Likhenko A. Scientific fundamentals and practice of production of carbon reducing agent for non-blast furnace users.

In the dissertation the scientific of blending coal mixtures with coal-containing activators (CCA) were developed and implemented; carbonisation of tese blends rovided the production f carbon educing agents of higer quality ( RA ) using a part of underloaded coke vens at Ukraine coke works. Main relationshis were found for the distribution of some elements ( К, Na, Fe, Cl ) in the Donbass hard coals and anthracites and on this base the established for choosing CCA using the ash cotent ( A>46% ) and rank ( R<0,9% ). The behaviour of granulated rejects chosen by these critera and rawlong-flae coal mixed with caking coals was studed and established that organic and mineral nature enables the interaction between CCA fragmets of thermal tranformation in both CCA and coals. ne of the manifestation of this interation s intencification of polycondensation processes. The technological application and reasonable content of CCA was determined in the raw material base of the production of RA of higher reactivity and specific resistance. A grade composition was developed as a main reserve variants raw material base ( % ), respectively 30G, 55Zh, 15CCA and 55G, 35Zh, 10CCA. It is show that the preparation scheme DSh ensures effective combination of size, weighted mea size, bulk density and cakig capacity of the blend containing CCA. The results of tests in the amman furnace reveaed a number of advantages of new RA to coke nuts frst of all a higher reactivity and specific resistace and reducing capacity.