摘要:

AbstractThe differential thermal method, by determining the thermal reactions undergone by a clay or shale, is a rapid means of identifying the mineral components of such materials, and because the properties of clays and shales depend largely on their mineral composition, it is at the same time a rapid method of evaluating the properties of such materials.Differential thermal analyses are presented for the pure forms and synthetic mixtures of the common components of clays and shales, namely, kaolinite, halloysite, illite, montmorillonite, quartz, gibbsite, boehmite, diaspore, dolomite, calcite, gypsum, organic material, pyrite, marcasite, goethite, and limonite.Differential thermal analyses are presented also for a variety of well‐known types of clays, and on the basis of the thermal data for the pure components, the mineral composition is indicated. The correlation of mineral composition of clays and shales (as reflected in the differential thermal curves) with the ceramic properties is discussed as a basis for using this thermal method to indicate the properties of such materials.Finally, differential thermal analyses are presented for sequences of samples from the pits of several operating clay products plants in order to illustrate the way in which the method can be applied in prospecting and in plant contro

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1944.tb14871.x

出版商:Blackwell Publishing Ltd    

年代:1944

数据来源: WILEY

摘要:

AbstractUsing a pure monodisperse system of kaolinite particles of known diameter and thickness, it has been possible to calculate with a fair degree of precision the thickness of the water film separating the particles and the variation in thickness of this film for different pressures. It has also been possible to calculate with considerable certainty the force acting between two clay particles.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1944.tb14872.x

出版商:Blackwell Publishing Ltd    

年代:1944

数据来源: WILEY

摘要:

AbstractThe devitrification characteristics of the field of compositions, which includes the commercial lime crystal glasses, were investigated. Tridymite was found to crystallize from glasses containing as low as 62% of SiO2. Tridymite, devitrite, diopside, sodium disilicate, and an unidentified compound were found to be primary phases. Potassium oxide (K2O), in general, lowers the liquidus temperature when it replaces Na2O.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1944.tb14873.x

出版商:Blackwell Publishing Ltd    

年代:1944

数据来源: WILEY

摘要:

AbstractThe ring‐section technique has been studied by the Standard Testing Procedure Committee of the Glass Container Association, and a tentative Standard Method of Examining and Grading Glass Container Ring Sections is proposed. The scope, method, and frequency of sampling, method of examination, and the methods used for ware‐quality grading and glass‐quality grading are desc

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1944.tb14874.x

出版商:Blackwell Publishing Ltd    

年代:1944

数据来源: WILEY

摘要:

AbstractA study of methods for testing cleaner solutions was performed under plant conditions for a period of 18 months using three different commercial cleaners. The methods of performing the various accepted tests are described and the results are summarized. Methods for determining the amount of soap and free NaOH contained in the cleaner solution are also outlined.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1944.tb14875.x

出版商:Blackwell Publishing Ltd    

年代:1944

数据来源: WILEY