In the paint industry, the choice of filler materials plays a crucial role in determining the quality, smoothness, and durability of the final coating. Feldspar, being a naturally occurring aluminosilicate mineral, is widely used as a filler due to its chemical inertness, high brightness, and excellent dispersion properties. For paint filler applications, feldspar is typically ground into fine powder around 150 mesh to ensure optimal performance in formulation. In Indonesia, the increasing demand for high-grade fillers drives the need for efficient and reliable feldspar grinding mills.
Shanghai Zenith Machinery Co., Ltd., an eminent Chinese manufacturer of industrial grinding equipment, has been at the forefront of the ultra-fine powder grinding field. The company’s expertise in research, development, and production ensures a stable supply of advanced grinding solutions suitable for various minerals including feldspar.

Feldspar is not only abundant in nature but also exhibits physical and chemical properties that make it particularly suitable as a paint filler. The fine grinding of feldspar to 150 mesh enhances its effectiveness as a filler by improving its surface area, uniformity, and compatibility with other components in paint formulations.
When properly ground, feldspar contributes to improved hardness, better resistance to scratching, and enhanced durability of paint films. Its low oil absorption helps maintain the paint’s viscosity, while its chemical stability prevents color fading or degradation when exposed to atmospheric conditions.
In Indonesia, the paint industry is growing at a robust pace, supported by the rapid expansion of the construction and automotive sectors. This has amplified the demand for high-quality filler materials like feldspar powder. To meet these growing demands, the adoption of advanced grinding mills has become essential.
Grinding feldspar efficiently to 150 mesh requires a specially designed mill that can handle the hardness, abrasiveness, and fine particle demands of the mineral. Traditional mills often fall short in producing uniform powder, leading to uneven quality in paint formulations.
Modern feldspar grinding mills integrate crushing, grinding, and classification functions, offering efficient powder processing with precise particle size control. The technology not only improves throughput but also reduces energy consumption and maintenance costs.
Three major aspects should be considered in the grinding process:

Shanghai Zenith Machinery Co., Ltd. offers a range of mills that are ideal for feldspar grinding. Among them, the MTW Trapezium Grinding Mill and XZM Ultrafine Grinding Mill are two excellent choices for producing high-quality 150 mesh feldspar powder used in paint filler applications.
The MTW series mill is designed with advanced European technology and is particularly suited for medium-fine powder applications. It features a bevel gear drive system, thin oil lubrication, curve air ducts, and excellent material segmentation for low energy consumption and high output.
| 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’s ability to produce consistent fine powder makes it highly suitable for feldspar grinding in Indonesia’s paint industry. It ensures excellent particle size distribution and a perfectly uniform 150 mesh output.

For producers who require finer control and the flexibility to produce a range of particle sizes, the XZM Ultrafine Grinding Mill is another strong choice. It can produce powders with fineness between 325 to 2500 mesh, allowing precise tuning for 150 mesh production. Its design includes a multi-head classifier that enables highly efficient and repeatable grinding performance.
| Model | Working Diameter (mm) | Final Size (mesh) | Output (kg/h) | Main Motor Power (kW) |
|---|---|---|---|---|
| XZM221 | Φ800 | 325–2500 | 500–4500 | 75 |
| XZM268 | Φ1680 | 325–2500 | 5000–25000 | 315 |
One of the major advantages of the XZM Ultrafine Mill is its ability to maintain a controlled temperature during grinding, preventing any changes to feldspar’s chemical properties. This ensures stable color and high whiteness, which are crucial in paint filler applications.
Indonesia’s feldspar supply varies in mineral composition and moisture content depending on regional deposits. Zenith’s mills are adaptable, allowing local producers to handle variable feed material efficiently. Key advantages include:
In Indonesia, field applications of feldspar grinding mills extend beyond paint fillers into ceramics, glass production, and chemical industries. However, the paint market remains one of the fastest-growing domains. Increasing construction projects, infrastructural investments, and automotive refinishing demand have collectively boosted the consumption of high-grade fillers.
Zenith’s technical service network in Asia-Pacific, including Indonesia, provides comprehensive on-site installation guidance, operational training, and maintenance support. This ensures that customers achieve maximum productivity and consistent product quality.
The application of feldspar as a 150 mesh filler in paint formulation requires a fine balance between quality, efficiency, and consistency. Shanghai Zenith Machinery Co., Ltd. offers reliable solutions through its MTW Trapezium Grinding Mill and XZM Ultrafine Grinding Mill, which are ideally suited for the Indonesian market. Both mills deliver optimal performance, energy efficiency, and ease of operation, enabling producers to achieve superior paint filler quality with sustainable production practices.
By adopting Zenith’s state-of-the-art feldspar grinding technologies, Indonesian manufacturers can elevate their paint products to meet international quality standards and reduce overall production costs. With continuous innovations and customer-oriented services, Zenith stands as a trusted partner for the global minerals and coatings industries.