Back to results
US 7,757,977 B2Granted
Method for comminution of material
AssigneeOutotec Oyj
InventorSami Hindström
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for comminution of material in a grinding mill, in which method the ground material from the mill is classified by means of particle sizes. After the classification of the ground material at least the part of the material having a particle size greater than the desired predetermined particle size is targeted to an electromagnetic energy treatment in at least one stage.
Claims23
Method of processing ground material, comprising:
- a) receiving the ground material,
- b) separating the ground material into a first fraction having a particle size greater than a predetermined particle size, and a second fraction having a particle size not greater than said predetermined particle size,
- c) exposing the first fraction of the ground material to an electromagnetic energy treatment, wherein the operation time for the electromagnetic energy is between 0.01 and 1.0 s, and
- d) grinding the material from the electromagnetic energy treatment step.
1 more element
Method of processing ground material, comprising:
- a) receiving the ground material,
- b) classifying the ground material by particle size,
- c) exposing at least the fraction of the ground material having a particle size greater than a predetermined particle size to an electromagnetic energy treatment, wherein the operation time for the electromagnetic energy is between 0.01 and 1.0 s,
- d) grinding the material from the electromagnetic energy treatment step, and
- e) applying steps b) and c) to the ground material from step d).
2 more elements
Method for processing ore, comprising:
- a) grinding the ore,
- b) separating the ground ore into a first fraction having a particle size greater than a predetermined particle size, and a second fraction having a particle size not greater than said predetermined particle size,
- c) exposing the first fraction of the ground ore to an electromagnetic energy treatment for a time between 0.01 and 1.0 s, and
- d) grinding the ore from the electromagnetic energy treatment step.
1 more element
Dependencies are inferred from the claim text.