Correlation between Average Gray Value (AGV) of coal froth image with its ash and vitrinite content. Issue 9 (3rd May 2017)

• Record Type: Journal Article
• Authors: Sahoo, Saroj Kumar; Suresh, Nikkam; Varma, A. K.
• Is Part Of: Energy sources. Volume 39:Issue 9(2017)
• Page Start: 893
• Page End: 898
• Publication Date: 2017-05-03
• Subjects: Ash -- Coal froth -- gray value -- image analysis -- vitrinite; Natural resources -- Periodicals; Energy consumption -- Periodicals; Energy consumption -- Climatic factors -- Periodicals; Energy conversion -- Periodicals; Energy conversion -- Environment aspects -- Periodicals; Power (Mechanics) -- Periodicals; 333.7905
• DOI: 10.1080/15567036.2016.1273280
• Languages: English
• ISSNs: 1556-7036

Abstract

ABSTRACT: In this study, an attempt is made for the offline prediction of ash and the vitrinite content of froth fraction using the image analysis technique. Average Gray Value (AGV) was used as the key parameter in this study. Time-wise froth images were captured during the experiment and processed in a computer, embedded with Matlab 7.0 software. A good correlation was obtained between AGV and ash content (R 2 ≡ 0.8309) and also with vitrinite maceral content in concentrate (R 2 ≡ 0.7166). Low gray value indicates dark froth with a low ash content of coal particles with high vitrinite maceral content, whereas high gray value represents bright froth with more water and high ash clay minerals in the froth.