MINERAL LAYERED SILICATE IN THE FORM OF A NANOPOWDER

摘要

The invention relates to the manufacture of a mineral product consisting of aluminium layered silicate and corresponding fines containing at least 70% of the mineral illite of the chosen type. According to the invention, the starting material in its natural composition is pre-crushed and the agglomerated layered silicate particles are deagglomerated at a high rate of acceleration and swirled using vigorous masses of air. The agglomerates are broken up into primary crystallites by colliding them with each other and against impact surfaces, and the deagglomerated layered silicate particles are removed by fine screening. The deagglomerated particles are then fed back into the circuit and the deagglomerated primary crystals are removed.