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针对包钢３＃高炉无钟炉顶节流阀在使用中出现的问题，在全面分析比较的基础上，对该节流阀进行了重大改进。实践证明，改进是成功的，效果是良好的。
In view of the problems that occur in the use of the furnace top throttle valve of No.3 blast furnace in Baotou Steel, the throttle valve has been greatly improved on the basis of comprehensive analysis and comparison. Practice has proved that the improvement is successful, the effect is good.