Method and device for sorting particles

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a method and a device for sorting particles (such as coal, gravel, or similar bulk materials) based on their geometric shape. The process involves at least two classification stages, sorting the particles by considering their key dimensions (length, width, thickness) in either a spatial or temporal sequence. The classification can be done two-dimensionally or three-dimensionally using vibrating or non-vibrating sieves with different hole shapes and arrangements, enabling the efficient separation of particles with specific morphologies such as roundness, elongation (needle-like), or flatness. The system is particularly effective for industrial applications requiring uniform particle shapes, such as coal for blast furnaces or construction materials.

Use CasesContent extracted from patent full text and abstract with AI.

• Sorting coal for blast furnaces based on optimal particle shape to improve combustion efficiency.
• Producing high-quality gravel or crushed stone with controlled particle geometry for use in construction and road building, enhancing material performance and lifespan.
• Classifying raw or intermediate bulk materials in mining, cement, or metallurgical industries to meet strict shape standards.
• Preparing particle beds for fixed-bed reactors in chemical or pharmaceutical processes, where particle geometry affects flow and reaction dynamics.
• Refining agricultural produce (such as seeds or beans) based on shape to enhance downstream processing or product quality.
• Sorting recycled materials by shape to facilitate further processing or improve value of recyclate streams.

BenefitsContent extracted from patent full text and abstract with AI.

• Higher product quality by enabling the selection of particles with specific, desirable geometries (e.g., less elongated or more cubic, as demanded by certain industries).
• Improved efficiency and performance in final applications (e.g., better combustion in furnaces or higher durability in construction) due to optimized particle morphology.
• Industrial flexibility—can be adapted to various materials and industries, including minerals, construction, agriculture, recycling, chemicals, and pharmaceuticals.
• Enhanced process control and consistency through serial classification, which allows for fine separation according to multiple shape parameters.
• Potential for greater product value and market differentiation, as materials sorted by shape can command higher prices or meet more stringent specifications.
• Reduced waste and improved resource utilization by precisely separating out-of-spec particles early in processing.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The method involves sorting particles (1) in two classifying stages according to their particle form in a temporal or spatial succession. The sorting of the particles takes place after their particle geometry (a,b,c). The sorting takes place by two or three-dimensional classification. The classification takes place in a swinging or non swinging, particularly bent classification level. An independent claim is included for a device for sorting of particles, particularly coal for blast furnaces.