DK46843C
(en )
1933-01-30
Process for the production of sulfur and oxides of iron from sulphide-containing iron ores.
SU27194A1
(en )
1932-07-31
The method of processing of sulfur ores
DK45366C
(en )
1932-03-07
Method for the production of dispersible and storage-resistant nitrophosphates.
GR2026B
(en )
1928-10-23
METHOD OF ENRICHMENT OF SULFER ORE.
GR1479B
(en )
1927-04-13
SPECIAL IRON SULFUR METAL MELTING OVEN.
DK46841C
(en )
1933-01-30
Circuit process for treatment of sulphide-containing material with Iron as the main metal.
DK40077C
(en )
1929-04-29
Apparatus for limestone and machines for the manufacture of such.
DK44526C
(en )
1931-08-24
Procedure for the production of ammonium sulphate and sulfur.
DK40504C
(en )
1929-07-22
Shaft furnace for the handling of metal and metal ores.
ES110637A1
(en )
1929-02-01
A furnace for desulphurization of iron ores.
FR644537A
(en )
1928-10-09
Advanced blast furnace
FR607749A
(en )
1926-07-07
Sulfur ores roasting process
DK41303C
(en )
1929-12-16
Procedure for the production of dense and blister-free castings of so-called white metal.
DK43847C
(en )
1931-03-16
Procedure for roasting sulfur ores or sulfur-containing materials.
CH138363A
(en )
1930-02-28
Process for roasting sulfur ores and other sulfur-containing materials.
DK44954C
(en )
1931-12-07
Gas and Furnace Production Procedure.
FR628817A
(en )
1927-10-29
Ore reduction process
ES94436A1
(en )
1925-11-01
A procedure for smelting and treating molten metals.
DK42576C
(en )
1930-07-14
Refining dome furnace.
DK42577C
(en )
1930-07-14
Refining dome furnace.
ES108410A1
(en )
1928-09-01
Furnace for the desulfurization of iron minerals, pyrites.
DK46288C
(en )
1932-10-10
Method and Apparatus for the production of V-belts.
ES107771A1
(en )
1928-07-16
Improvements in the production of iron oxide and sulfur.
DK35569C
(en )
1926-02-01
Apparatus for the manufacture of metal wire binders.
DK38477C
(en )
1928-02-27
Procedure for processing zinc-containing ores and mining products.