作者机构：School of Civil EngineeringEast China Jiaotong UniversityNanchang 330013China School of EngineeringThe University of NewcastleCallaghan 2308Australia
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2020年第18卷第3期
页 面：67-75页
核心收录：
学科分类：0819[工学-矿业工程] 081902[工学-矿物加工工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
主 题：Wet sticky material Adhesive tensile stress Wall linings Liquid bridge force Capillary stress Soil texture
摘 要：The adhesive tensile stress between moist bulk iron ore solids and wall surfaces are critical to control and avoid blockage in large throughput material handling plants.In this study,an experimental system was designed to investigate the adhesive tensile contact between a range of iron ore materials and wall lining specimens.The contact mechanism between the material specimen and the wall surface was initially characterised.The experimental results indicated that the adhesive tensile stress is dependent on both the moisture content and the applied major consolidation stress,with the former exhibiting more significant contribution to increasing the magnitude of stress.The surface roughness of the wall showed a negligible effect in determining the adhesive tensile stress.Additionally,the iron ore sample with a higher fines content was observed to be able to achieve a higher adhesive tensile stress compared to the coarse samples.Consequently,the insights resulting from the study demonstrated practical applicability through measures such as blending and/or beneficiation,which reduce the adhesive tensile stress and minimise blockages.
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