IMPROVEMENTS IN PREPARING FIRE-PROOF MATERIAL FOR CONVERTERS AND FURNACE-LININGS, APPLICABLE ALSO TO OTHER PURPOSES
Year: 1879

page_text: LETTERS PATENT to Friedrich Carl Glaser, of No. 92, Linden Strasse, Berlin, in
the Kingdom of Prussia and Empire of Germany, Engineer and Patent Agent,
for the Invention of "IMPROVEMENTS IN PREPARING FIRE-PROOF MATERIAL
FOR CONVERTERS AND FURNACE-LININGS, APPLICABLE ALSO TO OTHER PURPOSES."
A communication from the Vereinigte Koenigs & Laurahuette (United
Kings and Laura Iron Works), of Koenigshuette Ober-Schlesien, Prussia,
Germany
Sealed the 14th May 1880, and dated the 25th November 1879.
PROVISIONAL SPECIFICATION left by the said Friedrich Carl Glaser at the
Office of the Commissioners of Patents on the 25th November 1879.
FRIEDRICH CARL GLASER, of No. 92, Linden Strasse, Berlin, in the Kingdom of
Prussia and Empire of Germany, Engineer and Patent Agent. "IMPROVEMENTS IN
PREPARING FIRE-PROOF MATERIAL. FOR CONVERTERS AND FURNACE-LININGS,
APPLICABLE ALSO TO OTHER PURPOSES." A communication from the Vereinigte
Koenigs & Laurahuette (United Kings and Laura Iron Works), of Koenigshuette
Ober Schlesien, Prussia, Germany.
This Invention relates to improvements in the production of fire-proof material
for basic converter and furnace lining.
For the production of such a material, either magnesian or limestone may be taken
which does not contain more than 10 per cent. of silicic acid, argillaceous earth,
iron oxyde, or other admixtures which cause the same to be easily inelted.
The crude limestone is ground and moistened with from 5 to 10 per cent. of
animal blood and well mixed together. Out of the damp (not plastic) composition,
bricks, twyers, shaped stone, and articles of a similar kind are pressed under a
moderately high pressure.
The composition may also be employed for lining the pouring pans of converters,.
furnace hearths, and also as mortar or cement. The pressed objects are immediately
after removal from the mould sufficiently firm to allow of their being stacked for
the purpose of drying.
The bricks thus produced will, by mere drying, become as hard and firm as stone,
perfectly able to withstand the effects of the atmosphere, and not be damaged by
rain and damp, and may be excellently worked with the mason's hammer.
The material described is employed for unburnt objects.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Friedrich Carl Glaser in the Great Seal Patent Office on the
21st May 1880.
FRIEDRICH CARL GLASER, of No. 92, Linden Strasse, Berlin, in the Kingdom of
Prussia and Empire of Germany, Engineer and Patent Agent. "IMPROVEMENTS IN
PREPARING FIRE PROOF MATERIAL FOR CONVERTERS AND FURNACE-LININGS,
APPLICABLE ALSO TO OTHER PURPOSES." A communication from the Vereinigte
Koenigs & Laurahuette (United Kings and Laura Iron Works), of Koenigshuette
Ober-Schlesien, Prussia, Germany.
In order to produce basic stones from dolomite, silicate of magnesia Mg O CO,,
or from lime artificially mixed with silicate of magnesia, I employ the following
process:-
The respective materials are pulverized and from 5 to 10 per cent. of pulverized
sulphate of magnesia Mg O, SO,, or sulphate of soda Na O SO₂, and from 5 to 10 per
cent. of pulverized chromate of iron added to them.
The ingredients are thoroughly mixed up together with animal blood alone, or
with animal blood and a solution of green vitriol, in such manner that the
composition is not plastic, but loose or light, and from this composition bricks,
twyers, and other objects are pressed and dried at a moderate heat.
The pressed objects are immediately upon their removal from the mould so firm
that they may be suitably slacked for the purpose of drying.
The said objects after drying are perfectly hard and firm like stone, proof against
atmospheric effects, are not injured by rain and damp, and may be excellently well
worked with the mason's hammer.
The material described may be employed either in a burnt or unburnt state.
Having now described and ascertained the nature of the Invention communicated
to me as aforesaid, and in what manner the same is or may be performed, what
I claim as secured to me by the hereinbefore in part recited Letters Patent is,―
The use of animal blood, green vitriol, sulphate of magnesia Mg O SO,, or sulphate
of soda Na O, SO,, and chromate of iron in the production of fire-proof basic
material for converters and furnace-linings, substantially as hereinbefore described.
In witness whereof, I, the said Friedrich Carl Claser, have hereunto set my
hand and seal, this Eighteenth day of May, in the year of our Lord One
thousand eight hundred and eighty.
C AND