pyörösäiliötestit

Pyörösäiliötestit, known in English as rotary cylinder tests or tumbling tests, are a method used to evaluate the wear and abrasion resistance of materials, particularly granular ones. This test involves placing a sample of the material inside a rotating cylinder. As the cylinder rotates, the material tumbles and collides with itself and the cylinder walls. This action simulates the stresses and wear that materials might experience during handling, processing, or transportation.

The primary objective of pyörösäiliötestit is to quantify the degradation of the material over a set period or number of rotations. This degradation can manifest as an increase in fines (smaller particles), a decrease in particle size, or changes in the material's physical properties. Different types of pyörösäiliötestit exist, varying in cylinder size, rotation speed, presence of internal lifters or baffles, and the specific material being tested. The test parameters are often tailored to mimic real-world conditions relevant to the material's intended application.

These tests are commonly applied to a variety of substances, including coal, ores, fertilizers, pharmaceuticals, and food products. For instance, in the mining industry, pyörösäiliötestit can assess the durability of coal for combustion or the structural integrity of iron ore pellets. In agriculture, they might be used to determine how well fertilizer granules will withstand handling and storage. The results obtained from pyörösäiliötestit help in material selection, process optimization, and quality control, ensuring that materials can withstand the expected mechanical stresses without excessive loss or degradation.