Pyrolysis oil (PyO) is a by-product of petrochemical processes. It can be processed by distillation that enables preparation of some fractions which, taking into account their properties, can be employed with advantage as precursor of industrial carbon. These are usually called pyrolysis resins. In contrast to coal tars, the content of heavy polyaromatic hydrocarbons (especially benz-pyren) in these substances, is very low. A choice of PyO distillation fractions has been investigated regarding their employment as of binders for anode matter or Soederberg electrodes, as the case might be. Their testing and petrological analyses have proved different suitability for individual fractions. Attention has focused on transforming the original substances to coke and its properties. Although some data for these pyrolysis resins indicate close analogies, in aggregate they behave differently if used as binders.
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