Getting the Right Stuff
Quality control is for most part an exact science, with standards and accurate analysers. Knowing and getting the correct sample to measure and analyse, is however not as simple and straight forward. Dry bulk material sampling equipment and knowing how to place and use them is the most critical step in the quality control process. Having the correct bulk material sampling equipment depends on the design and the experience and knowledge behind the design. ITECA has more than three decades of experience and some of the most knowledgable engineers in the field of sampling and quality control. Their designs is based on the best sampling theories and the application of these theories are executed with unrivalled experience and quality workmanship.
ROTATING CUP SAMPLER (PGR)
The ITECA rotating cup sampler, also known as Type PGR, is made of a steel body, fitted into a vertical chute between two flanges. The basic working principle of the rotating cup sampler is based on a pivoting sample spoon that cuts across the entire material stream. Each sampler is customised based on the specific material being sampled with careful attention being paid to the sampler slot size in relation to the particle size distribution of the bulk material.
The speed at which the spoon cuts across the stream is based on the specific material as well as the flow rate of material. Lastly the number of cuts is also influenced by these parameters and is therefore customised for each individual application. The setup is based on the Pierre Gy sampling theory.
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LINEAR BUCKET CUTTER SAMPLER (EGTR)
The Linear Bucket Cutter Sampler or Type EGTR sampler, is designed based on sampling theories and sampling standards. The sampler is installed at the discharge of a conveyer belt in order for the bucket to cross the entire material stream.
In the parked or normal resting position, the sampler bucket is upside down with the slot pointing downwards. From this position the sampling bucket travels across the material stream while still pointing downwards. The bucket then rotate with the sampling slot point up and crosses the material stream again back to the park position. Once reached the bucket rotates and the sample falls into a chute.
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ITECA SLIDE SAMPLER (PR55)
The ITECA Slide Sampler can be used as a Screw Conveyor Sampler or as a Chain Conveyor Sampler. The slide sampler is mounted on the bottom of either the chain conveyor or screw conveyor. Sample is extracted from the conveyor by a slot opening that is sealed off with a pneumatic driven slide gate.
The ITECA Slide Sampler is robust and requires minimal maintenance. There are several options that can be combined with the slide sampler such as manual sample holders, automatic homogenisation vessels and even pneumatic sample transport to a laboratory.
ITECA CROSS BELT SAMPLER (PBA)
Sampling material from a conveyor can either be done with a cross belt sampler, also referred to as hammer sampler, or with a cross stream cutter sampler. Choosing between the two is based on available space and the degree of sample representativeness.
The cross belt sampler can be fitted directly on a conveyor belt without much modification or cutting the belt. This type of sampler can be customised to suit all troughing angles for belt widths up to 2100mm. The cross belt sampler can also be used on inclined belts of up to 18º.
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KILN DISCHARGE CLINKER SAMPLER (PHT100)
The ITECA kiln discharge hot clinker sampler is designed to take clinker samples with material temperatures as high as 1500ºC, directly at the kiln discharge while falling into the clinker cooler. Taking a clinker sampler at this point results in the most representative sample in terms of clinker mineralisation. To prevent mineral phase changes in the clinker, the clinker must be quenched quickly. The sample taken from the kiln discharge is quenched in the sampler to ensure a true representative sample of the clinker mineral phases as the occur in the kiln.
This information gives the kiln operator the best opportunity to control the kiln conditions to ensure consistent clinker quality. The sample can either be collected manually by plant personnel or the clinker sampler can be combined with the ITECA pneumatic transport system to transport the clinker sampler directly to the laboratory.
