Method for measuring and calculating filling material line in blast furnace opening charge combined calculation

Abstract

A method for measuring and calculating a filling material line in blast furnace opening charge combined calculation belongs to the field of metallurgy, and comprises the following steps of: deriving a judgment method and a calculation formula for judging the filling material line in blast furnace opening charge calculation according to the relationship among the volume of the filling material, the compression ratio and the filling material line in a blast furnace opening charge process, wherein the calculation formula of compression ratio of each section is shown in the specification, epsilon i is the compression ratio of the ith section, the value range of i is 1-n, and the unit is %; and n is the number of unit spaces divided from the zero stock line of the blast furnace to the central line of the tuyere, and the value range of n is 6-15. The filling material line can be accurately judged in the combined calculation process of the blast furnace opening charge, so that it is ensured that the actual furnace opening charge is loaded into the blast furnace without errors, and it is ensured that the overall ore-coke ratio and the total coke ratio of opening furnace charge are consistent with the plan.

Description

technical field [0001] The invention relates to a method for measuring and calculating the filling material line in the joint calculation process of the starting charge of the iron and steel metallurgy blast furnace. Background technique [0002] Accurate calculation of the filling material line is an important link in the joint calculation process of the blast furnace start-up charge. If the theoretical calculation results of the start-up charge are to be loaded into the blast furnace without error, it is necessary to ensure the accuracy of the filling material line in the calculation. If the theoretical calculation of the filling material If the line is not accurate enough, the actual charging will be inconsistent with the planned charging. In order to meet the requirements of the material line, either more or less batches of material will be loaded, and the result will affect the overall charging of the furnace. The ore coke ratio and the total coke ratio also have a cert...

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Problems solved by technology

The disadvantage of this method is that it does not take into account that the charge compression rate changes linearly at the level of the furnace height, and is not a fixed value, and the material line calculated by the traditional method after filling is often worse than the actual loading situation. In the process of actually loading and opening the furnace charge, once a deviation is found, in order not to affect the overall ore-coke ratio and total coke ratio of the furnace charge, it is necessary to perform complex adjustment calculations, which will affect the charge loading and furnace preparation process

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