IMPROVEMENTS IN SMELTING AND REFINING FURNACES
Year: 1883

page_text: LETTERS PATENT to Nestor Frèro, Civil engineer, of Molenbeck Saint Jean,
near Bruxelles, Belgium for an Invention of IMPROVEMENTS IN SMELTING
AND REFINING FURNACES
PROVISIONAL SPECIFICATION left by the said Nestor Frère at the Office
of the Commissioners of Patents on the 27th July 1883.
NESTOR FRÈRE, Civilengineer, of Molenbock Saint Jean, near Bruxelles, Belgium,
" IMPROVEMENTS IN SMELTING AND REFINING FURNACES
"
My invention relates to furnaces for smelting and purifying ores or metals.
My invention consists chiefly in adding to the furnace proper a purifying or
refining tank which receives the molten metal from the furnace proper for the
purpose of separating the metal from its slags, the heat for keeping the refining
tank at the required temperature being obtained by a part of the flame or hot
gasos from the main furnace, but if desired a special fire place may be built for
the purifier.
The purifier is preferably cylindrical, placed at the side of the furnace proper
and a little lower than the same, so that the molten metal may easily run from the
main furnace into the purifier, but the latter may in some cases bo placed in the
main furnace.
The top of the purifier may be provided with suitable mechanism or tools for
facilitating the purification of the metals.
The main or reverberatory furnace is also provided with a blast from a fan or
blower. The reverberatory furnace may communicate by a flue with the chimney,
and by one or two other flues with one or two purifiers, so that the gases of
combustion may pass either direct into the chimney, or first into the purifiers and
then into the chimney, and in some cases a portion of the gases may be allowed to
escape through the vault of the reverberatory furnace direct into the atmosphere.
The walls or sides of the purifier are provided with suitable openings for
allowing the molten metal to run off when desired.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent and
of an Order of the Lord Chancellor filed by the said Nestor Frère in the
Patent Office on the 2nd February 1884.
NESTOR FRÈRE, Civil Engineer, of Molembeck St Jean nr Brussels, Belgium
"IMPROVEMENTS IN SMELTING AND REFINING FURNACES"
My Invention relates to Furnaces for Smelting or Purifying Ores or Metals
and consists chiefly in adding to the Furnace proper, as at present in use, a
purifying or refining Tank which receives the Molten Metal from the Furnace
proper for the purpose of separating the Metal from its Slags, the heat for keeping
the refining Tank or Purifier at the required temperature being obtained by a part
of the flame or hot gases from the main furnace, but, if desired, a special fire place
may be built for the Purifier or several fire places may be constructed in different
positions
The Purifier is preferably cylindrical placed at the side of the furnace proper
and a little lower than the same so that the Molten Metal may easily run or be
conducted from the main furnace into the Purifier but the latter may in some
cases be placed in the main furnace or in other positions.
The top of the Purifier may be provided with suitable mechanism or tools for
facilitating the purification of the Metals
The main or reverberatory furnace is also provided with a blast from a fan
or blower. The reverberatory furnace may communicate by a flue with the
chimney and by one or two other flues with one or two purifiers so that the gases
of Combustion may pass either direct into the chimney or first into the Purifier
and then into the chimney and in some cases a portion of the gases may be
allowed to escape through the vault of the reverberatory furnace direct into the
atmosphere.
The walls or sides of the Purifier are provided with suitable openings for
allowing the Molten Metal to run off when desired.
My invention has the following advantages:—(1) Extraction of the purified
metals at one fusion, a result which has hitherto not been obtained (2) Rapid
working and economy in labour. (3) Economy in combustion over all other
systems proportionally to work done
To sum up I claim the entire and exclusive right of the Invention above detailed
and illustrated by which it is permitted me to erect furnaces for the fusion of all
metals or minerals, whatever they may be, by preventing the Slags mixing with
Metals. I Claim The employment of a purifier. as and for the purposes herein set
forth and illustrated.
In Witness whereof I, the said Nestor Frère, have hereunto set my hand and
seal this twenty sixth day of January in the year of our Lord 1884.
NESTOR FRÈRE (LS)