METHOD OF PLATINUM PARTICLES RECOVERY FROM REACTION GAS IN THE PROCESS OF NITRIC ACID PRODUCTION AND GRANULAR COMPOSITE MATERIAL FOR RECOVERY OF SUCH PARTICLES

Title:

METHOD OF PLATINUM PARTICLES RECOVERY FROM REACTION GAS IN THE PROCESS OF NITRIC ACID PRODUCTION AND GRANULAR COMPOSITE MATERIAL FOR RECOVERY OF SUCH PARTICLES

Document Type and Number:

WIPO Patent Application WO2003015888

Kind Code:

A3

Abstract:

A method of recovering platinum particles from the flow of the reaction gas in the process of nitric acid production comprising passing the reaction gas through a layer of sorbent formed by a granular composite material, containing calcium oxide and binding agent, which includes magnesium oxide and calcium chloride or/and magnesium chloride with the following components ratio, in weight %: calcium oxide 50-75 magnesium oxide 20-35 calcium chloride or/and magnesium chloride, converting to Cl<-> 5-15. A granular composite material for recovering platinum particles form the flow of the reaction gas in the process of nitric acid production contains calcium oxide and binding agent that includes magnesium oxide and calcium chloride or/and magnesium chloride with the following components ratio in the final product, in weight %: calcium oxide 50-75 magnesium oxide 20-35 calcium chloride or/and magnesium chloride, converting to Cl<-> 5 -15. The invention allows to reach the concentration of platinum metals in the used sorbent up to 2.5%, to obtain sorbent of the required composition and porosity, in form of granules of any required shape, to increase the sorbent strength and simplify the technology of the recovery of precious metals from the used sorbent.

Inventors:

LAVRENKO ANTONINA OLEKSANDRIVN (UA)
LOBOYKO OLEKSIY YAKOVYCH (UA)
GRYN GRYGORIY IVANOVYCH (UA)
FEDORCHENKO TETYANA VIKTORIVNA (UA)
KOZUB PAVLO ANATOLIYOVYCH (UA)

Application Number:

PCT/UA2002/000035

Publication Date:

September 12, 2003

Filing Date:

August 19, 2002

Export Citation:

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Assignee:

PRYVATNA SIT FA (UA)
LAVRENKO ANTONINA OLEKSANDRIVN (UA)
LOBOYKO OLEKSIY YAKOVYCH (UA)
GRYN GRYGORIY IVANOVYCH (UA)
FEDORCHENKO TETYANA VIKTORIVNA (UA)
KOZUB PAVLO ANATOLIYOVYCH (UA)

International Classes:

B01J20/04; C01B21/26; (IPC1-7): B01D53/04; B01D49/00; B01D46/30; B01J20/04

Foreign References:

SU1720706A1	1992-03-23
SU1699597A1	1991-12-23
SU1787520A1
SU567487A1	1978-10-15
SU1353501A1	1987-11-23
RU2006285C1	1994-01-30

Other References: