...incipient fusion and viscosity within 41.6° C. (76° F.) of each other. This rapid softening of calcareous clays is one of the main objections to their use,...fusion and viscosity by the addition of quartz and feldspar.1 Clays with much lime carbonate2 require only 20 to 24 per cent, of water to convert them...

...incipient fusion and viscosity within 41.6° C. (76° F.) of each other. This rapid softening of calcareous clays is one of the main objections to their use,...fusion and viscosity by the addition of quartz and feldspar.1 Clays with much lime carbonate2 require only 20 to 24 per cent. of water to convert them...

...incipient fusion and viscosity within 41.6°C. (76°F.) of each other. This rapid softening of calcareous clays is one of the main objections to their use,...viscosity by the addition of quartz and feldspar. Many erroneous statements are found in books, regarding the allowable limit of lime in clays, some...

...incipient fusion and viscosity within 41.6°C. (76°F.) of each other. This rapid softening of calcareous clays is one of the main objections to their use,...magnesia, the presence of several per cent, of the latter substanir. will counteract this. It has also been found possible to increaw the interval between the...

...incipient fusion and viscosity within 41.6° C. (75° F.) of each other. This rapid softening of calcareous clays is one of the main objections to their use,...fusion and viscosity by the addition of quartz and feldspar.1 One of the most extensive series of tests, are those made by R. Rieke,2 who sought to determine...

...calcareous clays which is one of the greatest objections to their use, and on this account it is not safe to attempt the manufacture of vitrified products...but, as mentioned under Magnesia, the presence of the latter to the extent of several per cent may sometimes counteract this. The presence of considerable...