Shaking Table Deck Inclination Variation in SHP Reprocessing: X-Ray Fluorescence-Based Analysis of Sn Concentrate Grade

Khairunisa Putri Amalia (Department of Mining Engineering, Faculty of Engineering, Universitas Negeri Padang)
Tri Gamela Saldy (Department of Mining Engineering, Faculty of Engineering, Universitas Negeri Padang)
Rangga Agung Pribadi Heriawan (Department of Mining Engineering, Faculty of Engineering, Universitas Negeri Padang)
Heri Prabowo (Department of Mining Engineering, Faculty of Engineering, Universitas Negeri Padang)

MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering
Vol 8 No 1 (2026): Motivection : Journal of Mechanical, Electrical and Industrial Engineering

Processing residue from tin beneficiation still contains unrecovered cassiterite that can be upgraded through gravity concentration. This study describes the variation in tin (Sn) concentrate grade obtained from Sisa Hasil Pengolahan (SHP) at PT Timah Tbk under different shaking table deck inclination settings and actual plant operating conditions. Experiments were conducted at a constant water flow rate of 0.43 L/s using three deck inclinations: 1.5°, 2.0°, and 2.5°. Each condition was tested in three repetitions. Feed and concentrate samples were dried, homogenized, ground, and analyzed using X-ray fluorescence (XRF). The mean concentrate grade increased from 4.77% Sn at 1.5° to 11.58% Sn at 2.0° and 13.02% Sn at 2.5°. These results indicate that higher deck inclination within the tested range corresponded to improved concentrate grade. However, the findings remain descriptive because recovery, mass balance, and inferential statistical analysis were not included.