A bangladeshi agricultural company purchased an mtw european-style grinding mill to process natural gypsum, with a capacity of 3-5 tons per hour and a finished product fineness of 250 mesh for use as fertilizer.
2026-05-08 02:24:38
A leading agricultural company in Bangladesh has recently invested in an MTW European Trapezium Mill from Shanghai Zenith Machinery Co., Ltd. to process natural gypsum into high-quality fertilizer. With a target capacity of 3–5 tons per hour and a finished product fineness of 250 mesh, this state-of-the-art grinding solution is set to enhance local soil amendment practices and boost crop yields.
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Why Gypsum Fertilizer Matters in Bangladesh
Bangladesh's agricultural sector relies heavily on balanced soil nutrition. Natural gypsum (calcium sulfate dihydrate) is a vital source of calcium and sulfur, which improve soil structure, reduce salinity, and enhance nutrient absorption in rice, wheat, and vegetable crops. By processing local gypsum deposits into a fine 250-mesh powder, the company can produce a cost-effective fertilizer that addresses regional soil deficiencies.
Why the MTW European Trapezium Mill?
Shanghai Zenith's MTW series trapezium mill is a perfect grinding machine for fine powder production between 80–400 mesh. Its key advantages make it ideal for this Bangladeshi project:
- Large capacity with low energy consumption: The MTW mill delivers 3–22 t/h capacity while consuming 60%% less energy than a ball mill of the same grade under ideal conditions.
- Compact design, lower investment: The mill forms an independent production system from bulk material to finished powder, reducing plant and foundation costs.
- Adjustable output fineness: A modular impeller adjustment device allows operators to change fineness simply by swapping impellers—perfect for meeting the precise 250-mesh requirement.
- High induced air efficiency: The high-efficiency impeller fan boosts air induction from 62%% to 85%%, ensuring stable operation and consistent product quality.
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Technical Specifications for the Project
For this application, the selected MTW mill model operates with the following parameters:
- Input size: 0–35 mm (gypsum chunks after primary crushing)
- Output size: 250 mesh (approx. 58 microns), ideal for direct soil application or blending
- Capacity: 3–5 t/h, matching the client's production schedule
- Power consumption: Significantly lower than ball mills, reducing operational costs
The mill's working principle ensures high efficiency: crushed gypsum enters the main grinding chamber via a variable frequency belt feeder. Material is ground between the roller and ring, then classified by a powder selector. Qualified 250-mesh powder is collected in a cyclone, while coarse particles are returned for re-grinding. The entire system operates under positive and negative pressure, with an integrated pulse dust collector meeting strict environmental standards.
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Global Expertise, Local Support
Shanghai Zenith Machinery Co., Ltd. is a hi-tech engineering group with over 30 years of experience in industrial powder grinding. Our equipment holds ISO international quality certification, European Union CE certification, and Customs Union CU-TR certification. With a marketing network covering more than 180 countries—including extensive operations in Asia and Africa—Zenith provides comprehensive after-sales support. Overseas offices in over 30 countries ensure that Bangladeshi clients receive timely technical assistance, spare parts, and operator training.
Alternative Mill Options for Bangladesh
While the MTW mill is perfectly suited for this 250-mesh gypsum project, Zenith offers a full range of grinding equipment for agricultural applications:
- MTM European Trapezium Mill: An economical choice for 80–400 mesh with less investment, ideal for smaller-scale operations.
- LM Vertical Grinding Mill: Offers 24-hour continuous operation and automation for large-scale fertilizer plants (3–340 t/h).
- Raymond Mill: A classic solution for 10–325 mesh with 99%% screening efficiency.
- LUM Ultrafine Vertical Mill: For ultra-fine gypsum powder (325–2500 mesh) used in specialty fertilizers.
- Hammer Mill: For producing 0–3 mm coarse gypsum granulates for animal feed supplements.
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Conclusion
This Bangladeshi agricultural company's choice of an MTW European Trapezium Mill exemplifies how advanced grinding technology can transform local mineral resources into high-value agricultural inputs. With reliable performance, energy efficiency, and precise fineness control, the MTW mill is helping farmers access affordable, effective gypsum fertilizer. As Bangladesh continues to modernize its agriculture, Zenith's solutions—from MTW to LM and LUM mills—provide the scalability and quality needed for sustainable growth.
Frequently Asked Questions
1. What is the maximum capacity of the MTW mill for gypsum?
The MTW series can achieve up to 22 tons per hour for fine grinding (80–325 mesh). For this 250-mesh gypsum fertilizer project, the unit is configured to deliver 3–5 t/h, easily meeting the client's production target.
2. Can the MTW mill handle input material larger than 35 mm?
No. The maximum feed size is 35 mm. Feed material must first be crushed to <35 mm using a primary crusher (e.g., jaw crusher or hammer crusher) before entering the MTW mill to ensure optimal grinding performance and prevent damage to internal components.
3. What maintenance is required for the MTW mill?
Routine maintenance includes checking the grinding roller and ring wear every 500–1000 hours, lubricating bearings monthly, and inspecting the classifier impeller and fan. The mill's design allows easy access to wear parts, and Zenith provides a full spare parts package with each order.
4. Is the MTW mill environmentally friendly?
Yes. The system operates under positive and negative pressure with a pulse dust collector, effectively capturing all dust emissions. The mill's sealed design and efficient fan meet national environmental standards, making it suitable for agricultural processing facilities near residential or farming areas.
5. How does the MTW mill compare to a ball mill for gypsum grinding?
The MTW mill consumes over 60%% less energy than a ball mill of the same capacity, has a smaller footprint (no separate classifier or conveyors needed), and offers easier fineness adjustment. For 250-mesh gypsum fertilizer, the MTW mill is the more cost-effective and efficient solution.
6. Can the MTW mill also produce other fineness levels for different fertilizers?
Absolutely. The MTW mill can produce 80–400 mesh powder by simply changing the classifier impeller. For example, you can switch from 250 mesh (58 microns) to 200 mesh (74 microns) for lime fertilizer or 325 mesh (45 microns) for specialty micronized fertilizers.
7. What is the lead time for an MTW mill order in Bangladesh?
Standard lead time for the MTW mill is 30–45 days after order confirmation, depending on model and customization. Zenith's overseas office network ensures fast shipping to Chittagong or Dhaka ports, and local engineers can assist with installation and commissioning within 2 weeks of arrival.
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