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A method to perform float-and-sink test for separation of coal samples of various densities and determination of ‘Probable Error’ and ‘Imperfection’
IOP SciNotes Pub Date : 2020-08-28 , DOI: 10.1088/2633-1357/abaf36 Sushobhan Pradhan 1 , Satyabrata Mohanta 2
IOP SciNotes Pub Date : 2020-08-28 , DOI: 10.1088/2633-1357/abaf36 Sushobhan Pradhan 1 , Satyabrata Mohanta 2
Affiliation
This article presents a detail experimental procedure to perform float-and-sink tests for classifying coal samples according to their densities. Moreover, this article emphasizes obtaining ‘partition curves’ for three different coal samples (heavy media bath, big barrel and small barrel), which helps in evaluating and demonstrating classifier performance. Calculations of independent variables such as ‘Probable Error’ and ‘Imperfection’ are also discussed for partition curve that helps in evaluating the effectiveness of various beneficiation equipment used for the upgradation of quality of coal received from different coal mines. It was observed that there is a tendency for the partition curves to steepen as the density of separation decreases. In other words, separations at lower density is sharper than separations at higher density.
中文翻译:
一种进行浮沉测试以分离各种密度的煤样品并确定“可能的误差”和“不完美”的方法
本文介绍了一个详细的实验程序,可根据煤样的密度对煤样进行浮沉试验。此外,本文着重于获得三种不同煤样(重质介质浴,大桶和小桶)的“分配曲线”,这有助于评估和证明分类器的性能。还讨论了分区曲线的“变量可能”和“不完美”等自变量的计算,该曲线有助于评估用于提高从不同煤矿接收的煤炭质量的各种选矿设备的有效性。观察到,随着分离密度的降低,分隔曲线趋于陡峭。换句话说,低密度的分离比高密度的分离更尖锐。
更新日期:2020-08-31
中文翻译:
一种进行浮沉测试以分离各种密度的煤样品并确定“可能的误差”和“不完美”的方法
本文介绍了一个详细的实验程序,可根据煤样的密度对煤样进行浮沉试验。此外,本文着重于获得三种不同煤样(重质介质浴,大桶和小桶)的“分配曲线”,这有助于评估和证明分类器的性能。还讨论了分区曲线的“变量可能”和“不完美”等自变量的计算,该曲线有助于评估用于提高从不同煤矿接收的煤炭质量的各种选矿设备的有效性。观察到,随着分离密度的降低,分隔曲线趋于陡峭。换句话说,低密度的分离比高密度的分离更尖锐。