公开(公告)号：DE2546180A1

公开(公告)日：1977-04-28

申请号：DE2546180

申请日：1975-10-15

Applicant: HOECHST AG

Inventor： CUNTZE ULRICH DR ,  EDELMANN GERHARD DR ,  METZA LEOPOLD

IPC: B03D1/01 ,  B03D1/02

Abstract: Method is effected using flotation. Collectors are 1-amidoethyl-imidazolines having formula (I): (where R1 and R2 are 8-22 (pref. 12-18)C alk(en)yl gps.). A standard flotation process is used. (I) is added to flotation slurry contg. the ground, crude ore. Foaming- and auxiliary agents may be added. (I) are used esp. for collecting pyrochlore, columbite, pandaite, betaphite, etc. (I) do not collect quartz, calcite and other contaminating minerals. Concn. achieved with (I) is higher than that achieved by using 1-hydroxyalkyl-2-or 1-aminoalkyl-2-alkyl imidazolines as collectors.

公开(公告)号：DE1131614B

公开(公告)日：1962-06-20

申请号：DEF0030404

申请日：1960-01-28

Applicant: HOECHST AG

Inventor： ERBERICH DR GUENTHER JOSEF ,  METZA LEOPOLD

IPC: B03D1/001