Burnt materials

Production of chamotte and kaolin:

  • is made in a rotary kiln at a temperature of about 1,350 °C
  • the main advantage of the rotary kiln is the homogenous burning of the batch of raw materials
  • this provides the specific properties such as
  • low loss on ignition
  • high bulk density
  • low water absorption

These parameters, together with high refractoriness, allow our products to be used in a wide range of industries such as the production of: 

  • refractory bricks, blocks and tiles
  • castables
  • foundry moulds
  • ceramics mixtures
  • materials for the production of sanitary ceramics
  • sanitary ceramics or electro porcelain
  • finely ground for glazes

To improve the quality is the burnt clay magnetically separated.

Through the subsequent sorting and grinding we may deliver Chamotte and Kaolin in many size distributions:

  • coarse (0-60 mm)
  • fine (0-1 / 1-3 / 3-6 mm)
  • precise sorting with assured oversized and undersized content as well as guaranteed internal composition (0,1-0,5 / 0,25-0,63 / AFS)
  • finely milled (10 - 100 microns)

To protect the products from iron contamination the mill is lined with a high alumina lining and we use grinding balls made from high alumina material.

Granulation

Granulometry - typical fraction (mm)

Coarse

5-18; 15-30; 0-10; 0-20; 0-30; 0-50; 0-60

Fine

0-1; 1-3; 3-6; and combinations of these fractions

Precise

0,1-0,5; 0,25-0,63; 0,5-1; 0,3-0,8; 0,5-1,5; AFS

  - mixture AFS 50

0,5–2,66%; 0,355–33,23%; 0,25–37,58%;
0,18–8,24%; 0,125–8,02%; 0,09–0,1%;
0,063–0,07%; 0-0,063–0,1%

  - mixture AFS 65

0,3555–5%; 0,25–29,7%; 0,15–37%;
0,125–24%;0,09–3,5%; 0,063–0,5%;
0,063–0,3%

Finely milled

0-0,1; 0-0,09; 0-0,075; 0-0,063; 0-0,05; 0-0,045; 0-0,02