SUPER FINE ASH LIBERATION AT SUB 50 MICRONS
Vortex aeroacoustic technology for super fine ash liberation of drift theory Indian coal.
ARIA’s Vortex Aeroacoustics Technology uses controlled high-velocity vortex airflow and acoustic energy to induce particle-to-particle collisions, selectively liberating ultra-fine ash from coal without conventional grinding. This non-contact process preserves coal structure while freeing mineral impurities.
Ash liberation is especially critical for Indian coal, which typically contains finely interlocked mineral matter. By releasing these ultra-fine ash particles, the Vortex process significantly improves beneficiation efficiency, enabling higher-quality coal for energy and downstream chemical applications.
SUPER FINE FLUIDIZED BED BENEFICIATION
Density-based dry separation using air fluidisation and vibration to stratify superfine coal into distinct mineral layers without water.
In the ARIA Superfine Dry Fluidised Bed Beneficiation process, superfine liberated coal powder enters a vibrating rectangular tank where compressed air from the bottom fluidises the material. The combined effect of air fluidisation and vibration causes density stratification, forming layers of carbon, alumina, silica, and heavy mineral impurities.
As the material moves along an inclined discharge ramp, adjustable skimming plates selectively collect each layer into separate product streams for downstream processing.
WASTE TO VALUE FROM COAL REJECTS
Beneficiation rejects with alumina, silica and iron are converted to usable minerals.
The ARIA dry beneficiation process separates valuable mineral fractions from superfine coal through density-based stratification. This enables the recovery of industrial minerals such as silica, alumina, and iron compounds with typical purities of 85–90%.
These recovered minerals can be supplied directly to raw material buyers or further upgraded through heat treatment and refining to achieve higher purity for use in cement, metallurgy, ceramics, glass, and chemical industries.
TARGETING THE RIGHT VALUE STREAM
Indian high ash coal has much more value in rejects than the carbon streams itself.
Indian high-ash coal contains significant silica and alumina within its rejects, often exceeding the value of the carbon itself. While coal is a low-margin fuel, these minerals have higher industrial value. ARIA focuses on recovering and monetising rejects, converting waste into revenue.
This approach shifts coal beneficiation from a commodity-driven model to a high-value materials recovery business aligned with circular economy principles.
EXTRACT MINERALS, MULTIPLY COAL PROFITS
What is often discarded as waste actually contains aluminium and silicon, minerals capable of generating far greater revenue than the carbon stream.
India’s energy sector, particularly coal, has lagged due to limited returns for investors and businesses, restricting large-scale growth. Conventional models focus only on fuel value, leaving significant mineral potential untapped. The ARIA process fundamentally changes this by unlocking high-value minerals from coal rejects, transforming waste into revenue.
This shift enhances profitability, improves return on investment, and makes the coal sector more attractive, scalable, and financially viable for long-term growth.
