Optimization method of shot blasting-acid pickling combined type descaling process

Abstract

The invention provides an optimization method of shot blasting-acid pickling combined type descaling process, and belongs to the technical field of steel production. The method comprises the following steps: designing a plurality of shot blasting-acid pickling composite descaling schemes based on different strip steel running speeds; determining the acid consumption required by each shot blasting-acid pickling combined type descaling scheme; constructing a cost function based on the strip steel running speed and the acid consumption, and calculating the descaling cost corresponding to each shot blasting-acid pickling combined type descaling scheme through the cost function; and determining the strip steel running speed corresponding to the shot blasting-acid pickling combined type descaling scheme with the lowest descaling cost as the optimal strip steel running speed, and achieving strip steel descaling work. According to the method, the optimal strip steel running speed is selected with the aim of minimizing the descaling cost, so that the proportion of scale layers removed by the shot blasting system and the pickling system is reasonably and efficiently distributed, and the energy efficiency of the system is effectively improved; and meanwhile, the using amount of acid liquor per ton of steel is reduced as much as possible, and wide market application prospects are achieved.

Description

Technical field [0001] The present invention relates to the field of steel production, in particular, refers to a method of pulling a pulp-pickled composite division process. Background technique [0002] In the steel production process, the acid cleaning line is a process segment that removes the steel surface scales (three oxidation layers) by the chemical acid solution. The production of pickling lines should consume a large amount of acid solution, the three waste emissions are severe, and the acid environment is corroded around the machinery and equipment, and the workers are healthy. [0003] The composite scales of throwing-pickled - acid wash refers to the first use of the shock shock to remove a proportion of scales, and then remove the removal scale of the residual scale layer. Such as figure 2 The squeezed-pickled complex scales showed the preamplifted blasting system and the rear pickup system, including the divination box 1 and the blastout 2 to pass The shower shock...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a shot blasting-pickling compound descaling process optimization method to solve the problem that the current shot blasting-pickling compound descaling technology is immature and cannot distribute shot blasting reasonably and efficiently. The proportion of scale removed by the system and pickling system, if the proportion of scale removed by the shot blasting system in the early stage is too small, it will not have the effect of reducing acid compared with traditional pickling, and will not reflect the advantages of shot blasting and descaling in the early stage; If the scale removed by the shot blasting system in the early stage is too large, it will consume too much power, resulting in the high cost of the entire system

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