منابع مشابه
Structural and electrochemical characterization of a cerium(IV) hydroxamate complex: implications for the beneficiation of light rare earth ores.
Reaction of N-phenyl-pivalohydroxamic acid with Ce(III) precursors leads to a homoleptic hydroxamate complex: Ce(IV)[(t)BuC(O)N(O)Ph]4. Electrochemical experiments indicate a significant stabilization of the Ce(IV) cation at Ep,c = -1.20 V versus SCE in the hydroxamate ligand framework. The spontaneous oxidation of Ce(III) in a hydroxamate ligand field is discussed in the context of beneficiati...
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Different models are discussed to interpret the presence of kyanite as a stable phase in contact aureoles especially in the andalusite-, sillimanitebearing aureoles. In such aureoles the polymorphic sequence kyanite → andalusite → sillimanite can be explained in terms of an essentially isobaric path during which kyanite initially crystallises from the breakdown of pyrophyllite or more likely mu...
متن کاملHydrodynamic Characteristics of Dry Beneficiation of Iron Ore and Coal in a Fast Fluidized Bed
Iron ore and coal are the two major important raw materials being used in Iron making industries. Usually ore fines containing around 5% Alumina are rejected due to higher proportion of alumina. Therefore, a technology or process which may reduce the alumina content by 2% by beneficiation process will be highly attractive . In addition fine coals with ash content is used nearly 12% is directly ...
متن کاملDefects along kyanite-staurolite interfaces
The note describes (100) stacking faults in kyanite from a staurolite-kyanite intergrovrth with a displacement vector R : 7zb. Di-ffraction spots k * 2n are streaked and only with those reflections stacking faults are in contrast, which is interpreted as due to a displacement of thb on the,(100) faults. This produces groups of two corner-sharing tetrahedra. If stacking faults occur periodically...
متن کاملNanoscale particles in technological processes of beneficiation
BACKGROUND Cavitation is a rather common and important effect in the processes of destruction of nano- and microscale particles in natural and technological processes. A possible cavitation disintegration of polymineral nano- and microparticles, which are placed into a liquid, as a result of the interaction of the particles with collapsed cavitation bubbles is considered. The emphasis is put on...
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ژورنال
عنوان ژورنال: Refractories and Industrial Ceramics
سال: 2013
ISSN: 1083-4877,1573-9139
DOI: 10.1007/s11148-013-9570-2