AN IMPROVED PROCESS FOR REMOVING PHOSPHATES FROM ORES AND FOR UTILIZING THESE PHOSPHATES
Year: 1869

page_text: LETTERS PATENT to Julius Jacobi, of Kladno, Bohemia, for the
Invention of "AN IMPROVED PROCESS FOR REMOVING PHOSPHATES FROM
ORES AND FOR UTILIZING THESE PHOSPHATES."
Sealed the 18th March 1870, and dated the 21st September 1869.
PROVISIONAL SPECIFICATION left by the said Julius Jacobi at the
Office of the Commissioners of Patents, with his Petition, on the
21st September 1869.
I, JULIUS JACOBI, of Kladno, Bohemia, do hereby declare the nature
of the said Invention for "AN IMPROVED PROCESS FOR REMOVING PHOSPHATES
FROM ORES AND FOR UTILIZING THESE PHOSPHATES," to be as follows:-
This Invention consists in treating ores containing phosphates by
sulphurous acid, or any other compound of sulphur and oxygen, and
subsequently washing the ores thoroughly with water. If the ores
contain sulphides or carbonates they ought to be calcined; if they are
very dense they must be broken up or ground to convenient size. The
sulphurous acid which is used by preference may be employed dissolved
in water, or passed into the ore in the gaseous state by means of a pump,
fan, steam jet, chimney, or other mechanical contrivance. The washing
ith water is continued until the desired purity is obtained. Out of this

page_text: washing a precipitate of the phosphates is obtained by heating the water
or adding slaked lime to the same, or both.
is driven off at such process may be re-used.
valuable manure.
The sulphurous acid which
The precipitates form a
SPECIFICATION in pursuance of the conditions of the Letters Patent,
liled by the said Julius Jacobi in the Great Seal Patent Office on
the 21st March 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JULIUS
JACOBI, of Kladno, Bohemia, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of September, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Julius Jacobi, Her special licence that J,
the said Julius Jacobi, my executors, administrators, and assigns, or such
others as 1, the said Julius Jacobi, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "AN IMPROVED PROCESS FOR REMOVING PHOSPHATES
FROM ORES AND FOR UTILIZING THESE РНОБРНАТЕВ," upon the condition
(amongst others) that 1, the said Julius Jacobi, my executors or admi-
nistrators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal l'atent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said Julius Jacobi, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement:-
This Invention consists in treating ores containing phosphates by
sulphurous waid

page_text: water. 1 may in some cases use other compounds of sulphuric and
oxygen instead of sulphurous acid. If the ores contain sulphides or
carbonates they ought to be calcined; if they are very dense they must
be broken up or ground to a convenient size. The sulphurous acid
which is used by preference may be employed dissolved in water, or
passed into the ore in a gaseous state by means of a pump, fan, steam
jet, chimney, or other mechanical contrivance. The washing with water
is continued until the desired purity is obtained. Out of this washing a
precipitate of the phosphates is obtained by heating the water or adding
slacked lime to the same; or in some cases 1 both add the lime and heat
the water.
In treating the fluid a large quantity of the sulphurous acid (SO)
will escape; a large portion of the phosphate is at the same time pre-
cipitated, but the sulphurous acid can be recovered. When a certain
quantity of phosphorous salts are retained in the solution it may be
necessary to precipitate the phosphates by lime, but generally this
treatment will not be necessary, and it will be better if all of the
phosphates are precipitated by heating the solution, leaving only the
sulphurous salts. If it is found that all the phosphates cannot be
precipitated by heat 1 can then apply the lime.
Having now clearly described my said Invention, and shewn how the
same may be conveniently and advantageously carried into practice,
I claim,
First. Treating iron or other metallic ores containing phosphates with
sulphurous acid or other suitable compound of oxygen and sulphur for
the purposes set forth.
Second. The production of phosphate of lime for manure by the
process herein set forth.
In witness whereof, 1, the said Julius Jacobi, have hereunto set
my hand and seal, this Sixteenth day of March, in the year of
our Lord One thousand eight hundred and seventy.