Year: 1897

page_text: Date of Application (in United Kingdom); 22nd January, 1897
Complete Specification Left, 7th Sept., 1897-Accepted, 16th Oct., 18
We, LA SOCIÉTÉ MÉTALLURGIQUE DE CHAMPIGNEULLES ET NEUVES-MAISONS, of
Pont Saint-Vincent, (Meurthe et Moselle), in the Republic of France, do hereby
declare the nature of this invention to be as follows:-
In actual practice slag cement is manufactured by grinding cold, before and after
mixture, or after mixture only, dry or moist granulated slag from the blast-furnace
and either slaked or quick lime.
Our invention consists in a new process of treating a suitable mixture of lime and

page_text: This mixture is employed with the addition of the quantity of water necessary to
forin it into a consistent mortar, when the granulated slag is not very porous and
does not contain sufficient water.
It is then rendered as homogeneous as possible by causing it to pass into a mortar-
making apparatus (drum or mil!).
On leaving the pug-mill or other apparatus, the mortar is run into plates on a paved
floor or surface, where it is left to itself for two or three days, and in any case during
a time sufficient to enable it to acquire sufficient hardness to permit of its, being
crushed without causing it to be reduced to pieces of too small size.
The pieces obtained are baked in shaft-furnaces, reverberatory furnaces, ovens or
other apparatus.
The temperature to which the mixture is subjected should vary from a dark red to a
bright red heat, according to the rapidity of setting which it is desired to impart to
the cement to be made.
The calcined material is finely crushed or ground by the aid of mills or preferably
ball-mills or crushers with large or small balls giving a material of uniform fineness,
which does not require to be bolted.
In this manner, according to the temperature of baking, cements are obtained the
setting of which can be instantaneous, and which can have the ordinary hardness of the
Wassy cements with an incomparably superior resistance.
To manufacture cements which set-less rapidly, it is necessary to crush or grind
finely, by means of mills or ball-mills or crushers with large or small balls, a mixture
composed :-
1. Of calcined material such as is above mentioned;
2. Of granulated slag from the blast-furnace having the composition indicated
above, this slag being previously dried at a low temperature.
3. Of slaked fat or hydraulic lime.
Quicklime can be employed in place of the slaked lime, provided that moist
granulated slag be added instead of dry granulated slag.
In the mixture, the proportion between the lime and the granulated slag should
be that already indicated for preparing the material to be calcined. By varying the
temperature of baking the calcined material and the proportions of the elements of
the inixture, a cement can be obtained having the desired time of setting.
Dated the Dond dow of Tannoy 1907
The Manufacture of an Improved Cement.
We, LA SOCIÉTÉ MÉTALLURGIQUE DE CHAMPIGNEULLES ET NEUVES-MAISONS, of
Pont Saint-Vincent (Meurthe et Moselle), in the Republic of France, do hereby
declare the nature of this invention and in what inanner the same is to be
performed to be particularly described and ascertained in and by the following
statement —
:
In actual practice slag cement is manufactured by grinding cold, before and after
mixture, or after mixture only, dry or moist granulated slag from the blast-furnace
and either slaked or quick lime.
:
Our invention consists in a new process of treating a suitable mixture of lime and
slag from the blast furnace.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
anufacture of a cement which sets extra-rapidly and is of high
resistance, obtained by the mixture with slaked lime of moist granulated slag of
Suitable composition, and by the grinding or crushing of this mixture after baking it
at a suitable temperature, substantially as herein before described.
Second. By way of utilizing the properties of rapid setting of the calcined material
above indicated, the manufacture of cements of high resistance, obtained by
finely grinding or crushing a mixture of the said material with lime and granulated
slag in proportions varying according to the time which it is desired that the cement
shall take to set, substantially as hereinbefore described.
FORL
September
D. YOUNG & Co.,
11 and 12 Southampton Buildings, London, W.C.,
Agents for the Applicants.
שיזי ווי ז
-en בדרום
D. YOUNG & Co.,
11 and 12 Southampton Buildings, London, W.C.,
Agents for the Applicants.