HYDROTHERMALLY TREATED MATERIAL CONTAINING OLIVINE

摘要

O F T H E D I S C L O S U R E HYDROTHERMALLY TREATED MATERIAL CONTAINING OLIVINE A starting material for the manufacture of shaped and hydrothermally hardened products is composed of a binding agent comprising finely-divided olivine having a specific outer surface of at least 25 ?00 cm2./cm3, measured according to the permeability method, and finely-divided silica material in a quantity which is at most equal to the solid volume of said olivine and a ballast material in an amount of 50 - 80 % by volume of the starting material and comprising particulate ultra-basic rock or slag material having a particle size of 80 % smaller than 200 -1000 .mu.m.