PDF

Low‑Energy Feasibility for Leaching an Indigenous Scheelite Ore for Industrial Applications

Alafara A. Baba, John O. Kayode

2020enscheeliteleachinghydrochloric acidlow activation energytungsten

Abstract

Language:

In recent times, the increasing demand for pure tungsten and its compounds in defense, medicine, high technology, and emerging innovations due to its excellent properties such as its tensile strength, corrosion resistance, and high modulus of elasticity cannot be overemphasized. In this study, an acid leaching route was adopted for the extraction of pure tungsten from a Nigerian scheelite ore consisting primarily of scheelite (Ca4.00W4.00O16.00: 96-900-9627) and quartz (Si6.00O6.00: 96-900-5019). At optimal leaching conditions (2.5 mol/L HCl, 70 °C, < 75 µm), 88.5% of the initial 10 g/L ore reacted within 120 min. The low apparent activation energy (Ea) estimated as 22.94 kJ/mol with the reaction order of 0.96 affirmed the dissolution reaction to occur through the diffusion control mechanism of the first-order relation. The low Ea obtained further supports the feasibility and eco-friendly dissolution process as ⁓11.5% of the undissolved materials analyzed to contain silica (SiO2: 96-900-5302) could be used as raw materials for some defined industrial applications.

Download

Cite This Work

@article{d1f1562e-4e20-4da4-a3bf-34c93de1e199,
  title={Low‑Energy Feasibility for Leaching an Indigenous Scheelite Ore for Industrial Applications},
  author={Alafara A. Baba and John O. Kayode},
  year={2020},
  language={en}
}
TY  - JOUR
TI  - Low‑Energy Feasibility for Leaching an Indigenous Scheelite Ore for Industrial Applications
AU  - Alafara A. Baba
AU  - John O. Kayode
PY  - 2020
LA  - en
ER  -

Similar Items

842063941 SX configuration

2026enPDF

Recovery of precious metals from e waste

Printed circuit boards (PCBs) from electronic gadgets at the end of their useful life period are currently being dumped in landfills or incinerated, c

2026enPDF

Treatment of manufacturing scrap TV boar

The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f

2026enPDF

Direct leach approaches to Platinum Group Metal (PGM) ores and concentrates: A review

C.N. Mpinga, J.J. Eksteen

Platinum Group Metals (PGMs), often with associated gold, have very few occurrences where they are present in an ore deposit at economically extractab

2015enPDF

Metal Casting Processes

Unknown, Unknown

This chapter discusses metal casting processes, highlighting the diversity and common characteristics among them. The objective is to elucidate the fu

2023enPDF

Artificial intelligence-aided materials design: AI-algorithms and case studies on alloys and metallurgical processes

Rajesh Jha, Bimal Kumar Jha

This book describes the application of artificial intelligence (AI) and machine learning (ML) concepts to develop predictive models that can be used t

2022enPDF