barite grinding mill for desulfurization in Ivory Coast 10-20 tph

1. Introduction

Barite (barium sulfate, BaSO₄) is an essential industrial mineral widely used as a weighting agent in drilling fluids, in the chemical industry for barium compounds, and increasingly in flue gas desulfurization (FGD) systems. In thermal power plants and industrial boilers, barite powder is employed to remove sulfur dioxide (SO₂) from exhaust gases, a process critical for meeting environmental emission standards. Ivory Coast (Côte d’Ivoire), with its growing energy sector and industrial base, is expanding its power generation capacity. To comply with international environmental regulations, the country is adopting advanced desulfurization technologies. This creates a significant demand for efficient barite grinding mills capable of producing fine barite powder (typically 200–325 mesh, 74–44 microns) at a capacity of 10 to 20 tons per hour (tph).

Shanghai Zenith Machinery Co., Ltd., a leading Chinese manufacturer of ore grinding equipment, offers a comprehensive range of mills tailored to such requirements. With decades of experience in ultra-fine powder grinding, Zenith’s solutions combine high efficiency, reliability, and energy savings. This article examines the application of barite grinding mills for desulfurization in Ivory Coast, focusing on models that deliver the required 10–20 tph output.

2. Barite in Flue Gas Desulfurization

Flue gas desulfurization (FGD) is a process that removes sulfur dioxide from exhaust gases. Barite powder, when injected into the flue stream, reacts with SO₂ to form barium sulfite (BaSO₃) or sulfate (BaSO₄), which can be easily captured. The efficiency of this reaction depends on the fineness and purity of the barite powder. Typically, barite is ground to a particle size of 200–325 mesh (D97 = 74–44 µm) with a specific surface area suitable for high reactivity. For a typical power plant burning high‑sulfur coal, the required barite feed rate can range from 10 to 20 tph, making a medium‑capacity grinding mill essential.

Ivory Coast’s energy sector is rapidly developing. The country aims to increase its electricity generation capacity through thermal plants and biomass co‑firing. To avoid environmental penalties and ensure sustainable operation, these plants must install FGD systems. Local availability of barite deposits (e.g., in the regions of Touba, Odienné, or along the coast) offers an opportunity to source raw material domestically, reducing import costs. However, processing this barite to the required fineness demands robust grinding equipment.

3. Key Considerations for Mill Selection

When selecting a grinding mill for barite desulfurization in Ivory Coast, several factors must be evaluated:

• Feed size: Run‑of‑mine barite may have lumps up to 30–50 mm. The mill must accept such feed without pre‑crushing.
• Product fineness: Typically 80% passing 200 mesh (74 µm) or finer. Adjustability is important.
• Capacity: 10–20 tph continuous operation.
• Moisture content: Barite is non‑hygroscopic, but any moisture exceeding 6% may affect drying requirements.
• Operating cost: Energy consumption, wear parts life, and maintenance downtime.
• Local support: Availability of spare parts and service in West Africa.

Zenith’s MTW Trapezium Grinding Mill and LM Vertical Grinding Mill are particularly well‑suited for this application. They offer high capacity, fine product size, and proven reliability in mineral processing plants worldwide.

4. Recommended Mill Solutions

Based on the required throughput of 10–20 tph, two models from Zenith’s portfolio stand out:

• MTW138Z Trapezium Mill – capacity 6–17 tph (flexible, can approach 17 tph at finer settings).
• MTW175G Trapezium Mill – capacity 9.5–25 tph, ideal for the upper end of the range.

Both mills feature multiple patents, compact structure, long service life, and eco‑friendly operation. They are particularly effective for grinding non‑metallic minerals like barite to 0.045–1.6 mm (325–10 mesh). For desulfurization, the target is usually 200 mesh; these mills can easily achieve that with high throughput.

4.1 Technical Parameters

The following table summarizes the key specifications of the recommended models:

Both models can be adjusted to produce barite powder with a D97 of 74 µm (200 mesh) while maintaining the desired capacity. The MTW175G is particularly recommended when the plant requires a steady 15–20 tph output, as it provides a comfortable margin.

4.2 Key Advantages

• Patented trapezium grinding ring – improves grinding efficiency and reduces wear.
• Integral classifier – ensures consistent product fineness.
• Centralized lubrication – minimizes maintenance.
• Environmental protection – equipped with pulse dust collector and noise‑reducing design, meeting strict emission standards.
• Reliability – over 6000 MTW mills have been installed globally.

5. Application in Ivory Coast

Ivory Coast’s industrial sector is growing, with new cement plants, power stations, and mining operations. The country’s barite reserves are estimated to be significant, but most raw barite is currently exported or sold as lump ore. By investing in a local grinding mill, plant operators can add value and reduce logistics costs. Zenith’s MTW mills are already operating in similar environments across Africa, including Nigeria, Ghana, and South Africa, proving their resilience under tropical conditions and variable power supply.

The typical flow sheet involves a primary jaw crusher reducing barite to < 40 mm, then feeding a bucket elevator to a storage bin, and finally to the MTW mill. The mill’s integrated classifier returns oversize particles for regrinding, ensuring a uniform product. The finished barite powder is collected by a bag filter and conveyed to storage silos for subsequent use in the FGD system.

6. Maintenance and Service Support

Shanghai Zenith Machinery offers comprehensive after‑sales support to Ivory Coast customers. The company’s network in West Africa provides:

• On‑site installation and commissioning.
• Training for local operators and maintenance staff.
• Supply of genuine wear parts (grinding rollers, rings, liners).
• Remote technical assistance via digital platforms.

Zenith’s MTW mills are designed for ease of maintenance. For example, the grinding roller assembly can be replaced without removing the main shaft, reducing downtime. The main engine and classifier are modular, allowing quick access for inspection.

7. Economic and Environmental Benefits

Deploying an MTW mill for barite grinding in Ivory Coast offers multiple benefits:

• Cost savings: Local processing eliminates import duties on finished barite powder, which can be 30–50% cheaper than imported material.
• Job creation: Operation and maintenance of the mill create skilled employment.
• Environmental compliance: Fine barite powder improves SO₂ removal efficiency, helping plants meet IFC emission guidelines.
• Energy efficiency: Zenith’s mills consume 20–30% less energy per ton than traditional Raymond mills.

The table below compares typical operating costs (estimated for Ivory Coast conditions):

8. Conclusion

Ivory Coast’s growing need for environmentally responsible power generation creates a strong market for barite grinding mills used in desulfurization. The throughput requirement of 10–20 tph is perfectly met by Zenith’s MTW138Z and MTW175G Trapezium Mills. These machines combine high efficiency, low operating costs, and proven reliability. By choosing a local grinding solution, Ivorian plant operators can reduce dependency on imports, create local value, and ensure stable operation of their FGD systems.

Shanghai Zenith Machinery Co., Ltd. is committed to supporting Africa’s industrial development with top‑quality grinding equipment and expert technical service. For detailed project proposals and quotations tailored to your specific barite characteristics and site conditions, please contact our regional office or visit our global website.

9. References

1. Shanghai Zenith Machinery Co., Ltd. – Product Catalog (2025 Edition)
2. “Flue Gas Desulfurization: Technologies and Economic Analysis,” Journal of Environmental Management, 2023.
3. Ivory Coast Ministry of Mines and Energy – National Energy Strategy 2025–2030.