Institut za rudarstvo i metalurgiju Bor

Where is:
Δ - volumetric density of sample;
m1- weight of sample and the court;
m - mass of the court;
V - volume of the court.
Volumetric density of ash samples are
given in table Table 2
Table 2 – Bulk mass of ash samples
Identification of Volumetric density
sample
kg/m 3
P1 0.6277
P2 0.6594
P3 0.6595
P4 0.6615
P5 0.660
P6 0.5769
P7 0.5988
P8 0.5849
P9 0.5810
P10 0.5952
P11 0.5823
P12 0.5950
Psr 0.6150
Determination of specific density
Determination the specific density of
ash and slag was done in the glass Pycnometer.
Calculation
Specific density of samples is calculated
by the following formula:
m2 − m1
⎛ kg ⎞
ρ =
ρ t
F'
⎜ ⎟
( m − ) − ( − ) ⎝ 3
4 m1
m2
m2
m ⎠
Where is:
m1 - mass of empty Pycnometer, (kg)
m2 - mass of Pycnometer with sample,
(kg)
m3 - weight of Pycnometer with sample
and water, (kg)
m4 – mass of Pycnometer with water,
(kg)
t ρ F - density of fluid (water) at the
temperature of measurement, (kg/m 3 )
Specific density of ash samples are
given in Table 3
Table 3 Specific density of ash and slag
samples
Identification of
sample
Specific density of
samples
(kg/m 3 )
P1 2220
P2 2270
P3 2220
P4 2250
P5 2270
P6 2380
P7 2380
P8 2370
P9 2390
P10 2380
P11 2370
P12 2370
Psr 2322.5
Determination of pH value in the solution
of ash and slag
Determination the pH of the solution of
ash and slag samples was carried out using
the Standard methods (SRPS EN 12176
2005).
Because they are the solid raw materials
- ash and clay, the principle of this
method is formation of the corresponding
aqueous suspensions and potentiometric
method for determination the pH value.
Results of measured pH values are
shown in Table 4.
No 1,2010. 65
MINING ENGINEERING