Chromite sand

Fire-resistant sand for foundry use as a highly fireproof sharpener for moulds and cores. Originally from South Africa (SAMANCOR). The sand is produced by crushing chrome ore and its washing in spiral concentrators, subsequent drying, dust cleaning, screening and sorting as per grain size.

Chemical composition

Cr2O3              min. 45%
SiO2                 max. 1.0%
CaO                 max. 0.3%

Another parameters

Cr/Fe                                   approx. 1.6
pH                                         7.1-9.5
filling density                      = 2.6 g/cm³
sintering point                    > 1,800°C
melting temperature          = 2,180°C

Most common applied grain size

0.29-0.34 mm (AFS 45-55)

Any volume can be supplied from min. 1.5 t. As to the orders up to 6 t, we handle them usually out of warehouse in Trinec and Kladno within 2-3 days from the order. Full-truck shipments are delivered from a Rotterdam directly to the customers (a necessary lead time for these orders is several days).

Packed in big bags with a capacity of 1.5 t.