Method and device for detecting accuracy of burden distribution of blast furnace

Abstract

The invention provides a method and a device for detecting accuracy of burden distribution of a blast furnace, belongs to a blast furnace burden distribution method and blast furnace burden distribution equipment, and aims at detecting the detecting accuracy of the burden distribution of the blast furnace. The technical scheme is as follows: the detection device is put into the furnace through a crossed temperature measuring hole; during burden distribution, the detection device collects the distributed furnace burden, and the positions of the impact point and the falling point of the furnace burden are determined according to the quantity and the position of the furnace burden collected by the detection device; the detection device is composed of a furnace burden collecting tank, a sealing cover plate, a cover plate traction apparatus and a fixed surface outside the furnace. The method is simple and quick to operate, good in adaptability and high in accuracy; the method is applicable to various domestic and foreign blast furnaces and also applicable to deviation rectification of inaccurate burden distribution of the same blast furnace in case of inspection, doubt chute off-tracking and abrasion, stock rod chain elongation and the like, and also can be taken as a conventional measure for detecting the accuracy of the burden distribution of the blast furnace and used during conventional inspection. The method and the device solve the problem of the reduction of the accuracy of the burden distribution due to dependence on theoretical calculation and eye estimation, and have remarkable effect on improving the quality of the burden distribution of the blast furnace.

Description

technical field [0001] The invention relates to a method for detecting the accuracy of blast furnace material distribution and a device used in the method, and belongs to the technical field of blast furnace material distribution methods and equipment. Background technique [0002] Bellless material distribution equipment is commonly used in modern large-scale blast furnaces, which has the characteristics of flexible and accurate material distribution. However, the flexible material distribution chute also has problems such as easy deviation, inaccurate maximum angle, easy elongation of the material ruler chain, and inaccurate zero position. Now the blast furnace generally adopts multi-ring distribution. The distribution starts from the maximum angle of α, and then gradually reduces the angle for distribution. Once the maximum angle deviates, the entire distribution matrix will deviate and have a serious impact on the furnace condition. In addition, if the maximum angle is ...

AI Technical Summary

Problems solved by technology

The theoretical calculation considers that the material flow from the material distribution equipment is an arc without width, and the actual material distribution chute distributes the charge with a wide fan, and the theoretical calculation cannot take into account the equipment wear and the interference of the change of charge type on the material distribution process; On-site visual inspection Since the observation hole is on the side of the material distributing device, the observer is subject to interference factors such as oblique observation angle, long observation distance, poor light in the furnace, and furnace material dust during material distribution, making it difficult for the observer to see clearly the position of the furnace material during material distribution at the maximum angle. The edge hits the point, making it difficult to judge whether the maximum angle in the blast furnace cloth regime is accurate

Images