All 3 crushers are Hazemag horizontal impactors, a primary and two secondary.
We crush aggregate for the concrete industry. Our sand has too much 4/8 mesh retained fine gravel and not enough finer sand. The only variable we currently can't alter to resolve this is rotor speed.
We are looking to vary speeds of 3 electric motors (400hp, 150hp, 150hp), without having to change pulleys. Motors are for running crushing mills where speed needs to be adapted to material being processed. Cost is an issue.
We are installing a Hazemag SAP5 Primary Impactor (1965 model refurbished) to crush medium hard limestone, from 50" to fines size rocks. We produce 3/16" washed and dry sand, 3/4" washed and dry gravel and 2/8" washed and dry gravel.
We have been recommended a rotor speed of 380. Please...
We have recently aquired a volvo a25b dumptruck for our mine.
The engine starts perfectly well but we cannot engage the transmission. Oil levels have been filled. Fuses have been checked. It appears to be an electrical problem, any ideas?
We have recently aquired a Schorch 295KW 660v 50Hz electric motor as part of a machinery package. Our plant operates at 440v 60Hz. I have been given many conflicting views as to the best solution, rewinding, or a transformer.
The motor is to drive a primary impactor in a quarry operation. We are...
