Feasibility Study for the Erection of a Ceramic Plant Made from Gold and Copper Mining Tailings in Timika District, Papua Province

Abstract

Wider use of tailings to overcome a large amount of waste from mining activities at P.T. Freeport-Timika, in this case, use is to make ceramics made from gold mining waste tailings of P.T. Freeport-Timika. Physically, the tailings composition consists of a 50% fine sand fraction with a diameter of 0.075 – 0.4 mm; the rest is a clay fraction with a diameter of 0.075 mm. The process of conducting a feasibility study for the construction of a ceramic factory made from the primary raw material of mining tailings begins with determining the raw materials to be used, namely: Plastic Material (Clay), Silica Sand, Dolomite, U5, Water Glass (Na2SiO3) and Tailings. The next step is to unravel. The process of making ceramics consists of two kinds: techniques for Single Firing and Double Firing. The Double Firing production process consists of seven methods: Body Preparation, Pressing, Biscuit Firing, Glaze Preparation, Glaze Application, Glost Firing, Sorting & Packing. Whereas in the Single Firing process, the production process does not go through the Biscuit Firing process but goes directly to the Glaze Application process. The optimal tailings composition for ceramics is 62.5%. The rest are Feldspar, Ball Clay, and Talc raw materials. The installed production capacity of the planned ceramic factory is 2000 M2/day or 600,000 M2/year, and the total demand for tailings for production per day is 35 tons The investment requirement for constructing a ceramic plant in Timika is Rp. 46,183,318,981. The biggest financing is the construction of civil construction factories, warehouses, workshops, and others, amounting to Rp.21,700,000,000. The Feasibility Value of the investment in constructing a ceramic plant in Timika is an NPV of Rp. 230,070,369, and the IRR value is 38%, so constructing a ceramic plant in Timika is said to be Financially Feasible.