Full homogeneous barium-containing skimming ball for steel making in converter

Abstract

A kind of homogeneous barium-based slag ball used in converter process, belong to slag material used in converter process. The raw material and weight percentage composition for producing slag ball as follow: weight metal and stone 1~95, iron particle or steel particle 0~79, aluminate cement 5~15, magnesium sand 0~5, proportional adding water, weight metal and stone, iron particle or steel particle, aluminate cement, magnesium sand and mixing, packing compact and shaking to preparing the ball, there is a hollow toroid that square crossing passing sphere largest circumference in the sphere surface. The invention of the ball built-in and built-out homojunction, the whole density homogeneity and locate accuracy in steel liquid. The ball shape designed rational, and the ball has stop slag efficiently. The invention can efficiently decrease the steel bag slag blanket thickness; prolong the steel bag length of life. Compare with the current technology, the price is low. It has the profit for the steel factory to further optimization production and improves comprehensive benefit. In addition, the ball contain BaSO4 above 65%, if every stove used one slag ball that we produce, the silicon, aluminium and barium utilization can be decreased, decreasing steel production cost.

Description

technical field [0001] The invention relates to a slag retaining material for converter steelmaking, in particular to a fully homogeneous barium-containing slag retaining ball for converter steelmaking. Background technique [0002] The slag blocking ball is a common device for converter steelmaking. The existing slag blocking balls are fully homogeneous slag blocking balls and counterweight type slag blocking balls. The counterweight slag blocking balls are iron balls wrapped in refractory materials The center part of the ball is cast with iron particles in the center part of the ball, and its outer surface is wrapped with refractory material. Its disadvantage is that because the slag blocking ball is relatively heavy, it is inevitable that there will be bumps during its production, transportation and furnace loading, and the refractory material on the surface is very easy to be damaged. If the slag blocking ball with a damaged surface is put into the converter, molten ste...

AI Technical Summary

Problems solved by technology

Its disadvantage is that because the slag blocking ball is relatively heavy, it is inevitable that there will be bumps during its production, transportation and furnace loading, and the refractory material on the surface is very easy to damage

Mixed vibration forming, although it overcomes the disadvantages of the counterweight slag ball, but because of the use of a large amount of steel particles, the cost is high