CH37144A
(en )
1907-04-30
Furnace with rotating combustion chamber for roasting sulphurous ores
FR382158A
(en )
1908-01-31
Furnace with heating chamber for combustion air
GB190616364A
(en )
1907-07-18
Improvements relating to the Treatment of Refractory Zinc-lead Ores.
AT25605B
(en )
1906-09-10
Device to facilitate the dismantling of the valves of explosion engines.
FR379939A
(en )
1907-11-22
Improvements in the treatment of refractory zinc-lead ores
FR367368A
(en )
1906-10-27
Furnace for the extraction of zinc from its ores
FR382457A
(en )
1908-02-07
Combined electrometallurgical furnace
FR362680A
(en )
1906-07-04
electrolyser for the treatment of metalliferous ores, etc.
CH44123A
(en )
1909-07-01
Furnace for the combustion of sulphide ores
CH42207A
(en )
1909-01-16
Chamber furnace for gasifying coal, roasting ores, etc.
CH37710A
(en )
1907-07-31
Device for feeding steam into the combustion chamber of furnaces
CA106496A
(en )
1907-07-23
Ore furnace
GB190525672A
(en )
1906-10-11
Improvements relating to the Extraction of Metals from their Ores.
CA99757A
(en )
1906-06-26
Ore roasting furnace
GB190601770A
(en )
1907-01-23
Improvements in Reverberatory Furnaces
CH38700A
(en )
1907-11-30
Shaft furnace with gas firing
AU594206B
(en )
1906-10-09
Improvements in ore roasting furnaces
FR399479A
(en )
1909-06-29
Mechanical furnace for the roasting of pyrites, its distributor and its dust chamber
AU560706A
(en )
1907-04-09
An improved ore roasting furnace
FR358977A
(en )
1906-03-13
Mechanical roasting or desulfurization furnace
FR355581A
(en )
1905-11-07
Rotating oven for roasting fine pyrite and shot
AU5925B1
(en )
1907-01-15
An improved ore grinding pan
CA102904A
(en )
1907-01-08
Furnace grate
FR381143A
(en )
1907-12-28
Ore roasting process
FR496373A
(en )
1919-11-05
Sulfur ore roasting furnace