Method for producing artificial stones from slate ashes and lime

Claim 1

THE PREPARATION OF POROUS ARTIFICIAL STONE, SUCH AS THE SO-CALLED GAS CONCRETE, WHICH COMPRISES DISSOLVING A RELATIVELY VERY SMALL QYANTITY OF A SUGAR IN A SUFFICIENT QUANITITY OF WATER TO PRODUCE SUCH STONE FROM THE INGREDIENTS TO BE ADDED, AND AGITATING TOGETHER IN THAT WATER SLATE ASHES AND AN ACTIVE LIME, BOTH IN FINELY DIVIDED STATE, AND A STILL SMALLER QUANTITY, THAN THE SUGAR, OF AN AGENT THAT REACTS WITH THE MIXTURE TO LIBERATE AN EXPFANSION GAS FOR THE RESULTING MASS, AND SO TIMING THE INCLUSION OF THE ACTIVE LIME AND THE SUGAR IN THE REACTION MIXTURE THAT BOTH UNSLAKED LIME AND SUGAR ARE PRESENT SIMULTANEOUSLY IN THE MIXTURE ABOUT WHEN THE EXPANSION GAS BEGINS TO FORM GAS BUBLES IN THE REACTION MASS AND ALSO WHILE THE GAS BUBBLES ARE STILL FORMING IN IT AND ITS POROSITY IS BEING DEVELOPED.