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Institut za rudarstvo i metalurgiju Bor

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D (%)<br />

100<br />

90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2<br />

d (mm)<br />

Figure 1 Average granulometric composition of the ash and slag samples<br />

CONCLUSION<br />

From Table 5 and figure 1, a conclusion<br />

could be made about the presence of<br />

fine fraction below 0.038 mm (dust) in<br />

weight of 60.33%.<br />

Fine ash fractions can have a strong<br />

degradation effect on the environment,<br />

especially in the period of strong winds,<br />

which can lead to the major environmental<br />

problems, especially violations of public<br />

health, bearing in mind that this raw material<br />

categorized as the ha<strong>za</strong>rdous waste.<br />

This especially should be kept in mind<br />

when mechanized cleaning and transport<br />

of ash and slag from the cassettes in Medoševac<br />

to the landfill for permanent disposal<br />

of ash in the vicinity of nearby villages.<br />

In a view of its physical and chemical<br />

characteristics, the negative effects of ash<br />

on the environment are reflected through<br />

the pollution of air, surface and ground<br />

water, land, to the agricultural products,<br />

which directly threatens human health, in<br />

areas where those are. If it is possible to<br />

work on reducing the emergence due to<br />

minimize the occurrence of ash and slag.<br />

Regarding to the use of ash and slag in<br />

other industries, this type of materials can<br />

have significant use in the field of civil<br />

construction as a foundation for roads.<br />

The use of ash and slag like secondary<br />

materials could greatly reduce the amount<br />

of waste that is disposed in a landfill.<br />

No 1,2010. 67<br />

MINING ENGINEERING

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