Prarancangan Pabrik Aluminium Fluorida dari Asam Fluosilikat dan Aluminium Hidroksida Kapasitas 40.000 Ton/Tahun

摘要

AlF3 products needed by industry consolidation Al to lower the melting pointudof Al, so a great need for fuel for the heat of fusion can be reduced. AlF3 needs isudincreasing from year to year, particularly the developed countries that have a lot ofudindustries Al in it such as China and India. This factory will be established in 2020 inudGresik with raw materials H2SiF6 and Al(OH)3 with production capacity of 40,000udtons/year.udThe reactor used is a reactor CSTR (Continuous Stirred Tank Reactor) whichudtook place in the exothermic solid-liquid phase with the operating conditions of 70°Cudand a pressure of 1 atm. The next main process is crystallization and drying. Toudproduce AlF3 with a capacity of 5050.505 kg / h takes H2SiF6 much as 8477.641 kg /udhr and Al(OH)3 as much as 4518.540 kg/hour. While the need for water utilities asudmuch as 2653.772 kg/hour of steam as much as 2666.488 kg/hour, as much asud1212.123 kW of electricity, compressed air as much as 115.582 kg/hour, the dieseludfuel as much as 69.986 liters/hour and propane as much as 553.510 kg/hour. Theudfactory operated for 330 days with the number of employees 202 people. Theudeconomic analysis shows the Percent Return on Investment (ROI) before tax ofud35.5% and 26.6% after tax. Pay Out Time (POT) before taxes for 2.20 years and 2.73udyears after tax for. Break Event Point (BEP) amounted to 49.38%, Shut Down Pointud(SDP) 27.97% and the Discounted Cash Flow (DCF) of 34.91%.udBased on the above results and to consider several aspects such as operatingudconditions instrument with atmospheric pressure and low temperature, the rawudmaterial is not volatile and hygroscopic, waste does not damage the environment andudlocation of the establishment of factories in the area of non-conflict, the plant AlF3 isudprofitable and feasible to set.udKeyword: aluminium fluoride, aluminium hydroxide, fluosilicic acid