Bidirectional air quenching system and method for steel slag
A two-way steel and air quenching technology, applied in the field of steel slag treatment, can solve the problems of affecting the effect of air quenching, low efficiency of steel slag, waste of time, etc., and achieve the effect of saving air quenching time, improving the working environment and increasing the time of air quenching
Active Publication Date: 2021-11-26
WUHAN UNIV OF SCI & TECH
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Problems solved by technology
After the furnace is tapped, there will be some molten steel left inside, especially when producing high-quality steel grades, the proportion of residual molten steel is larger. The slag liquid will sink to the bottom of the tank, accounting for about 1 / 6-1 / 5 of the whole tank slag liquid. This part of the slag liquid is more valuable than the upper part of the slag liquid, so the company hopes to treat it separately; Low, waiting for hoisting and transportation wastes a lot of time, and the slag liquid in the slag tank will affect the air quenching effect due to poor fluidity
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[0029] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0030] Such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, a two-way steel slag air quenching system of the present invention includes a steel slag carrier vehicle 1, a track 2, a first air quenching process line 3, a second air quenching process line 4, a control room 5, a fan room 6 and a steelmaking furnace 5 , the car body 11 of the steel slag carrying vehicle 1 is provided with two stations, and the steel slag carrying vehicle 1 is provided with a large flap 12, a small flap 13, a tilting system 14, a slag tank 15, and a slag tank support 16 , the tipping system 14 realizes two-way tipping of the slag tank 15 on the two stations, and the slag carrier vehicle 1 travels above the track 2; the first air quenching process line 3 and the second air quenching process line 4 have the same internal stru...
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The invention discloses a bidirectional air quenching system and method for steel slag. The system comprises a steel slag carrying cart, a track, a first air quenching process line, a second air quenching process line, a control room, a fan room and a steel refining furnace, wherein two stations are arranged on a cart body of the steel slag carrying cart, the steel slag carrying cart is provided with a large turning plate, a small turning plate, a tipping system, a slag tank and a slag tank support, and the tipping system realizes bidirectional tipping of the slag tank on the two stations. The system is reasonable in design, compact in layout and capable of carrying out double-station bidirectional air quenching. According to the method, two tanks of slag liquid are treated at a time through the double-station bidirectional tipping carrying cart and the double-station air quenching process lines, the requirement for respective air quenching for the upper-layer slag liquid and the lower-layer slag liquid of the same slag tank is met, and the method has the advantages that the steel slag utilization efficiency is high, slag particles are recovered in a classified mode, and the air quenching time is saved.
Description
technical field [0001] The invention relates to the field of steel slag treatment, in particular to a two-way steel slag air quenching system and method. Background technique [0002] Steel slag is a kind of solid waste produced in the iron and steel smelting process, and its discharge is about 15% to 25% of the crude steel output. Steel slag contains about 7%-10% iron element, mainly FeO and Fe 2 o 3 form exists. At present, the methods of wet treatment of steel slag include hot stuffing method, hot pouring method, water quenching method, drum method, wind quenching method, granulation wheel method and so on. Due to the smaller particle size and narrow particle size distribution range of the slag treated by air quenching, the digestion of free calcium oxide is also the most thorough, and it has gradually become a more important research direction in the industry. [0003] At present, the wind quenching process is mainly single-station one-way wind quenching, that is, on...
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IPC IPC(8): C21B3/08C21B3/06C21B3/10
CPCC21B3/08C21B3/06C21B3/10C21B2400/026C21B2400/072C21B2400/08Y02W30/50
Inventor 刘源泂程管姜繁智徐松程小军
Owner WUHAN UNIV OF SCI & TECH