CONFORMITIES TO LAW OF FORMING LAYER FOR POLYDISPERSE PELLET CHARGE ON SINTER BELT

Mikhail Pazyuk; Anton Mnykh; Irina Ovchіnnіkova; Yurii Kuris

doi:10.26661/2071-3789-2021-1-01

Mikhail Pazyuk Zaporizhzhia national university
Anton Mnykh Zaporizhzhia national university
Irina Ovchіnnіkova Zaporizhzhia national university
Yurii Kuris Unstitute of engineering theplophysic NANSU

DOI: https://doi.org/10.26661/2071-3789-2021-1-01

Keywords: sinter belt pellet charge forming of charge layer, method of modeling, authentication of its grain-size distribution

Abstract

Motion of pellet charge on the loading tray on a sinter belt is accompanied not only by the change of its grain-size composition, but by segregation processes, id est. by the redistribution of charge of different size particles for the most part friable material. The result of this process is formation of local discontinuity with pre-dominance of content for particles of certain factions. The traditional method for analysis of work for loading tray on the basis of factious classification does not allow to educe and analyze appearing heterogeneity in the most part friable material. It results in errors at the calculation for action of the system of the automated control by sintering process and ignoring of notational of the use of segregation of particles of friable material for optimization of technological process. The use of balance method enables to specify and spread understanding of mechanism of processes which take place during motion of pellet charge in relation to the loading tray, and also to form theoretical pre-conditions for the choice of the rational modes of operations of agglomeration separation of sintering plant. It is set that at monotonous increase of angle of slope for loading tray the segregation phenomena increase in a pellet charge, and after achievement of the defined value – go down, id est. have extreme character. Mentioned features of forming of layer for polydisperse material in the conditions of inconstancy of mechanical properties of its separate factions it is possible to take into account at the use of balance of grain-size composition of charge, loaded on a sinter belt, and charge, being on it, when conditional middle diameters of particles of their components must be equal. On the basis of the set conformities to law of forming of friable of structure of layer the method of authentication of grain-size compositions of pellet charge mixture is in theory reasonable in every its horizon taking into account a segregation during loading.

References

1. Korshikov G.V., Khaykov М.А., Buev А.V. Formirovanie strultury sloya pri odnosloynoy i dvukhsloynoy zagruzke shikhty na aglomeracionnuyu lentu / Teplotekhnika i gazodinamika aglomeratsionogo protsessa: temat. otrasl. sbornik. Kiev : Naukova dumka, 1983. S. 22–25.
2. Seytni N., Kinishi S., Edzi I. Segregatsiya agloshikhty pri podche na aglomeratsionnoy lentu. Tetsu to khagane. 1980. Т. 66. No. 4. S. 87–95.
3. Sasaki S,, Ogra Е. Segregatsiya agloshikhty pri podache na aglomeratsionuyu lentu. Tetsu to khagane. 1980. Т. 66. No. 4. S. 86–92.
4. Gotovtsev А.А., Sal’nikov I.M., Tikhonov V.I. Otsenka segregatsii aglomeratsionnoy shikhty Teoreticheskie osnovy i rekhnologiya podgotovki metallurgicheskogo syr’ya k domennoy plavke : respubl. nauchno.-tekhn. konf. Tezisy dokl. Dnepropetrovsk, 1980. S. 29–30.
5. Beer G., Kapel’ F., Erkard B. Novoe v oblasti spekaniya heleznykh rud / Chenye metally. 1976. No. 6–7. S. 27–30.
6. Spektor А.N., Cejtlin М.I., Zagainov L.S. Segregatsiya materialov po vysote aglomeeratsionnoy shikhty. Chernaya metallurgiya. 1967. Iss. 19. S. 29–30.
7. Gotovtsev А.А., Sal’nikov I.M, Tikhonov V.I., Kolyada S.G. Ratsional’naya zagruka shikhty na aglolentu. Teplotekhnika i gazodinamika aglomeratsionogo protsessa: temat. otrasl. sbornik. Kiev : Naukova dumka, 1983. S. 12–17.
8. Frolov Yu.А., Bratchikov S.G., Zaslavskiy Е.Е., Statnikov V.Sh. Issledovanie segregatsii aglomeratsionnykh shikht. Stal’. 1974. No 10. S. 882–888.
9. Shurkhal V.А., Yakubovskij V.P., Nevmerzhitskiy Е.V., Golovin V.V. Izmereni temperatury v protsesse aglomeratsii shikhty. Chernaya metallurgiya. 1970. Iss. 4. S. 1–3.
10. Bazilevich S.V. Intensifikaciya aglomeratsionnogo protsessa i uluchshenie kahestva aglomerata pri spekanii tonkoizmel’chennykh kontsentratov. Chernaya metallurgiya. 1975. Iss. 24. S. 16–23.
11. Efimov S.P., Еfimenko G.G. Vliyanie krupnosti topliva na protsess aglomeratsii i kachestvo aglomerata. Izvestiya vuzov. Chernaya metallurgiya. 1970. Iss. 9. S. 21–25.
12. Еfimenko G.G., Efimov S.P. Raspredelenie ugleroda pri okomkovanii aglomeratsionnoj shikhty. Izvestiya vuzov. Chernaya metallurgiya. 1967. No 4. S. 18–23.
13. Katalymov А.V., Lyubartovih V.А. Dozirobanie sypuchikh i vyazkikh materialov. Leningrad : Khimiya, 1990. 240 s.
14. Pazyuk M.Yu, Grankovskij V.I., Turovcev G.V. Osobennosti formirovaniya sloya polidispesnykh sypuchikh materialov. Izvestiya vuzov. Chernaya metallurgiya. 1983. No 10. S. 13–16.