摘要:

ABSTRACTThe paper gives a short review of the soda‐recovery methods used in the Kraft process. The tests made to determine the relative merits of different refractories were (1) P.C.E. determinations of soda‐refractory mixtures, (2) simulative‐service slag tests, and (3) petrographic analyses. Tests indicate that resistance is produced by (1) an impervious crystalline structure, such as soapstone for the low temperatures and electro‐cast mullite for the high temperatures, or (2) chemical inertness in contact with soda, such as is found with purer forms of m

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13937.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTResults arc presented showing the variable effect of platinum on the determination of iron in feldspar. Most of the platinum is introduced during the pyrosulphate fusion. The use of vitreous silica crucibles for the fusion reduces the platinum contamination so that the results are well within the required limits of accuracy.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13938.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

Experimental and microscopic evidence is given to show that rebolling of a ground coat results from a fracture when refiring the ground‐coat enamel. Air fills the cracks and connected bubbles. The cracks are sealed over and there is an expansion of the bubbles downward toward the base metal into the oxide layer. No evidence has been found which indicates that reboiling is caused by evolution of gas from the meta

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13939.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13940.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13941.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTA description of and data obtained with a pendulum type impact machine developed especially For use on intricately shaped electric range parts are given. The machine has been designed in such a manner that it reduces the personal factor of operation to a minimum. The effect of enamel and steel thickness upon impact is presented.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13942.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY

摘要:

ABSTRACTA method has been developed by which the flow characteristics of vitreous enamel glasses may be conveniently studied. The apparatus and method are described. Typical results are illustrated both by photographs and by a chart based on planimeter measurements of area of flow.

ISSN:0002-7820    

DOI:10.1111/j.1151-2916.1932.tb13943.x

出版商:Blackwell Publishing Ltd    

年代:1932

数据来源: WILEY