SATKINSK DEPOSIT MAGNESITE ENRICHMENT
BY AN X-RAY TRANSMISSION METHOD
L. M. Aksel’rod,
M. O. Turchin,
M. I. Nazmiev,
E. V. Manuilova,
and I. I. Galikhanov
Translated from Novye Ogneupory, No. 3, pp. 8 – 12, June, 2016.
Original article submitted March 10, 2016.
Industrial test approval is carried out in AO Magnezit Combine for Satkinsk magnesite separation technology
using an x-ray transmission separator XSS(T). Favorable results are obtained with a “dry” enrichment method
of x-ray transmission separation. A procedure is worked out for enriching magnesia raw material of different
quality using magnesite (SiO
content not more than 1.1%; CaO not more than 2.1%) corresponding to speci
fications for producing standard grades of basic composition objects.
Keywords: magnesite, enrichment, x-ray transmission method, concentrate, enrichment tailings.
In the Satkinsk group natural magnesite deposit there are
dolomite, calcite, quartz, diabase, iron-containing mineral
impurities. Impurity materials containing silicon and calcium
oxides are particularly harmful as during magnesite firing
they form readily melting compounds.
Technology for enrichment of Satkinsk deposit
magnesite ores in heavy aqueous suspensions with prepara
tion of concentrate has been used since the 1970s [1 – 3].
Preparation of high quality raw material for manufacturing a
refractory product is accomplished in a section of the crush
ing and enrichment plant (CEP) by separation of magnesite
and barren ore in a suspension having medium density. How
ever, within the overall volume of raw magnesite entering the
section, often there is magnesite containing silicon and cal
cium for which it impossible to use as the final product for
object manufacture. This occurs due to the fact that
magnesite containing an acceptable level of silicon and cal
cium and magnesite that is substandard with respect to con
tent of these substances, have almost identical density. To the
disadvantages of heavy-medium enrichment it is also neces
sary to add a requirement for obtaining ferrosilicon, constant
preparation of a ferrosilicon suspension, and consumption of
water and electrical energy, required for slurry utilization .
In addition, a trend develops in deterioration of the qual-
ity characteristics of reserves and use in operation of deposits
that are lean ores, and it is also important to reduce
technogenic dumps. Reprocessing of subsidiary ores by
methods of “complete” enrichment, and this also relates to
heavy medium enrichment, becomes economically inexpedi-
ent in view of the fact that rock material crushing and milling
(first stage of “complete” enrichment) up to 70% of the en
ergy expended in the whole enrichment process is used.
A considerable amount of barren rock is processed .
In view of this it is necessary to reconsider technology
for ore preparation with organization of preliminary
coarse-lump sorting without using water. There are a number
of specifications for this preparatory sorting stage: greater
productivity, a lower energy content, the possibility of pro
cessing material with a broad size range, ecological security,
and minimum useful component loss.
The most promising way of resolving the problem is use
of x-ray transmission methods for mineral raw material en
richment , during which the following production prob
lems are resolved:
– preliminary rock material sorting;
– separation of large size tailings;
– preparation of commercial large size concentrate;
– separation of rock material into technogenic types and
sorts, whose processing should be performed by different en
Refractories and Industrial Ceramics Vol. 57, No. 3, September, 2016
1083-4877/16/05703-0229 © 2016 Springer Science+Business Media New York
OOO Gruppa Magnezit, Moscow, Russia.
OOO Gruppa Magnezit, Satka, Chelyabinsk Region, Russia.