一种测量宽筛分颗粒松堆密度的方法
By fluidizing particles in a fluidized bed and reducing the gas velocity to measure the bulk density of wide-sieve particles, the problem of incomparability of measurement results was solved, achieving unique determination of bulk density and good repeatability.
CN117233036BActive Publication Date: 2026-07-17QINGDAO UNIV OF SCI & TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO UNIV OF SCI & TECH
- Filing Date
- 2023-08-19
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies make it difficult to accurately measure the bulk density of wide-sieve particles, resulting in incomparable measurement results among different researchers and poor repeatability.
Method used
By fluidizing particles in a fluidized bed and reducing the gas velocity, the slump height of the particles at different gas velocities was measured, and the particle bulk density was plotted as a function of gas velocity. The maximum value was then taken as the loose bulk density.
Benefits of technology
It achieves a unique and definitive value for loose bulk density, improves the comparability of measurements among different researchers, and simplifies equipment investment and operation.
✦ Generated by Eureka AI based on patent content.
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Figure CN117233036B_ABST
Abstract
本发明公开了一种测量宽筛分颗粒松堆密度的方法，涉及颗粒物性测量技术领域。本发明包括如下步骤：取给定质量的颗粒装填到流化床中；在预设流速下对流化床中的颗粒进行预设时间的流化，使颗粒混合均匀，消除粒径差异分级；设置不同的气速降低速率，在每个气速降低速率下将预设流速降低到零，获取该气速降低速率下塌落床层的高度；根据不同气速降低速率下塌落床层的高度计算塌落床层的体积等步骤。本发明设计了一种对松堆密度进行表征的方法，通过本方法所表征的松堆密度具有唯一确定的数值，可使不同研究者的测量结果具有很好的可比性；本发明设计的松堆密度表征方法，所需设备简单，投资较小，操作简单。
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