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High-Purity Synthetic Gypsum – Uses, Benefits & Compliance

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Supplies synthetic & chemical gypsum (50–85% purity)

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Used in cement, construction, and

industrial fillers

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CPCB-approved for end-user

applications

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Encourages reuse, reducing

landfill waste

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Supports the

circular economy

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Waste Reimagined.
From Acid to Advantage.

Producing high-purity synthetic / Chemical  gypsum that builds stronger, greener futures.

Synthetic / Chemical gypsum is an eco-friendly, high-purity form of calcium sulfate dihydrate produced from industrial by-products like spent sulfuric acid. At Pure Leela, we transform waste into value — creating gypsum that meets the strict quality needs of cement, construction, and agricultural industries, while promoting sustainability and reducing environmental impact. Here’s how we transform industrial waste into high-quality synthetic / chemical gypsum.

Process of Making Gypsum From Spent Acid

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Here’s a quick breakdown of the process :

  • Waste Limestone Feed (1–3)

    • Limestone is fed into the process as the calcium source.

  • Spent H₂SO₄ Feed (4–5)

    • Acid from industrial waste streams is introduced.

  • Neutralization Reaction Tanks (6)

    • Spent acid reacts with calcium carbonate in the limestone.

    • CO₂ is released as a by-product.

    • Hot water circulation improves reaction efficiency.

  • Settling Tank (7)

    • Separates solid gypsum from the liquid filtrate.

    • Filtrate contains nutrients (Na⁺, K⁺, Mg²⁺, Ca²⁺, SO₄²⁻) that can be used as fertilizer.

  • Solid-Liquid Separation (8)

    • Filter press or centrifuge is used to remove water from gypsum solids.

  • Drying (10)

    • Moisture in gypsum is reduced to required limits.

  • Storage & Dispatch (11)

    • Final synthetic gypsum is stored and packaged for use in cement, boards, or plaster.

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By transforming industrial waste into high-purity synthetic gypsum, we’re building stronger structures and a greener future. Partner with us to make sustainability a part of your supply chain
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