加氧炼鋼用的吹管在吹氧时,噴嘴要插到鋼液里面約100公厘,(如图1),因此吹管的熔耗很大。为了节約吹管的消耗,我們曾用过在吹管外层加火磚套筒,和纏石棉繩等办法,但成本都比较高。經过了几次試驗,現采用下列材料混合,功效与纏石棉繩一样,而成本要降低十一倍以上。 Oxygen steel used in the blowing pipe blowing oxygen, the nozzle to be inserted into the molten steel inside about 100 mm, (Figure 1), so the torch of a large melting loss. In order to save the consumption of blowing pipe, we have used in the outer layer of the pipe blowing fire bricks sleeve, and asbestos rope and other means, but the cost is relatively high. After several tests, the following materials are now mixed, the same efficacy and entanglement of cotton rope, and the cost should be reduced more than 11 times.