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Effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill

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Main Author: Siti Izatul Hawa, Khairol Salleh
Other Authors: Dr. Sri Raj Rajeswari, Munusamy
Format: Other
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2022
Subjects:
Hematite ores
Grinding
Metallurgy
Iron ore
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76962
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spelling my.unimap-769622022-11-15T01:10:21Z Effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill Siti Izatul Hawa, Khairol Salleh Dr. Sri Raj Rajeswari, Munusamy School of Materials Engineering Hematite ores Grinding Metallurgy Iron ore Access is limited to UniMAP community. Raw hematite ore from Kulim, Kedah was mechanically activated using physical technique of powder ball milling. Operational parameter during fine grinding of the hematite ore are ball to powder ratio (3:1, 5:1, 7:1), milling speed (300rpm and 400rpm) and time (1 hour) and media density may influence the specific surface area, particle size and morphology of the particles. Therefore, this research is to study the mechanically activated hematite ore powder associated with the ball-to-powder ratio and grinding media density in the fine grinding process for advance application. XRF analysis showed that the sample consist of 76.74% Fe2O3 which is in high grade iron ore classification. Ground hematite ore (29.192m2/g) at 300rpm and BPR 7:1 have higher surface area than raw (12.762m2/g) and calcine product (12.351m2/g). This is due to the reduction of particles size during milling which exhibit high surface area as milling speed and BPR increase. It also proved by d50 (median size) of raw (19.60μm) is greater than ground hematite ore (2.33μm). However, based on the morphology studies, particles will agglomerate at high milling speed (400rpm) and BPR (7:1). It is due to the higher impact force between feed charge and stainless steel ball during fine grinding. It also showed that raw material have coarse, large and various particles shape than ground product have fine particles and more spherical shape. In a conclusion, higher surface areas of the particles are suitable for the adsorbent application to enhance the adsorption efficiency. 2022-08 2022-11-15T01:10:21Z 2022-11-15T01:10:21Z 2017-06 Other http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76962 en Universiti Malaysia Perlis (UniMAP)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Hematite ores
Grinding
Metallurgy
Iron ore
spellingShingle Hematite ores
Grinding
Metallurgy
Iron ore
Siti Izatul Hawa, Khairol Salleh
Effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill
description Access is limited to UniMAP community.
author2 Dr. Sri Raj Rajeswari, Munusamy
author_facet Dr. Sri Raj Rajeswari, Munusamy
Siti Izatul Hawa, Khairol Salleh
format Other
author Siti Izatul Hawa, Khairol Salleh
author_sort Siti Izatul Hawa, Khairol Salleh
title Effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill
title_short Effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill
title_full Effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill
title_fullStr Effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill
title_full_unstemmed Effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill
title_sort effect of ball to powder ratio and media density on fine grinding and mechanical activation of hematite ores in planetary mill
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2022
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76962
_version_ 1751537881425379328
score 13.211869

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