IMPROVEMENTS IN THE MODE OF EXTRACTING AND SEPARATING PRECIOUS METALS, GOLD, SILVER, PLATINUM, ALSO OTHER COMMON METALS FROM SILICIOUS ALUMINIOUS AND OTHER SUBSTANCES AND IN THE MODE OF MANUFACTURING ALUMINIUM BRONZE FROM THE ALUMINIOUS RESIDUES PRODUCED BY THE ABOVE PROCESS
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by John Peter Kagenbusch at the Office
of the Commissioners of Patents on the 28th February 1882.
JOHN PETER KAGENBUSCH of Cornwall Road Lambeth in the County of Surrey
Manufacturing Chemist Mining and Smelting Director. "IMPROVEMENTS IN THE
MODE OF EXTRACTING AND SEPARATING PRECIOUS METALS, GOLD, SILVER, PLATINUM,
ALSO OTHER COMMON METALS FROM SILICIOUS ALUMINIOUS AND OTHER SUBSTANCES
AND IN THE MODE OF MANUFACTURING ALUMINIUM BRONZE FROM THE ALUMINIOUS
RESIDUES PRODUCED BY THE ABOVE PROCESS."
"
This invention has for its object the extraction and separation of precious and
other metals in an improved and economical manner from Silicious Aluminious
and other substances and in the application of the same process for obtaining
and manufacturing Aluminium bronze from the aluminious residues produced
therefrom.
For obtaining precious and other metals from the above substances, I first
pulverize and then roast them with charcoal or other suitable carbonaceous substance
the time required for roasting would be regulated by the component parts contained
in the minerals or other substances being treated.
When the roasting of the minerals or substances is completed it is thrown, red
hot, into water, by preference cold well stirred and washed clean.
The minerals or substances are then dried and mixed with the following fluxes
for smelting Soda ash (carbonate of Soda) Potash (Carbonate of Potash) Borax
and other fluxes used for smelting minerals such as Lime Salt, Rock salt, Fluor
Spar &c, or a mixture of the same always having a certain quantity of soda ash
or potash in the mixture of the fluxes used to bring the Silica and Alumina
chemically combined with the metals into a soluble state or materials containing
the above.
When thoroughly mixed and put by for some days the mass is put in crucibles
or furnaces and white heat applied thereto it will soon be found in a melted
condition the length of time taken for smelting, the kind and quantity of the fluxes
to be used would be estimated and fixed according to the component parts the
minerals or substances to be smelted contain, By these means the greater part of
Drine 0.31

page_text: the metals in the substances are then chemically separated from the silicious
aluminious and other earthy and injurious substances.
When the smelting is finished I add zinc and copper to the melted mass and stir
it well up with a view of causing a developement of electricity which facilitates a
further and complete separation of the metals from the silica alumina and other
earthy and injurious substances.
The smelting may be carried on in crucibles or suitable furnaces, the metals are
after the smelting separated mechanically from the dross or slag by washing the
soluble matters out, then I purify in the usual manner.
If the slag or dross after the metals have been extracted contains any alumina I
add thereto a certain quantity of metallic granulated copper the quantity boing
regulated by the amount of alumina ascertained to be in tho slag or dross and
again bring it to a melted condition, and well stirred up from time to time. The
copper will then combine with the metal aluminium in the alumina after being in
a melted condition for an hour more or less stirring the mass up again several times.
I thereby produce Aluminium bronze of better quality than any at present known
as it takes up all the gold platinum and silver left in the slag or dross by the first
process.
The metal is then mechanically separated from the dross and purified in the usual
1355RAH