INTERNATIONAL JOURNAL OF LATEST TECHNOLOGY IN ENGINEERING,
MANAGEMENT & APPLIED SCIENCE (IJLTEMAS)
ISSN 2278-2540 | DOI: 10.51583/IJLTEMAS | Volume XIV, Issue XI, November 2025
Environmental and Social Challenges
While lithium mining offers significant economic opportunities, it also poses environmental and social risks.
The mining and processing of lithium can lead to habitat destruction, pollution, and the depletion of water
resources, especially in areas where brines are extracted for lithium. Moreover, the issue of child labor in some
African and South American mining operations is a major concern. The presence of informal mining activities
in regions like Nasarawa has led to violations of human rights, making it critical for governments and companies
to establish fair and ethical labor practices and environmentally responsible mining techniques (Isa et al., 2025).
Lithium Ores Processing in Nigeria
The lithium extraction process begins with mining, where ore deposits are identified and extracted using
conventional methods. The choice of mining technique depends on various factors, including the depth, size,
and economic viability of the deposits. After extraction, the ore undergoes crushing and grinding, a mechanical
process that breaks the ore into smaller particles. This process, known as comminution, reduces the ore's size
and helps efficiently release and separate lithium from other minerals. The aim is to achieve a fine enough
particle size to optimize the recovery process (Isa et al., 2025).
Once the ore is crushed and ground, froth flotation is used to separate and concentrate lithium minerals, such as
spodumene and lepidolite, from other minerals in the pegmatitic deposits. Froth flotation is a mineral processing
method that exploits differences in the surface properties of minerals, enabling the selective separation of lithium
minerals based on their ability to adhere to air bubbles, which are then floated to the surface. Studies of lithium
ore deposits in Europe have shown that froth flotation can produce Li2O concentrates, although challenges such
as fine quartz and albite inclusions can reduce the process's effectiveness (Isa et al., 2025). Depending on the
ore's specific characteristics, flotation can be performed through either direct or reverse flotation.
Following flotation, the concentrate undergoes roasting, a thermal process that converts lithium minerals into
water-soluble compounds, making them ready for the next stage—leaching. Roasting is a vital step in lithium
extraction, as it enhances the accessibility of lithium for further extraction. For instance, Philippe Yolka’s study
on lithium recovery from spent lithium-ion batteries (LIBs) demonstrated that sulfuric acid roasting at 750 °C
efficiently converts lithium oxide into lithium sulfate, which can then be dissolved in water for further processing
(Isa et al., 2025). Another method, explored by Dong et al. (2024), involves calcium sulfate roasting of overhaul
slag, which also transforms lithium into a soluble form, aiding subsequent extraction and refining.
These essential processing steps—from mining to roasting—are critical to lithium recovery and refining in
Nigeria. With extensive lithium reserves, primarily in Kogi, Nasarawa, Ekiti, Kwara, Cross River, Oyo, and
Plateau States, Nigeria has the potential to play a significant role in the global lithium supply, especially as the
demand for lithium-ion batteries and other sustainable energy technologies continues to rise (Isa et al., 2025).
Nigeria Government Contributions towards Safe and Sustainable Lithium Mining and processing
The global demand for lithium has surged with the transition to clean energy, which is vital for driving renewable
energy sources and advancing battery technology. Ensuring a steady supply of lithium is key to making this
energy transition sustainable, and this requires efficient lithium ore mining and the use of environmentally
friendly extraction methods. The government plays a crucial role in addressing illegal mining, enforcing mining
regulations, and protecting resources, miners, the mining community, and the environment. However, illegal
mining activities in Nigeria remain a complex issue due to poor documentation, limited data on these activities,
and a lack of detailed location information. While licensed miners are organized into formal groups, formalizing
the activities of illegal miners has been challenging due to economic hardship, corruption, and terrorism.
Tackling these developmental issues in lithium extraction will enhance the confidence of licensed mining
companies, attract potential investors, and ensure a sustainable supply of lithium and other rare earth minerals
crucial for the energy transition.
Nigeria has intensified its efforts to combat illegal lithium mining. Recent operations have led to the arrest of
foreign nationals and local illegal miners, highlighting the involvement of foreign entities in these activities.
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