Institut za rudarstvo i metalurgiju Bor

PHYSICAL CHARACTERIZATION
OF ASH AND SLAG
In the physical characterization of ash
and slag dumps of the cassette-in Medoševac
the following tests were carried
out:
� Determination of moisture in the
samples;
� Determination of volumetric density;
� Determination of specific density;
� Determination of pH value in the solution
of ash sample;
� Determination of particle size composition
of the ash and slag.
Determination of moisture content in
the samples of ash and slag
For the determination of moisture
content in ash samples the VMK (valid
method of home) was used.
Determination of the sample moisture
(E.b.5: 2007).
The method involves the determination
of moisture content, immediately after the
exclusion of samples, drying in the Dryer
to achieve constant mass.
Calculation
Moisture content is calculated by the following
formula:
_
m1
m2
V = ⋅100
m1
(%)
Where is:
V-moisture content (%)
m1-mass of the sample before drying (g)
m2- mass of the sample after drying (g)
The percentage moisture content in the
ash samples are given in Table 1.
Table 1 Moisture content in the ash samples
Identification of
sample
Moisture content
%
P1 50.41
P2 45.40
P3 46.86
P4 47.37
P5 48.93
P6 48.96
P7 48.05
P8 48.20
P9 49.83
P10 46.82
P11 51.02
P12 49.82
Psr 48.47
Determination of volumetric density
VMK (valid method of home) was
used to determine the volumetric density
of ash and slag samples.
Determination the volumetric density
of samples (E.b.11: 2007).
The method includes determination the
mass of sample without compress in the
court known volume V and the mass m.
Calculation:
Volumetric density is calculated by the
following formula:
m m
V
_
= 1
Δ , (kg/m 3 )
No 1,2010. 64
MINING ENGINEERING