Metso Minerals Industries, Inc.

Metso Outotec USA Inc.

Metso Sweden Ab

Brian Knorr

Lars Grönvall

Lars Gronvall

Matt Gallimore

Kevin Sutherland

System and method for controlling the startup sequence of a roller crusher is disclosed. The roller crusher includes two generally parallel rollers that are separated by a gap where the rollers rotate in an opposite direction. During startup, the gap between the rollers is greater than the gap during normal production and a feeding arrangement is run at a speed that is lower than a normal production feed rate. The rollers are rotated at a predetermined speed that is less than the speed during normal production. Other parameters of the system are set such that material is fed over the entire length of the rollers and the no crushing force is exerted during the startup. The method and system of the present disclosure reduces the amount of stress on the rolls, frame and hydraulic system of the roller crusher.

Startup sequence for roller crusher

A hydrocyclone separator and a system that includes a plurality of such hydrocyclone separators are presented. The hydrocyclone separator includes a head portion having an inlet conduit and an overflow discharge tube arranged in the head portion. The hydrocyclone separator further has an apex discharge port and a tapered separation portion arranged between the head portion and the apex discharge port. The tapered separation portion is tapering distally away from the head portion. Moreover, the head portion further includes an emptying port arranged in the head portion separately from the overflow discharge tube. Hereby, a hydrocyclone separator capable of achieving improved operational efficiency with reduced risk of coarse fraction being misplaced and left in the head portion is presented. This effectively reduces maintenance needs and prolongs the lifespan of the hydrocyclone.

Hydrocyclone separator

A hydrocyclone separator and a method for classifying solid material in liquid suspension are presented. The hydrocyclone separator comprises a head portion having an inlet conduit and an overflow discharge tube arranged in the head portion. The hydrocyclone separator further has an apex discharge port and a tapered separation portion arranged between the head portion and the apex discharge port. The tapered separation portion is tapering distally away from the head portion. Moreover, the hydrocyclone separator has a flow support portion with at least one flow support inlet configured to inject a fluid along at least a portion of an inner surface of the flow support portion towards the apex discharge port, when the hydrocyclone separator is oriented such that the apex discharge port is at a vertically elevated position relative to the overflow discharge tube. Hereby, a hydrocyclone separator capable of achieving improved operational efficiency with reduced risk of clogging the apex discharge port is presented.

A hydrocyclone separator for classifying solid material in liquid suspension is disclosed. The hydrocyclone separator includes a head part having an inlet conduit and a conically tapered separation part. The hydrocyclone separator includes one or more internal edges that disturb the flow of material within the hydrocyclone separator.

Growing community of inventors

Henrico, VA, United States of America

Brian Knorr