Guimarães and Morita 2003 quoted that it is possible to mix up to 90% of aluminous sludge with only I0% of clay, as long as sludge is completely dewatered. With 40% humidity, it would be possible to add 45% of sludge; and with 75% humidity it would only be possible to add I0% of sludge.
Guimarães y Morita 2003 citan que es posible mezclar hasta 90% de lodo aluminoso con apenas 10% de arcilla, siempre que el lodo esté totalmente seco; con 40% de humedad, se podría incorporar el 45% de lodo y con 75%, solamente se podría incorporar 10%.