Slurry gravity

Fast and reliable slurry gravity samplers

Essa® slurry gravity samplers are designed to achieve consistent, representative, and reliable sampling for both online analysis and metallurgical accounting. Look no further for the most reliable slurry gravity sampling solution in the industry.

Key benefits of our slurry gravity samplers

  • Representative sampling guaranteed

    Our slurry gravity samples employ basic Theory of Sampling principles, the rules of good, representative sampling, to ensure samples are taken in accordance with international standards and best practices.

  • Low-maintenance design

    The durable design of our slurry gravity samplers means less maintenance requirements and longer wear life, saving you time and money.

  • Customised to your needs

    Our design engineers evaluate your material type, pipe routing, slurry flow, and sampler location to suggest the very best slurry gravity sampler for your needs.

Our slurry gravity samplers

Belt Drive Linear Sampler (BDLS)

Our linear cross-cut samplers are designed for optimal, fully representative sampling, emphasising robust and reliable operation in harsh environments. They are ideally suited to high volume flows where a horizontal launder section feeds into a large vertical chute.

  • Positive, uniform drive mechanism ensures reliability and availability
  • Avoid overflow and prevent splashing

Vezin Sampler (VS)

The rotary Vezin slurry gravity sampler is often used for secondary or tertiary cross-stream sampling in metallurgical accounting applications. It suits smaller sample flows and is typically timer-controlled or dependent on the operation of the preceding sampler in the system.

  • Square design simplifies installation and maintenance
  • Easily change cutter size and number
  • Designed for minimum maintenance

Moving Pipe Sampler (MPS)

Our moving pipe samplers are self-contained units for installation in gravity flow, non-pressurised pipe systems. Ideal for smaller diameter pipe work, due to their simple flange-to-flange installation, the feed falls through the sampler, which contains a fixed cutter and a flexible pipe moving back and forth across the cutter, perpendicular to the aperture.

  • Minimal moving parts
  • Inspection openings for easy cutter maintenance
  • Pipe park positioned outside the cutter aperture

Moving Pipe Sampler (MPS)

Slurry Arcual Sampler (SAS)

Slurry Arcual Sampler (SAS)

Arcual-type samplers are designed for cross-stream sampling of a vertical, non-pressurised pipe, falling slurry stream. The fully enclosed unit contains a traversing radial sample cutter that passes at uniform speed through the falling stream of slurry. These samplers are commonly used for composite and accounting sampling.

  • Flanged connection for easy access and installation
  • Inspection openings for easy cutter maintenance
  • Water washdown for quick and easy cleaning

Dual-Stage Sampler (DSS)

Our dual-stage slurry samplers consist of an arcual cutter for primary sampling and a secondary Vezin-style sample cutter. Primary samples are collected in an agitated surge box to keep the slurry in suspension. The secondary sampler then operates either continuously or intermittently to collect the final sample volume.

  • Primary sample cutter washdown between samples
  • Multiple lining options available
  • Flanges allow easy connection to existing pipework

Maintenance & service of our slurry gravity samplers

We have been supplying slurry sampling systems to the mining industry for decades. When you choose FLS to supply your sampling system, you don’t just get a sampler; you get access to those decades of sampling experience. This allows us to offer unparalleled support, from initial sampler design, selection, and installation to maintenance, spare parts, troubleshooting, and optimisation—all backed by our time-tested sampling knowledge and real-world expertise.

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Frequently asked questions

FAQs for slurry gravity samplers

A slurry gravity sampler is a device used to collect representative samples of slurry as it flows through the sampler under gravity.

Slurry gravity samplers use a fixed or moving cutter to intercept the slurry stream and capture a representative sample. The collected sample is then directed into a container for analysis.

Slurry gravity samplers are used for metallurgical accounting and online analysis. Metallurgical accounting tracks material flow through a processing plant, from initial ore to final product. This enables analysis of mass and energy balances, reconciliation, and reporting of recovery rates, production levels, and material losses. Online analysis provides continuous data for real-time process adjustments and optimisation.

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