ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1943.tb15197.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

AbstractSamples of Georgia kaolins were investigated by thermal analysis and by X‐ray and microscopic examinations. Soft kaolins were found to have a high percentage of crystalline kaolinite, whereas hard kaolins contained substantial amounts of less crystal lized material. Variations in the degree of crystallization, grain size, nature and amount of organic matter, and admixture of different minerals are given as reasons for the differences in the clays examine

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1943.tb15198.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

AbstractThe rehydration characteristics of a group of twenty clays were studied by dehydrating at 300°C. and then rehydrating by exposure to a water‐saturated atmosphere at 30°C. for periods extending from approximately 28 to 80 days. A sharp differentiation was obtained between the montmorillonite and the kaolinite‐illite types of clays.A simple, rapid rehydration‐dehydration test and the results on ninety‐five clay samples are presented as an aid in the evaluation of clays. The test can be completed within five hours and permits a limited but useful classification

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1943.tb15199.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

AbstractA volumcnometer of improved design has been developed for measuring the solid volumes of specimens varying in size up to that of standard refractory bricks. The chief feature of the new design is the use of a closed‐cistern, altitude‐type mercurial barometer to replace the simple manometer previously used. The barometer is de signed for use in a constant temperature room (21.1°C.) where the acceleration of gravity is 980.1 cm. per sec.2. Under these conditions, pressure readings are auto matically corrected to standard conditions. A vernier permits rapid readings to 0.1 mm. of mer

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1943.tb15200.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY

摘要:

AbstractThe method of radiant gas firing without mufftes, fire tubes, or in some cases saggers is described.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1943.tb15201.x

出版商:Blackwell Publishing Ltd    

年代:1943

数据来源: WILEY