Blast furnace molten iron runner flow nozzle
A technology of iron trough and flow nozzle, which is applied in the field of refractory material processing, can solve the problems of poor viscosity and fluidity of molten iron, shorten the service life of iron trough, and low flow speed of iron trough, and achieve excellent anti-burst performance and prolong service life , Improve the effect of iron flow and service life
Inactive Publication Date: 2016-07-20
DENGFENG DESHENG REFRACTORY
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Problems solved by technology
[0002] At present, the newly-built blast furnace or the blast furnace after the blast furnace is stopped for maintenance is not stable at the initial stage of operation, the molten iron is viscous and fluidity is not good, and the flow rate in the iron ditch is low. When the flow rate in the iron ditch is high, the molten iron will overflow out of the iron hook after quickly accumulating in the iron ditc
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Embodiment 1
[0015] Embodiment 1: as figure 1 A blast furnace iron ditch flow nozzle shown includes an iron ditch shell 1 and a protective brick layer 2 arranged outside the iron ditch shell 1; a working layer 3 made of iron ditch castable is laid inside the iron ditch shell 1 ; The outer surface of the working layer 3 is provided with a protective lining 4 ; the protective brick layer 2 is provided with an anchor ring 5 .
[0016] Wherein, the working layer 3 is made of magnesia-carbon brick material; the protective brick layer 2 is made of three-grade high-alumina brick material; the protective lining layer 4 is made of silicon nitride bonded silicon carbide material, which The thickness is 100 mm; there are two anchor rings 5 .
[0017] In the blast furnace iron ditch flow nozzle of the present invention, the protective lining is low in cost and can be used directly; if the molten iron overflows out of the iron ditch after tapping, it is easy to clean when cleaning residual iron, whi...
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The invention discloses a blast furnace molten iron runner flow nozzle. The blast furnace molten iron runner flow nozzle comprises an iron runner shell and a protection brick layer arranged at the outer portion of the iron runner shell. Work layers made of iron runner castable are laid in the iron runner shell. A protection lining is arranged on the outer surfaces of the work layers. Anchoring hanging rings are arranged on the protection brick layer. The blast furnace molten iron runner flow nozzle has the beneficial effects that the protection lining is low in cost and capable of being directly used; after tapping, if molten iron overflows out of an iron runner, residual iron is removed easily, the outermost work layer can be effectively protected, and the service life of the iron runner can be prolonged; manufacturing is easy and convenient, the labor intensity is greatly lowered, and rapid replacement, installation and production tapping can be achieved on the molten iron runner field; erosion resistance, scouring resistance, stripping resistance and thermal shock stability of an molten iron runner flow nozzle prefabricate part to the molten iron are sufficiently improved, and the bursting preventing performance is excellent. The iron passing amount of the work layers of the molten iron runner flow nozzle can be greatly increased, and the service life of the work layers of the molten iron runner flow nozzle can be greatly prolonged.
Description
technical field [0001] The invention relates to a molten iron ditch nozzle of a blast furnace, which belongs to the field of refractory material processing. Background technique [0002] At present, the newly-built blast furnace or the blast furnace after the blast furnace is stopped for maintenance is not stable at the initial stage of operation, the molten iron is viscous and fluidity is not good, and the flow rate in the iron ditch is low. When the flow rate in the iron ditch is high, the molten iron will overflow the iron hook after quickly accumulating in the iron ditch. When cleaning the residual iron on the iron trough after the iron tapping is normal, the residual iron has been firmly combined with the working layer of the iron trough, and the outermost working layer will be lifted while cleaning the residual iron, which can reach 50% in severe cases. ~ 80mm, which seriously damages the working layer of the iron trough and shortens the service life of the iron troug...
Claims
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Inventor 景夫生
Owner DENGFENG DESHENG REFRACTORY