| 超声粒度检测建模及其粒度分布反演计算 |
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| 引用本文： | 何桂春,倪文. 超声粒度检测建模及其粒度分布反演计算[J]. 北京科技大学学报, 2006, 28(12): 1101-1105 |
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| 作者姓名： | 何桂春 倪文 |
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| 作者单位： | 1. 北京科技大学土木与环境工程学院,北京,100083;江西理工大学资源与环境工程学院,赣州,341000
2. 北京科技大学土木与环境工程学院,北京,100083 |
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| 基金项目： | 国家科研院所技术开发研究专项基金 |
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| 摘 要： | 提出了在矿砂粒径尺寸级配情况下,不同粒径的筛下累积含量公式. 在分析超声衰减基本理论模型的基础上,将不同粒径的筛下累积含量集成到超声波衰减模型中,推导出超声波衰减与矿浆浓度、粒度之间的关系模型. 将所推导的模型结合实验和数据分析以确定超声波衰减与粒度分布的关系,且采用遗传算法反演计算获得矿浆中粒的粒度分布. 结果表明,反演的计算结果精度较高.
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| 关 键 词： | 矿浆 粒度分布 粒度检测 超声波衰减 建模 遗传算法 反演计算 超声波 粒度检测 建模 粒度分布 反演计算 particle size distribution calculation inverse technique ultrasonic particle size measurement 精度 结果 矿浆浓度 遗传算法 关系模型 数据分析 实验 结合 声波衰减 |
| 收稿时间： | 2005-09-01 |
| 修稿时间： | 2006-03-15 |
Mechanistic modeling for particle size measurement by ultrasonic technique and inverse calculation of particle size distribution |
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| HE Guichun,NI Wen. Mechanistic modeling for particle size measurement by ultrasonic technique and inverse calculation of particle size distribution[J]. Journal of University of Science and Technology Beijing, 2006, 28(12): 1101-1105 |
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| Authors: | HE Guichun NI Wen |
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| Affiliation: | 1. Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China; 2. Resource and Environmental Engineering School, Jiangxi University of Science and Technology, Ganzhou 341000, China |
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| Abstract: | The formula of cumulative weight percentage at different particle sizes, which was in the case of composite particle size distribution, was proposed. Based on analyzing the theoretical model of ultrasonic attenuation, the formula was integrated into the ultrasonic attenuation model, and the relation of ultrasonic attenuation to pulp density and particle size was derived. The correlation between ultrasonic attenuation and particle size distribution was given by combining experiments with data analysis, and an inverse parameters optimization method, genetic algorithm, was applied for particle size distribution. The result of inversely calculation shows that its precision is higher. |
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| Keywords: | mineral slurry particle size distribution particle size measurement ultrasonic attenuation modeling genetic algorithm inverse calculation |
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