公开(公告)号：US3625427A

公开(公告)日：1971-12-07

申请号：US3625427D

申请日：1970-02-25

Applicant: LITTLE INC A

Inventor： NADKARNI RAVINDRA ,  TREMBLAY FRANK J ,  KUSIK CHARLES L

IPC: B01D1/16 ,  B01J8/24 ,  B05B9/00

CPC classification number: B01D1/16 ,  B01J8/1827

Abstract: Apparatus for feeding liquid solutions by means of a nozzle into a fluidized bed used for evaporating liquids from solids in solution. The nozzle is coupled to a feed line outside the bed and a casing is provided to catch any fluid leaking from the coupling, thus preventing any fluid from leaking into the fluidized bed thereby helping to insure controlled chemical and physical properties in the solid particles thus produced.

公开(公告)号：US3440009A

公开(公告)日：1969-04-22

申请号：US3440009D

申请日：1966-07-19

Applicant: LITTLE INC A

Inventor： FLOOD HAROLD W ,  KUSIK CHARLES L ,  TREMBLAY FRANK J

IPC: C01B7/03 ,  C01G49/06 ,  C23G1/36 ,  C01B7/08

CPC classification number: C23G1/36 ,  C01B7/03 ,  C01G49/06 ,  Y10S423/01

公开(公告)号：US3911078A

公开(公告)日：1975-10-07

申请号：US29044272

申请日：1972-09-20

Applicant: LITTLE INC A

Inventor： NADKARNI RAVINDRA M ,  KUSIK CHARLES L ,  MEISSNER HERMAN P

IPC: C01G28/00 ,  C22B1/11 ,  C01B27/00 ,  C01B29/00 ,  C01G29/00 ,  C22B31/00 ,  C22B33/00 ,  C22B37/00

CPC classification number: C22B1/11 ,  C01G28/002 ,  C01P2006/80 ,  Y02P10/234 ,  Y02P10/236

Abstract: Method for removing essentially all of the chemically bonded arsenic and antimony from copper sulfide ores. The arsenic and antimony are selectively leached out using Na2S in a basic solution. The resulting Na3AsS4 and Na3SbS4 are converted to the sulfides or to ferric arsenate and ferric antimonate for safe disposal. Sodium and sulfur values are recovered for recycling in the process.

Abstract translation: 从硫化铜矿石中去除基本上所有化学键合的砷和锑的方法。 使用Na 2 S在碱性溶液中选择性地浸出砷和锑。 将所得的Na 3 AsS 4和Na 3 SbS 4转化为硫化物，或转化成砷酸铁和锑酸铁以便安全处理。 在该过程中回收钠和硫的回收利用。