METHOD OF SILVER PURIFICATION Russian patent published in 1995 - IPC

Abstract RU 2034063 C1

FIELD: metallurgy. SUBSTANCE: before silver oxide isolation sodium nitrite is added to silver nitrate solution at heating and stirring up to pH 3.0-3.5. Precipitated silver nitrite is separated, washed and treated with sodium hydroxide solution up to pulp pH 11.5-12.5. Prepared silver oxide precipitate is dried and calcined, and metallic silver is obtained. Mother liquid after silver oxide precipitation is used for silver nitrite precipitation. EFFECT: improved method of silver purification. 1 tbl

Similar patents RU2034063C1

Title	Year	Author	Number
METHOD OF PREPARING AFFINATED SILVER FROM INDUSTRIAL PRODUCTS	1993	Golubova E.A. Mamonov S.N. Zolotov A.F.	RU2049131C1
METHOD OF RECOVERY OF NOBLE METALS FROM PRODUCTS CONTAINING SILVER CHLORIDE, METALS OF PLATINUM GROUP AND GOLD	1999	Sidorenko Ju.A. Efimov V.N. Moskalev A.V. El'Tsin S.I.	RU2164255C2
METHOD OF PROCESSING INDUSTRIAL PRODUCTS OF AFFINAGE OF PLATINUM GROUP METALS	1991	Sidorenko Ju.A. Mustafina G.F.	RU2044783C1
METHOD FOR EXTRACTION OF IRIDIUM OF MATERIAL CONTAINING METALS OF PLATINUM GROUP	1993	Sidorenko Ju.A. Il'Jashevich V.D.	RU2062804C1
METHOD OF CLEANING OF SILVER-BEARING MATERIAL	2012	Shipachev Vladimir Alekseevich	RU2514554C2
METHOD FOR OBTAINING RHODIUM AMMONIUM-SODIUM SALTS WITH REPRODUCTION OF SODIUM NITRITE	2000	Khodjukov B.P. Golubova E.A. Il'Jashevich V.D.	RU2190674C2
METHOD OF EXTRACTING PLATINUM FROM CHLORIDE SOLUTIONS	2000	Sidorenko Ju.A. Shul'Gin D.R. Nasonova V.A. Mal'Tsev Eh.V. Besprozvannykh I.V.	RU2175677C1
PROCESSING METHOD OF PRODUCTS, CONTAINING HYDROXIDES, SELENITES, TELLURITES, ARSENITES OF BASE METALS AND PLATINUM METALS	2007	Malakhov Vitalij Fedorovich Glukhov Vladimir Nikolaevich Malakhov Igor' Vital'Evich Merinov Roman Jur'Evich	RU2360867C1
METHOD FOR EXTRACTION OF GOLD FROM A CHLORIDE SOLUTION CONTAINING PLATINUM GROUP AND BASE METALS ADMIXTURES	1992	Filippov A.A. Zubareva G.N.	RU2009232C1
METHOD OF REPROCESSING IRON OXIDE BASED SEDIMENTS CONTAINING PRECIOUS METALS	2001	Sidorenko Ju.A. Gerasimova L.K. Mal'Tsev Eh.V. Moskalev A.V.	RU2204620C2

RU 2 034 063 C1

Authors

Mamonov S.N.

Golubova E.A.

Zolotov A.F.

Dates

1995-04-30—Published

1992-06-15—Filed