Secondary Gyratory Crushers
The use of large primary crushers made secondary crushing necessary, but this department was taken care of nicely by the existing lines of standard gyratory machines. In commercial crushed stone plants, there was gradual increase in the number of products, but generally a sufficient demand existed for the coarser grades for ballast and macadam roads […]
Small Jaw Crusher Capacity-Sizing Table
Massive, heavily reinforced, steel frame and bumper. Anti-friction roller bearings throughout. Side bearings sealed in carrier, permits removal of bumper without exposing bearings to dust and dirt. Jaw crushers are stock in most sizes. Sizes: 2¼” x 3½” through 40″ x 48″. https://www.911metallurgist.com/estimate-jaw-crusher-capacity
Svedala Nordberg Metso Allis Chalmers Gyratory Crusher Parts
Screening Crusher Feed
The feed to a crusher should not contain an excessive amount of fine material; this could be stated a little more definitely by saying that it should not contain an excessive amount of material smaller than the crusher product size. Just what constitutes an “excessive amount” depends of course upon several factors, chief among which […]
Crusher Close Side Settings
The actual minimum safe closed side setting of a crusher will vary somewhat, for any given crushing machine, depending upon the character of the material, the amount of fines in the feed, and whether the crusher is being operated under choke-feed or regulated feed conditions. It is possible, when all conditions are favourable, to operate gyratory crushers, […]
Crusher Performance Factors
It is entirely possible for a crusher to choke at some other point in the crushing chamber than the theoretical choke-point. When the setting of a fine-reduction crusher is too close for its eccentric throw and for the general proportions of its crushing chamber, there is a tendency toward building up a choke in the […]
Blake Jaw Crusher
In the history of crushers, both chronologically, and by virtue of its standing in the field of heavy-duty crushing, the Blake jaw crusher stands first in the list. All of the large, heavy-duty primary crushers of the jaw type are built around the Blake principle which, for simplicity and brute strength, is unsurpassed by any […]
Crusher Reduction Ratio
I have mentioned the fact that, as the % of voids in the crushing chamber decreases, the production of fines by attrition increases. This is like saying that, as the Crusher Reduction Ratio in any given crusher is increased, the % of fines in the product will increase, even though the discharge setting remains unchanged. Both of these statements […]
How to Prevent Crusher Choking
We all understand how choke feeding a crusher makes for good operation and product size but operators need to also know How to Prevent and avoid that same Crusher from Choking. It is apparent that although the distance between successive horizontal planes increases gradually as these planes move downward (due to increased throw of the […]
High-Speed Gyratory Crushing –> Fine Cone Crushers
I covered briefly the development of various types of reduction crushers of the gyratory family. Below you see a gyratory reduction crusher, which introduced the cylindrical top shell, flared head, and reversible concaves. Even with the older style of straight concaves, with which this machine was originally fitted, it represented a distinct step forward in […]