Caracterización químico estructural de un concentrado cromífero procedente del yacimiento Merceditas y valoración de su posible uso como materia prima en tratamientos difusivos

Abstract

In Cuba important chromium mineral reserves exist. Within the
Cuban chromites deposits Merceditas for its levels and exploitation stands out.
In this work the mineralogical characterization of chromite concentrated belonging
to the deposit previously mentioned is presented and its possible use as carrying
silicon and chromium source in diffusive process is valued. The determination
of the chemical composition of the concentrate was carried out by means of
the gravimetric and volumetric methods, whereas for the identification of its
phases techniques of Infrared and Mössbauer Spectroscopies, and X-Rays diffraction
were used. Additionally the statistical parameters of the grain sized
distribution from a sifted process were determined. It is established from its
chemical composition, that the concentrate is refractory and that the chromium,
iron, aluminum, magnesium, silicon and calcium appear in different proportions.
The chromium and silicon content in the concentrate and its relation are
similar to the previous reports for the application from diffusive processes of simultaneous
saturation with both elements, whereas the levels of aluminum and
magnesium combined with oxygen guarantee the refractivity of mixtures.