Compact hot metal transport system

Abstract

The invention discloses a compact hot metal conveying system. The system comprises a blast furnace area (100), a steelmaking workshop (200) and a transition bay (300), wherein a blast furnace (1) is arranged in the blast furnace area (100), an iron outlet of the blast furnace (1) is provided with a hot metal conveying line (5), the steelmaking workshop (200) is provided with a converter (7) and a feeding bay (11), the hot metal conveying line (5) in the blast furnace area (100) extends into the feeding bay (11), and the transition bay (300) is located between the blast furnace area (100) and the steelmaking workshop (200) and is used for hot metal buffering during accidents in the steelmaking workshop (200). The blast furnace area (100), the steelmaking workshop (200) and the transition bay (300) are arranged in parallel and connected through the hot metal conveying line (5), and the hot metal conveying line (5) is arranged vertical to the blast furnace area (100), the steelmaking workshop (200) and the transition bay (300). The compact hot metal conveying system is smooth in process, compact in general drawing, low in investment and operation cost, and suitable for newly-built integrated iron and steel enterprises.

Description

technical field [0001] The invention relates to a molten iron transportation system belonging to the technical field of metallurgical technology, in particular to a compact molten iron transportation system including ironmaking-steelmaking plane layout, molten iron transportation, interface guarantee and tank maintenance. Background technique [0002] As a connection buffer and transition between the blast furnace and the converter, the molten iron transportation system not only includes the connection, matching, coordination and stability of basic parameters such as material flow, energy flow, temperature, time, etc., but also includes procedures, devices, capacity, conveying equipment, transportation Routes, scheduling management and many other aspects. [0003] In the modern iron and steel production process, the change and evolution of the acceptance, transportation and storage of molten iron from "iron receiving tank + mixed iron furnace" to torpedo tank or molten iron ...

AI Technical Summary

Problems solved by technology

Disadvantages of this mode: 1) Because the molten iron transportation line is perpendicular to the feeding span, and the charging span is located between blast furnaces, the number of blast furnaces cannot exceed two; 2) The feeding span is much longer than the length of other spans in the steelmaking workshop, and the investment at one time is relatively large ; 3) If the capacity of the converter is small and the required molten iron tanks increase, the interference of the feeding straddle crane will be serious

4) The blast furnace is located on the side of the converter, and the total distance of molten iron transportation (the distance between tapping the blast furnace and adding iron to the converter) is still very long, and the area occupied by the general map is still relatively large

Disadvantages of this mode: 1) Because each hot metal tank needs to be transshipped in the transition span, more cranes are required, and the one-time investment is larger; 2) The number of times the hot metal tank is reversed is higher, and the operating cost is higher; 3) Prolong the transportation time of molten iron and the return time of empty tanks, and the temperature drop is larger

However, 1) This mode regards the feeding span as the hot metal tank management area, which has become a weak link in the whole process; 2) The return time of the hot metal tank is short, the iron-steel interface is too rigid, and the buffer capacity is insufficient

3) When the number of blast furnace tapholes is ≥ 3, the span of the feeding span will not be able to enter 6 molten iron transportation lines (6 transportation lines need at least 50 meters distance), so the blast furnace capacity of this mode is limited to 3

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