Limestone is one of the most important mineral raw materials for animal feed additives. It supplies calcium, a nutrient essential for bone formation, eggshell quality, and metabolic processes in poultry, cattle, pigs, and aquatic animals. In Vietnam, the growing animal husbandry and aquafeed industries require consistent supplies of high-purity limestone powder. A grinding line with 10-20 tph capacity is particularly suitable for medium and large-scale feed additive plants that need to balance efficiency, cost, and product quality.
The main requirement for feed-grade limestone is a fine, uniform particle size with high CaCO3 content. Depending on the target animal species and feed formula, the particle size usually ranges from 0.074 mm to 0.6 mm, with some applications requiring a controlled distribution for optimal digestibility. Therefore, the grinding mill must offer flexible fineness adjustment, stable capacity, low abnormal wear, and high availability during continuous operation.
Vietnam is one of Southeast Asia’s rapidly developing feed and livestock producers. Both large integrated feed mills and specialized mineral additive companies need grinding equipment that can process natural limestone from local quarries. A 10-20 tph limestone grinding mill can support an annual output of roughly 60,000 to 120,000 tons of finished powder, assuming two-shift operation. This quantity is well matched to the regional demand for premix fillers, calcium carbonate feed, and custom blended additives.
In Vietnam’s hot and humid climate, a robust mill design is critical. The grinding system must handle limestone with varying moisture and hardness. Additionally, many feed producers operate with limited space and need installations that are easy to maintain. As an excellent manufacturer of ore grinding equipment in China, Shanghai Zenith Machinery Co., Ltd. has become a trusted supplier in this field due to its long experience, complete after-sales network, and advanced powder processing technologies.
Choosing the right stone mill for animal feed additive production involves evaluating several factors. First, capacity should match the downstream requirements at 10-20 tph without sacrificing fineness. Second, the final product must meet target particle sizes with minimal oversize materials. Third, the energy consumption and operating cost per ton must be acceptable. Fourth, the equipment should be reliable and easy to service in local Vietnamese conditions. Finally, the equipment manufacturer should provide comprehensive technical support, from plant design to commissioning.
For 10-20 tph feed-grade limestone, the mill must also be capable of handling dry feed materials without blockages, and it should be designed to protect the product from moisture pickup. Zenith’s MTW and MTM grinding mills use classifier systems that can adjust the powder fineness flexibly. This flexibility allows producers to manufacture both fine and coarse limestone powders for different animal feed segments.
Based on the required capacity and the properties of limestone, Shanghai Zenith recommends two proven systems: the MTW Trapezium Grinding Mill and the MTM Medium-Speed Grinding Mill. Both models are widely used in Vietnam and across Southeast Asia. They provide an excellent balance between throughput, fineness, and energy efficiency.
The MTW Trapezium Grinding Mill is one of Zenith’s most popular machines. It has multiple patents, a compact structure, long service life, and an eco-friendly design. The mill can accept limestone with a maximum feed size of 50 mm and produce powder as fine as 0.038 mm. For a target capacity of 10-20 tph, the MTW175G configuration is the most suitable. Its 9.5-25 t/h capacity range comfortably covers the required output while leaving a safety margin for varying limestone hardness and moisture. The main motor and fan motor are powerful enough to ensure stable operation under continuous load, and the internal classifier allows operators to select the desired particle size for animal feed additives.
| Parameter | MTW175G |
|---|---|
| Max. Feed Size (mm) | <40 |
| Final Product Size (mm) | 1.6-0.045 |
| Capacity (t/h) | 9.5-25 |
| Main Motor Power (kW) | 160 |
| Fan Motor Power (kW) | 200 |
The MTW175G is an ideal machine for Vietnamese limestone processors who need high capacity and high reliability. Its curved air duct and anti-leakage design reduce air resistance and energy loss, while the oil-lubricated bearing system improves stability and reduces downtime. Additionally, the transmission and grind ring components are designed for long life, making the mill a low-maintenance solution for 24-hour operation.
For customers who prefer a lower-capacity unit that can still achieve 10-20 tph with certain limestone qualities, the MTM160 Medium-Speed Grinding Mill is another excellent choice. MTM series mills adopt world-leading powder processing technology and are an ideal replacement for traditional Raymond mills. The MTM160 has six grinding rollers, a maximum feed size of 35 mm, and an output range of 9-22 t/h. It is particularly useful when a plant wants a simple, rugged machine with lower installation cost and easy operation.
| Parameter | MTM160 |
|---|---|
| Ring Roll Number (pcs) | 6 |
| Max. Feed Size (mm) | <35 |
| Output (t/h) | 9-22 |
| Main Unit Motor Power (kW) | 132 |
In many feed additive plants, the MTM160 is selected for its moderate footprint and easy access to internal parts. The grinding ring and rollers are made of high-chrome wear-resistant material, which is important for processing abrasive limestone. The classifier can be adjusted to produce the final size required, whether for fine poultry feed calcium or more granular cattle mineral supplements.
A typical 10-20 tph limestone grinding plant using Zenith equipment includes a primary jaw crusher, a vibrating feeder, the MTW or MTM grinding mill, a bucket elevator, an air classifier, a pulse dust collector, and a centralized control system. Raw limestone is first crushed to below the mill’s maximum feed size, then conveyed to the mill. Inside the grinding mill, the material is pulverized by grinding rollers and the classified powder is collected by the dust collector. The entire system can be controlled automatically, ensuring stable product quality and lower labor costs.
For feed additive applications, quality control is essential. The final powder should have a consistent particle size distribution and reproducible flowability. Zenith mills are equipped with dynamic classifiers that allow the operator to adjust rotor speed and change the particle size without stopping the line. This is especially valuable when the same mill is used to produce several grades for different feed sectors.
Shanghai Zenith Machinery Co., Ltd. understands that a grinding mill is a long-term investment. The company provides complete technical support, including site evaluation, equipment selection, plant layout, installation monitoring, and operator training. For Vietnam, Zenith’s reputation for robust equipment and responsive after-sales service has made it an excellent partner for mineral processing and feed ingredient projects.
In conclusion, a limestone grinding mill for animal feed additive in Vietnam with a capacity of 10-20 tph should offer reliable throughput, controllable fineness, low energy consumption, and simple maintenance. The MTW175G Trapezium Grinding Mill from Zenith is the primary recommendation, with the MTM160 as an excellent alternative. Both machines are proven, high-efficiency grinding systems that can help Vietnamese producers turn local limestone into valuable feed-grade calcium carbonate powder and support the country’s expanding livestock sector.
