Bezcherev O. Perfection of blast furnaces of oxygen converters on the basis of post-combustion process research

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0407U004067

Thesis Registration Form

0407U004067.pdf

Applicant for

Bezcherev Oleksandr Sergiyovych

Specialization

05.16.02 - Металургія чорних і кольорових металів та спеціальних сплавів

Date of defense

05-10-2007

Specialized Academic Board

Д 12.052.01

State institution of higher education "Kryvyi Rih National University"

Essay

Research object – post-combustion zones in the cavity of converter type aggregates. The purpose - lowering of power and material expenditures for converter melting by development of new effective devices (methods) for intensification of post-combustion process in the oxygen converters. Methods - mathematical simulation, experimental research in laboratory and production conditions, standard methods of thermometry, chemical analysis, chromatography and mathematical statistics. Novelty - dependences of post-combustion coefficient and coefficient of using post-combustion warmth by the melt from the parameters of post-combustion process for the different variants of his organization and converting cast-iron are got, and also from the type of used crow-bar in charge, „age" of aggregate lining and aver factors; it is set, that the optimum size of stake of the second (given for post-combustion ) oxygen from the common quantity for LD-converter makes ~ (5…10) %, for aggregate with the combined blowing out - ~(5…15) %; it is shown, that organization of post-combustion process in the gas phase above bath by technical-–economical considering for aggregates with the combined blowing is acceptable out and in the slag-gas-metallic emulsion (SGME), and for LD-aggregates - only in SGME. Results - developed static mathematical model of the converter melting with post-combustion process, which allows in the first approaching to set the ranges of optimum values of handling parameters of post-combustion process depending on the variant of tricking blowing, charge of melting and zone of process organization in aggregate into; developed complex functional-determination dynamic mathematical model of post-combustion process in the cavity of oxygen converter taking into account of melting macrokinetics; with its use conducted analytical researches of post-combustion process and got basic conformities to the law for rational his organization in converters with the top and combined blowing; developed new effective methods and devices for intensification and rise of efficiency of post-combustion process in the cavity of converters. Degree of introduction - new oxygen blast furnaces for post-combustion process are introduced in the converter shop JSC “Ilyich Iron and Steel Works“; an annual economic effect is got 406 326,85 UAH. Sphere of use - ferrous metallurgy (converter steel production)

Thesis supervisor

Sushchenko A.V.

Official opponents

Чернятевич А.Г.
Носоченко О.В.

Files

aref.doc

dis--Висновки з дисертації--Висновки з дисертації.doc

dis--Вступ--Вступ.doc

dis--Додаток А--Рис. А.1.doc

dis--Додаток А--Рис. А.10.doc

dis--Додаток А--Рис. А.11.doc

dis--Додаток А--Рис. А.12.doc

dis--Додаток А--Рис. А.13.doc

dis--Додаток А--Рис. А.14.doc

dis--Додаток А--Рис. А.15.doc

dis--Додаток А--Рис. А.2.doc

dis--Додаток А--Рис. А.3.doc

dis--Додаток А--Рис. А.4.doc

dis--Додаток А--Рис. А.5.doc

dis--Додаток А--Рис. А.6.doc

dis--Додаток А--Рис. А.7.doc

dis--Додаток А--Рис. А.8.doc

dis--Додаток А--Рис. А.9.doc

dis--Додаток Б--Додаток Б.doc

dis--Додаток В--Додаток В.doc

dis--Додаток Г--Таблиці Г.1-Г.4.doc

dis--Додаток Г--Таблиці Г.11, Г.12.doc

dis--Додаток Г--Таблиці Г.13, Г.14.doc

dis--Додаток Г--Таблиці Г.15, Г.16.doc

dis--Додаток Г--Таблиці Г.5, Г.6.doc

dis--Додаток Г--Таблиці Г.7, Г.8.doc

dis--Додаток Г--Таблиці Г.9, Г.10.doc

dis--Додаток Д--Додаток Д.doc

dis--Додаток Е--Додаток Е.doc

dis--Зміст--Зміст.doc

dis--Розділ 1--Рис. 1.1.doc

dis--Розділ 1--Розділ 1.doc

dis--Розділ 1--Таблиця 1.1.doc

dis--Розділ 2--Рис. 2.1.doc

dis--Розділ 2--Рис. 2.2.doc

dis--Розділ 2--Рис. 2.3.doc

dis--Розділ 2--Рис. 2.4.doc

dis--Розділ 2--Рис. 2.5.doc

dis--Розділ 2--Рис. 2.6.doc

dis--Розділ 2--Рис. 2.7.doc

dis--Розділ 2--Рис. 2.8.doc

dis--Розділ 2--Розділ 2.doc

dis--Розділ 3--Рис. 3.1.doc

dis--Розділ 3--Рис. 3.10.doc

dis--Розділ 3--Рис. 3.11.doc

dis--Розділ 3--Рис. 3.12.doc

dis--Розділ 3--Рис. 3.13.doc

dis--Розділ 3--Рис. 3.14.doc

dis--Розділ 3--Рис. 3.15.doc

dis--Розділ 3--Рис. 3.16.doc

dis--Розділ 3--Рис. 3.2, 3.3.doc

dis--Розділ 3--Рис. 3.4, 3.5.doc

dis--Розділ 3--Рис. 3.6.doc

dis--Розділ 3--Рис. 3.7.doc

dis--Розділ 3--Рис. 3.8.doc

dis--Розділ 3--Рис. 3.9.doc

dis--Розділ 3--Розділ 3.doc

dis--Розділ 4--Рис. 4.1.doc

dis--Розділ 4--Рис. 4.2.doc

dis--Розділ 4--Рис. 4.3.doc

dis--Розділ 4--Рис. 4.4.doc

dis--Розділ 4--Рис. 4.5.doc

dis--Розділ 4--Рис. 4.6.doc

dis--Розділ 4--Рис. 4.7.doc

dis--Розділ 4--Рис. 4.8.doc

dis--Розділ 4--Розділ 4.doc

dis--Розділ 5--Рис. 5.1.doc

dis--Розділ 5--Рис. 5.10.doc

dis--Розділ 5--Рис. 5.11.doc

dis--Розділ 5--Рис. 5.2.doc

dis--Розділ 5--Рис. 5.3.doc

dis--Розділ 5--Рис. 5.4.doc

dis--Розділ 5--Рис. 5.5.doc

dis--Розділ 5--Рис. 5.6.doc

dis--Розділ 5--Рис. 5.7.doc

dis--Розділ 5--Рис. 5.8.doc

dis--Розділ 5--Рис. 5.9.doc

dis--Розділ 5--Розділ 5.doc

dis--Розділ 5--Таблиця 5.1.doc

dis--Розділ 5--Таблиця 5.2.doc

dis--Список використаних джерел--Список використаних джерел.doc

dis--Титул додатків--Титул додатків.doc

dis--Титул--Титул.doc

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