Desain Pabrik Precipitated Calcium Carbonate (PCC) melalui Optimalisasi Limbah Steel Slag dan Blast Furnace Gas (BFG)

Dewanty, Amelia Febriola and Sari, Aprillia Permata (2026) Desain Pabrik Precipitated Calcium Carbonate (PCC) melalui Optimalisasi Limbah Steel Slag dan Blast Furnace Gas (BFG). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Precipitated Calcium Carbonate (PCC) merupakan komponen tambahan yang banyak digunakan pada industri plastik, karet, cat dan pelapis, perekat, hingga farmasi. Bersamaan dengan itu, upaya pemanfaatan limbah dan emisi semakin digencarkan karena steel slag, sebagai sumber CaCO₃, dan Blast Furnace Gas (BFG), sebagai sumber CO₂, dapat dimanfaatkan sebagai bahan baku produksi PCC. Hasil tinjauan beberapa teknologi proses, yaitu Karbonasi, Lime Soda, Solvay, dan SkyCycle, menggunakan framework AHP menunjukkan bahwa metode SkyCycle teknologi produksi inovatif yang tetap mempertahankan kualitas produk sembari memperhatikan aspek lingkungan dan keberlanjutan. Bahan baku steel slag dan BFG diperoleh dari PT Krakatau Posco dengan ketersediaan steel slag dari mencapai 350.000 ton/tahun dan BFG sebesar 2000 Nm3/jam. Proses produksi PCC dibagi menjadi empat unit besar, yaitu unit pre-treatment, presipitasi, post-treatment, dan recycle. Unit pre-treatment terdiri dari tahap size reduction, alkali fusion, water leaching, filtrasi I, dan acid leaching. Unit presipitasi terdiri dari tahap karbonasi dan presipitasi. Unit post-treatment terdiri dari tahap centrifuge I, filtrasi II, drying, dan size reduction. Unit recycle terdiri dari tahap evaporasi, kristalisasi, centrifuge II, kalsinasi, slaking, dan scrubber. Pabrik direncanakan beroperasi pada tahun 2030 di Kawasan Industri Krakatau, Cilegon, Banten, dengan kapasitas produksi 10.000 ton/tahun, menghasilkan PCC sebesar 1.262,6 kg/jam dengan kemurnian 96,6% dan kandungan air 1,0%. Analisis kelayakan ekonomi menunjukkan hasil yang prospektif dengan NPV sebesar Rp384.412.806.961,87, IRR 17,30%, payback period 5,54 tahun, dan BEP pada kapasitas 63,97%. Perancangan ini diharapkan menjadi alternatif pengembangan industri PCC yang efisien dan ramah lingkungan berbasis konsep green industry di Indonesia.
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Precipitated Calcium Carbonate (PCC) is a widely used additive in various industries, including plastics, rubber, paints and coatings, adhesives, and pharmaceuticals. This study investigates the design of a PCC production plant based on the utilization of steel industry waste, namely steel slag as a calcium source and Blast Furnace Gas (BFG) as a CO₂ source, both sourced from PT Krakatau Posco with an availability of 350,000 tons/year and 2,000 Nm³/hour, respectively. Process technology selection was carried out by evaluating four methods, namely Carbonation, Lime Soda, Solvay, and SkyCycle, using the Analytical Hierarchy Process (AHP) framework. The evaluation results indicate that the SkyCycle method is the most optimal technology, as it maintains product quality while fulfilling environmental and sustainability aspects. The production process is divided into four main units, comprising a pre-treatment unit (size reduction, alkaline fusion, water leaching, filtration, and acid leaching), a precipitation unit (carbonation and precipitation), a post-treatment unit (centrifuge, filtration, drying, and size reduction), and a recycle unit (evaporation, crystallization, centrifuge, calcination, slaking, and scrubber). The plant is planned to commence operations in 2030 at the Krakatau Industrial Estate, Cilegon, Banten, with a production capacity of 10,000 tons/year, yielding PCC at 1,262.6 kg/hour with a purity of 96.6% and moisture content of 1.0%. Economic feasibility analysis demonstrates promising results, with an NPV of IDR 384,412,806,961.87, IRR of 17.30%, payback period of 5.54 years, and BEP achieved at 63.97% capacity. This design is expected to serve as an alternative development pathway for a PCC industry that is resourceefficient and environmentally sound, grounded in the green industry concept in Indonesia.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Blast Furnace Gas, Industri Kertas, Precipitated Calcium Carbonate, SkyCycle, Steel Slag, Blast Furnace Gas, Paper Industry, Precipitated Calcium Carbonate, SkyCycle, Steel Slag.
Subjects:	T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Chemical Engineering > 24201-(S1) Undergraduate Thesis
Depositing User:	Amelia Febriola Dewanty
Date Deposited:	29 Jul 2026 07:38
Last Modified:	29 Jul 2026 07:38
URI:	http://repository.its.ac.id/id/eprint/139383

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