An Improvement in the Manufacture of Cement.
Year: 1896

page_text: [Communicated from abroad. by JACOB STEIGER, care of the Firm of Georgii &
Harr, of Athens, Greece, Merchant.]
We, PETRIFITE LIMITED, of 18, Austin Friars, in the City of London, do hereby
declare the nature of this invention to be as follows:-
This invention relates to the manufacture of a cement in a dry pulverulent
form which can be used in admixture with water and any suitable materials for
manufacture of artificial stone, artificial fuel blocks and many other articles, the
cement serving to give coherence to the materials.
For this purpose, we boil magnesium chloride with a little water continually
agitating, and continue this for 8 to 10 hours until the mass becomes of pasty
consistence. After cooling we grind the mass which is solid to a fine powder
we also prepare in form of fine powder magnesia such as that obtained by calcining
magnesite, and we pulverise a lead salt such as lead acetate. We thoroughly mix
the powdered magnesium chloride prepared as above described, the powdered
magnesia and the powdered lead salt, the mixture constituting a cement in form
of a dry powder which can be used with water to cement any suitable materials
together.
Dated this 19th day of December 1896.
ABEL & IMRAY,
Agents for the Applicant.
ICATION,
An Improvement in the Manufacture of Cement.
We, PETRIFITE LIMITED, of 18, Austin Friars, in the City of London, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:-
This invention relates to the manufacture of a cement in a dry pulverulent
form which can be used in admixture with water and any suitable materials for
manufacture of artificial stone, artificial fuel blocks and many other articles, the
cement serving to give coherence to the materials.
For this purpose we boil magnesium chloride with a little water continually
agitating and continue this for 8 to 10 hours until the mass becomes of pasty
consistence.

page_text: After cooling we grind the mass which is solid to a fine powder we also prepare
in form of fine powder magnesia such as that obtained by calcining magnesite,
and we pulverise a lead salt such as lead acetate we thoroughly mix the powdered
magnesium chloride prepared as above described the powdered magnesia and the
powdered lead salt, the mixture constituting a cement in form of a dry powder
which can be used with water to cement any suitable materials together.
The proportions of the substances employed in manufacturing the cement as
above described may be varied, we find a good proportion to be as follows:-
Magnesium chloride prepared as described above 35 per cent.
Magnesia prepared as described above 60 per cent.
Lead Acetate prepared as described above 5 per cent. by weight.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we
claim is:
·
1. The herein described process for manufacturing cement consisting of
specially prepared magnesium chloride, magnesia and a salt of lead, treated as
described.
2. The cement manufactured as above set forth.