Steel & Smelter Industry
Industrial mineral solutions — PT Wira Energi Utama, North Sulawesi
Steel & Smelter Industry Overview
The steel and smelter industry is the largest consumer of quicklime (CaO) and lumpy limestone as fluxing agents. Growth in Indonesia's nickel and steel industry — driven by the national downstreaming program — demands high-quality flux minerals. PT WEU serves Sulawesi-based smelters, the world's largest nickel processing hub.
Products Used
Flux agent primer dalam blast furnace dan kiln smelter nikel, 30–80mm
High-activity flux untuk EAF, pemurnian baja, dan pengelolaan slag
Role of Limestone / CaCO3 in Steel & Smelter Industry
Limestone and quicklime function as fluxing agents in blast furnaces, EAF, and smelter rotary kilns. At >1,200°C, CaO reacts with SiO2, Al2O3, and S impurities to form slag, separating from molten metal. High CaO purity (>90% for quicklime) reduces flux consumption and improves metal yield.
Technical Requirements
| Parameter | Value / Standard |
|---|---|
| CaO (Batu Kapur) | > 55% |
| SiO2 Maksimum | < 0.5% |
| CaO Aktif (Kapur Bakar) | > 90% |
| Ukuran Lumpy | 30–80 mm |
| MgO Maksimum | < 1.5% |
| Sulfur (S) | < 0.05% |
Process Integration
- 1
Pererimaan & Screening
Batu kapur/kapur bakar diterima, discreen sesuai ukuran spesifikasi, dan dianalisis CaO/MgO.
- 2
Charging ke Furnace
Flux dimasukkan ke blast furnace/EAF bersama ore untuk proses peleburan.
- 3
Reaksi Fluxing
CaO bereaksi dengan SiO2, Al2O3, dan S pada suhu >1.200°C membentuk slag cair.
- 4
Slag Separation
Slag mengapung di atas logam cair dan dipisahkan secara gravitasi dari molten metal.
- 5
Refining
Logam murni diproses lebih lanjut; slag didinginkan dan dapat dimanfaatkan sebagai agregat.
Industry Pain Points
Kandungan SiO2 >1% dalam flux meningkatkan konsumsi CaO dan menurunkan yield logam hingga 2–3%
Pasokan flux terputus menyebabkan downtime furnace — setiap jam shutdownbernilai ratusan juta rupiah
Kadar moisture tinggi pada kapur bakar meredam reaktivitas dan meningkatkan konsumsi energi kiln
Ukuran lumpy tidak seragam menyebabkan channeling dalam blast furnace dan inefisiensi distribusi gas
Optimize Your Steel & Smelter 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 lumpy limestone 30–80mm with only 0.35% SiO2 — far below steel industry tolerance. Quicklime with 92.1% available CaO and T60 reactivity <2 minutes ensures maximum fluxing efficiency. The 12m draft jetty enables bulk delivery directly to Sulawesi smelter docks.
Production Capability
- Crusher Capacity
- 250 TPH
- Monthly Output
- 150,000 MT
- Operations
- 24/7
- IUP OP Area
- 97.05 Ha
Use Case Simulation
Smelter nikel kapasitas 100.000 ton NPI/tahun membutuhkan ±12.000 MT flux/bulan. Dengan 2 tongkang PT WEU per bulan (7.500 MT/tongkang), kebutuhan flux terpenuhi dengan buffer stock 3.000 MT. COA per batch memastikan kadar SiO2 dan CaO sesuai target operasional tanpa analisis tambahan di smelter.
FAQ
Apakah batu kapur PT WEU cocok untuk smelter RKEF (Rotary Kiln Electric Furnace)?
Bagaimana cara pengiriman kapur bakar untuk smelter yang hygroscopic-sensitive?
Berapa lead time untuk pasokan regular smelter?
Apakah tersedia uji reaktivitas (slaking test) per batch?
Apakah PT WEU dapat membantu mengoptimalkan rasio flux untuk spesifikasi slag tertentu?
Related Industrial Exploration
Core Products
Logistics & Export
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Ready to Scale Your Steel & Smelter 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