CH72403A
(en )
1916-05-16
Method and furnace for roasting ores
AT88397B
(en )
1922-05-10
Method and device for utilizing the sulfur contained in blast furnace slag.
CH57634A
(en )
1913-01-16
Method and furnace for reducing or melting ores by electrical means
CH69366A
(en )
1915-06-16
Process for smelting metals and furnace for practicing this process
CH74042A
(en )
1917-01-02
Process for the continuous leaching of ores, rocks and other goods
AU1701015B
(en )
1916-01-05
Improvements in apparatus for treating ore or other material by drying and or coling and or preheating and or partially roasting
FR496373A
(en )
1919-11-05
Sulfur ore roasting furnace
CH138363A
(en )
1930-02-28
Process for roasting sulfur ores and other sulfur-containing materials.
CH75423A
(en )
1917-07-16
Method for charging shaft furnaces for burning sintering material
FR590569A
(en )
1925-06-19
Improvements to filtering chambers to separate the dust contained in the gases leaving combustion furnaces, such as pyrite furnaces, blende furnaces and metallurgical furnaces in general
CH81801A
(en )
1919-07-16
Method and machine for bending metal wire into eyelets
FR476216A
(en )
1915-07-20
Improvements in ore reducing furnaces
FR476217A
(en )
1915-07-20
Improvements in ore reducing furnaces
CH77204A
(en )
1918-03-16
Device for dedusting ores, and fine coal and the like
AU1104313B
(en )
1914-03-03
Improvements in ore roasting or drying furnaces
AU1011313B
(en )
1914-02-03
Improvements in furnaces for roasting, smelting or otherwise treating ores
CH61745A
(en )
1913-10-16
Apparatus for hardening metals in places
AU1701015A
(en )
1916-01-05
Improvements in apparatus for treating ore or other material by drying and or coling and or preheating and or partially roasting
CH70239A
(en )
1915-09-01
Method and apparatus for breaking coconuts and the like
CH72428A
(en )
1916-06-02
Method and device for charging closed electric furnaces
CH77880A
(en )
1918-06-01
Method and apparatus for ventilating haysticks
AU1983210B
(en )
1911-01-17
Improvements in ore roasting furnaces
CH80766A
(en )
1919-08-01
Device for burning, roasting and sintering minerals
CH70793A
(en )
1916-03-16
Furnace for melting metals
FR478940A
(en )
1916-01-19
Method and device for treating materials in electric furnaces