Investigations on the possibility of selective grinding and benefication of quartz-pecoraite ores of the Ufaleiskoye deposit have been carried out. Methods of computer X-ray microtomography have been used to study the morphometric features and pore volume parameters of samples, and these data was compared with results of quantitative microstructural analysis. The performed research shows the powerful capabilities of X-ray computer microtomography method for solving scientific and practical problems related to the study of physical and mechanical properties of rocks, the determination of ore minerals liberation, the evaluation of their content, the analysis of the granulometric composition and the spatial distribution of their grains. Analysis of mineralogical and geochemical composition of ores showed that these ores meet the criteria for selective disintegration. An analysis of flotation experiments results showed that when material is grinded in a roll mill, the consumption of reagents is 25% lower than when grinding in a ball mill if the same degree of nickel extraction is achieved.
Die Voruntersuchungen zeigen, dass die elektrohydraulischen Zerkleinerung von carbon fiber reinforced polymer (CFRP) zur Freilegung von C-Fasern generell möglich ist. Wie andere Verfahren zum C-Faser-Recycling auch, hat die aufgezeigte Methode Vor-und Nachteile. Unter der Betrachtung der Versuchsreihen für das Verbundmaterial CFRP und seiner Einzelkomponenten Epoxidharz bzw. C-Fasern, bei konstanten Prozessbedingungen während gleicher Schockwellenbehandlung von 1 bis 500 Impulsen à 600 J Ladeenergie, lassen sich erste Erkenntnisse für das elektrohydraulische CFRP-Recycling gewinnen.The preliminary tests present that the electrohydraulic fragmentation of carbon fiber reinforced polymer (CFRP) is generally feasible and frees carbon fibers. Just like other recycling processes for carbon fibers, the demonstrated method has its advantages and disadvantages. In consideration of the test series for the composite material CFRP and its single components epoxy resin and carbon fibers, under uniform processing conditions during shock wave treatment by 1 to 500 pulse per 600 J charging energy, first research findings are gained by electrohydraulic recycling of CFRP.
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