Blast furnace top charging bucket weighing pressure compensation coefficient calculation method

Abstract

The invention provides a blast furnace top charging bucket weighing pressure compensation coefficient calculation method. The method comprises the following steps of: acquiring and storing a group of blast furnace top pressures P and corresponding blast furnace top charging bucket weights G in a blast furnace bulge test process on the basis of a blast furnace bulge test; and respectively calculating a corresponding pressure difference value corresponding to each acquired and stored blast furnace top pressure P, dividing the corresponding pressure difference values which satisfy the same conditions into same groups, randomly taking a blast furnace top pressure from each group, calculating pressure percentages of the taken blast furnace top pressures, and combining the pressure percentages with the bucket weights corresponding to the blast furnace top pressures to calculate required pressure compensation coefficients K according to a corresponding formula. According to the method provided by the invention, the influences, on the charging bucket weighing pressure compensation coefficient calculation correctness, of the furnace top pressure fluctuation and mechanical deformation can be reduced, so that the reliability of blast furnace top charging bucket weighing is improved.

Description

technical field [0001] The invention relates to the technical field of blast furnaces, in particular to a method for calculating the weighing pressure compensation coefficient of a blast furnace top material tank. Background technique [0002] At present, blast furnaces generally adopt material-free bell tops. In order to improve smelting efficiency, modern blast furnaces have higher and higher requirements for the refinement of cloth. Due to the harsh environment of the furnace top and the limitation of installation conditions, the weighing detection of the bellless furnace top has become a difficult problem. [0003] The material tank material gravimetric method (distributing material to the blast furnace according to the gravimetric method) is the most important means of blast furnace material distribution, and the accurate weighing of the material tank is the premise of realizing the gravimetric method of material distribution. Furnace top tank scale is a commonly used ...

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Problems solved by technology

Furnace top tank scale is a commonly used weighing tool for tank material weight method, but it is often affected by factors such as blast furnace roof pressure and mechanical structure deformation during the weighing process, and the reliability of the weighing results is limited. Thereby restricting the fine production of blast furnace

[0004] For this reason, an intelligent pressure compensation weighing instrument on the top of the furnace has appeared to eliminate the influence of the blast furnace pressure. However, in the actual production process of the blast furnace, in view of the interference of various external factors that will seriously affect the accurate weighing of the top tank scale, Once the material tank is mechanically deformed, the pressure compensation coefficient must be modified at any time. Therefore, the random rate of modification of the compensation coefficient is very high. The overall accuracy of the weighing distribution system is low and the stability is poor. Heavy reliability has caused a certain negative impact on the stable production of the blast furnace

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