## 3 Results
### Tribological Wear Tests of Technological Equipment Components in Patirs Quarry  
We conducted tribological tests using a TRB3 tribometer to assess the wear of the Komatsu WA470 front loader bucket knife (365 HB). Table 5 presents the results, detailing surface profile wear parameters (Ra, Rt) under varying loads, speeds, and cycle numbers. A Subtronic S128 profilometer was used to measure the Ra and Rt values. We observed the largest variation in Ra and Rt at 400 rpm, even under low load, with maximum values after 2000 cycles, indicating that both speed and cycle number significantly influence roughness. We also performed tribological tests on the Komatsu HB365 excavator bucket tooth (399 HB) using a TRB3 tribometer. Table 5 displays the wear parameters (Ra, Rt) under different test conditions. A Subtronic S128 profilometer was used to determine the Ra and Rt values. The maximum Rt reached 8.5 um after 2000 cycles. We noted a general trend of increased wear with higher load, though exceptions occurred. Wear values varied considerably under identical test conditions, suggesting uncontrolled factors influenced the results. While wear accumulates with cycle number, statistical validation is needed. The effect of speed may depend on load or other variables. We tested the Pucest panel with a perforated metal insert, a potential replacement for the sorting station trough, using a TRB3 tribometer. Table 6 shows surface profile wear parameters (Ra, Rt) for various test regimes. A Subtronic S128 profilometer was used to measure Ra and Rt. We found that Ra and Rt decreased with increasing load, from 4.2 um to 0.4-0.6 um and 39.5 um to 7.5-13 um, respectively. The material's elasticity minimized the influence of cycle number, with micro-deformations not leading to particle detachment. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Load (N)**} & \multirow{2}{*}{**Rotation Speed (rpm)**} & \multirow{2}{*}{**Number of Cycles**} & \multicolumn{2}{c}{**Wear of Excavator Bucket Tooth (μm)**} & \multicolumn{2}{c}{**Wear of Excavator Bucket Tooth (μm)**} \\ \cline{3-6}  & & & **Ra** & **Rt** & **Ra** & **Rt** \\ \hline \multirow{8}{*}{0} & \multirow{8}{*}{200} & initial & 0.8 & 5.5 & 0.8 & 5.5 \\  & & 500 & 0.6 & 6 & 0.6 & 6 \\  & & 1000 & 0.8 & 8 & 0.8 & 8 \\  & & 1500 & 0.8 & 8.5 & 0.8 & 8.5 \\  & & 2000 & 0.9 & 8.5 & 0.9 & 8.5 \\ \cline{2-6}  & & \multirow{8}{*}{400} & initial & 0.4 & 5 & 0.4 & 5 \\  & & 500 & 0.4 & 4 & 0.4 & 4 \\  & & 1500 & 0.4 & 4 & 0.4 & 4 \\  & & 2000 & 0.5 & 4.5 & 0.5 & 4.5 \\ \hline \multirow{8}{*}{2} & \multirow{8}{*}{200} & initial & 0.4 & 4 & 0.4 & 4 \\  & & 500 & 0.4 & 4.5 & 0.4 & 4.5 \\  & & 1000 & 0.4 & 5 & 0.4 & 5 \\  & & 1500 & 0.4 & 5.5 & 0.4 & 5.5 \\  & & 2000 & 0.6 & 6.5 & 0.6 & 6.5 \\ \cline{2-6}  & & \multirow{8}{*}{400} & initial & 0.4 & 4 & 0.4 & 4 \\  & & 500 & 0.4 & 4 & 0.4 & 4 \\  & & 1000 & 0.5 & 3.5 & 0.5 & 3.5 \\  & & 1500 & 0.4 & 4 & 0.4 & 4 \\  & & 2000 & 0.5 & 4 & 0.5 & 4 \\ \hline \multirow{8}{*}{5} & \multirow{8}{*}{200} & initial & 0.457 & 3.96 & 0.457 & 3.96 \\  & & 500 & 0.4 & 3.5 & 0.4 & 3.5 \\ \cline{1-1}  & & 1000 & 0.6 & 6 & 0.6 & 6 \\ \cline{1-1}  & & 1500 & 0.7 & 6 & 0.7 & 6 \\ \cline{1-1}  & & 2000 & 0.7 & 6 & 0.7 & 6 \\ \cline{1-1} \cline{2-6}  & & \multirow{8}{*}{400} & initial & 0.6 & 6 & 0.6 & 6 \\ \cline{1-1}  & & 500 & 0.6 & 6 & 0.6 & 6 \\ \cline{1-1}  & & 1000 & 0.7 & 6 & 0.7 & 6 \\ \cline{1-1}  & & 1500 & 0.8 & 6.5 & 0.8 & 6.5 \\ \cline{1-1}  & & 2000 & 0.8 & 7.5 & 0.8 & 7.5 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Experimental Data Matrix Resulting from Tribological Tests. We evaluated Hardox 400 steel, another potential material for sorting station troughs, with a TRB3 tribometer. Table 6 presents wear parameters (Ra, Rt) obtained under different test conditions. A Subtronic S128 profilometer was used to measure the surface profiles. We observed the largest Rt variation (28.5 \(\upmu\)m) after 2000 cycles, even under a low load of 2N.