From raw material to shipment, control is ours
Every product goes through a defined production and quality-control process. Our aim is material that is consistent batch to batch and conforms to specification.
Production in five steps
Washing
The raw material is washed; clay, dust and organic impurities are removed.
Classification
Separation by grain size with a hydrosizer; a narrow, consistent gradation.
Grinding
A controlled grinding line for granular and micronised products.
Quality control
Every batch undergoes sieve and chemical analysis; conformance to specification is verified.
Packaging & shipping
Bulk, big-bag or sack; planned, fast delivery.
Every batch is analysed
Grain-size analysis
Grain distribution and AFS fineness are measured by sieve analysis.
Chemical composition
SiO₂ and impurity levels (Fe₂O₃, Al₂O₃) are checked.
Moisture & purity
Moisture and visual purity are verified before every shipment.
Batch report
A real batch analysis report is provided with the shipment.
Analyses performed in our own laboratory
Every batch goes through the following analyses in our own laboratory. Results are provided as a real batch report with the shipment.
Silica (SiO₂) determination
The silicon dioxide content of the sample is determined; the primary indicator of purity.
XRF analysis
Elemental and oxide composition (SiO₂, Fe₂O₃, Al₂O₃, etc.) is measured precisely by X-ray fluorescence.
Mean grain-size determination
The average of the grain distribution is determined; essential for selecting the right gradation.
Uniformity coefficient (UC)
The homogeneity of the grain-size distribution; decisive especially in filtration beds.
Moisture content
The free moisture percentage in the sample is measured.
Clay content
Fine clay and impurity content is determined; affects foundry and filtration performance.
AFS determination
The grain-fineness number (AFS) for foundry sand is calculated.
Acid mass loss
Carbonate and impurity loss is measured by acid solubility; important for filter-media quality.
Sieve analysis
The grain-size distribution (retained %) is obtained using standard sieves.
The instruments we run the analyses on
We measure every batch with the instruments in our own laboratory and share the results as a batch report.
Let’s determine the product that fits your specification together.
Tell us what you need; we will get back to you within 24 hours on product, grain size and shipping.