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Sil Shakti
Magnetic separator removing iron bearing material from the feed

Technology & R&D

Engineering
better silica

Our processing strategy is focused on improving purity, recovery, consistency and processing efficiency across increasingly demanding silica applications.

From mine to market

A controlled process from source to solution

Our integrated processing approach lets us progressively improve the quality and characteristics of the mineral, one controlled step at a time.

  1. 01
    Sandstone blocks and haul roads at the Sil Shakti quarry

    Raw Material

    Silica bearing sandstone from our mineral resource.

  2. 02
    Crusher jaws breaking sandstone into smaller pieces

    Crushing

    Controlled size reduction.

  3. 03
    Washing and attrition scrubbing of silica sand

    Washing & Scrubbing

    Removal of surface contaminants.

  4. 04
    Magnetic separator removing iron bearing material from the feed

    Magnetic Separation

    Reduction of iron bearing impurities.

  5. 05
    Screening silica granules to size

    Classification

    Controlled particle size distribution.

  6. 06
    Purification plant with process towers and pipework

    Advanced Purification

    Higher purity processing for demanding applications.

  7. 07
    Technician weighing samples in a quality laboratory

    Testing

    Chemical and physical quality verification.

  8. 08
    Palletised material being loaded for dispatch

    Packaging & Dispatch

    Industrial bulk supply.

Processing capabilities

What each step does

  • 01

    Beneficiation

    Separation of unwanted mineral fractions.

    Washing and attrition scrubbing remove clay and surface coatings from the grains before further processing.

  • 02

    Magnetic Separation

    Reduction of iron bearing impurities.

    High intensity magnetic separation targets iron bearing minerals, the main limit for glass and solar grades.

  • 03

    Advanced Purification

    Development of higher purity silica.

    Routes such as acid leaching and optical sorting are part of our development roadmap toward higher purity material.

  • 04

    Process Optimization

    Improving recovery, consistency and efficiency.

    Work on recovering fine silica fractions and tightening size control so more of the resource becomes saleable product.

Moving up the value chain

  1. STAGE 01

    Rock

    Silica bearing sandstone

  2. STAGE 02

    Crushed Mineral

    Controlled size reduction

  3. STAGE 03

    Processed Silica

    Washed, separated, classified

  4. STAGE 04

    High Purity Silica

    Advanced purification

  5. STAGE 05

    Glass / Foundry / Solar

    Application grades

  6. STAGE 06

    Future Silicon

    Under development

Higher purity routes and silicon grade material are under development. We publish performance figures only once they have been verified.

Working on a demanding specification?

Tell us the chemistry and size limits you need to meet. We will discuss what our processing route can achieve.

Request a Quote