Abstract
Содержание
- Introduction
- 1. The relevance of this topic
- 2. The purpose and objectives of the study, the expected results
- 3. The research and results
- Conclusion
- References
Introduction
In the
initial period of production of the steel from BOF it gets in a scoop
of the
primary slag, which can contain up to 20 - 30% FeO. Its penetration
leads to an
increased waste deoxidizing agents and dopants, rephosphorization of
metal,
reduces the efficiency of furnace steel processing and output of
suitable.
Study of the dynamic behavior of steel and slag in the future will
allow more
efficient use of disposable self-destructive "plug", which is
installed inside of the tap hole of the BOF. For the study of the
relative
motion of the metal and slag at an inclination of the converter this
process
was modeled.
1. The relevance of this topic
Relevance
of the topic this research is to study and improvement of the
technological
features of exploitation "tampon" to improve the quality of their use.
It is advisable to explore the technological features of the device for
closure
and the time intervals of destruction "tampon"
at time of BOF production of
steel, to
determine the timing of attack on the metal and slag tap hole.
2. The purpose and objectives of the study, the expected results
The main
objectives of the study:
1. Design
and fabrication of physical models for the study of the BOF slag-off
primary.
2.
Determination of hydrodynamic flow around a blocked vent fluid in the
bath
converter.
3. The
study of peculiarities of the funnel.
4.
Identifying features of the interaction of different materials from
which the
swab is made.
5.
Justification of the most effective configuration of a tampon.
3. The research and results
A
physical model of the BOF is made in
1:6 scale to industrial 160 tons of oxygen converter "Enakievo Steel"
in compliance with the geometric similarity of the working space of the
unit.
The constant geometric similarity is chosen for the convenience of
making such
a model, the complexity of the experiments and the convenience of
monitoring of
the process under study. The finished installation is made of
transparent
Plexiglas (Fig. 1), which makes it possible to observe visually the
motion of fluid
in the converter modeling.
Figure 1 – Setting for the study of the cut of slag in the converter.
The investigation of the mutual movement of the metal and slag in the vicinity of the outlet in the initial period of the production of the steel.
In the
initial period of production of the steel from BOF it gets in a scoop
of the
primary slag, which can contain up to 20 - 30% FeO. His penetration
leads to an
increased waste deoxidizing agents and dopants, rephosphorization of
metal,
reduces the efficiency of furnace steel processing and output of
suitable.
Study of the dynamic behavior of steel and slag in the future will
allow more
efficient use of disposable self-destructive "plug", which is
installed inside of the tap hole of the BOF. For the study of the
relative
motion of the metal and slag at an inclination of the converter this
process
was modeled.
The
study was conducted
on a physical model of the oxygen converter using water
is modeled steel
.Transformer
oil is
modeled slag.
At
the initial stage
(Fig. 2a)
is clearly visible boundary between two media: 1 - "slag," 2 -
"steel". During the first portion of the slope of the converter
"slag" fall into the tap hole
(Fig. 2b).
Figure 2 – The initial stage of production of the oxygen converter
As far as the
running – on of the modeling liquids above the tap hole
making a crater that
assists the hit of the slag in the steeling scoop. It the speed of the
incination of converter is low, then all the time of inclination there
is a
process of tightening of the slag
Conclusion
In the initial period of production of the steel from BOF it gets in a scoop of the primary slag, which can contain up to 20 - 30% FeO. Its penetration leads to an increased waste deoxidizing agents and dopants, rephosphorization of metal, reduces the efficiency of furnace steel processing and output of suitable. Study of the dynamic behavior of steel and slag in the future will allow more efficient use of disposable self-destructive "plug", which is installed inside of the tap hole of the BOF. For the study of the relative motion of the metal and slag at an inclination of the converter this process was modeled.As far as the running – on of the modeling liquids above the tap hole making a crater that assists the hit of the slag in the steeling scoop. It the speed of the incination of converter is low, then all the time of inclination there is a process of tightening of the slag.
References
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