Technical and Economic Features in the Utilization of Blast Furnace Slag in Glass Manufacture
Description
Includes bibliographical references (p. 45).Abstract
The object of this investigation was to find a more advantageous
method for the disposal of blast furnace slag.
As a result of this investigation, a method was developed for the
production of four types of glass: (1) A transparent aluminum
glass, (2) an opaque black glass, (3) a translucent "opal" glass,
and (4) a laboratory or "chemical" glass.
The optimum conditions for carrying out the various processes
were determined.
The various objections to the use of slag for glass manufacture
were discussed in detail and an explanation offered as to how these
objections were overcome.
The transparent aluminum glass and the black opaque glass were
made on a semi-commercial scale.
Drawings and specifications together with an estimate of the
cost of the necessary equipment for commercial or large scale manufacture
of the slag glasses are included. This data was supplied by
the Simplex Engineering Company, and the Amsler-Norton
Company.
The cost of the raw materials for producing the various slag
glasses was determined and the results compared to various commercial
glasses.
The physical and chemical properties of the various glasses were
determined and the results compared with commercial glasses.
Various economic features were discussed with the point in view
of determining the commercial feasibility of the process.
The results showed that there was a saving in the cost of the
raw materials from 35 to 75 per cent and the glasses were of superior
quality with respect to thermal endurance, chemical stability,
tensile strength and resistance to breakage by impact. An
additional advantage in the case of the black glass was the high gloss and true black color. An advantage possessed by all the slag
glasses was their resistance to shattering when broken.