Cement Industry
Industrial mineral solutions — PT Wira Energi Utama, North Sulawesi
Cement Industry Overview
The cement industry is the largest limestone consumer globally, using 60–70% limestone as the primary raw material for Portland clinker. PT Wira Energi Utama supplies high-CaO limestone from the Ratatotok formation in Southeast Minahasa — one of the highest-quality deposits in North Sulawesi.
Products Used
Bahan baku utama 60–70% untuk produksi klinker Portland
Filler penyesuai komposisi semen dan additive grinding aid
Role of Limestone / CaCO3 in Cement Industry
Limestone (CaCO3) is the essential raw material fed into rotary kilns at 1,400–1,500°C to produce clinker. The calcination reaction converts CaCO3 to CaO and CO2. High-CaO limestone (>55%) with low impurities produces premium quality clinker with optimal kiln efficiency.
Technical Requirements
| Parameter | Value / Standard |
|---|---|
| CaO Minimum | > 52% |
| SiO2 Maksimum | < 1.5% |
| MgO Maksimum | < 2.0% |
| Al2O3 Maksimum | < 0.5% |
| Moisture | < 5% |
| Ukuran Umpan Kiln | 10–80 mm |
Process Integration
- 1
Penerimaan Batu Kapur
Batu kapur diterima dari jetty/truk, dianalisis XRF, dan disimpan di stockpile tertutup.
- 2
Pre-Crushing
Ukuran direduksi menggunakan hammer crusher menjadi <80mm untuk umpan kiln yang konsisten.
- 3
Pre-Homogenization
Batu kapur dicampur dengan bahan koreksi (clay, iron ore) untuk target modul kimia klinker.
- 4
Rotary Kiln Calcination
Campuran dibakar pada 1.400–1.500°C menghasilkan klinker — produk antara semen.
- 5
Grinding & Finishing
Klinker digiling bersama gypsum dan additive untuk menghasilkan semen Portland final.
Industry Pain Points
Variasi kadar CaO >2% antar batch menyebabkan inkonsistensi modul kimia dan kualitas klinker
Kandungan MgO tinggi (>2%) memicu free lime berlebihan yang menurunkan kekuatan semen
Keterlambatan pasokan menghentikan operasi kiln — downtime >1 jam sangat merugikan
Biaya logistik jarak jauh meningkatkan COGS secara signifikan bagi pabrik semen regional
Optimize Your Cement Industry Supply Chain
Consult your specific industrial technical and logistics requirements with PT WEU experts for maximum operational efficiency.
PT WEU Value Proposition
PT WEU provides limestone with 55.20% CaO and hourly XRF quality control. With 250 TPH capacity and 12m draft jetty, we deliver continuous supply without interruption. North Sulawesi location and Bitung Port access significantly reduce logistics costs vs Java-based supply.
Production Capability
- Crusher Capacity
- 250 TPH
- Monthly Output
- 150,000 MT
- Operations
- 24/7
- IUP OP Area
- 97.05 Ha
Use Case Simulation
Pabrik semen kapasitas 3.000 TPD dengan kebutuhan batu kapur 5.400 ton/hari dapat dipenuhi dari pasokan tongkang mingguan PT WEU (7.500 MT/tongkang, 2 tongkang/minggu). COA per batch memastikan konsistensi modul LSF, SM, dan AM tanpa downtime analisis tambahan.
FAQ
Apakah batu kapur PT WEU sesuai untuk target LSF cement >95?
Bisakah ukuran disesuaikan untuk conveyor kami yang berukuran spesifik?
Apa lead time untuk kontrak semen reguler?
Apakah tersedia jaminan konsistensi kualitas bulanan?
Bagaimana penanganan jika ada variasi kualitas?
Related Industrial Exploration
Core Products
Logistics & Export
Business Support
Ready to Scale Your Cement Industry Operations?
Our technical team is ready to help you select the right mineral specification for your industrial process.
150K MT
/month capacity
250 TPH
Crusher Plant
Export
Ready Port Bitung