AT66476B
(en )
1914-08-25
Loading device for ore roasting furnaces with vertical agitator shaft.
CH64974A
(en )
1914-05-16
Loading device on ore roasting furnaces
AT74037B
(en )
1917-11-26
Agitator for mechanical roasting ovens and the like.
NL157C
(en )
1914-03-16
Retort furnace with loading shaft
FR450126A
(en )
1913-03-15
Loading device for blast furnaces with inclined lift
CH78232A
(en )
1918-07-01
Emptying device for shaft furnaces
CH69799A
(en )
1915-08-02
Agitator for roasting ovens
AT87391B
(en )
1922-02-25
Drive for movable grates for emptying shaft furnaces, silos or the like.
CH64522A
(en )
1914-04-01
Roasting furnace, especially for ores
AT52357B
(en )
1912-02-26
Mixing arm for roasting ovens.
FR469990A
(en )
1914-08-17
Shaft for roasting ovens
AU1234414B
(en )
1914-06-09
Improvements in feeding devices for roasting furnaces
FR451163A
(en )
1913-04-12
Oven for roasting ores
FR453808A
(en )
1913-06-17
Oven for roasting ores
FR449186A
(en )
1913-02-19
Oven for roasting ores
ES55103A1
(en )
1913-05-16
Improvements in metallurgical furnaces.
DK18887C
(en )
1914-06-08
Filling apparatus for ore grating furnaces.
CH69509A
(en )
1915-07-01
Mixing arm device for roasting ovens
AU859913B
(en )
1913-04-13
Improvements in roasting furnaces
AU857813B
(en )
1913-10-21
Feeding devices for roasting furnaces
CH69025A
(en )
1915-05-17
Feeding device for roasting ovens
AU1011313B
(en )
1914-02-03
Improvements in furnaces for roasting, smelting or otherwise treating ores
AU1983210B
(en )
1911-01-17
Improvements in ore roasting furnaces
CA153094A
(en )
1914-01-20
Ore roasting furnace mechanism
AU155711B
(en )
1911-08-29
Improved hearth for cooling ores or other materials proceeding from calcining or roasting furnaces