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Converter slag-blocking mechanism
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Currently, the use of slag-drawing balls and slag-drawing plugs (rods) in converter furnaces cannot effectively prevent early-stage slag from being discharged during steel tapping. As a result, large amounts of steel slag enter the ladle, posing hazards to the secondary refining process outside the furnace. The re-phosphorization and re-sulfurization make it difficult to keep the steel composition within the desired range.
By employing a slag-blocking mechanism in the converter, steel slag is effectively recycled within the furnace. The splash-slag lining maintenance technique extends the service life of the converter and resolves troublesome issues such as irregular erosion at the tapping spout. The adoption of a new controlled-slag tapping process improves alloy recovery rates, significantly reducing the amount of aluminum added. This results in substantial overall cost savings, enhancing economic benefits and boosting the competitiveness of our products in the market.
The slag-blocking mechanism of the converter consists of a base, a support frame, a fixed component, a sliding mold frame, a spring assembly, and other parts. The upper sliding brick is fixed immovably within the base mold frame, while the lower sliding brick and the bottom nozzle brick are fixed within the sliding mold frame. The sliding mold frame can reciprocate within the support frame along guide tracks, and the contact interface maintains a constant and uniform pressure thanks to the spring assembly. A hydraulic cylinder, serving as the power source, drives the sliding mold frame through a drive mechanism, enabling reciprocating motion that controls the flow of molten steel and effectively blocks slag.
The slide-gate control mechanism consists of a base, a support frame, a slider, a spring box, a clamping elbow, an upper gate brick, an upper sliding plate brick, a lower gate brick, and a lower sliding plate brick. The clamping and releasing of the upper and lower sliding plate bricks are controlled by a spring-box mechanism. Thanks to the rational layout of the spring box, this mechanism is less affected by high temperatures, maintains its elasticity for a long time, is resistant to loosening, is easy to use, features a simple structure, small size, light weight, and long service life.
KYD model, based on the converter's capacity (the table shows commonly used model data).
Model
Adapt to the converter
(t)Use aperture
(mm)Sliding stroke
(mm)Number of springs
(Only)Surface pressure
(t)External dimensions
(mm)Refractory replacement Form
Skateboard external dimensions
(mm)KYD-201
50
110-130
200
12
9
1000*810*370
Online
510*275*50/72
KYD-301
100-120
140-150
230
14
11
1030*820*370
Offline
600*310*50/75
KYD-401
150-220
150-160
260
14
13
1230*1020*420
Offline
660*350*50/80
KYD-501
Over 250
160-180
300
16
14.5
1700*1550*430
Offline
705 × 350 × 50/80
Converter slag-blocking mechanism
Still deciding? Get a sample first!Contact us!
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