Method for quickly eliminating waste materials and remaining iron in a furnace during blast furnace overhaul

Abstract

The invention relates to a method for quickly eliminating waste materials and remaining iron in a furnace during blast furnace overhaul. The method is a quickly eliminating method for mechanically detaching waste materials and carbon bricks in a furnace on the premise that a blast furnace shell is locally changed, particularly for mechanically detaching and cleaning furnace materials and carbon brick refractory materials on the premise that the blast furnace shell is locally changed, and moreover synchronously knocking and crushing remaining iron clots in the furnace by means of detaching and falling of the upper cooling wall, and removing both remaining iron clots and waste materials out of the furnace by virtue of a grab excavator. The method has the characteristics of use of few labors, high detaching speed, convenience in operation, quick construction, safe construction and the like, and can be used for increasing the speed for cleaning waste materials in the furnace in the process of blast furnace overhaul. Compared with traditional manual detaching and cleaning mode, the method has the advantages that the speed for cleaning waste materials and remaining iron in the furnace during blast furnace overhaul can be increased and the safety factor of the process of constructing in the blast furnace can be improved.

Description

technical field

[0001] The invention relates to a maintenance process of metallurgical equipment, in particular to a method for quickly removing waste and residual iron in a blast furnace during overhaul. Background technique

[0002] During the overhaul of the metallurgical ironmaking blast furnace, it is necessary to remove and clean up all the residual charge, nodules, carbon bricks in the furnace, and residual iron clots in the blast furnace. The traditional cleaning method is to use a water gun from the top of the furnace to cool down the furnace when the blast furnace stops ironmaking and the residual iron in the furnace is released. The tuyere enters the furnace, and manual cleaning and dismantling are performed using operating tools such as picks and shovels. The dismantled furnace waste is removed from the furnace bottom residual iron release port, and then transported to the designated place by the loader. When the waste in the furnace is cleaned up to the residu...

Examples

Embodiment Construction

[0018] The used tool of the present invention comprises: one 60-type excavator, two gas welding and cutting torches, some 5-ton chain-reversing, some 30-ton jacks, and three 100-ton jacks. see figure 1 As shown, the rapid removal method of scrap and residual iron in the furnace in the blast furnace overhaul of the present invention comprises the following steps:

[0019] a. After the blast furnace stops ironmaking and the residual iron in the blast furnace is released, first use a water gun to pump water from the manhole 4 on the furnace roof of the blast furnace body 1 to cool down the furnace until the temperature in the furnace drops to a level suitable for construction personnel. When the entering temperature (about 20-30°C) can stop the operation of fetching water and cooling down.

[0020] b. Construction workers remove the large, middle and small sets of all the hot air outlets 15 on the blast furnace body 1 and transport them away from the blast furnace.

[0021] c. ...

technical field

[0001] The invention relates to a maintenance process of metallurgical equipment, in particular to a method for quickly removing waste and residual iron in a blast furnace during overhaul. Background technique

[0002] During the overhaul of the metallurgical ironmaking blast furnace, it is necessary to remove and clean up all the residual charge, nodules, carbon bricks in the furnace, and residual iron clots in the blast furnace. The traditional cleaning method is to use a water gun from the top of the furnace to cool down the furnace when the blast furnace stops ironmaking and the residual iron in the furnace is released. The tuyere enters the furnace, and manual cleaning and dismantling are performed using operating tools such as picks and shovels. The dismantled furnace waste is removed from the furnace bottom residual iron release port, and then transported to the designated place by the loader. When the waste in the furnace is cleaned up to the residu...

Examples

Embodiment Construction

[0018] The used tool of the present invention comprises: one 60-type excavator, two gas welding and cutting torches, some 5-ton chain-reversing, some 30-ton jacks, and three 100-ton jacks. see figure 1 As shown, the rapid removal method of scrap and residual iron in the furnace in the blast furnace overhaul of the present invention comprises the following steps:

[0019] a. After the blast furnace stops ironmaking and the residual iron in the blast furnace is released, first use a water gun to pump water from the manhole 4 on the furnace roof of the blast furnace body 1 to cool down the furnace until the temperature in the furnace drops to a level suitable for construction personnel. When the entering temperature (about 20-30°C) can stop the operation of fetching water and cooling down.

[0020] b. Construction workers remove the large, middle and small sets of all the hot air outlets 15 on the blast furnace body 1 and transport them away from the blast furnace.

[0021] c. ...

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