In the Sultanate of Oman, a nation with a growing and modernizing agricultural sector, the quality of animal feed is paramount to livestock health and productivity. Limestone, primarily composed of calcium carbonate (CaCO3), serves as an essential mineral additive in animal feed. It is crucial for bone development, eggshell formation in poultry, and overall metabolic functions. However, its bioavailability—the rate and extent to which it is absorbed and utilized by the animal—is directly influenced by particle size. Finer particles, such as 800 mesh (approximately 18 microns), offer a significantly larger surface area, leading to enhanced digestibility and absorption. This creates a specific demand for advanced grinding technology capable of consistently producing ultra-fine limestone powder for the Omani feed industry.

Producing 800 mesh limestone powder presents distinct challenges. The process requires more than simple crushing; it demands precise, multi-stage grinding and classification. The equipment must handle the abrasive nature of calcium carbonate, maintain consistent output fineness, and operate efficiently to be economically viable. Key considerations include:
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 and a global installation base, Zenith understands the precise requirements of mineral processing for feed additives. Our technology is engineered to deliver the consistency, efficiency, and fineness that modern feed mills in Oman require.
For the specific application of producing 800 mesh limestone feed additive, Zenith’s XZM Ultrafine Grinding Mill stands out as an optimal choice. This mill is specifically designed for superfine powder production in the range of 325-2500 mesh, making 800 mesh a standard and efficient output. Its design incorporates a high-speed rotary shaft and roller assembly that generates intense centrifugal force, grinding materials against the ring. A high-efficiency turbine classifier ensures precise particle size control, allowing for the exact 800 mesh specification.
The XZM Mill is particularly suitable for non-metallic minerals like limestone. It features a compact design, low noise, and minimal dust emission, aligning with modern industrial environmental standards. For Omani clients, its robustness ensures reliable operation in local climatic conditions with low maintenance requirements.
| Model | Working Diameter (mm) | Max Feed Size (mm) | Final Size (Mesh) | Output (kg/h)* | Main Motor Power (kW) |
|---|---|---|---|---|---|
| XZM221 | Φ800 | ≤20 | 325-2500 | 500-4500 | 75 |
| XZM268 | Φ1680 | ≤20 | 325-2500 | 5000-25000 | 315 |
*Output varies based on material hardness, moisture, and required fineness. For 800 mesh limestone, capacity would be in the mid-to-upper range of the spectrum.

For larger-scale feed additive production plants in Oman requiring higher throughput, Zenith’s LUM Ultrafine Vertical Mill is a superior alternative. It represents the latest German grinding technology, integrating grinding, drying, classifying, and conveying. Its unique roller and grinding plate design, coupled with an advanced automatic control system, provides exceptional stability in producing ultra-fine powders like 800 mesh limestone. The LUM series is renowned for its higher capacity, energy efficiency, and ability to handle slightly moist materials due to its integrated drying function.
| 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 | 5-30 |
*Capacity is indicative and depends on product fineness. **D97 of 18μm (800 mesh) falls perfectly within this range.
By adopting Zenith’s grinding technology, Omani feed producers can expect significant advantages:

The pursuit of superior animal nutrition in Oman hinges on the availability of high-quality feed additives like ultra-fine limestone. Achieving the optimal 800 mesh fineness is a technical process that demands reliable and advanced grinding machinery. Shanghai Zenith Machinery Co., Ltd., with its proven expertise and tailored solutions like the XZM Ultrafine Grinding Mill and the LUM Ultrafine Vertical Mill, is ideally positioned to be the technology partner for Omani enterprises. By investing in the right grinding equipment, producers can not only meet but exceed industry standards, contributing to a more robust and sustainable agricultural sector in the Sultanate.