FR725965A
(en )
1932-05-20
Improvements to methods and devices for precipitating hydrated alumina and separating it from alkali aluminate solutions
FR740621A
(en )
1933-01-27
Process for preparing sodium aluminate solutions
FR805782A
(en )
1936-11-28
Process for precipitating alumina from lime aluminate solutions
FR799092A
(en )
1936-06-05
Process for preparing aqueous solutions of caustic alkalis
FR829785A
(en )
1938-07-06
Process for obtaining precipitates from solutions of lime aluminates
FR800551A
(en )
1936-07-08
Process for cooking lime aluminates containing ferruginous impurities
FR781044A
(en )
1935-05-08
Improvements to processes for treating lime aluminates
FR764440A
(en )
1934-05-22
Process for the crystallization of nitrates from alkaline earths and especially nitrates of lime and magnesia
FR810636A
(en )
1937-03-24
Process for water purification
FR805325A
(en )
1936-11-17
Process for preparing alumina sulfate
FR798999A
(en )
1936-05-29
Alumina extraction process
FR906265A
(en )
1945-12-28
Process for precipitating alumina hydrate from alkali aluminate solutions
FR790658A
(en )
1935-11-25
Process for the production of a pure alumina hydrate
FR897599A
(en )
1945-03-26
Process for removing silicic acid from aluminate solutions
FR832801A
(en )
1938-10-04
Process for preparing pure alumina with simultaneous obtaining of pure lime
FR791182A
(en )
1935-12-05
Process for water improvement
FR759012A
(en )
1934-01-27
Improvements to the processes for obtaining alumina
FR789104A
(en )
1935-10-23
Water clarification process and installation for the implementation of this process
FR789323A
(en )
1935-10-26
Improvements to lime aluminate treatment processes
FR1041612A
(en )
1953-10-26
New primers for the precipitation of alumina from alkali aluminate solutions
FR796296A
(en )
1936-04-03
Process for treating alumina obtained by precipitation of aqueous solutions of lime aluminates and new products resulting therefrom
FR738665A
(en )
1932-12-28
Process for obtaining practically pure alumina
FR814808A
(en )
1937-06-30
Process for the removal of salts from industrial water
FR47251E
(en )
1937-03-05
Process for preparing alumina poor in silicic acid from alkaline earth aluminates
FR892632A
(en )
1944-05-15
Process for separating phosphorus and vanadium salts from aluminate solution during the production of alumina by the bayer process