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Ladle mechanism


LMM TOTAI offer a complete product and service portfolio for all steelmaking processes.
From basic and non-basic bricks and mixes, slide gate plates, isostatic products and prefab components to special machinery, mechanisms and repair systems.

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The company provides a wide range of products and services used in converter, EAF, Ladle, tundish and other kilns and furnaces. We also equipped with world advanced facilities such as Laeis automatic hydraulic press HPF2500, Eirich R19 mixer, Shimadzu made XRF-1800 sequential X-Ray fluores-cence spectrometer, by focusing on product research and development and quality control. Our products also supply to Asia , Europe, America and Africa and other countries and regions.

Ladle mechanism

1. The sliding gate plate device is to compress the spring plate through the surface so that the spring is compressed to generate a reaction force, so that there is enough pressure to maintain stability. The spring has good safety and its performance has reached the same international technical level.

2. The upper and lower door opening structure, the mechanism is convenient to disassemble and assemble the refractory material, and the operation is simple. After the sliding trolley is pushed and hung on the connecting rod, no manual operation is required. Therefore, it is simple to use, reasonable in structure and scientific.

3. This sliding plate mechanism device is a new generation of ladle sliding nozzle device developed by the company. Its biggest feature is that it realizes automatic loading of surface pressure, and drives the sliding mold frame and fixed mold frame

through the stretching of the oil cylinder.Fast pressurization, automatic loading of surface pressure, greatly reduces labor intensity, and makes the force between the slides more uniform, improves the safety performance of the device and the number of continuous slides of the slides, reaching the international advanced level.

Ladle mechanism - Fixed mold frame

The fixed frame is fixed on the foundation plate, the upper slide gate plate is installed in the fixed frame, and the slide gate plate is fixed by the press brick corner block.

Ladle mechanism - Slide frame

The action of the lower slide gate plate is realized by the sliding frame, which is embedded in the switch frame. The expansion of the cylinder is transmitted to the sliding frame through the connecting rod, thus realizing the closing function of the lower slide gate plate. Like the fixed frame, the lower slide gate plate is also fixed in the sliding frame by the press slide adjusting block.

Ladle mechanism - Switch frame

The switch frame is connected to the fixed frame, the pressure between the slide gate plate board is realized by the spring on both sides of the switch frame, through the rotation of the pneumatic wrench, tighten the four surface pressure bolts (or pull the cylinder to a certain position), the spring press plate is transferred to the spring, so that the spring compression pressure, the pressure is transmitted to the fixed frame through the surface pressure rod boom, so that the upper and lower slide gate plate between enough pressure, Ensure safe use of slide gate plate.

Ladle mechanism - Spring

Surface pressure spring is the most critical part of the whole mechanism. It is made of special heat-resistant alloy, which provides enough strong and stable surface pressure for the normal operation of the slide gate plate. The spring used by the good slide gate plate mechanism is made of imported heat-resistant alloy steel material, and each spring is strictly tested before leaving the factory to ensure the reliability of quality. In order to ensure the normal operation of the spring, the use of compressed air for cooling. Under normal service conditions, spring made of imported heat-resistant alloy steel materials can generally be used 1000-1500 furnace.

Ladle Mechanism Type

According to the capacity of ladle, it can be divided into several types (data of common types are shown in the table).

TypeLadle Capacity(Ton)Max. Bore Diameter(mm)Sliding stroke(mm)Number of Springs(pcs)Surface Pressure(Ton)Voerall Dimension(mm)Weight(kg)Weight of Slide gate plate(kg/set)
LMM-50Fless than 1005015086650*1200*32075010.8
LMM-80Fmore than 2108020088740*150*350108039.8


LMM YOTAI established in 2007. Our production technology comes from Japanese Yotai. As an experienced and international player in the refractories industry. We have succeeded in expanding both the breadth of its product range and the depth of its services. From raw material selection, refractory portofio & optimization, installation & services & recycle of used refractories on site to further reduce client’s Opex & Capex in refractory consumption per ton steel output, meanwhile improve product quality of client.

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