The paper manufacturing industry in Tanzania is on a growth trajectory, driven by increasing domestic demand and regional trade opportunities. A critical aspect of modern, cost-effective paper production is the efficient generation of thermal energy for drying processes and power generation. Petroleum coke (petcoke), a by-product of oil refining, has emerged as a superior alternative to traditional fuels like coal due to its higher calorific value and cost efficiency. However, to utilize petcoke effectively in industrial boilers, it must be ground into a fine, consistent powder to ensure complete and efficient combustion. This necessitates reliable, high-capacity grinding technology tailored to the specific needs of the Tanzanian market, particularly for production lines requiring 20 to 30 tons per hour (TPH) of pulverized fuel.
Petroleum coke presents unique grinding challenges. Its characteristics can vary from soft sponge coke to hard needle coke, often with high hardness and abrasiveness. Efficient grinding requires equipment that can handle these variable properties while achieving a fine powder size (typically 80% passing 200 mesh) essential for suspension firing in boilers. Furthermore, the grinding system must be energy-efficient, have low maintenance requirements to ensure continuous operation, and be capable of integrating with drying systems, as petcoke often contains residual moisture. For a 20-30 TPH requirement, the mill must not only be powerful but also stable and reliable to support the continuous operation of a paper mill.
Shanghai Zenith Machinery Co., Ltd. is an excellent manufacturer of ore grinding equipment in China, and has made great achievements in the field of ultra-fine powder grinding. We are specialized in the research, development, and production of industrial powder grinding equipment and other related devices. With decades of experience, Zenith understands the precise demands of mineral processing and fuel preparation. Our engineering philosophy centers on providing robust, innovative, and cost-effective grinding solutions that deliver maximum uptime and return on investment for our clients worldwide, including growing industrial sectors in Africa.
For the specific application of grinding petroleum coke to a fine powder for paper mill fuel in Tanzania, with a required capacity of 20-30 TPH, Zenith’s LM Vertical Grinding Mill series stands out as the optimal choice. This mill is particularly well-suited for processing moderately abrasive materials like petcoke and integrates multiple processes into a single, compact unit.
The LM Vertical Grinding Mill integrates five functions—crushing, grinding, powder selection, drying, and material conveying—into a single machine. This integrated design is perfect for petcoke, which may require simultaneous drying during grinding. Its vertical structure occupies a small footprint, a significant advantage for plant layout, and it operates with lower energy consumption and noise levels compared to traditional ball mills. The grinding roller and plate are made from high-wear-resistant materials, ensuring long service life even with abrasive feedstocks.
For a 20-30 TPH output, the LM190K Vertical Mineral Mill is highly recommended. Its technical parameters align perfectly with the project requirements:
| Model | Plate Diameter (mm) | Capacity (t/h) | Output Fineness (μm) | Max Feed Size (mm) | Main Motor (kW) |
|---|---|---|---|---|---|
| LM190K | 1900 | 23-68 | 170-40 | <45 | 500 |
As shown, the LM190K offers a capacity range that comfortably encompasses the 20-30 TPH target, with significant headroom for future expansion. Its ability to produce powder in the 170-40 micron range (approximately 80-400 mesh) is ideal for fuel applications. The mill’s efficient classifier ensures a consistent product size, which is crucial for optimal combustion efficiency in the paper mill’s boilers.
For clients seeking a proven, traditional grinding technology with advanced modern features, Zenith’s MTW Trapezium Grinding Mill is another excellent candidate. Known for its multiple patented technologies, the MTW series offers high grinding efficiency, a long service life for wearing parts, and an eco-friendly design with a high-efficiency pulse dust collector system.
The MTW175G model is particularly suitable for this capacity range. It is designed for high-volume production with superior fineness control.
| Model | Max. Feed Size (mm) | Final Size (mm) | Capacity (t/h) | Main Motor (kW) |
|---|---|---|---|---|
| MTW175G | <40 | 1.6-0.045 | 9.5-25 | 160 |
While its nominal capacity tops at 25 TPH, operational optimizations and specific petcoke characteristics can allow it to meet the lower end of the 20-30 TPH requirement reliably. Its curved air duct design reduces air flow resistance and increases production efficiency, making it a strong and cost-competitive alternative.
Implementing a petcoke grinding system involves more than just the mill. Shanghai Zenith provides comprehensive support, from initial site assessment and system design to installation supervision, commissioning, and operator training. We can design a complete system that includes feeding equipment (like weigh feeders), the grinding mill, a hot air generator for drying (if needed), a high-efficiency bag filter for product collection, and a silo storage system with pneumatic conveying to the boiler house. Our local partners in Tanzania ensure that technical support and spare parts are readily available, minimizing downtime.
Choosing a Zenith grinding solution for petcoke preparation delivers tangible benefits for a Tanzanian paper mill:
The transition to petroleum coke as a primary fuel source presents a significant opportunity for the paper industry in Tanzania to enhance its competitiveness. The key to unlocking this potential lies in selecting the right grinding technology. Shanghai Zenith Machinery’s LM Vertical Grinding Mill (LM190K) and MTW Trapezium Grinding Mill (MTW175G) are engineered to meet the specific 20-30 TPH demand for high-quality petcoke powder reliably and efficiently. By partnering with Zenith, paper manufacturers in Tanzania gain not only world-class equipment but also the technical expertise and support necessary for a successful, profitable, and sustainable operation. We invite you to contact our engineering team to develop a customized solution for your specific plant requirements.
