ISO 9045:1990

Overview

ISO 9045:1990 - Industrial Screens and Screening - Vocabulary establishes a comprehensive set of terms and definitions frequently used in the field of industrial screens and screening processes. Published by the International Organization for Standardization (ISO), this vocabulary standard is essential for professionals engaged in material sizing, particle separation, and industrial screening operations. By providing standardized terminology, ISO 9045:1990 supports clear communication, quality assurance, and operational efficiency across industries such as mining, pharmaceuticals, food processing, and chemical manufacturing.

This standard aligns terminology related to industrial screens, screening processes, screened materials, and associated equipment, forming a foundation for understanding key concepts and ensuring interoperability across global industrial sectors.

Key Topics

ISO 9045:1990 groups screening vocabulary into four main categories:

• Material to be Screened

  • Definitions of terms such as particle, particle size (sieve size), agglomerate, fines, and various moisture types.
  • Describes properties important to screening efficiency, such as bulk density, relative density, and feed characteristics.

• Industrial Screens

  • Covers a wide range of screen types and their components, including woven wire cloth, perforated plates, mesh count, aperture size, screen decks, and specialty screens (e.g., vibrating screen, rotary screen, grizzly, trommel).
  • Details physical characteristics, mounting options, and performance attributes like percentage open area, wire diameter, and plate thickness.

• Screening Process

  • Defines core processes such as screening, sizing, wet screening, dry screening, scalping, dewatering, rinsing, de-sliming, and de-dusting.
  • Explores operational factors that influence screen performance, including blinding, pegging, stratification, amplitude, stroke, frequency, and screen tensioning.

• Products of Screening

  • Clarifies output terminology such as product, size fraction, nominal size, mean size, underflow, overflow, undersize, and oversize.
  • Ensures consistency when describing the results of particle size separation operations.

Applications

ISO 9045:1990 is widely applied across industries where solid materials are separated or sized by mechanical sieving or screening. Its vocabulary is indispensable for:

• Engineering Design and Manufacturing
  • Ensuring proper specification of screen types and performance requirements in product development and equipment design.
• Quality Control and Laboratory Analysis
  • Harmonizing the description of particles, material properties, and screening results in test reports and research.
• Procurement and Supply Chain
  • Establishing common terms in contracts and supply specifications for industrial screens, screening surfaces, and related consumables.
• Operations and Maintenance
  • Supporting training, troubleshooting, and optimization of industrial screening equipment through a shared understanding of technical terms.
• International Trade
  • Facilitating seamless communication between manufacturers, suppliers, and customers across different regions and languages.

Related Standards

The vocabulary provided in ISO 9045:1990 is complemented by several related ISO standards, which offer more detailed technical guidance for screen selection, testing, and measurement:

• ISO 2395:1972 - Test sieves and test sieving - Vocabulary
• ISO 4783-1:1989 - Industrial wire screens and woven wire cloth - Guide to the choice of aperture size and wire diameter combinations - Part 1: Generalities
• ISO 4783-2:1989 - ...Part 2: Preferred combinations for woven wire cloth
• ISO 4783-3:1981 - ...Part 3: Preferred combinations for pre-crimped and pressure-welded wire screens
• ISO 9044:1990 - Industrial woven wire cloth - Technical requirements and testing

These related standards, when used in conjunction with ISO 9045:1990, support a unified approach to industrial screening operations, enhancing product quality, process efficiency, and global trade compliance.

Conclusion

ISO 9045:1990 delivers a standardized vocabulary for industrial screening, improving clarity, efficiency, and quality across all sectors involved in material separation and particle sizing. Adherence to this standard ensures consistent understanding and application of essential screening concepts worldwide.