Crushing & Screening

Gyratory Crusher Concaves

Concaves on the right illustrate the cross section of a typical gyratory crusher, while the left illustrates the same crushing chamber, except that, in place of the straight-face concave, the non-choking type has been substituted. For the sake of direct comparison we have shown the same discharge setting in both diagrams, although a closer setting would be permissible … Read more

Rock Crusher History

History tells us, it was in 1830, the first US patent was issued on a rock crushing machine. It covered a device which, in a crude way, incorporated the drop hammer principle later used in the famous stamp mill, whose history is so intimately linked with that of the golden age of mining. In 1840, another patent was … Read more

Nelson Machinery Atlas Laboratory Jaw Crusher

3″ x 6″ Jaw Crusher AKA 75*150 Rock Crusher The extra heavy frame is cast in one piece and reinforced for greater strength where necessary. The shaft is of a special nickel chrome alloy and is practically unbreakable under the most rigorous conditions. Pulleys and balance wheel are of extra heavy construction and provide ample … Read more

Crusher Concave Profiles

When used for primary or coarse secondary crushing service, the type of crusher described is usually fitted with the style of concave shown on the upper left. These are known as “standard” or straight-face concaves, which have been the standard type of liner ever since the gyratory crusher came into popular use. The distinguishing features of … Read more

Crazy Crusher

Hand Operated Jaw Type Ore Crusher – Grinder That above, looks crazy, but this below IS Totally CRAZY! Figure 66 shows the Taylor Hand Crusher. This consists of two jaws, one of which is stationary and one of which is operated by the hand lever. Both jaws are faced with hard white iron. The movable … Read more

Crushing and Crusher Research Articles

The art of crushing A Single Value Chain Process 2 Crushing Principles of Mechanical Getting Control Scott Drilling Applications-2 Part A The Chemical Crusher Drilling and Blasting Drill Time Drill Cost Mine Quarry Planning Lean Thinking Applied (2) Blast management Environmental impact Liability and Risk Associated With Quarry Operations The Chemical Crusher Drilling and Blasting … Read more

High Capacity Crusher

When the non-choking feature was being applied to existing crushers of the gyratory type, it was found that in several crushing machines, the attendant reduction in receiving opening could be partially offset by sloping the straight portion of the concaves at a wider angle than that for which the top shell was originally designed, because … Read more

Difference Between Single & Double Toggle Jaw Crusher

Single VS Double Toggle Crushers

A double toggle jaw crusher is much larger, heavier, more moving parts and lower throughput than modern single toggle jaw crushers. The lower throughput statement is a bit misleading because it’s partially attributed to the type of bearings they have versus modern crushers, so if one was to upgrade the bearings, throughput could be closer … Read more

Crusher Efficiency Calculations

The following example demonstrates a method of selecting the components of an aggregate plant. Good component efficiency and part performance pre-evaluation is essential to a solid design. The aggregate production requires the consideration of several crushers, feeders and screens. This is not intended to be a typical situation, though it does involve common crusher and … Read more