Thailand has long been one of the leading agricultural producers in Southeast Asia, with a robust livestock industry that depends heavily on high-quality animal feed additives. Among these additives, limestone powder is one of the most essential components because of its high calcium content, which is crucial for improving the nutritional value and productivity of animal feed. To meet the increasing demand for high-purity limestone powder in the Thai market, efficient and environmentally friendly grinding equipment is required. This is where the advanced grinding technology of Shanghai Zenith Machinery Co., Ltd. plays a vital role.
Shanghai Zenith Machinery Co., Ltd. is a professional manufacturer specializing in the research, development, and production of industrial powder grinding equipment and related devices. With years of expertise and technical innovation, the company provides complete solutions for limestone grinding in animal feed production, offering consistent particle size distribution and excellent energy efficiency.
Limestone, primarily composed of calcium carbonate (CaCO3), is widely used as a mineral additive in animal feed. In the livestock nutrition industry, proper calcium levels are critical for bone development, eggshell formation (in poultry), and overall metabolic health. Grinding limestone to a finer particle size ensures increased bioavailability and assimilability for animals, improving the feed’s efficiency.
To meet the 10-20 tons per hour (TPH) production requirement found in typical Thai feed mills, the grinding plant must deliver high throughput, stable performance, and consistent fineness. Additionally, the equipment should be durable and easy to maintain under Thailand’s humid, tropical conditions.
The process of converting raw limestone into finely ground powder for feed additives generally includes the following steps:
This systematic process ensures that the final feed additive meets both nutritional and physical requirements, reducing dust emissions and maintaining a cleaner working environment.
Among the wide range of grinding mills developed by Shanghai Zenith Machinery Co., Ltd., two machines stand out for this application: the MTW Trapezium Grinding Mill and the LM Vertical Grinding Mill. Both are designed for stable performance, easy maintenance, and eco-friendly production, making them ideal choices for limestone processing in animal feed production.
The MTW Trapezium Grinding Mill is designed with multiple patents and unique technology for maximum efficiency and reliability. It offers an optimized grinding path and an integrated design of powder selection and fan, achieving excellent energy savings. For limestone grinding applications in Thailand, the MTW138Z and MTW175G models can easily meet 10-20 TPH production capacities.
| Model | Max. Feed Size (mm) | Final size (mm) | Capacity (t/h) | Main motor (kW) | Fan motor (kW) |
|---|---|---|---|---|---|
| MTW138Z | <35 | 1.6–0.045 | 6–17 | 90 | 110 |
| MTW175G | <40 | 1.6–0.045 | 9.5–25 | 160 | 200 |
The MTW Mill ensures high precision in powder size control, reduced vibration, and quieter operation compared to traditional mills such as Raymond Mills. Furthermore, its efficient dust collector system adheres to strict environmental standards, making it a sustainable choice for industrial feed additive processing in Thailand.

Alternatively, the LM Vertical Grinding Mill from Shanghai Zenith offers an integrated solution combining grinding, drying, and material handling in one compact system. With its vertical design and automatic control system, the LM series ensures stable particle size distribution and excellent energy efficiency — features critical for producing high-quality feed-grade limestone powder.
| Model | Plate Diameter (mm) | Capacity (t/h) | Output Fineness (μm) | Max Feed Size (mm) | Main Motor (kW) |
|---|---|---|---|---|---|
| LM130K | 1300 | 10–28 | 170–40 | <38 | 200 |
| LM190K | 1900 | 23–68 | 170–40 | <45 | 500 |
The LM Vertical Grinding Mill’s multi-functionality allows it to operate under various moisture content conditions, making it especially suitable for Thailand’s humid environment. Additionally, its low operating vibration enhances durability and ensures consistent, high-quality output size — crucial for feed-grade material blending.

For a limestone grinding system with a capacity of 10-20 TPH, the choice between MTW and LM series depends on specific operational priorities. If your focus is on versatility and lower initial investment, the MTW Trapezium Grinding Mill is ideal. However, if energy efficiency and integration of drying and classifying functions are the main goals, then the LM Vertical Grinding Mill provides superior performance.
Both machines are equipped with advanced control systems, durable wear parts, and low maintenance costs, ensuring the plant can operate continuously and reliably, which is vital for feed additive production lines that often run 24/7.

In summary, the MTW Trapezium Grinding Mill and the LM Vertical Grinding Mill by Shanghai Zenith Machinery Co., Ltd. represent state-of-the-art solutions for limestone grinding in Thailand’s animal feed additive industry. Designed for high productivity (10–20 TPH), precision, and long-term operational stability, these machines deliver superior performance while minimizing environmental impact.
With its proven expertise in ultra-fine powder grinding and decades of engineering excellence, Shanghai Zenith Machinery Co., Ltd. continues to help Thailand’s feed additive producers achieve sustainable, efficient, and profitable operations through advanced grinding technologies.
For more information or tailored project design, feel free to contact Shanghai Zenith’s engineering team for customized solutions to your grinding and processing requirements.