of modern steel enterprises and leads to the fact that each process and reactor
works in its own way without any coordination. To solve this problem,
buffer reactors, such as torpedo tank for the mixing of hot metals, heating
furnace for molten steel, and soaking pit before rolling, had to set up among
continuous manufacturing processes (such as blast furnace, continuous cast-
ing, and tandem rolling mill) and intermittent production reactors (such as
steelmaking furnace and cogging mill). More seriously, when disorder and
contradiction by the production discordance at each branch plant, workshop,
and process step occur, human orders of intervention and arbitration have to
be employed. However, from the point view of the macroscopic physical
nature and laws of dynamic operation of steel manufacturing process, mass
flow, energy flow, and information flow go through the entire production
process. The integration, configuration, and interaction of the three “flows”
not only satisfy the steel production, but also have an influence on smooth
running of the entire manufacturing process such as the production pace and
labor productivity, on the product quality, and the environment, and mean-
while, they reflect the utilization efficiency of various factors, such as mate-
rial consumption, energy consumption, and land and capital investment.
Based on the deep study of the dynamic intersection and reasonable transfor-
mation of the three “flows,” Ruiyu Yin has put forward the three major
functions of the new generation of iron and steel manufacturing process, that
is, clean steel production platform with low cost and high efficiency, clean
and efficient energy conversion, and nonhazardous treatment process dealing
with large amount of social wastes. This new concept of resource-conserving
and environment-friendly iron and steel production has been realized during
the design, construction, and operation of Shougang Jingtang Iron and Steel
United Co. Ltd at Caofeidian region in China, which stopped formerly
designing steel plants in China just by copying foreign industries, and
stopped designing steel plants just by uniting static pieces of individual reac-
tors without smooth system for the production.
Therefore, many issues during steel manufacturing process can be sum-
marized as and upgraded into the rational cooperation and integration of
mass flow, energy flow, and information flow. This new logic for the way of
engineering thinking can be applied to the optimization control of process,
the planning of metallurgical engineering, the design of iron and steel plants,
the dynamic operation and management of steel production, also used as the
assessment of the life circle of steel industries, accordingly, the effect of
which on natural and social environment would be evaluated in a more
scientific and reasonable way.
Based on the concepts and spirits above, Ruiyu Yin has performed pro-
spective and rigorous thinking and studies on the integration theory and its
analysis method of metallurgical process during the past 10 years, and he
proposed the following theories: concepts and fundamentals of dynamic
operation of the process, fundamentals and feature analysis of dynamic
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