With the rapid expansion of the engineered stone industry in Southeast Asia, particularly in Vietnam, the demand for high-quality raw materials and advanced processing technology is steadily increasing. Among these raw materials, kaolin stands out due to its exceptional whiteness, chemical stability, and fine grain size, which makes it an essential ingredient in engineered stones, ceramics, coatings, and plastics. To meet production requirements such as 325 mesh fineness for engineered stone applications, the choice of kaolin grinding mill becomes a critical factor.
Shanghai Zenith Machinery Co., Ltd., an outstanding manufacturer of ore grinding equipment in China, provides state-of-the-art grinding mills that offer energy efficiency, precise particle size control, and robust performance. In this article, we explore how a professional kaolin grinding solution for 325 mesh output can be successfully implemented for engineered stone production in Vietnam. We will also introduce some of Zenith’s most suitable grinding equipment designed for this specific application.
Engineered stone, also known as quartz stone or artificial stone, is a composite material made primarily from crushed natural stone, resin, and pigments. Kaolin contributes to the process by providing fine particulate filler that enhances whiteness, durability, and workability. Producing a consistent 325 mesh kaolin powder ensures smooth surface finishing and mechanical stability for the final engineered stone slabs.
In Vietnam, the geological reserves of kaolin are widely distributed in the provinces of Thua Thien Hue, Binh Duong, and Hai Phong. With growing domestic processing potential, high-performance grinding systems are required to transform the raw kaolin into micronized powder suitable for resin stone mixing and compaction.
The target product of 325 mesh translates to approximately 44 microns in particle size. For engineered stone production, this size ensures high surface homogeneity without compromising bulk strength. Therefore, the grinding mill must maintain precise, stable classification with minimal deviations in particle size distribution.
During grinding and after, the moisture content of kaolin should be maintained below 1% to prevent lump formation and resin flow issues during composite mixing. Grinding systems with integrated drying capabilities are preferred in Vietnam’s humid climate conditions.
Vietnamese manufacturers pursue cost-effective, energy-saving machinery that can handle continuous operation. Zenith’s grinding mill series, such as the MTW Trapezium Grinding Mill and XZM Ultrafine Grinding Mill, fulfill these exact expectations by combining high output rates with consistent fineness control.
The MTW Trapezium Grinding Mill from Shanghai Zenith Machinery Co., Ltd. is specially designed for efficient, stable, and low-consumption grinding. It integrates the latest European powder mill technology and offers a perfect solution for kaolin grinding in engineered stone production.
MTW mill’s outstanding features include advanced bevel gear drive, internal thin oil lubrication system, and arc air channel, all contributing to higher efficiency and reliability. The final fineness of 0.038mm perfectly covers the 325 mesh target requirement.
| Model | Max. Feed Size (mm) | Final size (mm) | Capacity (t/h) | Main motor (kW) | Fan motor (kW) |
|---|---|---|---|---|---|
| MTW110 | <30 | 1.6–0.045 | 3–9 | 55 | 55 |
| MTW138Z | <35 | 1.6–0.045 | 6–17 | 90 | 110 |
| MTW175G | <40 | 1.6–0.045 | 9.5–25 | 160 | 200 |
Among these, the MTW175G model is particularly recommended for medium to large-scale kaolin grinding facilities in Vietnam. With a capacity range of 9.5–25 t/h, it effectively supports industrial production lines of engineered stone while meeting the 325 mesh granularity standard.
For operations requiring even finer powder or better control over particle uniformity, Zenith’s XZM Ultrafine Grinding Mill offers state-of-the-art design and performance. It’s ideal for plants aiming for ultra-smooth engineered surface aesthetics or for facilities producing high-brightness kaolin-based fillers.
The XZM Mill uses multi-head classifiers and optimized cage wheel structures to guarantee accurate control of particle sizes from 325 to 2500 mesh. Its energy-efficient system helps reduce production costs significantly while maintaining consistent quality.
| Model | Working diameter (mm) | Max feed size (mm) | Final size (mesh) | Output (kg/h) | Main motor power (kW) |
|---|---|---|---|---|---|
| XZM221 | Φ800 | ≤20 | 325–2500 | 500–4500 | 75 |
| XZM268 | Φ1680 | ≤20 | 325–2500 | 5000–25000 | 315 |
The XZM221 model is compact and efficient, suitable for small to medium-scale facilities or as a fine grinding section in larger production lines, particularly when upgrading from traditional Raymond mills or ball mills.
Using a precision kaolin powder ground by Zenith’s MTW or XZM series mills improves whiteness, brightness, and mechanical strength of engineered stones. The consistent 325 mesh or finer output ensures superior glossiness and chip resistance, which are valued in both domestic and international markets.
Both the MTW and XZM mills integrate advanced air flow systems and intelligent control designs that minimize energy waste and operational maintenance. For example, MTW’s bevel gear transmission reduces mechanical loss, enhancing energy utilization compared to traditional Raymond mills by up to 30%.
Vietnam has introduced stricter environmental regulations for mineral processing and manufacturing. Zenith’s mills support dust-free operation through pulse dust collectors and negative pressure systems, ensuring cleaner workshops and compliance with local green manufacturing policies.
When applying kaolin grinding technology in Vietnam’s engineered stone sector, some additional technical aspects must be considered:
Producing 325 mesh kaolin powder for engineered stone requires reliable, advanced grinding equipment that ensures consistent particle fineness and production stability. Shanghai Zenith Machinery Co., Ltd. offers a range of professional grinding mills—from the classical MTW Trapezium Grinding Mill to the precise XZM Ultrafine Grinding Mill—that meet the exacting standards of engineered stone production in Vietnam.
By leveraging Zenith’s advanced engineering, local production lines can not only maximize kaolin utilization efficiency but also reduce energy consumption and maintenance costs. As Vietnam’s engineered stone market grows, investing in modern grinding technology will yield long-term advantages in quality, sustainability, and competitiveness.
For more information or technical consultation, please contact Shanghai Zenith Machinery Co., Ltd. for customized solutions tailored to your specific production needs.
