Discontinuous Dense Phase System for Calcined Lime – Power Plant, Philippines

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Discontinuous Dense Phase System For Calcined Lime – Power Plant, Philippines

Client’s Overview

This case study focused on our customer, who is one of the leading power companies in the Philippines. The company utilises calcined lime in its circulating fluidised bed (CFB) coal power plant for emission control, converting it into gypsum. It helps the company to meet the environmental standards.

Why Macawber India was Called Upon

Macawber India was called upon to design a customised dense phase conveying system. The system to be made was intended to convey the calcined lime (limestone) from its storage area to the raw meal kiln. Through the customised system, the overall goal was to achieve an increased number of conveying cycles, higher overall capacity, and smooth, uninterrupted material transfer.

The Problem We Had to Solve


The two primary factors were particularly challenging for us. The first one was the high conveying capacity required, and the second was the long conveying distance. To ensure consistent, dust-free, and controlled material flow over long distances demanded a robust system engineered for minimal degradation and maximum operational uptime.

Solutions We Provided

To meet the client’s expectations, Macawber India designed a customised dense-phase pneumatic conveying system equipped with twin Macpump vessels operating in tandem. This innovative configuration enabled the system to feed two separate reception points without compromising efficiency and throughput.

System Advantages

Result Time

Through our customised conveying system, the result was an increased number of conveying cycles, higher overall capacity, and smooth and uninterrupted material transfer. The solution Macawber India provided not only met the plant’s technical requirements but also enhanced operational reliability, reduced maintenance needs, and ensured stable kiln feeding.

Project Summary Table

Material Limestone
Temperature Ambient
Bulk Density 1000 kg/m³
Particle Size 0 to 1.8 mm
Characteristics Free-flowing, abrasive, hygroscopic
Feed Points1 No
Reception Points2 Nos silos
Capacity60 TPH
Distance Horizontal400 M
Distance Vertical25 M

With this project, Macawber India reinforced its position as a leading solutions provider for pneumatic conveying systems in the cement industry, demonstrating its ability to engineer systems tailored to demanding industrial environments.

Also, over the past decade, Macawber India has been a trusted partner to major cement manufacturers in the Philippines, addressing their growing needs in pneumatic conveying and bulk material handling. If you are ready to elevate your plant’s efficiency, contact us now!

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Convey materials without any quality degradation with our highly efficient Dense Phase Pneumatic Conveying Systems.

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