Brief description of the concentration of heat at low temperature of ores of nickel lateritic.

摘要

The limonite or mixtures of limonite / saprolite containing nickel are reduced to a heat in the form of pellets with a solid reducing agent and at a concentration of carbon dioxide. & br / the pellets are introduced into a reactor and heated gradually, with a reduction of the constituents metalliferous. They are then maintained at a temperature sufficiently high to allow the migration in the liquid phase of the substances to the inside of the pellets, but less than the point where the pellets become sticky. The atmosphere of this "zone of growth is checked with care in order to prevent the continuation of the reduction or a reoxidation, which provides a good environment for the growth of metal particles. The pellets are then cooled rapidly in order to avoid the conversion of wustite of magnetite and ground and the magnetic fraction is separated. & br / applicable to the extraction of nickel of minerals low.