The Indian construction and industrial coating sector is experiencing robust growth, driven by infrastructure development and a booming manufacturing base. A key raw material in this expansion is basalt powder, prized for its durability, chemical inertness, and excellent filler properties in protective and decorative coatings. Producing high-quality basalt powder with consistent fineness between 200 to 800 mesh for coating applications demands reliable, high-capacity grinding technology. Achieving a target output of 20-30 tons per hour (TPH) presents a significant technical challenge, requiring mills that combine high throughput with precise particle size control and energy efficiency. This article explores the optimal grinding solutions for this specific application, focusing on the technological advancements that make such production goals attainable.
Grinding basalt to coating-grade fineness at an industrial scale of 20-30 TPH is not a trivial task. Basalt is a hard, abrasive volcanic rock with a Mohs hardness typically ranging from 5 to 7. This inherent hardness leads to rapid wear on grinding components, increasing maintenance costs and potential contamination. Furthermore, the coating industry requires a very narrow particle size distribution (PSD). An inconsistent PSD can adversely affect the coating’s viscosity, gloss, weather resistance, and overall performance. Therefore, the ideal grinding system must offer:
Shanghai Zenith Machinery Co., Ltd., a leading manufacturer of industrial grinding equipment, offers several advanced mill series perfectly suited to meet the demands of high-capacity basalt powder production for coatings. For the specific requirement of 20-30 TPH, two models stand out as particularly recommendable due to their design philosophy, capacity range, and fineness control.
The LM Vertical Grinding Mill is a premier choice for large-scale mineral processing. Its design integrates five functions—crushing, grinding, powder selection, drying, and conveying—into a single, compact unit. This integration reduces the footprint of the entire grinding plant and simplifies the process flow. For basalt grinding, its grinding roller and table are made from high-chromium alloy or other wear-resistant materials, significantly extending service life against abrasive materials. The built-in high-efficiency classifier allows for instant separation of fine powder, preventing over-grinding and ensuring a sharp particle cut. For a 20-30 TPH basalt coating powder line, the LM190K model is an excellent match.
| Model | Plate Diameter (mm) | Capacity (t/h) | Output Fineness (μm) | Max Feed Size (mm) | Main Motor (kW) |
|---|---|---|---|---|---|
| LM190K | 1900 | 23-68 | 170-40 (~80-400 mesh) | <45 | 500 |
As shown in the table, the LM190K’s capacity comfortably encompasses the 20-30 TPH target, with ample headroom for future expansion. Its ability to produce powder in the 40-170μm (approximately 80-400 mesh) range makes it ideal for many filler-grade coating applications.
For operations seeking a slightly different approach with exceptional grinding efficiency and lower initial investment, the MTW Trapezium Grinding Mill is a top contender. This mill features a curved shovel blade that increases material feeding efficiency and a multiple-sealed gearbox for smoother operation. Its bevel gear overall drive and internal thin oil lubrication system are key innovations that enhance transmission efficiency and reduce maintenance frequency. The MTW series is renowned for its environmental friendliness, with a pulse dust collector ensuring clean operation—a critical factor for coating powder production. For the 20-30 TPH range, the MTW215G model is the most suitable.
| Model | Max. Feed Size (mm) | Final Size (mm) | Capacity (t/h) | Main Motor (kW) | Fan Motor (kW) |
|---|---|---|---|---|---|
| MTW215G | <50 | 1.6-0.045 (~10-325 mesh) | 15-45 | 280 | 315 |
The MTW215G’s capacity range of 15-45 TPH perfectly brackets the project requirement. Its ability to grind down to 0.045mm (approx. 325 mesh) provides the flexibility to produce finer grades of basalt powder if needed for specialized coatings.
A complete 20-30 TPH basalt grinding line for coating production involves more than just the main mill. A typical configuration powered by a Zenith LM or MTW mill would include:
Shanghai Zenith provides not only the core equipment but also EPCO (Engineering, Procurement, Construction, and Operation) services, offering a complete, turnkey solution tailored to the site conditions and specific product requirements of Indian clients.
Establishing a reliable, high-output basalt grinding line for the coating industry in India requires partnering with an equipment supplier that possesses deep technical expertise and proven technology. Shanghai Zenith Machinery’s LM Vertical Grinding Mill (LM190K) and MTW Trapezium Grinding Mill (MTW215G) represent two of the most capable and efficient solutions on the market to achieve the 20-30 TPH production target. Their robust construction, advanced classification systems, and energy-saving designs directly address the core challenges of grinding hard, abrasive basalt into high-value coating filler. By choosing Zenith’s technology, Indian producers can secure a competitive edge through superior product quality, lower operating costs, and a stable, high-capacity production foundation for years to come.
