HUT43879A
(en )
1987-12-28
Improved method for multi-stage recovering coal layer
GB2181452B
(en )
1989-06-07
Leaching process
ZA872399B
(en )
1988-12-28
Method for purifying tio2 ore
GB2181421B
(en )
1989-11-29
Process for the recovery of noble metals from ore-concentrates
GB2174379B
(en )
1988-12-14
Process for recovering carbon dioxide
GB8516335D0
(en )
1985-07-31
Process for solids-fluid separation
GB8506660D0
(en )
1985-04-17
Leaching & recovering vanadium
ZA861994B
(en )
1986-09-16
Process for oxidizing an ore
GB2173820B
(en )
1989-06-28
Smelting process
ZA875687B
(en )
1989-03-29
Process for recovering metals
EP0225674A3
(en )
1989-08-30
Vanadium recovery process
GB2203420B
(en )
1991-06-26
Process for the recovery of metals
GB2194941B
(en )
1990-04-04
Process for recovering vanadium values
GB2181722B
(en )
1989-08-02
Method for the recovery of precious metals from ores
AU582453B2
(en )
1989-03-23
Melt-reductive iron making method from iron ore
EP0224209A3
(en )
1988-04-27
Process for recovery of rare metals
DE3663622D1
(en )
1989-07-06
Method for gas separation
ZA863155B
(en )
1987-12-30
Gold recovery processes
GB2163738B
(en )
1988-12-21
Process for recovering or purifying selenium
ZA862944B
(en )
1987-08-26
Method for recovering vanadium from vanadium containing ore
DE3562760D1
(en )
1988-06-23
Method for extracting fumes
AU6472186A
(en )
1987-04-24
A method and apparatus for recovering copper from ores containing copper and iron sulphide
EP0219213A3
(en )
1988-06-15
Method of recovering gallium from scrap containing gallium
EP0202697A3
(en )
1988-03-09
Separation process for para-fluoro-aniline
ZA868840B
(en )
1987-07-29
Process for recovery of rare metals