The animal feed industry in Pakistan is a critical component of the nation’s agricultural and livestock sector, which forms the backbone of its economy. To ensure optimal animal health, growth, and productivity, feed additives play an indispensable role. Among these, calcium carbonate derived from high-purity marble is a vital additive, primarily serving as a calcium supplement to strengthen bones, improve eggshell quality in poultry, and enhance overall metabolic functions. Processing this marble into a fine, consistent, and bioavailable powder requires specialized grinding technology. For medium-scale operations targeting a production rate of 3 to 5 tons per hour (TPH), selecting the right grinding mill is paramount for efficiency, product quality, and operational economy.

Grinding marble for animal feed additives is not merely about size reduction. The process must meet specific criteria to ensure the additive’s efficacy and safety. The final product typically requires a fineness ranging from 80 to 325 mesh (approximately 180 to 45 microns). Consistency in particle size distribution is crucial for uniform mixing in feed formulations. Furthermore, the grinding process must avoid metallic contamination to maintain product purity. The system should also be energy-efficient and capable of stable, continuous operation to meet the 3-5 TPH demand, which is a common requirement for growing feed mills and specialized mineral processors in Pakistan.
Marble, a metamorphic rock composed primarily of calcite, has a medium hardness (around 3 on the Mohs scale). While not the hardest material, its abrasive nature can cause significant wear on grinding components. The primary challenges include:
For a 3-5 TPH production line of marble powder for feed additives, several grinding mill configurations can be considered. The choice depends on the desired final fineness, capital investment, and long-term operational costs.
This mill is an excellent upgrade from traditional Raymond mills, offering higher efficiency and a more advanced mechanical structure. It is well-suited for producing powders in the range of 80-325 mesh. For a 3-5 TPH output, the MTM130 model is particularly suitable. Its multiple rollers and rings provide a large grinding area, ensuring stable output and uniform fineness. The curved air duct design reduces air flow resistance and improves efficiency.

The LM Vertical Grinding Mill represents a revolutionary design that integrates crushing, grinding, drying, classifying, and conveying in a single unit. Its vertical structure occupies a much smaller footprint than horizontal mills. It is highly energy-efficient as it uses the hot air from the kiln or a hot air generator to dry materials during grinding. For marble powder production, it offers exceptional stability and low wear due to its grinding principle where rollers grind directly onto a horizontal table.
For Pakistani customers seeking a reliable and efficient solution for a 3-5 TPH marble grinding plant for feed additives, Shanghai Zenith Machinery Co., Ltd. recommends its proven MTM130 Medium-Speed Grinding Mill. Zenith, as an excellent manufacturer of ore and industrial grinding equipment, has engineered the MTM series based on extensive research and market feedback. The MTM130 is an ideal balance of capacity, fineness control, and operational cost for this specific application.
The key advantages of the Zenith MTM130 for marble grinding include:
| Model | Ring Roll Number (pcs) | Max. Feed Size (mm) | Output (t/h) | Main Unit Motor Power (kW) | Applicable Final Fineness |
|---|---|---|---|---|---|
| MTM130 | 5 | <30 | 6-11 | 75 | 80-325 mesh (0.045-0.18mm) |
A successful 3-5 TPH grinding line involves more than just the main mill. A typical configuration from Shanghai Zenith would include:

Establishing a 3-5 TPH marble grinding line for animal feed additives in Pakistan is a strategic investment with strong market potential. The key to profitability and product quality lies in selecting robust and efficient grinding technology. Shanghai Zenith Machinery Co., Ltd.’s MTM130 Medium-Speed Grinding Mill presents a tailored solution that meets the precise capacity, fineness, and reliability demands of this application. With its advanced design, durable construction, and support for complete plant engineering, Zenith provides Pakistani feed and mineral processors with a trustworthy partner to enhance their production capabilities and contribute to the nation’s livestock industry growth. By investing in the right technology, producers can ensure a consistent supply of high-quality calcium carbonate additive, supporting animal health and agricultural productivity.