公开(公告)号：US3647373A

公开(公告)日：1972-03-07

申请号：US3647373D

申请日：1968-10-16

Applicant: LITTLE INC A

Inventor： HUSKA PAUL A ,  MEISSNER HERMAN P ,  LAMB THOMAS J

IPC: C01F7/30 ,  C01F7/02 ,  C01B21/42 ,  C01F7/08

CPC classification number: C01F7/308

Abstract: Method and apparatus for converting an aluminum nitrate solution to Alpha -alumina for electrolytic reduction to aluminum. The solution is introduced into a fluidized bed under conditions which remove a substantial portion of the nitrate values as nitric acid vapor and form a solid product which is heated further to remove residual water and nitrate values and to convert the alumina to Alpha -alumina.

Abstract translation: 将硝酸铝溶液转换成α-氧化铝用于电解还原成铝的方法和装置。 将溶液引入流化床中，其条件是除去大部分硝酸盐值作为硝酸蒸气并形成固体产物，进一步加热以除去残留的水和硝酸盐值并将氧化铝转化为α-氧化铝。

公开(公告)号：US3586476A

公开(公告)日：1971-06-22

申请号：US3586476D

申请日：1968-10-16

Applicant: LITTLE INC A

Inventor： BEUTNER HEINZ P ,  HUSKA PAUL A

IPC: C01G49/00 ,  C22B3/38 ,  C01F7/66

CPC classification number: C01G49/0009 ,  C22B3/0068 ,  C22B3/0087 ,  Y02P10/234

Abstract: AN IMPROVED METHOD OF STRIPPING FERRIC IONS FROM AN ORGANIC ION-EXCHANGE LIQUID WITH AN ACID CHARACTERIZED BY THE STEPS OF WASHING THE ION-EXCHANGE LIQUID WITH WATER PRIOR TO AND SUBSEQUENT TO THE STRIPPING TO PREVENT THE TRANSPORT OF UNWANTED ANIONS BETWEEN THE AQUEOUS LIQUID STREAMS.