Electronic Theses and Dissertation

Prarancangan pabrik Ferrous Sulfate (FeSO4.7H2O¬) menggunakan steel pickling liquor dan asam sulfat (H2SO4) sebagai bahan baku. Kapasitas produksi sebesar 43.000 ton/tahun dengan waktu operasi 330 hari/tahun dan waktu 24 jam/hari. Pabrik ini direncanakan dibangun di Desa Roomo, Kecamatan Manyar, Kabupaten Gresik, Jawa Timur, Indonesia dengan luas area pabrik 18.647 m2. Bentuk perusahaan yang direncanakan adalah Perseroan Terbatas (PT) dengan menggunakan metode struktur organisasi garis dan staf dan tenaga kerja sebanyak 144 orang. Kebutuhan air untuk pabrik berasal dari Sungai Bengawan Solo dengan laju alir 14.609,5544 kg/jam, dan untuk kebutuhan listrik diperoleh dari generator dengan daya 1.042,5389 kW. Hasil analisis ekonomi diperoleh sebagai berikut:
1. Fixed Capital Investment (FCI) = Rp 875.495.428.963,96,-
2. Working Capital Investment (WCI) = Rp 218.873.857.240,99,-
3. Total Capital Investment (TCI) = Rp 1.094.369.286.204,95,-
4. Total Production Cost (TPC) = Rp 2.295.097.558.540,-
5. Sales Cost (SC) = Rp 2.807.018.972.140,-
6. Laba Bersih = Rp 399.298.702.608,-
7. Pay Out Time (POT) = 3,8 tahun
8. Break Event Point (BEP) = 30,43%
9. Internal Rate of Return (IRR) = 27,53%
Berdasarkan studi kelayakan teknis dan ekonomis diatas, maka dapat disimpulkan bahwa Prarancangan Pabrik Ferrous Sulfate ini layak untuk dilanjutkan ke tahap rancangan.

This preliminary of Ferrous Sulfate (FeSO4.7H2O¬) plant design uses steel pickling liquor and sulphuric acid (H2SO4) as raw materials. The production capacity is 43.000 tons/year with an operating time of 330 working days/year and 24 hours/day. This factory is planned to be built in Roomo Village, Manyar District, Gresik Regency, Jawa Timur, Indonesia with a factory area of 18.647 m2. The planned form of the company is a Limited Liability Company (PT) using the line organizational structure method and a workforce of 144 people. The air requirement for the factory comes from the Bengawan Solo River with a flow rate of 14.609,5544 kg/hour, and for electricity needs it is obtained from a generator with a power of 1.042,5389 kW. The results of the economic analysis are obtained as follows: 1. Fixed Capital Investment (FCI) = Rp 875.495.428.963,96,- 2. Working Capital Investment (WCI) = Rp 218.873.857.240,99,- 3. Total Capital Investment (TCI) = Rp 1.094.369.286.204,95,- 4. Total Production Cost (TPC) = Rp 2.295.097.558.540,- 5. Sales Cost (SC) = Rp 2.807.018.972.140,- 6. Net Profit = Rp 399.298.702.608,- 7. Pay Out Time (POT) = 3,8 year 8. Break Event Point (BEP) = 30,43% 9. Internal Rate of Return (IRR) = 27,53% Based on the technical and economic feasibility studies above, it can be concluded that the Preliminary Plant Design of the Ferrous Sulfate Plant is feasible to proceed to the design stage.