Patented Innovations in Sustainable Engineering

Developing proprietary technologies that convert environmental challenges into scalable industrial solutions.

Innovation is at the core of VEXL’s Research & Development philosophy. Our patented technologies address critical industrial waste challenges by transforming hazardous and high-moisture waste streams into reusable and commercially valuable materials. These patents are granted by the Government of India under the Patents Act, 1970 and represent significant advancements in sustainable waste management and circular economy practices.

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PATENT 01

A Cost-Effective and Efficient Method to Dry Industrial Waste Material

🔹 Patent Details
  • Patent No.: 503462
  • Application No.: 202021031819
  • Date of Filing: 24 July 2020
  • Date of Grant: 25 January 2024

Innovation Summary

This patent introduces an innovative drying technology designed for high-moisture industrial waste such as sludge, slurry, fly ash, and gypsum. Unlike conventional thermal drying systems, this method delivers:
  • Higher energy efficiency
  • Lower operational costs
  • Faster drying performance
  • Modular and scalable design (2 TPH to 20+ TPH)
Patent 1
Municipal Wastewater Granular Sludge Dryer

Industrial Impact

This solution aligns with zero-waste and circular economy objectives while reducing landfill burden and greenhouse emissions.

The technology enables effective moisture reduction, making waste:

  • Easier to transport
  • Safer to handle
  • Suitable for reuse in cement, bricks, and construction materials

It supports large-scale industrial applications including:

  • Power plants
  • Mining
  • Metal processing
  • Waste treatment facilities
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PATENT 02

Effective Utilization of Jarosite Waste

🔹 Patent Details
  • Patent No.: 435968
  • Application No.: 201921017290
  • Date of Filing: 01 May 2019
  • Date of Grant: 28 June 2023

Innovation Summary

VEXL developed a proprietary valorization process that converts jarosite, a hazardous by-product from zinc hydrometallurgical operations, into:
The process achieves over 98.5% metal recovery, improving efficiency beyond conventional methods.
  • Industrial-grade Fe₂O₃ (Iron Oxide)
  • Zinc compounds
  • Fertilizer-grade ammonium sulphate
  • Significant silver recovery
Patent

Environmental & Economic Impact

  • Eliminates large-scale jarosite landfill disposal
  • Reduces groundwater contamination risk
  • Creates new revenue streams from recovered materials
  • Supports circular economy practices
Pilot-scale implementation is progressing toward industrial deployment.