FLSmidth Ball Mill 3.2×5.5m

The FLSmidth Ball Mill 3.2×5.5m is a robust, high-capacity grinding mill used in primary and secondary grinding circuits across mineral processing, cement, and chemical processing industries. With a shell diameter of 3.2 metres and an effective grinding length of 5.5 metres, the BM-3.2×5.5 falls in the medium-large industrial scale that is well-suited to concentrating plant throughput requirements in the 200–500 t/h ore processing range, delivering ground product at 80% passing 75–150 microns depending on ore hardness and feed size. The mill operates in closed circuit with KREBS hydrocyclones in most mineral processing configurations, with the cyclone overflow reporting to downstream flotation or leaching circuits and the underflow returning to the mill for further grinding.

The FLSmidth ball mill design features a welded steel shell with replaceable liner plates in Cr-Mo alloy steel or rubber composites, trunnion-mounted on large-bore hydrodynamic journal bearings that are proven for decades of continuous service. The main drive girth gear and pinion set is precision machined and hardened, with oil mist lubrication that maintains a full film under all load conditions. The FLSmidth design's flexibility in liner configuration — from lifter-bar profiles optimised for coarse grinding to classifying liners for fine grinding — allows the same mill shell to be reconfigured for different ore grinding stages without mechanical modification, extending the useful equipment life.

Maaden Phosphate Company at Wa'ad Al-Shamal, the world's single largest phosphate mining and processing complex, operates multiple FLSmidth ball mills as the core of its phosphate ore beneficiation plant's grinding circuits. The reliable, low-maintenance performance of FLSmidth ball mills at Wa'ad Al-Shamal's extreme desert conditions — with summer ambient temperatures exceeding 50°C, significant dust, and limited access for heavy maintenance equipment — has established FLSmidth as the preferred mill supplier for Saudi mineral processing projects. Saudi Cement Group's cement grinding facilities also use FLSmidth ball mills in closed-circuit cement grinding configurations, where the mills grind clinker, gypsum, and limestone to the fineness required for concrete applications.

Razz Middle East provides FLSmidth ball mill supply, installation, and aftermarket support in Saudi Arabia. Our local engineering team supports ball mill specification for greenfield projects, liner change-out planning and execution, main bearing inspection and refurbishment, and the supply of OEM spare parts from our in-kingdom stock. We serve mining and cement customers in Riyadh, Jeddah, Dammam, Jubail, Yanbu, Wa'ad Al-Shamal, and all Saudi industrial sites.