The discussion on ladle slide gate plate and lower nozzle

During our visits to many steel companies around the world, we found that some of them focus too much on the service life of ladle slide gate plate and lower nozzle, some even ask for more than 10 heats, here are some of our opinions on this condition:

1.Longer service life slide gate plate and lower nozzle leads to more accidents. After being used for some time, leakages are tend to happen at the joints or molten steel could penetrate from the bodies. In addition to that, workers has different opinions on the using conditions of them, if a certain long life is fixed, accidents could easily happen;

Ladle Nozzle

2.Longer service life not necessarily mean less or easier work. Everyone knows Chinese steel industry is very mature, but the Chinese steel plants prefer one heat ladle slide gate plate or four heats at most, that’s because the sliding gate mechanism they choose is very easy to operate, it takes only less than 1 minutes to change the slide gate plates and lower nozzle, many of the long service life ladle slide gate plate and lower nozzle are with sliding mechanisms take 10 to 20 minutes to do that, which would affect the production procedure and increase workload;

3.Longer service life not necessarily equals to lower cost. The prices for long service life ladle slide gate plate and lower nozzles are normally very high, if something happens and the production has to be stopped, the ladle slide gate plate and lower nozzle can not be used again after cooling, which will be wasted.

Ladle slide gate plate
Ladle slide gate plate

Overall, we think it will be better if the customers choose ladle slide gate plate and lower nozzles according to their practical needs, not just based on which are with longer service life.

What is slide gate in ladle?

The function of a ladle slide gate system is to precisely control the steel flow from the ladle to the tundish. RHI Magnesita offers the user-friendly INTERSTOP® S gate series designed for safe, fast and simple operation.

What is slide gate refractory?

Slide gate system is one of the crucial components of steel making process. It is this slide gate that controls the flow of molten steel. It is seen that the performance of this slide gate is heavily dependent upon the refractories used in conjunction with it.

What is slide gate mechanism?

An automatic sliding gate is an efficient way to automate a gate for a commercial or residential building. It is a combination of two wheel assemblies and rear guide wheels that travels smoothly through a sloped opening. The mechanism can be programmed to open and close the gate at the push of a button.

What is a ladle nozzle used for?

Ladle nozzles, also known as ladle slide gate nozzles or ladle slide gates, are refractory components used in the steelmaking industry to control the flow of molten metal from the ladle to the tundish during continuous casting processes.

Why is ladle nozzle clogging?

Ladle nozzle clogging can be predicted by analyz- ing the percentage of a slide gate being opened. Al2O3 and its composite inclusions were the main ones which cause the nozzle clogging during the CC process of the sil- icon steel.

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