A special spreader with heat-insulating cover for traveling with molten iron

Abstract

The utility model relates to a special spreader with a thermal insulation cover for traveling with molten iron, which belongs to the technical field of lifting appliances. The spreader includes door-shaped hook beam assembly, insulation cover, insulation cover lifting system, insulation cover folding or opening and closing and locking system, hinge device on the ladle, and electrical control system; the insulation cover and the ladle are connected through the hinge device The insulation cover lifting system is directly installed on the door-shaped hook beam assembly, and the locking system is connected with the hinge device; the main equipment driving is responsible for supplying power to the special electrical control system and receiving useful signals from each other to complete the sequence of actions of the spreader Control and maintain the necessary interlocking relationship with each other. The advantage is that the special spreader with simple mechanism, reliable action, stable operation, good continuity and high degree of automation is used to realize the cover operation of the molten iron ladle on the way of driving and transfer, and to ensure that the cover can avoid the ladle in time during the iron mixing operation. For water flow and slag flow, after the iron mixing operation is completed, the cover is timely covered to control heat loss to the greatest extent.

Description

technical field [0001] The invention belongs to the technical field of hoisting appliances, and in particular provides a special hoisting appliance with a heat-insulating cover for a traveling vehicle with molten iron. Background technique [0002] At present, there are two modes of transfer transportation of molten iron from the blast furnace casting yard to the converter or electric furnace, ground and air. The ground transportation is realized by special locomotives, cars or transport trolleys carrying molten iron tanks or torpedo tanks lined with refractory materials. , the air transportation basically takes place in the iron ladle of the steelmaking plant, and the iron ladle is hoisted by the metallurgical crane. With the rapid promotion of molten iron pretreatment technology, the concept of one ladle to the end is being strengthened, which puts forward stricter requirements on the life of the ladle, while the traditional open iron ladle and ladle have large loss of ref...

AI Technical Summary

Problems solved by technology

For the molten iron ladle with barrel structure, the traditional management mode is not to add a cover. The traditional concept is that if the cover is added, the iron mixing operation cannot be normal, because the normal understanding of the overall cover is poured into the initial iron in the molten iron, and the water in the ladle will wash the inside of the cover. For refractory materials, the molten iron flow is also attached to the mouth of the bag due to the weight of the cover, making the liquid surface wide into a waterfall shape, which not only increases the radiation and convection area of ​​the molten iron flow, increases heat loss, but also makes it more difficult to position the crane. Large, and there is also the problem that the overall cover is not easy to fix when the ladle is turned over

But no matter how good the scheduling is, the heat loss caused by radiation and convection at the top of the lidless ladle accounts for about 50% of the total heat loss here.

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