Northern Heavy Industries Φ5200×24500mm drum mixing

Northern Heavy Industries’ Φ5200×24500mm cylindrical mixer, a material-leveling expert in the sintering process of steel mills, will effectively address many of the pain points of traditional mixers after winning the bid and commissioning in 2023. In steel production, the uniformity of material mixing during the sintering process directly impacts sinter quality. This mixer significantly improves production efficiency and quality through three core design optimizations. First, a multi-stage water spray pipe and pre-filtration system are used, with eight sets of independently adjustable water nozzles positioned along the length of the cylinder. These nozzles, combined with the filtration system, remove impurities from the water and prevent nozzle clogging, improving material moisture uniformity from 60% to 95%, reducing sinter composition fluctuations. Second, the roller assembly has been upgraded to self-aligning roller bearings. Special grease is used within the bearings to automatically compensate for cylinder misalignment, reducing wear by 50% and extending service life from 1.5 years to over three years. Third, an intelligent lubrication system uses sensors to monitor bearing temperature and grease levels in real time, automatically replenishing grease when the grease level is low. This extends the equipment maintenance cycle from 5,000 hours to 10,000 hours, reducing maintenance downtime by four times annually. In use at a large steel plant, this mixer has increased sinter production by 25% and reduced energy consumption by 8 kilograms of standard coal per ton of sinter, resulting in annual cost savings exceeding 10 million yuan. It has become a key piece of equipment for cost reduction and efficiency improvement at the steel plant.