Hydraulic roller press granulation machine

Product Description

The dry roller granulator or alled hydraulic roller press granulation machine adopts the dry rolling technology to compress powdered materials with a moisture content of ≤ 5% into flakes or blocks and then undergoes crushing, granulation, and screening processes to transform the flake and block materials into granular materials that meet the requirements for use. Dry rolling granulation mainly relies on external pressure, which forces the material to pass through the gap between two relatively rotating rollers and compress into pieces. During the rolling process, the actual density of the material can increase by 1.5-3 times, thereby achieving a certain particle strength requirement.

Application

Fertilizer: Potassium sulfate, potassium chloride, Russian red potassium, ammonium chloride, potassium nitrate, monoammonium phosphate, diammonium phosphate, ammonium sulfate, ammonium bicarbonate.

Powder: Antioxidants, bleaching agents, zinc oxide, lead oxide, calcium chloride, potassium carbonate, cryolite, aluminum fluoride, brake powder, rubber and plastic additives, white carbon black, calcium aluminate, phosphate rock powder, fillers, feed additives, imidacloprid, steelmaking additives, snow melting agents, bentonite, aluminum oxide powder, phosphogypsum, desulfurization gypsum, beneficiation agents, as well as graphite, carbon black, etc.

Granulation Principle

The raw materials are uniformly fed into the feeding hopper through a quantitative feeder, and paired rollers rotate in reverse at the same speed. One set of roller-bearing seats remains stationary inside the frame, while the other set of roller-bearing seats moves on the frame guide rails, using hydraulic cylinders to apply pressure and make them close to each other. There are many holes of the same shape and size arranged regularly on the surface of the rolling mill, and the valleys are aligned with the valleys. The dry powder material continuously and uniformly enters between the two rolling rolls from above, relying on its own weight and forced feeding. After entering the biting area, the material is gradually bitten into the trough by the rolling rolls. As the rolling mill rotates continuously, the space occupied by the material gradually decreases and is gradually compressed, reaching the maximum forming pressure. Subsequently, the pressure gradually decreases, and the pressure block falls off the hole due to its elastic recovery and self-weight, entering the crushing, shaping, and screening device, ultimately forming qualified granular products.

Technical Data