公开(公告)号：US2715548A

公开(公告)日：1955-08-16

申请号：US32788052

申请日：1952-12-24

Applicant: ALUMINUM CO OF AMERICA

Inventor： FISH WILLIAM M

IPC: B01J8/00 ,  B01J8/26 ,  B01J8/28

CPC classification number: B01J8/26 ,  B01J8/0015 ,  B01J8/28

公开(公告)号：US3868442A

公开(公告)日：1975-02-25

申请号：US28681372

申请日：1972-09-05

Applicant: ALUMINUM CO OF AMERICA

Inventor： FISH WILLIAM M

IPC: C01F7/06

CPC classification number: C01F7/062

Abstract: Separation of caustic slurry of bauxite into two fractions, a high solids fraction of which rejoins the other after the other has been conducted through one or more tubular heaters, a new or reconstituted stream containing both fractions thereafter entering one or more pressure digesters.

Abstract translation: 将铝土矿的苛性浆料分离成两个部分，其高固体分数通过一个或多个管式加热器进行再次接合，另外一个新的或重构的流体随后进入一个或多个压力消化器。

公开(公告)号：US3681013A

公开(公告)日：1972-08-01

申请号：US3681013D

申请日：1970-02-02

Applicant: ALUMINUM CO OF AMERICA

Inventor： FISH WILLIAM M

IPC: B01D11/02 ,  C01F7/06

CPC classification number: C01F7/062 ,  B01D11/028

Abstract: PRELIMINARY LOW-PRESSURE DIGESTION EXTRACTS ALUMINA FROMA COARSE FRACTION OF BAUXITE. FINES SEPARATED FROM THE COARSE FRACTION ARE ALSO PASSED ON FOR SUPER-ATMOSPHERIC DIGESTION.