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BIGPOWDERMIN
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Processing technology

We grind and micronize selected minerals and control their particle size distribution from batch to batch.

Grinding and micronization

Grinding reduces the selected mineral to a powder. Micronization takes it further, to a fine and controlled particle size range.

A filler’s particle size and the width of its distribution affect dispersion, surface appearance, gloss and binder or polymer demand. We control both.

Particle size distribution

A mineral filler contains a range of particle sizes. Technical data sheets describe this distribution with three values, D10, D50 and D90.

D10
10% of the particle volume is smaller than this size. It describes the fine end of the distribution.
D50
The median. Half of the particle volume is smaller than this size and half is larger.
D90
90% of the particle volume is smaller than this size. It describes the coarse end and often governs surface appearance.

We adjust both the median (D50) and the spread from D10 to D90 to suit the application.

Particle size distributionIllustrative frequency curve (bell-shaped) and cumulative curve (S-shaped) on a logarithmic particle size axis. D10, D50 and D90 are the sizes at which the cumulative curve reaches 10%, 50% and 90%.FrequencyCumulative volume0%10%50%90%100%D10D50D90Particle size (logarithmic scale)

Mineral blending

Some applications need a combination of minerals or grades. Blending lets us adjust a compound’s properties to a specific requirement.

Combining minerals
Pairing minerals with complementary properties in the formulation.
Combining grades
Mixing particle size grades to adjust the overall distribution.
Customer-specific compounds
Blends developed for a customer’s formulation and specification.

Production and quality control

Each production stage is tied to the product specification, and material is tested against it.

  1. Specification

    Each product has target values for its main properties.

  2. Process settings

    Production parameters are set to reach those targets.

  3. Sampling and testing

    Material is sampled and analyzed during and after production.

  4. Comparison with specification

    Results are checked against the target values.

  5. Release or adjustment

    Conforming material is released. If results deviate, the process is adjusted.

Our quality control and R&D laboratories

Let's Develop the Right Mineral Solution for Your Application.

Send us your formulation targets. Our technical team will help you select a filler and adjust it in the formulation.

Contact Our ExpertsRequest Technical Information