You searched for: bauxite (Engelska - Maltesiska)

calcined bauxite (refractory grade)
boksajt ikkalċinat (grad refrattarju)

decolourization and purification with naturally active earth, activated earth, activated charcoal or bauxite';
it-tneħħija tal-kulur u l-purifikazzjoni permezz ta' trab attiv b'mod naturali, trab attivat,faħam tal-kannol jew bauxite attivati";

the process comprising all the following operations: processing with concentrated sulphuric acid, oleum or sulphuric anhydride; neutralisation with alkaline agents; decolorisation and purification with naturally active earth, activated earth, activated charcoal or bauxite;
il-proċess li jinkorpora dawn l-operazzjonijiet kollha: ipproċessar b’aċtu sulfuriku konċentrat, anidride oleu jew sulfurika; newtralizzazzjoni b’aġenti alkalini; tneħħija tal-kulur jew purifikazzjoni bi trab naturali attiv, trab attivat, faħam tal-kannol jew boksajt attivat;