Model testing method for adjustment of ore-coke ratio distribution in blast furnace

Abstract

The invention relates to a model testing method for adjustment of ore-coke ratio distribution in a blast furnace, belonging to the technical field of test research in the industry of metallurgy. The technical scheme includes the steps as follows: a blast furnace burden-distributing model is manufactured by the 10-time reduced size of the upper part of the actual blast furnace body, a clapboard is arranged inside the blast furnace burden-distributing model and the clapboard is moved up and down by a pulley system on the framework at the upper part of the blast furnace burden-distributing model so as to imitate burden distribution; and after burden distribution according to on-site burden, the thickness values of ore and coke distributed on the clapboard are measured, the height of the radial burden surface is measured, and then the curve of the shape of the burden surface is drawn, so that the ore-coke ratio of the burden is calculated. The model testing method has the beneficial effects of being simple in operation, correct in measurement, convenient and visualized, saving not only test materials but also test furnace burden and reducing test workload; and the model testing method has the advantage of analyzing the reasonable ore-coke ratio distribution on the bell-less top of the blast furnace as well as radial relevant parameters in an aiming way, therefore the model testing method is a practical method for researching the burden distribution law of the blast furnace and guiding on-site operation in a metallurgical laboratory.

Description

technical field [0001] The invention relates to a model test method for adjusting the coke ratio distribution of blast furnace ore, and belongs to the technical field of test research in the metallurgical industry. Background technique [0002] The ore-coke ratio refers to the ratio of ore thickness to coke thickness at the throat of the blast furnace, expressed in O / C. Reasonable ore coke ratio distribution is one of the two key factors for blast furnace distribution. The distribution of ore coke ratio and the shape of the material surface are two independent and mutually influencing key factors for the control of bellless furnace roof distribution. They mainly affect the gas flow in the lower part of the furnace The distribution of the distribution plays a leading role in regulation. For the comprehensive effect of blast furnace gas flow regulation, the regulation of the ore-coke ratio is the main function, and the regulation of the shape of the material surface is sup...

AI Technical Summary

Problems solved by technology

At present, the algorithm of the background art coke ratio is to use the ratio of the number of ore distribution circles to the number of coke distribution circles as the ore coke ratio in the operation of the blast furnace. This algorithm is ideal and is a theoretical calculation method. In the actual operation of the blast furnace distribution At this time, the ore and coke tend to roll towards each other, resulting in the phenomenon of coke in the ore and ore in the coke. At this time, the pure and simple calculation method obviously cannot reflect the distribution of ore coke in actual production.

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