Material balance control model for return ore bunker in sintering system

Abstract

The invention relates to a material balance control model for a return ore bunker in a sintering system. A control method for the material balance control model comprises the following steps of: 1) performing statistical calculation on optimal discharge amount of cold return ores; 2) collecting real-time material level of the cold return ores, calculating accumulative feeding amount and accumulative discharging amount of the cold return ore bunker, and performing timing; 3) according to current material level value, change rate of the material level and restriction cycle, regulating the optimal discharge amount of the cold return ores through a coefficient, and calculating a set value of current discharge amount of the cold return ores by adopting the following formula: LFNOW is equal to the sum of LFBEF and delta K, wherein delta K in the first restriction cycle is equal to 0; and 4) after one restriction cycle, returning to the step 2 for repeatedly performing real-time regulation. According to the control method for the material balance control model, the material level and the feeding and discharging information of the cold return ore bunker are collected periodically, the change trend of the material level is obtained through the statistical calculation, the optimal discharge amount of the cold return ores is calculated in combination with the current discharge amount of the cold return ores, and the discharge amount of the cold return ores is regulated in real time, so that the purpose of dynamically controlling materials in the cold return ore bunker to be balanced is achieved; and a material list is stable and the cold return ore bunker is reasonably utilized.

Description

Technical field [0001] The invention relates to the technical field of steel smelting process optimization, in particular to a material balance control model for a return ore bin in a sintering system. Background technique [0002] Generally speaking, the fine ore processing system in the iron and steel industry is to first mix various powdered iron-containing raw materials into an appropriate amount of fuel and flux, then add an appropriate amount of water in batches, mix and pellet, and finally use the sintering equipment The material undergoes a series of physical and chemical changes, the process of sticking fine ore particles into agglomerates. [0003] Such as figure 1 Shown is the process flow diagram of the sintering plant system. The mixed ore, solvent, blast furnace return ore, etc. are transported from the buffer silo to the solvent silo of the distributing room via belts. The dust ash is pneumatically transported from the ash silo of the dust removal system to the dust...

AI Technical Summary

Problems solved by technology

[0005] In the past, the control of the material balance of the cold-return ore bin was controlled by the conventional manual experience adjustment control method, which had certain blindness and uncertainty, and failed to form an effective and feasible automatic closed-loop control method.

The quality of sinter fluctuates greatly with the production, so it is necessary to manually adjust the material list of sinter ingredients frequently, which has a certain impact on production

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