CATL Lithium Mine EIA Restart: Rising Demand for Nitrogen Generators and Air Compressors

The restart of the CATL lithium mica mine EIA (Environmental Impact Assessment) has attracted widespread attention in the capital market, with most investors focusing on future lithium carbonate price fluctuations. However, for industrial gas suppliers and gas equipment manufacturers, the core opportunity lies in the massive industrial gas and air system demand brought by the new lithium mica refining production line.

Located in Jiangxi, the large-scale lithium mica mine project has officially resumed environmental assessment approval, marking a key step toward formal construction and production. After the mine is put into operation, a large amount of lithium mica ore will go through crushing, flotation, roasting, leaching, purification, and lithium precipitation processes. Throughout the entire lithium extraction workflow, industrial compressed air, oxygen, and high-purity nitrogen are no longer auxiliary materials but essential process media that determine production stability and mineral recovery efficiency.

Industrial Gas Applications in Lithium Mica Extraction Process

1. Compressed Air: Core Power Source for Mineral Processing

Compressed air runs through the entire pre-treatment and flotation workshop. It is widely used for ore crushing, ball milling, flotation tank aeration, pneumatic valve control, powder conveying, and dust removal back-blowing.

Lithium mica flotation requires oil-free and dry compressed air. Impurities such as oil and moisture will directly affect the performance of flotation reagents, reduce lithium concentrate recovery rate, and cause production instability. Large-scale lithium mica processing plants require high-power, stable air compressor stations for 24-hour continuous operation.

2. Industrial Oxygen: Oxidation Assistant for Roasting Process

Sulfate roasting is the mainstream technical route for lithium mica extraction. In the rotary kiln high-temperature roasting stage, precise oxygen supplementation adjusts the internal oxidation atmosphere, promotes full dissociation of mineral crystal structures, and significantly improves lithium leaching efficiency.

Stable oxygen supply directly determines roasting conversion rate. More new lithium salt factories are adopting on-site oxygen generation systems to replace traditional liquid oxygen tank supply, reducing transportation costs and supply instability.

3. High-Purity Nitrogen: Inert Protection and Pipeline Purging

In the stages of leaching, purification, concentration, lithium precipitation, and final lithium carbonate storage, nitrogen plays a critical protective role. High-purity nitrogen is used for reactor blanketing, intermediate storage tank inerting, and process pipeline purging to isolate air oxidation and prevent material deterioration.

In addition, nitrogen provides explosion-proof protection for lithium powder silos, suppressing dust explosion risks. For 30,000–40,000-ton annual lithium carbonate production lines, nitrogen consumption remains high and stable throughout the year.

Gas Consumption Scale of Full-Scale Lithium Mine Production

Based on operational data from existing large-scale lithium mica refining projects in Jiangxi, the gas consumption of a standard 30,000–40,000-ton battery-grade lithium carbonate production line is clear and quantifiable:

With an annual mining capacity of 30 million tons of raw ore, the restarted CATL lithium mica project will generate huge and long-term stable gas demand after full production. New lithium refineries mainly adopt two gas supply modes: traditional cryogenic liquid gas tank centralized supply and on-site gas generation systems including air compressor stations, nitrogen generators, and oxygen generation units.

Business Opportunities for Industrial Gas Suppliers & Equipment Manufacturers

Existing gas suppliers in the Jiangxi lithium industry cluster mainly support small and medium-sized lithium salt factories via liquid gas tanker delivery. However, large-scale new energy lithium smelting projects have stricter requirements:

First, the instantaneous gas consumption is enormous, making tanker delivery insufficient to support peak production demand.
Second, lithium mica roasting is a continuous high-temperature process. Any gas supply interruption will cause huge economic losses and safety risks.

Therefore, on-site gas generation solutions have become the preferred choice for new large-scale lithium projects. Integrated air compressor stations, nitrogen generation systems, and oxygen generation equipment will usher in a new wave of bidding and procurement demands.