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2 443 622

(13)

(51)

IPC

C01B25/20(2006-01-01)

(21) (22)

Application

2010126089/05, 2010-06-25

(24)

Start date

2010-06-25

(22)

Actual filing date

2010-06-25

(45)

Published

2012-02-27

(72)

Inventor

Aliev Zazav MustafaevichShapiev Bammatgerej IslamgereevichMagomedova Dzhamilja ShamilovnaTomilov Andrej PetrovichChachakova Madina KrymovnaMagomedov Sharapudin AbdurakhmanovichAdiev Magomedkhabib Magomedovich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Dagestanskij Gosudarstvennyj Universitet

METHOD OF PRODUCING PHOSPHORIC ACID Russian patent published in 2012 - IPC C01B25/20

Abstract RU 2443622 C1

FIELD: process engineering.

SUBSTANCE: invention may be used for production of inorganic substances. Proposed method comprises heating fused contaminated phosphorus sludge, combusting and hydrating it. Process is realised in autoclave whereto excess-pressure oxygen is fed after heating phosphorus with said sludge to 60°C. Then, phosphorus pentoxide is absorbed by water to form phosphoric acid while sludge is accumulated in inner chamber.

EFFECT: higher efficiency, production of high-purity phosphoric acid, no losses of P₂O₅.

1 dwg, 2 ex

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RU 2 443 622 C1

Authors

Aliev Zazav Mustafaevich

Shapiev Bammatgerej Islamgereevich

Magomedova Dzhamilja Shamilovna

Tomilov Andrej Petrovich

Chachakova Madina Krymovna

Magomedov Sharapudin Abdurakhmanovich

Adiev Magomedkhabib Magomedovich

Dates

2012-02-27—Published

2010-06-25—Filed