The cone and plate viscometer works by sandwiching a small amount of fluid in between a rotating cone and a fixed plate. Instead of pulling with a weight, a motor turns the cone at a steady angular rate. The torque required to do so is measured using a calibrated spring and reported digitally.
Cone crushers are commonly used for secondary, tertiary and quaternary crushing duties. Two variations of cone crusher are used, standard and short head. The chief difference between cone and gyratory or jaw crushers is the nearly parallel arrangements of the mantle and the cone at the discharge end of the cone crusher. The size distribution of the products tends to be determined in such a manner that no particle can fall through during a single open side passage through the crusher. The machine is adjusted by screwing the bowl of the crusher up or down. It is general practice to install ahead of the secondary crusher, a vibratory type of screen in order to screen out all the material that has already been crushed fine enough by the primary crusher, there by increasing the capacity of the secondary crusher.