ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18476.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18477.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18479.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18480.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

摘要:

ABSTRACTThe results of laboratory studies of the drying and water‐smoking behavior of twelve clays, typical of those used in the manufacture of clay structural units, are given and correlated with data obtained at plants during the firing of ware made from these same clays. There is evidently considerable difference in the time required to dry the materials investigated and it is indicated that the fire clays as a group are considerably more difficult to dry than are shales and surface clays. The results also indicate that the removal of hygroscopic and chemically combined water, as initially contained in the clay, are not important factors in regard to the time required to watersmoke and fire clay ware under plant conditions. With proper equipment it would appear to be possible to fire clay ware, approximating brick and paving block in size and shape, to 1832°F in 20 hours, but that the following conditions in practice may necessitate a longer firing time than that shown to be satisfactory in the laboratory: (1) the heating of ware which is not “bone dry” and which necessitates completion of the drying operation in the kiln; (2) the time required to complete oxidation; (3) the limitations necessitated by the kiln construction, the brick work of which may be destroyed by too rapid heating and cooling; (4) limitations of kiln design because of which enormous differences in temperature would develop throughout the setting by too rapid heating; and (5) insufficient movement of furnace gases to promptly remove all water

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18481.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

摘要:

ABSTRACTA summary ot information secured in answer to a questionnaire dealing with some of the features of glass tank operation. Considerable variation in methods is shown by the replies given by twenty‐seven manufacturer

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18482.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

摘要:

ABSTRACTThe purpose of this work was to study vitreous enamel slips in order to develop adequate means for measuring and controlling their consistency under plant conditions.A suitable laboratory means for determining their consistency was first selected, and the effect of various factors upon consistency determined by this means. In order to learn something of the mechanism by which changes in consistency take place, observations were made upon the physicochemical nature of the different phases of several typical slips; also, the state of flocculation of the finer particles of suspended matter was observed under different conditions known to produce slips of different consistencies.A simplified method of determining consistency, suitable for plant use, was then devised, and the work carried into the field. This simplified means was put into use in conjunction with other tests, in order to obtain data for correlating consistency as determined by this method with the working properties of the slips.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18483.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

摘要:

ABSTRACTThis is a Fourth Progress Report outlining results and data which are supplementary to results published in the Third Report. This Report contains values of modulus of elasticity, transverse breaking strength, and maximum fiber elongation of seventeen representative sagger clays as determined by tests at 1000°C and includes (for comparative purposes) the values of these same properties previously determined at several lower temperatures. At 1000°C the rigidity of the clays has greatly decreased and the cross‐breaking strength has greatly increased when compared with values obtained at room temperatures. The pyrometric cone equivalent (P. C. E.) value of the clays appears to give the best indication of the relative plastic deflection exhibited at 100

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18484.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18485.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY

摘要:

ABSTRACTThe chief causes of failure of refractories in boiler furnaces are slag adhesion, erosion, and failure of structure, dependent on the type of coals and feeds used. Some of the physical and chemical properties of different types of refractories are given. The development of bonded silicon carbide brick is mentioned. Clinker trouble is eliminated by use of these brick in furnaces using all kinds of present day stoker equipment. Failures due to chemical reaction between iron and silicon carbide, and torch action on a wall produced by a blast of flame under pressure together with medium amounts of iron in the ash are discussed. Air cooling of walls is taken up. Installations of air‐cooled silicon‐carbide blocks are listed and discussed. Water cooling, the use of preheated air, and conditions of use of the water wall are taken

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1927.tb18486.x

出版商:Blackwell Publishing Ltd    

年代:1927

数据来源: WILEY