Development of an Uniaxial Caking Tester

To investigate the formation and growth of solid bridges between urea particles, the changes in the contact region between two discrete particles are measured. The work is carried out using a Double-Particle-System (DPS). The DPS was stored in a climatic chamber. The effect of load, temperature, relative humidity, and storage time on the formation of a bridge between these particles was analyzed. The objective was to describe the geometrical changes in the contact region and to measure the strength of the resulting interparticle bridge.

Section: Acknowledgementmentioning

confidence: 99%

Caking of Urea Prills

Wahl¹,

Kirsch²,

Bröckel³

et al. 2006

“…The theory of the uniaxial caking test, the function of the tester, and the filling procedure have been described in detail by Roeck et al [5]. Similar research on the filling procedure and the failure strength of powder in a uniaxial tester has been done by Nysaeter and Enstad [6].…”

Section: Test Materialsmentioning

confidence: 99%

“…In this project a uniaxial test rig, the so-called "COSTT Uniaxial Caking Tester" (CUCT) was developed at the TU Braunschweig (Germany) [5]. The experiences, difficulties, and suggestions for the evaluation of round robin tests with this uniaxial tester in different laboratories are presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

Comparative Testing of Powder Caking

Weigl¹,

Pengiran²,

Feise³

et al. 2006

Self Cite

In a collaborative research project called "Consumer Oriented Solids Transport Technology" (COSTT), a uniaxial caking tester was developed to measure the caking propensity of bulk solids under controlled environmental conditions. To validate the results gained from this tester, a series of round robin tests were run, using an organic acid of known humidity dependence as test material. These tests showed that even seemingly minor deviations in the test procedure can cause significant deviations in the measured uniaxial strength. This paper gives an indication of the level of details required to run a reliable caking test and the obtainable reproducibility.

“…This research work was performed as part of the collaborative research project "Consumer Oriented Solids Transport Technology (COSTT)" [16][17][18][19]. The authors would like to thank the European Union for the funding of the COSTT-project under the "Competitive and Sustainable Growth" program.…”

Section: Acknowledgementmentioning

confidence: 99%

Formation and Growth of Crystal Bridges in Bulk Solids

Bröckel¹,

Wahl²,

Kirsch³

et al. 2006

Solidification and caking of bulk solids often occurs during storage or while being transported to the customer. To investigate the formation and growth of solid bridges between two discrete particles, the modification of the contact region between these two particles stored in a climatic chamber is examined. The effect of load, temperature, relative humidity, and storage time on the formation of a bridge is analyzed. The objective is to describe the behavior of crystalline or salt-like granules under real storage conditions.