Conversion of nickel sulfates into hydroxide (II) / Bakirov A.R., Nizov V.A., Katyshev S.F. // Non-ferrous Metals. - 2014. - V. , l. 1. - P. 23-25.

ISSN:
20720807
Type:
Article
Abstract:
There was researched the conversion of nickel-ammonium sulfate to nickel (II) hydroxide. Periodical and uninterrupted methods were used for realization of conversion. Periodical method was realized in apparatus with blending machine, while uninterrupted method was realized in pulsator column. The target product was washed in ascending flow with varied hydrodynamic mode. Wipping of nickel hydroxide was carried out on laboratory vacuum filter at constant rarefaction. Nickel (II) hydroxide was dried in convective furnace with electromagnetic microwaved frequency field. Three modifications of nickel (II) hydroxide (two crystalline and one pseudo-amorphous) can be formed during the conversion process. The shape of nickel hydroxide is determined by the excess of precipitant and process temperature. Usage of the precipitant with concentration of less than 1.25 mol/l leads to formation of " spherical" nickel (II) hydroxide. Crystalline phase is mostly formed in the time of increasing of concentration of precipitant by more then 2.5 mol/l. With the precipitant concentration from 1.25 to 2.5 mol/l, the shape of nickel (II) hydroxide grains has a transition structure from spherical to crystalline shape and is mostly shown by scale-layered structure. Yield of crystalline phases mostly depends on precipitant temperature and rarely depends on the method of synthesis. Crystalline shapes of nickel hydroxide are characterized by lesser value of total specific surface and are released from the solution with lesser content of water phase. As a result of realization of developed technical methods, the total period of obtaining of nickel (II) hydroxide can be decreased by more than a half. © Design and make-up.
Author keywords:
Conversion; Crystalline nickel (II) hydroxide; Filtration; Fractioning; Hexahydrate nickel-ammonium sulfate; Microwave drying; Pulsator column; Spherical nickel (II) hydroxide
Index keywords:
нет данных
DOI:
нет данных
Смотреть в Scopus:
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904904056&partnerID=40&md5=650f2830377413c594d995ad9093d1d0
Соавторы в МНС:
Другие поля
Поле Значение
Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904904056&partnerID=40&md5=650f2830377413c594d995ad9093d1d0
Affiliations Nonorganic Substances Technology, Ural Federal University, Ekaterinburg, Russian Federation
Author Keywords Conversion; Crystalline nickel (II) hydroxide; Filtration; Fractioning; Hexahydrate nickel-ammonium sulfate; Microwave drying; Pulsator column; Spherical nickel (II) hydroxide
References Dasoyan, M.A., Khimicheskie istochniki toka. Vtoroe izdanie, pererabotannoe i dopolnennoe (1969) Chemical Sources of Current, p. 588. , Second edition, revised and enlarged). Leningrad : Energiya; Rutshteyn, V.E., Gorskaya, L.N., Sposob Polucheniya Nikelya (II) Gidroksida (1998) Method Of Nickel (II) Hydroxide Obtaining, , Patent RF, No 2138447 MPK 6 C 01 G 53/04 Applied May 26, Published: September 27, 1999; Gellershteyn, I.R., Klementev, M.V., Sposob izgotovleniya gidrata zakisi nikelya dlya akkumulyatornoy promyshlennosti (2000) Method of Obtaining of Nickelous Hydroxide for Accumulator Industry, , Patent RF, No 2178931 MPK 7 H 01 M 4/26 H 01 M 4/52 Applied November 08, Published: January 27, 2002; Volynskiy, V.V., Elektrokhimicheskaya energetika (2006) Electrochemical Energetics., 6 (3), pp. 150-156; Stepin, B.D., Metody polucheniya osobo chistykh neorganicheskikh veshchestv (1969) Methods of Obtaining of High Purity Nonorganic Substances, p. 480. , Leningrad : Khimiya; Chalyy, V.P., Gidrookisi metallov (1972) Metal Hydroxides, p. 154. , Kiev : Naukova Dumka; Sviridov, V.M., Sviridov, A.V., Sposob polucheniya gidroksida nikelya II (2002) Approach of Obtaining of Nickel (II) Hydroxide, , Patent RF, No 2208585 MPK 6 C 01 G 53/04 Applied March 11, Published: July 20, 2003; Nikolskiy, B.P., Grigorov, O.N., Pozin, M.E., Spravochnik khimika. Tom 2. Trete izdanie, ispravlennoe (1971) Chemist's Reference Book, 2, p. 1168. , Third edition, corrected). Leningrad : Khimiya; Nikel (II) Sernokislyy Semivodnyy, 1974, p. 11. , GOST 4465-74. Reaktivy Tekhnicheskie Usloviya. Vveden: 01 Yanvarya 1975 (State Standard 4465-74. Reagents. Heptahydrate nickel sulfate (II). Technical conditions. Introduced: January 01, 1975). Moscow : Russian State Standard : Standards' Publishing House; Karpacheva, S.M., Ryabchikov, B.E., Pulsatsionnaya apparatura v khimicheskoy tekhnologii (1983) Pulsation Apparatuses in Chemical Technology, p. 224. , Moscow : Chemistry
Publisher Ore and Metals" Publishing house"
Language of Original Document English
Abbreviated Source Title Non-ferrous Met.
Source Scopus