Method and device for switching control over material piles in iron ore powder sintering

Abstract

The invention discloses a method and device for switching control over material piles in iron ore powder sintering. The method comprises the steps that a material pile switching command is received, and bin inventories of a plurality of iron mixture feeding bins are acquired; the feeding amounts of the multiple iron mixture feeding bins are distributed according to the feeding total amount need for iron ore powder and the bin inventories of the multiple iron mixture feeding bins; the old material consumption aggregate value of the oil material pile generated after the material pile switching command is received is acquired every other preset time; and if the old material consumption aggregate value is equal to the bin inventories of the multiple iron mixture feeding bins, it is judged that the oil materials are used up, and the auxiliary material ratio is acquired according to the ingredients of an iron mixture of the new material pile, and the feeding quantity of the auxiliary materials is controlled according to the auxiliary material ratio. According to the method, uninterrupted supply of the two piles of raw materials can be achieved, no interferential material pile switching process exists, aligned connection and automatic ingredient updating of the two piles of materials are achieved, the auxiliary material ratio is automatically adjusted according to the updated ingredients, and therefore ingredient stability of sinter is guaranteed.

Description

technical field [0001] The invention relates to the technical field of sintering production process control in the iron and steel metallurgy industry, in particular to a method and device for controlling the switching of stockpiles in iron ore powder sintering. Background technique [0002] Sintering production is a process in which iron ore powder (main material), fuel, solvent, etc. are mixed together, mixed with water, ignited on the sintering surface, and then sintered under the action of draft. In the current sintering production process, the iron mixture as a bulk material is generally prepared into a stockpile by the stockyard. The stockpile is long and has a trapezoidal cross-section for easy access during production; There are differences in the composition of the sintered ore. During the sintering production process, auxiliary materials should be added according to the composition of the iron mixture pile to ensure that the composition of the finished sintered ore ...

AI Technical Summary

Problems solved by technology

[0003] However, there are two problems to be solved in the process of changing the material stack: one is how to ensure the seamless (or even) docking of new and old materials, if there is a mix of new and old materials, it will cause uncontrollable composition of the mixture; It is how to automatically change the ratio of auxiliary materials after the composition is updated to ensure the stability of the chemical composition of sinter

[0005] However, there are problems: in the whole process of changing the stockpile, it is manually operated, the operation method is not intelligent enough, the labor cost is high and the efficiency is low, and it is easy to cause the stockpile to be changed due to human factors. untimely, or inaccurate distribution of ingredients in the new stockpile when changing the stockpile, etc.

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