Hybrid disc
AssigneeOmya International AG
InventorsFrancesco Massafra, Christoph Rogels
Life of this patent
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Abstract
A circular disc element having at least two beam elements. Each beam element extends beyond an outer circumference of the circular disc element in an extension direction which is parallel to a radial direction of the disc element. The circular disc element further includes at least two holes extending through the circular disc element in a longitudinal direction which is substantially perpendicular to each of the extension directions with respect to a circumferential direction of the circular disc element, which circumferential direction corresponds to the outer circumference of the circular disc element. The circular disc element can function as a grinding means in a grinding process for grinding slurry.
Claims15
A circular disc assembly for a device for grinding slurry, comprising:
- a circular disc element having a plane;
- at least two beam elements, each beam element having a longitudinal axis each beam element located on the circular disc element such that the longitudinal axis is parallel to a radial direction of the circular disc element, and each beam element extending beyond an outer circumference of the circular disc element;
- at least two holes extending through the circular disc element in a longitudinal direction which is perpendicular to each of the longitudinal axis of the at least two beam elements;
- wherein the at least two beam elements are equidistantly spaced apart from each other with respect to a circumferential direction of the circular disc element, which circumferential direction corresponds to the outer circumference of the circular disc element;
- wherein each beam element comprises a recess, wherein the recess receives a connecting part of the circular disc element;
- wherein each beam element comprises a slot in the form of an elongated hole with a radius, wherein the recess and the slot extends on the longitudinal axis of the each beam element:
- and
- wherein the slot receives fastening elements that secure each beam element to an extension element in an adjustable manner along the longitudinal axis.
A device for grinding slurry wherein steam bubbles are formed during the grinding, comprising:
- an elongated chamber having a rotational shaft extending between a first end and a second end of the elongated chamber;
- wherein at least one circular disc element having a plane is attached to the rotational shaft between the first end and the second end of the elongated chamber such that slurry is ground within the elongated chamber when the slurry is conveyed from the first end to the second end of the elongated chamber;
- wherein the at least one circular disc element comprises at least two beam elements, each beam element having a longitudinal axis, each beam element located on the at least one circular disc element such that the longitudinal axis is parallel to a radial direction of the at least one circular disc element, and each beam element extending beyond an outer circumference of the at least one circular disc element;
- wherein at least two through holes extend through the at least one circular disc element in a longitudinal direction which is perpendicular to each of the extension directions of the at least two beam elements, said through holes configured to pass through the steam bubbles present in the grinding slurry during grinding;
- and
- wherein the at least two beam elements are equidistantly spaced apart from each other with respect to a circumferential direction of the at least one circular disc element, which circumferential direction corresponds to the outer circumference of the at least one circular disc element.
A method for grinding a mineral slurry, comprising:
- feeding slurry into an elongated chamber having a rotational shaft extending between a first end and a second end of the elongated chamber;
- providing at least one circular disc element comprised of at least two beam elements, each beam element having a longitudinal axis, each beam element located on the circular disc element such that the longitudinal axis is parallel to a radial direction of the circular disc element, and each beam element extending beyond an outer circumference of the circular disc element;
- at least two through holes extending through the circular disc element in a longitudinal direction which is perpendicular to each of the extension directions of the at least two beam elements;
- wherein the at least two beam elements are equidistantly spaced apart from each other with respect to a circumferential direction of the circular disc element, which circumferential direction corresponds to the outer circumference of the circular disc element,
- wherein the at least one circular disc element is attached to the rotational shaft extending between the first end and the second end of the chamber;
- and
- rotating the at least one circular disc element to grind the slurry within the chamber when the slurry is conveyed from the first end to the second end of the chamber, wherein steam bubbles are formed during the grinding, and wherein the steam bubbles press through the holes during the grinding.
Dependencies are inferred from the claim text.