Patenton — panteon of patents

(19)

RU

(11)

2 032 622

(13)

C1

(51)

IPC

(21) (22)

Application

4903715/26, 1991-01-21

(22)

Actual filing date

1991-01-21

(45)

Published

1995-04-10

(72)

Inventor

Gol'Dinov A.L.Denisov A.K.Novoselov F.I.Utkin V.V.Loginov N.D.Sezemin V.A.Abramov O.B.Afanasenko E.V.Vandyshev S.A.

(73)

Holder

Kirovo-Chepetskij Khimicheskij Kombinat

METHOD FOR PREPARING STRONTIUM-CONTAINING CONCENTRATE Russian patent published in 1995 - IPC

Abstract RU 2032622 C1

FIELD: production of strontium compounds. SUBSTANCE: apatite is treated by nitric acid. Thus prepared nitrate extract is separated and condensed. Condensed portion of nitrate-phosphate solution is separated by decantation. The process is followed by filtration and by cooling to isolate tetrahydrate of calcium nitrate as crystals. Thus prepared crystals are washed by nitric acid and recycled for processing apatite. Condensed portion of nitrate extract is diluted by nitric acid. Thus obtained mixture is filtered to isolate desired product. EFFECT: improves efficiency of the method. 1 tbl

Similar patents RU2032622C1

Title Year Author Number
METHOD OF PROCESSING PHOSPHATE RARE-EARTH CONCENTRATE ISOLATED AT NEUTRALIZATION OF NITROGEN-PHOSPHATE SOLUTION OBTAINED AFTER APATITE OPENING WITH NITRIC ACID 1992
  • Gol'Dinov A.L.
  • Denisov A.K.
  • Novoselov F.I.
  • Utkin V.V.
  • Abramov O.B.
  • Afanasenko E.V.
 RU2086507C1
METHOD OF RECOVERING STRONTIUM-CONTAINING CONCENTRATE 2003
  • Abramov O.B.
  • Bojkov S.V.
  • Afanasenko E.V.
  • Garaev R.M.
  • Gonchar Ju.M.
  • Zakharova O.M.
  • Mukhacheva T.E.
  • Sezemin V.A.
  • Koshcheev V.A.
 RU2250197C1
METHOD OF PRODUCING GRANULAR MINERAL FERTILISER 2012
  • Mukhacheva Tat'Jana Efimovna
  • Medjantseva Dar'Ja Gennad'Evna
  • Zakharova Ol'Ga Mikhajlovna
  • Shevelev Aleksandr Nikolaevich
  • Garaeva Larisa Valer'Evna
  • Koshcheev Vladimir Anatol'Evich
  • Severjukhin Andrej Vladimirovich
 RU2530148C2
METHOD OF SODIUM FLUOSILICATE PRODUCING 1991
  • Gol'Dinov A.L.
  • Denisov A.K.
  • Novoselov F.I.
  • Abramov O.B.
  • Zakharova O.M.
  • Utkin V.V.
  • Sezemin V.A.
  • Vandyshev S.A.
 SU1817439A1
PROCESS FOR PRODUCING CALCIUM CARBONATE 1992
  • Gol'Dinov A.L.
  • Denisov A.K.
  • Novoselov F.I.
  • Utkin V.V.
  • Loginov N.D.
  • Sezemin V.A.
  • Abramov O.B.
  • Zakharova O.M.
 RU2036147C1
METHOD OF DICALCIUM PHOSPHATE PRODUCING 1990
  • Gol'Dinov A.L.
  • Denisov A.K.
  • Abramov O.B.
  • Afanasenko E.V.
  • Utkin V.V.
  • Sezemin V.A.
  • Novoselov F.I.
  • Migachev Ju.P.
  • Afanasenko B.P.
  • Vojtsekhovskaja A.L.
 RU2023658C1
METHOD OF ISOLATING STRONCIUM NITRATE PRECIPITATE 0
  • Goldinov Avram Lipovich
  • Romanov Evgenij Ivanovich
  • Novoselov Fedor Ivanovich
  • Abramov Oleg Borisovich
  • Afanasenko Elena Vasilevna
  • Afanasenko Boris Pavlovich
 SU763305A1
METHOD OF PURIFICATION OF CALCIUM NITRATE SOLUTION 1989
  • Gol'Dinov A.L.
  • Novoselov F.I.
  • Utkin V.V.
  • Sezemin V.A.
  • Abramov O.B.
  • Zakharova O.M.
  • Kiselevich P.V.
  • Naumov A.A.
 SU1656831A1
METHOD FOR PURIFICATION OF SOLUTION OF CALCIUM NITRATE 1989
  • Gol'Dinov A.L.
  • Denisov A.K.
  • Novoselov F.I.
  • Utkin V.V.
  • Sezemin V.A.
  • Abramov O.B.
  • Zakharova O.M.
  • Kiselevich P.V.
  • Naumov A.A.
 SU1830888A1
METHOD OF CALCIUM FLUORIDE PRODUCING 1994
  • Gol'Dinov A.L.
  • Denisov A.K.
  • Novoselov F.I.
  • Utkin V.V.
  • Loginov N.D.
  • Sezemin V.A.
  • Abramov O.B.
  • Bajbakov P.Ja.
 RU2091310C1

RU 2 032 622 C1

Authors

Gol'Dinov A.L.

Denisov A.K.

Novoselov F.I.

Utkin V.V.

Loginov N.D.

Sezemin V.A.

Abramov O.B.

Afanasenko E.V.

Vandyshev S.A.

Dates

1995-04-10—Published

1991-01-21—Filed

read Similar patents