Egypt, as a rapidly industrializing nation in North Africa, faces significant environmental challenges, particularly in the realm of industrial emissions. The country’s expanding cement, fertilizer, and power generation sectors are major sources of sulfur dioxide (SO₂) emissions. To comply with increasingly stringent environmental regulations, Egyptian industries are adopting various desulfurization technologies, among which dry and semi-dry flue gas desulfurization (FGD) using diatomite as a sorbent or catalyst carrier has gained attention.
Diatomite, also known as diatomaceous earth, is a naturally occurring soft siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder. Its unique properties – high porosity, low density, large surface area, and chemical inertness – make it an excellent material for SO₂ adsorption. When ground to a specific fineness (typically 200–400 mesh or finer), diatomite can effectively capture sulfur compounds in flue gas streams, either as a direct sorbent or as a support for active desulfurization agents like lime or sodium bicarbonate.
For Egyptian operations, the requirement of a grinding mill with a capacity of 5–10 tons per hour (tph) is common for medium-scale desulfurization plants. This capacity range balances investment costs with daily processing needs. Selecting the right grinding equipment is critical: it must deliver consistent fineness, high throughput, low energy consumption, and robustness against the abrasive nature of diatomite. Shanghai Zenith Machinery Co., Ltd., with its extensive portfolio of grinding mills, offers tailored solutions that meet these exacting demands.
Before diving into specific mill recommendations, it is essential to understand the material characteristics and process requirements. Diatomite typically has a moisture content of up to 10% in its natural state and a Mohs hardness of 1–1.5, making it relatively soft but highly abrasive due to its silica content. The final product for desulfurization usually requires a particle size between 45 μm and 150 μm (325 mesh to 100 mesh). In some advanced applications, finer grades (down to 10–20 μm) are needed to maximize surface area for adsorption.
Key performance indicators for the grinding mill include:
Shanghai Zenith’s grinding mills are engineered to meet these challenges. Below we recommend two outstanding models that perfectly cover the 5–10 tph range: the MTW110Z Trapezium Grinding Mill and the MTM130 Medium-Speed Grinding Mill.
The MTW series, designed with multiple international patents, represents the pinnacle of Zenith’s pendulum mill technology. The MTW110Z model is particularly well-suited for diatomite grinding in the 5–10 tph range. Its compact structure, eco-friendly operation, and ability to produce a final product as fine as 0.038 mm make it an excellent choice for Egyptian desulfurization plants.
Why choose MTW110Z for diatomite?
The following table presents the key technical parameters of the MTW110Z:
| Parameter | Value |
|---|---|
| Model | MTW110Z |
| Max. Feed Size | <30 mm |
| Final Product Size | 1.6 – 0.045 mm (10 – 325 mesh) |
| Capacity | 3 – 10 t/h |
| Main Motor Power | 55 kW |
| Fan Motor Power | 55 kW |
| Number of Rollers | 3 |
| Weight (approx.) | 18 t |
With a capacity range of 3 to 10 t/h, the MTW110Z comfortably covers the lower end of the required 5–10 tph range. By adjusting the classifier speed and airflow, operators can fine-tune the output to achieve the exact diatomite fineness needed for optimal desulfurization performance. For a typical plant requiring 7 tph of diatomite powder at 200 mesh, this mill operates at a sweet spot of efficiency.
For applications where a slightly higher throughput or a different particle size distribution is desired, the MTM130 Medium-Speed Grinding Mill offers an equally compelling solution. The MTM series is recognized as an ideal upgrade for traditional Raymond mills, featuring an innovative multi-cylinder structure that improves capacity and reduces energy consumption.
Advantages of the MTM130 for diatomite desulfurization:
Below are the technical specifications of the MTM130:
| Parameter | Value |
|---|---|
| Model | MTM130 |
| Ring Roll Number | 5 pcs |
| Max. Feed Size | <30 mm |
| Output Capacity | 6 – 11 t/h |
| Main Unit Motor Power | 75 kW |
| Classifier Motor Power | 15 kW |
| Total Weight (approx.) | 28 t |
The MTM130’s capacity of 6–11 t/h aligns perfectly with the upper portion of the 5–10 tph band. For a desulfurization plant that aims for a nominal 8–9 tph production rate, this mill provides a comfortable operating margin. The 75 kW main motor ensures robust driving force, while the 5-roller configuration minimizes vibration and ensures uniform product quality.
Both the MTW110Z and MTM130 are proven performers for diatomite grinding in Egyptian desulfurization applications. The choice between them depends on specific operational priorities:
It is also worth noting that both mills can be integrated with hot air generators if the diatomite feed has high moisture (above 8%). For typical Egyptian diatomite deposits (which often have moisture below 5%), no additional drying is necessary.
As an excellent manufacturer of ore grinding equipment in China, Shanghai Zenith Machinery Co., Ltd. has accumulated decades of experience in the field of ultra-fine powder grinding. Our product line – from MTW and MTM mills to LM vertical mills, LUM ultrafine mills, and ball mills – covers every conceivable grinding scenario. We understand the unique challenges of the Egyptian market, including fluctuating power supply, ambient dust conditions, and the need for local service support.
Zenith’s mills are known for:
To date, Zenith has supplied over 200 grinding mills to Egypt across various industries – cement, phosphate, limestone, and diatomite. Several desulfurization plants in the Suez Canal Economic Zone and the Helwan industrial area rely on our equipment for their daily operations.
Selecting the right diatomite grinding mill is a critical decision that directly impacts the efficiency and profitability of your desulfurization process. With the MTW110Z and MTM130, Shanghai Zenith offers two outstanding options that precisely meet the 5–10 tph capacity requirement for Egyptian industries. Both mills deliver the required fineness, low operating costs, and long service life.
We invite Egyptian project managers, plant engineers, and procurement professionals to contact us for a detailed feasibility study, sample testing, and on-site layout design. Zenith is committed to providing turnkey solutions from raw material handling to finished product storage.
Contact Shanghai Zenith today to discuss your diatomite grinding needs and receive a customized quotation.
