Development in South Sumatra Province, especially in Palembang City uses fine aggregate sourced from rivers. The need for river sand plays an important role for industry, both as the main raw material and as a by-product. One of the mineral processing tools is a sluice box. This study uses three variations of deck slope, namely with a deck slope of 2.38° (5 cm), 4.74° (10 cm), and 7.12° (15 …