Loesche Coal Mill for Cement Plant: Case Study at PT Semen Padang

We provide a wide range of mills — including Raymond mill, trapezoidal mill, vertical mill, ultrafine mill, and ball mill, obtained ISO9001 international quality certification, EU CE certification, and Customs Union CU-TR certification. Suitable for processing minerals such as limestone, phosphate, quicklime, kaolin, talc, barite, bentonite, calcium carbonate, dolomite, coal, gypsum, clay, carbon black, slag, cement raw materials, cement clinker, and more.

The discharge range of these mills can be adjusted to meet specific processing needs, typically from 80-400 mesh, 600-3250 mesh, and can achieve the finest particle size of up to 6000 mesh(D50).

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Loesche Coal Mill for Cement Plant: Case Study at PT Semen Padang

In the heart of Indonesia’s cement industry, PT Semen Padang stands as a testament to innovation and efficiency. Their relentless pursuit of operational excellence led them to implement a Loesche coal mill system, a decision that has significantly enhanced their production capabilities. This case study delves into the practical application and benefits observed at the plant.

Operational Challenges and the Loesche Solution

Prior to the installation, the plant faced common industry challenges: inconsistent coal fineness affecting kiln combustion, higher-than-desired energy consumption, and maintenance downtime. The existing grinding system struggled to keep pace with the demanding production schedule, leading to bottlenecks. The introduction of the Loesche coal mill marked a turning point. Its robust design, featuring large-scale rollers and a dynamic classifier, provided the stability and precision required for optimal kiln feed preparation.

The mill’s ability to handle varying moisture content in the coal without compromising on grinding efficiency was a key advantage. The integrated drying chamber utilizes waste heat from the kiln, making the entire process remarkably energy-efficient. Plant engineers reported a noticeable reduction in specific energy consumption per ton of coal ground, directly impacting the bottom line.

Enhancing Grinding Capabilities with Advanced Technology

While the Loesche mill excels in coarse to medium-fine grinding of coal for kiln firing, plants like PT Semen Padang often have parallel needs for ultra-fine materials in other applications, such as specialty cements or additives. For these ultra-fine grinding requirements, where a fineness between 325-2500 meshes is crucial, a different technological approach is needed.

For instance, our MW Ultrafine Grinding Mill is expertly designed for such precise tasks. It handles an input size of 0-20 mm with a capacity ranging from 0.5 to 25 tph. This mill is perfect for customers who need to make ultra-fine powder from materials like limestone, calcite, or even petroleum coal. It features a highly efficient cage-type powder selector based on German technology, allowing for precise fineness adjustment. A significant operational benefit is the absence of rolling bearings and screws in the grinding chamber, eliminating common failure points and enabling worry-free, continuous 24/7 operation. Furthermore, its efficient pulse dust collector and muffler ensure the production process is both dust and noise-controlled, adhering strictly to environmental standards.

Results and Future Outlook at PT Semen Padang

The integration of the Loesche mill system has yielded impressive results for PT Semen Padang. They have achieved a more stable kiln operation due to consistent coal quality, leading to improved clinker quality and reduced fuel consumption. Maintenance intervals have been extended thanks to the mill’s durable construction and smart design, which minimizes wear and tear.

The success of this project underscores the importance of selecting the right technology for specific grinding tasks. For high-capacity coal grinding, the Loesche mill is an industry benchmark. For ultra-fine powder production, technologies like our MW Ultrafine Grinding Mill offer unparalleled precision and efficiency. PT Semen Padang’s experience demonstrates that a strategic investment in advanced milling technology is a powerful driver for productivity, sustainability, and profitability in modern cement manufacturing.