Diatomite, also known as diatomaceous earth, is a naturally occurring siliceous sedimentary rock composed of the skeletal remains of microscopic aquatic organisms known as diatoms. Owing to its high porosity, low density, and high silica content, diatomite is widely used as a filtration aid, filler, abrasive, and as a flux material in metallurgical processes. In the United States, diatomite has become an essential raw material for refining and metallurgical industries where achieving fine, uniform particle sizes—such as 200 mesh—is of great importance to ensure efficient reactions and product purity.
To obtain high-quality diatomite powder suitable for metallurgy flux applications, a reliable and efficient grinding system is required. Shanghai Zenith Machinery Co., Ltd. is a world-class manufacturer of ore grinding equipment specializing in the research, development, and manufacturing of industrial grinding mills. With an extensive track record in ultra-fine powder processing, Zenith’s range of products serves global industries with excellent performance and long-term stability.
In metallurgical processes, fluxes are materials added to ores to promote and enhance the removal of impurities during smelting. When used as a flux, diatomite’s unique properties make it a valuable auxiliary material. Its high silica content enables it to combine with metallic oxides, producing low-melting-point slags that can be easily separated from molten metals. Furthermore, the thermal stability and chemical reactivity of finely ground diatomite ensure cleaner metal output, especially in steel and nonferrous metal production.
To achieve this performance, the diatomite must be processed into uniform fine powder typically around 200 mesh. At this particle size, the surface area is optimized for chemical interaction while maintaining good flowability in furnace systems.
Diatomite, though soft and porous, presents specific challenges during grinding due to its lightweight structure and high silica content. A suitable diatomite grinding mill should meet the following requirements:
Shanghai Zenith Machinery’s advanced grinding technologies fulfill these demands perfectly. Among their portfolio, the MTW Trapezium Grinding Mill and XZM Ultrafine Grinding Mill stand out as ideal choices for producing 200-mesh diatomite suitable for metallurgical flux in industrial applications across the United States.
The MTW Trapezium Grinding Mill from Shanghai Zenith features innovative design, European-style technology, and robust structure. It is ideal for processing non-flammable, non-explosive materials like diatomite with Mohs hardness below 9.3. The grinder ensures uniform particle output within the 200 mesh range, which is perfect for metallurgical and ceramic flux applications.
Its trapezoidal working surface, efficient powder separator, and advanced air circulation system collectively guarantee high efficiency and energy savings compared with traditional mills such as the Raymond Mill. The integrated design also minimizes dust emissions, aligning well with U.S. environmental standards.

| 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 |
| MTW215G | <50 | 1.6–0.045 | 15–45 | 280 | 315 |
When used for diatomite, the MTW series achieves stable output in the range of 180–200 mesh, offering a fine and consistent product suitable for flux applications. Its modular structure simplifies maintenance and minimizes operational downtime, making it highly suitable for U.S.-based metallurgical enterprises seeking reliability and productivity.
For applications requiring ultra-fine diatomite powder, the XZM Ultrafine Grinding Mill is an excellent choice. It is designed to handle materials requiring final particle sizes from 325 to 2500 mesh, delivering superior uniformity and energy efficiency. Its optimized structure includes multi-head powder separators and evenly distributed air flow, ensuring that the final powder meets strict metallurgical particle size specifications.
The XZM milling technology significantly reduces energy consumption compared to jet mills while improving fineness control. For metallurgical flux requirements, it can consistently produce fine diatomite powders of 200 mesh with a narrow particle size distribution—ideal for flux performance optimization.

| 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 |
As a leading grinding solution, the XZM series provides not only high precision but also flexibility in operation. It is suitable for both small-scale and large-scale industrial settings in the United States, delivering consistent product quality essential for metallurgical flux preparation.
For U.S.-based metallurgical flux producers, Shanghai Zenith can offer turnkey grinding system solutions. A typical diatomite grinding line for metallurgy flux at 200 mesh would include the following equipment configuration:

Shanghai Zenith Machinery Co., Ltd. ensures its grinding solutions provide top-tier results for the American metallurgical market. The following advantages set Zenith apart:
With the increasing demand for purity and performance in metallurgical processes, the role of high-quality flux materials like diatomite continues to grow. To produce consistent 200-mesh diatomite powder for U.S.-based flux applications, efficient grinding equipment is essential. Shanghai Zenith Machinery Co., Ltd. provides a comprehensive solution through its advanced MTW Trapezium Grinding Mill and XZM Ultrafine Grinding Mill, both engineered for precision, sustainability, and high productivity.
Whether for steel smelting or nonferrous metallurgical refining, Zenith’s grinding mills deliver outstanding results, contributing to cleaner and more efficient metal production. Backed by world-class engineering expertise and a commitment to quality, Shanghai Zenith Machinery Co., Ltd. stands as a trusted partner for industrial powder processing in the United States and beyond.