Sampling for continuous cement analysis

System overview

Continuous representative sample extraction is essential for reliable on-line particle size analysis. Malvern recommend robust industry-specific solutions for the Insitec - cement process interface, depending on the flow rate of the process stream. At higher flow rates, typically those in excess of 50 tons per hour, both primary and secondary sampling will be required but at lower flows secondary sampling alone will be sufficient. Tried and tested technology suitable for 24/7 operation in the cement manufacturing environment is available in both cases.

• Primary sampling
  A screw auger is installed in the process stream. Sample is extracted continuously (according to ISO 8656-1) and is delivered into a second smaller chute, the bottom of which is the return leg into the process stream. Representativity is ensured by using a variable screw that enables increased sampling from the edges of the process stream.
  
• Secondary sampling

Overview of the Malvern on-line solution for cement analysis

Detailed schematic of the process interface for two stage sampling.

The recommended auger system is supplied by Iteca, a company which has over 30 years experience in the development and installation of on-line analyzers and controllers for the cement & lime industries.

The Malvern Jet-stream sample eductor for cement applications has proven in-field performance and abrasion resistant components such as a ceramic venturi, for reliable long term operation.

These solutions offer the following benefits:

Simple reliable concept

• Proven industrial usage and acceptance
• Spares readily available
• Familiar to site maintenance staff and operators
• Reliable tones to kg conversion
  

Representative sampling

• Sampling to ISO 8656-1
• Application specific auger flight profile
• Spool piece optimized for application
• Application specific pressure balancing
  

Malvern Link™ system integration

• Simple customized user interface
• Simplified operator and maintenance training
• Simplified connection to plant control system
  

Customer quality procedures easily accommodated in design

• Other sampling accessories easily fitted (e.g. Grab samplers)

	Industrial engineering partners Just as particle size analysis is a critical parameter, representative and repeatable sampling is also essential to the efficient running of a plant. Malvern is a world leader in the development of laser diffraction solutions for industrial applications, but we also work closely with our industrial engineering partners to offer you seamless analysis/sampling solutions. More Information: FLSmidth Automation, ITECA Socadei
	For more detailed information about the eductor including specifications

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