Steel slag waste heat recovery system

Abstract

The invention discloses a waste heat recovery system of steel slags. The system comprises a heat pipe and a heating device, wherein the heating device is provided with a chamber in which a liquid medium is accommodated; a steam discharge port communicated with the chamber is formed on the side wall of the heating device; the steam discharge port is communicated with a steam pipe net by virtue of a pipeline; a steam discharge valve is installed on the pipeline between the steam pipe net and the steam discharge port; the heat pipe comprises an evaporator and a condenser; the evaporator comprises a body which is sleeved on the outer wall of a hot-braising device and is internally provided with a circular groove, and a capillary core which is accommodated in the circular groove and is connected with the inner side wall of the circular groove. The circular groove surrounds outside the hot-braising device, the capillary core divides the circular groove into a first runner and a second runner, the first and second runners are communicated by virtue of a gap of the capillary core, and the outlets of the first and second runners are respectively communicated with the inlet and outlet of a condenser by virtue of pipelines. The waste heat recovery system of steel slags disclosed by the invention is capable of recovering heat in the steel slags.

Description

technical field

[0001] The invention relates to the technical field of waste heat recovery in steelmaking production, in particular to a steel slag waste heat recovery system. Background technique

[0002] Converter produces 50-100kg steel slag every time 1 ton of molten steel is smelted. Steel slag has high-grade heat energy and its temperature is as high as 1600℃. Steel slag is mainly composed of tricalcium silicate, dicalcium silicate, manganese oxide, ferrous oxide, magnesium oxide, calcium oxide and a small amount of residual steel. Steel slag must be treated to separate slag from steel. The slag can be used for Cement additives, steel can be recycled.

[0003] At present, domestic and foreign steel slag treatment methods include water quenching method, drum method, shallow plate hot pouring method and hot braising method. Among them, the hot stewing method is to put high-temperature slag into the hot stewing device, then cover the top cover, spray a certain amount of...

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