Institut za rudarstvo i metalurgiju Bor

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Dry concentrate t 5,226 10.563 5.820 3.128 7.863 32.600 Copper in concentrate % 12.76 10.16 12,56 12,76 12,71 11,87 Copper in concentrate t 667 1.073 731 399 1.001 3.871 Gold in concentrate g/t - 2,6498 2,197 2,396 2,688 2,464 Gold in concentrate kg - 27,988 12,788 7,493 21,14 69,409 Silver in concentrate g/t - 13,100 19,973 15,389 19,719 19,001 Silver in concentrate kg - 138,373 116,246 48,13 155,055 457,804 Copper recovery % 63.47 57.05 51,28 36,57 36,20 47,13 Gold recovery % - - 35,32 28,20 21,09 25,41 Silver recovery % - - 11,38 11,90 11,93 11,72 Operation times of mills h 1,926 4,580 3.458 1.776 5.240 16.980 Time recovery % 21.99 52.28 38,15 20,27 59,82 32,30 Horly capacity-wet t/h 82.90 73.10 78,50 78,30 74,20 76,18 The satisfactory technological results have not been realized yet, what could be seen from Table 2. This slag is extremely resistant to fragmentation, what could be seen from the Bond work index value, 25kWh/t for the rod mill and 30 kWh/t for the ball mill. An example of this is the consumption of electricity and metals in Table 3, which is shown in the achieved consumption of normative material 2 in processing of smelter slag. [2] Table 3. Consumption of normative material in processing of smelter slag Normative material Unit measure 2002 2003 2004 Year 2005 2006 02-06 Unit measu re Per ton Lumpy lime t 570 2.046 2.163 1.081 3.329 9.189 kg/t 7.15 Frother kg 1.567 4.988 3.341 1.685 4.627 16.208 g/t 12.62 Collector kg 8.439 23.185 15.430 9.620 26.930 83.604 g/t 65.09 Steel linings kg 40.431 36.938 40.700 41.791 67.177 267.468 kg/t 0.208 Rubber linings kg - 8.115 - 6.891 1.115 16.121 kg/t 0.012 Steel rods t 149.4 417,6 389,1 228,3 573,2 1.757,4 kg/t 1,368 Steel balls t 121,5 288,82 301,0 153,0 390,5 1.254,82 kg/t 0.977 Oil and grease kg 2.828 6.211 8.227 6.615 8.565 32.446 kg/t 0.025 Ekec.energy MWh - 19.159 14.094 7.619 20.034 60.906 kWh/t 54.09 Filter cloth m 2 59 117 79 62 199 516 m 2 /t 0.0004 Industrial water m 3 x10 3 240,2 706 697,7 401,9 644,02 2.689,82 m 3 /t 2.094 Problems in processing the smelter slag are present, and the expected positive economic effects are also present. The additional reserches of smelter slag characteristics are required as well as the possibilities for improvement the technological indicators, and thus the economic effects of processing. For this reason, the experiments of the flotation process were carried out for considering No 1,2010. 111 MINING ENGINEERING
the effect of grinding fineness on copper recovery in basic concentrate. EXPERIMENTAL PART Milling experiments were carried out in the elliptical ball mill, volume 15.2 dm 3 . Mass of ball charge at the beginning of testing was 12 kg. For one experiment, 870 g of slag was ground with solid content of 75%. For determination the dependence of class content - 75μm on grinding time, four samples were ground. Table 4 presents the grain-size distribution of ground samples. Table 4. Grain-size distribution of grinding products for various grinding times. Grinding time, min Size class, μm 10 15 20 30 m% D% m% D% m% D% m% D% -425+300 0,4 100,0 -300+212 2,6 99,6 0,4 100,0 0,8 100,0 0,4 100,0 -212+106 23,0 97,0 14,8 99,6 4,4 99,2 1,6 99,6 -106+75 15,6 74,0 15,2 84,8 12,0 94,8 5,2 98,0 -75+53 11,4 58,4 12,4 69,6 12,0 82,8 9,6 92,8 -53+38 8,8 47,0 10,4 57,20 13,2 70,8 12,0 83,2 -38+0 38,2 38,2 46,8 46,8 57,6 57,6 71,2 71,2 Figure 1 presents the grain-size distribution of grinding products in various grinding times, and Figure 2 presents the Prosev sita , % 100 80 60 40 20 dependence of size-class content -75μm on grinding time. Vreme mlevenja 0 0 100 200 300 400 Otvor sita , μm 10 min 15 min 20 min 30 min Figure 1. Grain-size distribution of grinding products in various grinding times No 1,2010. 112 MINING ENGINEERING
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INSTITUT ZA RUDARSTVO I METALURGIJU
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KOMITET ZA PODZEMNU EKSPLOATACIJU Y
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Analizirajući ovaj način uzorkova
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SADRŽINA UPROŠĆENOG RUDARSKOG PR
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COMMITTEE OF UNDERGROUND EXPLOITATI
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area is constantly increased. Figur
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CONTENT OF THE SIMPLIFIED MINING PR
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U morfološkom smislu, teren predst
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Rezultati terenski istraživanja i
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In morphological terms, the terrain
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GEO-MECHANICAL FEATURES OF THE TERR
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Sl. 3. Smičući naponi u konstrukc
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Na modelu bojom su razgraničeni od
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Figure 3. Shear stresses in collect
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Dumped material and collector eleme
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PODRUČJE ISTRAŽIVANJA Aleksinačk
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Da bi se izbor otkopne mehanizacije
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lansnih rezervi uglja, a druga za g
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veličina i takođe zahteva neophod
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exploitation, two variants of this
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esses, require the use of modern sy
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• method without underground room
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directly used to drive power plants
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gde je: Δ - nasipna masa uzorka; m
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Page 68 and 69: Where is: Δ - volumetric density o
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Page 74 and 75: PRORAČUN STABILNOSTI SOFTVEROM GEO
Page 76 and 77: Sl. 6. Izgled klizne ravni i koefic
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Page 90 and 91: Table 2. Degrees of metal leaching
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Page 100 and 101: is very abundant feeding aquifers.
Page 102 and 103: Start-minute maximum intensity of d
Page 104 and 105: Figure 3. Operation diagram of pump
Page 108 and 109: Zlato u koncentratu kg - 27,988 12,
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Page 136 and 137: z and r - cylindrical coordinates
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Page 146 and 147: Practically, the “in-situ” expl
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phase are presented by andesite bas
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Figure 1. Hydro-geology maps of the
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Spring 2 Figure 3. Circle diagram o
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12. Lead (Pb)
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ecreational activities. The beginni
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UTICAJ GRANULOMETRIJSKOG SASTAVA ML
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SADR@AJ CONTENS D. Sokolović, D. E
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Institut za rudarstvo i metalurgiju Bor

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