The chert gravels are a by-product of sand mining in the south Israel; reserves amount to tens millions tons and continue grow. attempts their comminution for production aggregates by conventional mechanical methods have not yet been successful due high abrasiveness, as well flaky form fracturing. This study was motivated need find an alternative method rock that would ensure aggregate line wit...

For more than 40 years, intensive research has been devoted to shedding light on the mechanisms of asbestos toxicity. Given key role fibre length in toxicity, much work finding suitable comminution routes produce fibres desired size intervals. A promising method is cryogenic milling that, unlike other mechanical reduction techniques, preserves crystal–chemical properties materials. In this stud...

The mycotoxin ochratoxin A (OTA) is known to be heterogeneously distributed both intrinsically (from one individual food item to the next) as well as distributionally (throughout a sample of individual food items) in cereals and cereal-based foods. Therefore, proper sampling and sample comminution are special challenges, but are prerequisites for obtaining sound analytical data. This paper outl...

To reduce the potential of vascular injury without compromising the stone comminution capability of a Dornier HM-3 lithotripter, we have devised a method to suppress intraluminal bubble expansion via in situ pulse superposition. A thin shell ellipsoidal reflector insert was designed and fabricated to fit snugly into the original reflector of an HM-3 lithotripter. The inner surface of the reflec...

Abstract The achievable grinding fineness of spiral jet mills does not only depend on the comminution efficiency in region nozzle jets but is also significantly affected by separation product outlet. Therefore, aim this study to investigate influences outlet diameter and different particle trap rings flow conditions performance, optimizing classifying mills. velocity fields analyzed image veloc...