EVALUASI PRODUK AGGLOMERASI (AGGLOMERATION PRODUCT) DENGAN METODE KAPPES PERCOLATION TEST PT. BUMI SUKSESINDO TUJUH BUKIT OPERATION BANYUWANGI JAWA TIMUR

Abstract

The agglomeration process occurs in the Ore Preparation Plant process section using an Agglomerator Drum, rocks originating from oxide ore that have been mined in the Pit are transported by the mining department and then crushed to obtain the optimal ore size, which is 38 - 75 mm. Then, the ore will be agglomerated with a binder in the form of cement and water which functions to bind ore particles that are too small so that a clump of ore is formed. In addition, the addition of cement is done to increase the pH of the ore. To determine the need for the right level of binder in various metallurgical laboratories, the Kappes Percolation Test can be carried out. The Kappes Percolation Test is also used as quality control of heap leach operations. This test has been developed since 1986 as a preparation step for stacking. There are several important properties obtained from the percolation test, some of which are as follows, Slump Percentage, Tapped slump percentage, Percolation Volume, Percolation Time, Percolation Rate, pH solution, and Percolation rate is a minimum of 10,000 l/m2/hr. so that permeation takes place properly so that an optimal pregnant leaching solution can be obtained, and the minimum pH solution is 10.5 which serves to bind CN- in the leaching process because CN- cannot be bound to ore at a low pH. At low pH, HCN gas can form which is dangerous for Heap Leaching Operation (HLO) workers. To obtain optimal permeation, it is also necessary to pay attention to the water content or moisture content of the agglomerate to be tested. The moisture content of the agglomerate required is 10 - 12% if it is too dry or lower than the parameter then permeation cannot run optimally because the solution will be absorbed without seeping down while if it is too wet or higher it can cause pounding. In the percolation test process, tapping is done which