With more than 30 years of experience, we are able to help you with the selection and the procurement of first class raw materials (crude or calcinated).

In addition to the standard classifications, we may offer you customized recomposed classification classes based on your specific size of grains distribution curves.

We have developed a real know-how for the evaluation, the selection and the control of our suppliers at all the steps of their production processes.

If necessary, we may also provide you with independent certificates of analysis from independent laboratories.

We classify them in 6 categories:

Raw Mineral products: clays, kaolins, diatomite, pyrophylite, vermiculite, perlite, talc, chlorites, silica, quartz,...
Processed Mineral Products: chamottes, bauxites, andalusite, cordierite, mullite , cenospheres, silicon carbide, fused alumina, fused silica, zircon
Pure or reactive alumina, micro silica and fume silica.
Products for liquid steel refinement.
Expanded clay / shale.
Calcium Alumina Clinkers & cements.

Due to the large amount of references available, it is not possible to present a product in particular.

From the study of your requests and of the quantities involved, we will be able to give you customized prescriptions and very competitive quotations.


The product is 100% environmentally friendly. It is processed through the calcination of special clays at high temperature allowing its expansion and its porosity.

Chemical analysis


Available sizes: 0-1mm,1-3mm,3-5mm,5-10mm,10-20mm,20-30mm, other sizes upon request.

Working temperature: up to 1050℃

Expanded shale: This light weight material has a high porosity and a low thermal conductivity. The surface of the lumps is hard like ceramic. This layer gives the product its properties of high strength and of low water absorption.

It is mainly used in castables, in agriculture, in water filtration and in the buildings for insulation.