Improvements relating to the Preparation or Treatment of Bones. and Mineral Phosphates for Fertilizing Purposes.
Year: 1895

page_text: Date of Application, 28th Oct., 1895
Complete Specification Left, 28th July, 1896-Accepted, 29th Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements relating to the Preparation or Treatment of Bones.
and Mineral Phosphates for Fertilizing Purposes.
I, RICHARD SILCOCK, of Thornton Hall, Poulton-le-Fylde, in the County of
Lancaster, Seed Crusher and Manure Manufacturer, do hereby declare the nature.
of this invention to be as follows:-
:-
This invention of improvements relating to the preparation or treatment of
bones and mineral phosphates for fertilizing purposes has reference to an improved.
means for removing or driving off the moisture from the semi-liquid mixture which.
results after the phosphates have been subjected to the action of sulphuric or other
acid.
The main feature of my invention consists in raising the temperature of the
semi-liquid mass whilst in the mixing pot to such a degree that when the mixture.
is discharged from the pot into the den below its temperature is so great as to
cause the excessive moisture to be driven off or evaporated.
In carrying my invention into effect I cause to be blown into the mixing pot and
through the pasty material contained therein hot air super-heated steam or flue-
gases from a steam boiler or other furnace. The hot air steam or gases may be
either pumped or otherwise blown or forced through the material.
By the above described method I am enabled to dry the material sufficiently and
at the same time to produce it in a friable condition suitable for manurial or plant.
food purposes.
Improvements relating to the Preparation or Treatment of Bones.
and Mineral Phosphates for Fertilizing Purposes.
I, RICHARD SILCOCK, of Thornton Hall; Poulton-le-Fylde, in the County of
Lancaster, Seed Crusher and Manure Manufacturer, do hereby declare the nature.
of this 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 of improvements relating to the preparation or treatment of
bones and mineral phosphates for fertilizing purposes has reference to an improved
means for removing or driving off the moisture from the semi-liquid mixture which
results after the phosphates have been subjected to the action of sulphuric or other
acid.
The main feature of my invention consists in raising the temperature of the
semi-liquid mass whilst in the mixing pot to such a degree that when the mixture
is discharged from the pot into the den below its temperature is so great as to
cause the excessive moisture to be driven off or evaporated.

page_text: In carrying my invention into effect I cause to be blown into the mixing pot and
through the pasty material contained therein hot air super-heated steam or flue
gases from a steam boiler or other furnace. The hot air steam or gases may be
either pumped or otherwise blown or forced through the material.
By the above described method I am enabled to dry the material sufficiently
and at the same time to produce it in a friable condition suitable for manurial or
plant food purposes.
The sulphuric acid having been mixed in the usual way with the phosphates,
:superphosphates, or such materials as bone manure, blood and bones, hoofs, horns,
woollen shoddy, and the like I cause super-heated steam to be blown into an
injector arranged or fixed directly opposite the boiler flue the injector drawing the
heated gases, from the said flue and forcing them into the lower part of the mixture
whose temperature thereby becomes raised to about 600 degrees Fahr. This is
continued one or two minutes when the steam is shut off and superheated air 'under
pressure turned on which increases the temperature of the mixture to from 800
to 1000 degrees Fahr., this additional rise of temperature driving off practically
all the moisture and leaving the materials acted upon in the form of a nicely
powdered manure ready for bagging and which owing to the absence of moisture
prevents the acid from rotting the bags.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
}
In the preparation or treatment of bones and mineral phosphates for fertilizing
purposes by the sulphuric acid process causing hot air or gases at a high
temperature to be blown through the material under treatment so as to discharge
.or evaporate the moisture therefrom substantially as herein described.
Dated this 28th dor of In 1996
Dated this 28th dor of Iul 1006
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.