Method for operating a refiner and refiner
By adjusting the rotational speed of grinding plates based on product quality, the method and refiner design address inefficiencies in existing technologies, achieving energy-efficient production of high-quality fibrous material.
EP4752275A1Pending Publication Date: 2026-06-03ANDRITZ AG
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- ANDRITZ AG
- Filing Date
- 2024-11-29
- Publication Date
- 2026-06-03
AI Technical Summary
Technical Problem
State-of-the-art refiners for breaking down organic fibrous material are inefficient and have high energy consumption due to fixed rotational speeds regardless of product quality, leading to suboptimal energy usage.
Method used
A method and refiner design that adjusts the rotational speed of grinding plates based on product quality, using variable-speed motors and frequency converters, allowing for continuous or discontinuous adjustments to maintain desired product quality while reducing energy consumption.
Benefits of technology
Achieves efficient operation with reduced energy consumption by dynamically adjusting rotational speed according to product quality, ensuring high-quality output with lower energy input.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure IMGAF001_ABST
Abstract
The invention relates to a method for operating a refiner (1), wherein grinding plates (2) are rotated relative to one another by means of a drive in order to comminute organic fibrous material located between the grinding plates (2) and / or to separate fibers, forming a product of fibrous material and / or separated fibers. To achieve a particularly efficient process, the invention provides that a quality of the product, in particular homogeneity, is detected and the relative rotational speed of the grinding plates (2) is changed depending on the quality. The invention further relates to a refiner (1) for fibrous organic fibrous material to obtain a product of fibrous material and / or separated fibers, wherein the refiner (1) comprises grinding plates (2) which are rotatable relative to one another by means of a drive.
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