Assessment of magnetite polishing by using tigris river stream sediments in Baghdad : an ore microscopy application

العناوين الأخرى

تقييم صقل المغنتايت باستخدام رواسب مجرى نهر دجلة في بغداد : تطبيق في مجهرية الخامات

المؤلفون المشاركون

Khalid, Sarah Ali
Awad, Salih Muhammad

المصدر

Iraqi Journal of Science

العدد

المجلد 60، العدد 2 (30 إبريل/نيسان 2019)، ص ص. 330-340، 11ص.

الناشر

جامعة بغداد كلية العلوم

تاريخ النشر

2019-04-30

دولة النشر

العراق

عدد الصفحات

11

التخصصات الرئيسية

علوم الأرض و المياه و البيئة

الموضوعات

الملخص EN

This aim of this study is to assess the Tigris River sediments and utilize them as a new abrasive for the preparation of polished surface of magnetite ore to be studied under reflected light ore microscope.

Such polishing process was tested using 250, 125, 71, 45, 25 and 18μm grain sizes of the river sediments.

For the completion of the polishing and to obtain a glossy perfect polished surface, the 7 and 2.5 μm sized standard diamond pastes were used.

After each polishing stage, the reflectance and roughness of these surfaces were measured as an evaluation step for the polishing efficiency.

The reflectance values (R%) of the magnetite surface were found to be reversely proportioned to the abrasive grain size; while the surface roughness values (Ra) showed positive relationship with the grain size.

The polished surface showed gradual improvement with decreasing grain size of the abrasive.

The reflectance increased at a rate of 0, 0, 0.3, 1.2, 2.5, 3.7, 9.3, 20% with reducing grain sizes from 250, 125, 70, 45, 25, 18, 7 and 2.5 µm; at the same time, the roughness reduced at a rate of 72.2, 51.8, 23.7, 17.2, 10.9, 7.5, 6, 3.8 with reducing grain size.

The 18 µm abrasive grain size of river sediments was found to be the best.

Buffing by 2.5 µm diamond paste as the last stage, improved the polishing efficiency and resulted in 20% reflectance.

Based on the obtained results, the Tigris sediments can be considered as fine-grained granules with the ability of preparing a flat, homogeneous surface with little roughness and reasonable degree of reflectivity

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Awad, Salih Muhammad& Khalid, Sarah Ali. 2019. Assessment of magnetite polishing by using tigris river stream sediments in Baghdad : an ore microscopy application. Iraqi Journal of Science،Vol. 60, no. 2, pp.330-340.
https://search.emarefa.net/detail/BIM-880915

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Awad, Salih Muhammad& Khalid, Sarah Ali. Assessment of magnetite polishing by using tigris river stream sediments in Baghdad : an ore microscopy application. Iraqi Journal of Science Vol. 60, no. 2 (2019), pp.330-340.
https://search.emarefa.net/detail/BIM-880915

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Awad, Salih Muhammad& Khalid, Sarah Ali. Assessment of magnetite polishing by using tigris river stream sediments in Baghdad : an ore microscopy application. Iraqi Journal of Science. 2019. Vol. 60, no. 2, pp.330-340.
https://search.emarefa.net/detail/BIM-880915

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references : p. 340

رقم السجل

BIM-880915