PROCESS AND APPARATUS FOR THE CALCINATION OF MINERAL MATERIALS IN POWDER, IN PARTICULAR IN CEMENT PRODUCTS

摘要

THE INVENTION CONCERNS THE CALCINATION OF POWDERED MINERAL MATERIALS WITH THE USE OF A SOLID FUEL. /P P TO ALLOW THE USE OF VARIOUS SOLID FUELS, INCLUDING LOW FUELS WITH A HIGH ASH CONTENT, WITH A HIGH ASH CONTENT. RELATIVELY COARSE GRANULOMETRY, WITHOUT COSTLY PREPARATION, THE FUEL IS CARBONIZED (IN 50) IN A FLUIDIZED BED AT HIGH TEMPERATURE TO PRODUCE AN UPFLOW OF COMBUSTIBLE GAS AND THE SOLID MATERIALS TO BE CALCINATED ARE DISPERSED THROUGH 52 CURRENTS (52) THEREIN. INJECTING Y THROUGH A CURRENT OF AIR OR ANY OTHER OXIDIZING GAS.