Chemical News and Journal of Physical Science, Tom 121Chemical news office., 1921 |
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Strona 14
... clay , china - clay , and the various types of fire - clay , can be brought into the colloidal con- dition by suitable means , and most naturally occurring compounds , as emery , quartz , or steatite , and the artificial abrasives ...
... clay , china - clay , and the various types of fire - clay , can be brought into the colloidal con- dition by suitable means , and most naturally occurring compounds , as emery , quartz , or steatite , and the artificial abrasives ...
Strona 15
... clay and similar materials . The com- mercial application of these phenomena to the purification of the clay is due to the late Count Schwerin . He showed that the addition of small traces of alkali to a suspension of clay in water ...
... clay and similar materials . The com- mercial application of these phenomena to the purification of the clay is due to the late Count Schwerin . He showed that the addition of small traces of alkali to a suspension of clay in water ...
Strona 16
clay substance is higher than that of any admix- ture of common clay substance with silica , al- though it is commonly known that the other in- gredients generally present in mined clay , such as pyrites , mica , felspar , and the like ...
clay substance is higher than that of any admix- ture of common clay substance with silica , al- though it is commonly known that the other in- gredients generally present in mined clay , such as pyrites , mica , felspar , and the like ...
Strona 17
... clay . In his own case , in using an ordinary and well - known form of clay crucible or muffle for experiments , he was very lucky if he could ensure getting anything like 24 hours ' work out of it , but it was quite easy to ob- tain ...
... clay . In his own case , in using an ordinary and well - known form of clay crucible or muffle for experiments , he was very lucky if he could ensure getting anything like 24 hours ' work out of it , but it was quite easy to ob- tain ...
Strona 18
... clay muffle , made from a certain clay , lasted thirteen journeys , heated up to 1500 ° C. , as shown by the pyrometer , whereas muffles made from the same clay used by the muffle maker without treatment would never last three journeys ...
... clay muffle , made from a certain clay , lasted thirteen journeys , heated up to 1500 ° C. , as shown by the pyrometer , whereas muffles made from the same clay used by the muffle maker without treatment would never last three journeys ...
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