The pet care industry in Namibia is experiencing significant growth, with cat litter being a key product segment. Traditional clay-based litters are increasingly being supplemented or replaced by more absorbent, odor-controlling, and environmentally friendly alternatives. Petroleum coke, a carbon-rich byproduct of oil refining, has emerged as an excellent raw material for premium cat litter due to its high porosity, superior moisture absorption, and natural deodorizing properties. However, transforming raw petroleum coke into a soft, clumping, and dust-free litter requires ultra-fine grinding to a consistent fineness, typically around 600 mesh (approximately 23 microns). This article explores the technical challenges of this process and presents optimal milling solutions.
Petroleum coke is a challenging material to grind to ultra-fine levels. Its inherent hardness and variable moisture content can lead to high energy consumption, excessive wear on grinding components, and inconsistent particle size distribution. For cat litter application, achieving a uniform 600-mesh fineness is critical for several reasons:
Therefore, selecting the right grinding mill is not just about achieving fineness; it’s about doing so efficiently, reliably, and with control over the final product’s characteristics.

Several grinding technologies can be applied to petroleum coke processing. While traditional Raymond Mills or Ball Mills can handle preliminary size reduction, they often fall short in energy efficiency and achieving consistent ultra-fine powder below 325 mesh. For a target of 600 mesh, advanced milling systems that integrate grinding, classification, and drying are essential.
Vertical roller mills have become a preferred choice for many mineral processing applications due to their integrated design. However, for the most demanding ultra-fine applications, specialized ultrafine vertical mills and grinding mills offer superior performance. These systems utilize multiple grinding rollers and highly efficient static or dynamic classifiers to precisely control particle size and shape, which is paramount for high-value products like specialty cat litter.
For the specific requirement of producing 600-mesh petroleum coke powder for cat litter in Namibia, Shanghai Zenith Machinery Co., Ltd., an excellent manufacturer with great achievements in ultra-fine powder grinding, offers an ideal solution. Among their comprehensive product line, the LUM Ultrafine Vertical Mill stands out for this application.
The LUM series integrates grinding, drying, classifying, and powder conveying into one compact unit. Its unique roller and grinding path design ensures efficient particle bed grinding with low energy consumption and minimal wear. Most importantly, its advanced classification system can precisely select particles to achieve a stable 600-mesh (D97 ≈ 23μm) output, which is exactly what is needed for premium cat litter.
| Model | Main Machine Power (kW) | Capacity (t/h)* | Size Distribution D97 (μm) |
|---|---|---|---|
| LUM1525 | 220-250 | 1.6 – 11.5 | 5 – 30 |
| LUM1632 | 280-315 | 2.0 – 13.5 | 5 – 30 |
| LUM1836 | 355-400 | 2.3 – 15.0 | 5 – 30 |
*Capacity varies based on material hardness and required fineness. For petroleum coke to 600 mesh, a capacity within the lower to middle range is typical.
For projects with slightly different capacity requirements or where a different technological approach is preferred, Zenith’s XZM Ultrafine Grinding Mill is another formidable option. The XZM series is specifically designed for superfine powder production (325-2500 mesh) and is renowned for its reliability and excellent particle size distribution control.

Selecting Shanghai Zenith’s grinding equipment for a petroleum coke cat litter plant in Namibia offers distinct advantages:
The success of a petroleum coke-based cat litter venture in Namibia hinges on the ability to consistently produce a high-quality, ultra-fine powder. Investing in the right grinding technology is an investment in product quality, operational efficiency, and market competitiveness. Shanghai Zenith Machinery’s LUM Ultrafine Vertical Mill, with its targeted capability to produce 600-mesh powder efficiently and reliably, presents a technically superior solution. By partnering with a specialized manufacturer like Zenith, producers can ensure their plant is equipped to meet the exacting standards of the modern pet care industry, turning a refining byproduct into a valued consumer product.
