Hazemag clay crusher for Vietnamese cement plant

Bim Son Cement Co. take delivery of double-rotor hammer crusher for new cement plant

HAZEMAG have supplied a complete clay crushing plant to the Bim Son Cement Co. for a new cement plant in Vietnam. The installation includes a double-rotor hammer crusher, which is designed for a throughput rate of 250 tonnes/h, fed by an apron feeder.

Following extensive tests, a Hazemag 1400 x 1200 HDS-type hammer crusher, with installed power of 2 x 195kW, was specified to achieve a product comprising 99% –60mm with a maximum feed size of 650mm (one edge length).

The installation employs an apron feeder fitted with infinitely variable speed control; this draws the clay feed material from a hopper and conveys it directly into the crusher.

The HDS-type crusher has two 1.4m diameter disc-type rotors coated with wear-resistant, welded hardfacings and is fitted with rows of swing hammers that are suspended between the discs of the rotors and able to swing freely through 360 degrees.

Crushing takes place between the counter-rotating rotors and a centrally located anvil, with the crushed clay passing through openings in grate baskets located underneath the rotors. The distance between the hammers and the grate baskets can easily be adjusted, with the gap spacing of the grate bars determining the final size of the product.

According to Hazemag, the machine’s heavy-duty V-belt drive system allows the crusher to handle even the largest rocks while maintaining peak capacity and without affecting the rotor’s performance.

Of particular significance is the ‘easy-to-service’ design of the crusher, with large maintenance doors providing easy access to all crusher internals. The hammers are easily changed or turned using a hydraulic hammer bolt-removal tool and a special lifting device, while the grate frames, complete with grate baskets, are mounted on assembly carriages that can be completely withdrawn from the crusher housing.