公开(公告)号：US3642439A

公开(公告)日：1972-02-15

申请号：US3642439D

申请日：1969-10-15

Applicant: ALLIED CHEM

Inventor： MOORE WILLIAM P ,  MACGREGOR ROB R ,  SIERICHS WILLIAM C

IPC: C01B25/238 ,  C01B25/24 ,  C01B25/22

CPC classification number: C01B25/238 ,  C01B25/24

Abstract: A method of separating magnesium from wet-process phosphoric acid characterized in that the magnesium is separated as a readily filterable fluoride-phosphate complex compound containing magnesium and aluminum. The fluoride ion required for formation of the magnesium-containing precipitate is preferably formed by hydrolysis of fluorine compounds normally in the crude acid. In the case of insufficient quantities of any of said precipitation components, additions of such components are made to the acid or to the reaction components from which the acid is produced. The wet-process phosphoric acid low in magnesium is especially useful for production of stable ammonium polyphosphate fertilizer solutions.

Abstract translation: 从湿法磷酸中分离镁的方法，其特征在于将镁作为容易过滤的含镁和铝的氟化磷配位化合物分离。 形成含镁沉淀物所需的氟离子优选通常在粗酸中水解氟化合物来形成。 在没有任何所述沉淀组分的量不足的情况下，向酸或产生酸的反应组分添加这些组分。 低镁的湿法磷酸特别适用于生产稳定的多磷酸铵肥料溶液。

公开(公告)号：US3167588A

公开(公告)日：1965-01-26

申请号：US85659259

申请日：1959-12-01

Applicant: ALLIED CHEM

Inventor： MOORE JR WILLIAM P ,  SIERICHS WILLIAM C

IPC: B01J21/18 ,  B01J23/40 ,  B01J23/44 ,  C07C241/02

CPC classification number: B01J23/40 ,  B01J21/18 ,  B01J23/44 ,  C07C241/02 ,  C07C243/14

公开(公告)号：US3607018A

公开(公告)日：1971-09-21

申请号：US3607018D

申请日：1968-07-02

Applicant: ALLIED CHEM

Inventor： MOORE WILLIAM P ,  SIERICHS WILLIAM C

IPC: C01B25/41 ,  C05B13/06 ,  C01B25/30

CPC classification number: C05B13/06 ,  C01B25/414

Abstract: A mixture of alkali metal chloride and a reactive excess of phosphoric acid is heated in finely divided form at a temperature of about 250 to 400* C. for a period of time of about 1 to 100 seconds. The resulting alkali metal polyphosphates are separated from byproduct hydrogen chloride and quickly cooled to a temperature of less than about 80* C. The alkali metal polyphosphates are water-soluble and free of chloride ion and alkali metal metaphosphates.

公开(公告)号：US3447901A

公开(公告)日：1969-06-03

申请号：US3447901D

申请日：1967-08-15

Applicant: ALLIED CHEM

Inventor： MOORE WILLIAM P ,  SIERICHS WILLIAM C ,  MACGREGOR ROB ROY

IPC: B01J8/32 ,  C01B7/03 ,  C01F5/10 ,  C05D5/00 ,  C01B7/08 ,  C01F5/02

CPC classification number: C05D5/00 ,  B01J8/32 ,  C01B7/03 ,  C01F5/10