Title

INTRODUCTION OF i BOX PICKLING TECHNOLOGY – HIGH PICKLING PERFORMANCE FOR DIFFICULT-TODESCALE MATERIAL, ENERGY SAVING AND SUITABLE FOR IMPROVEMENT FROM EXISTING PICKLING TANK

INTRODUCTION OF i BOX PICKLING TECHNOLOGY – HIGH PICKLING PERFORMANCE FOR DIFFICULT-TODESCALE MATERIAL, ENERGY SAVING AND SUITABLE FOR IMPROVEMENT FROM EXISTING PICKLING TANK

Authorship

Taniguchi, Nobuyuki; Sasaki, Akihiko; Tsuji, Kosei; Nakatsuka., Ryusuke

Taniguchi, Nobuyuki

I am this author

Sasaki, Akihiko

I am this author

Tsuji, Kosei

I am this author

Nakatsuka., Ryusuke

I am this author

DOI

10.5151/2594-5297-22609

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Abstract

To meet the ever increasing demand of international steel manufacturers for energy saving, compact and high performance pickling system capable for increasing the production of difficult-to-descale strip, various new products e.g. ultra-low carbon steel, high strength steel, electrical silicon steel, has appeared on the market in recent years. In addition, energy saving has been demanded not only by steel manufacturers but also general society. Mitsubishi-Hitachi Metals Machinery Inc., (MH) developed and is distributing i Box (Immersed Box) pickling tanks to the market, which has even similar high pickling performance by the box turbulence effect. This pickling technology doesn’t require continuous acid circulation by electric motor driven pumps as the other circulation type and can save steam consumption by unique designed tank covers. As a result, electrical energy in the pickling tank area is saved by approx. 80% ,and the heating loss from the pickling system is saved by 24% compared with the continuous acid circulation type pickling system of similar production capacity. Since this i Box can be modified from customers’ existing Deep type pickling tank with reusing the existing pickling tank itself, our customer can reduce the shut down term to modify to high performance pickling tank and increasing the line productivity easier. In this paper, MH introduces the i Box pickling technology based on the pickling theory, and the references of the applications to the actual product lines.

To meet the ever increasing demand of international steel manufacturers for energy saving, compact and high performance pickling system capable for increasing the production of difficult-to-descale strip, various new products e.g. ultra-low carbon steel, high strength steel, electrical silicon steel, has appeared on the market in recent years. In addition, energy saving has been demanded not only by steel manufacturers but also general society. Mitsubishi-Hitachi Metals Machinery Inc., (MH) developed and is distributing i Box (Immersed Box) pickling tanks to the market, which has even similar high pickling performance by the box turbulence effect. This pickling technology doesn’t require continuous acid circulation by electric motor driven pumps as the other circulation type and can save steam consumption by unique designed tank covers. As a result, electrical energy in the pickling tank area is saved by approx. 80% ,and the heating loss from the pickling system is saved by 24% compared with the continuous acid circulation type pickling system of similar production capacity. Since this i Box can be modified from customers’ existing Deep type pickling tank with reusing the existing pickling tank itself, our customer can reduce the shut down term to modify to high performance pickling tank and increasing the line productivity easier. In this paper, MH introduces the i Box pickling technology based on the pickling theory, and the references of the applications to the actual product lines.

Keywords

i Box; High pickling performance; Energy saving; Difficult-to-descale.

i Box; High pickling performance; Energy saving; Difficult-to-descale.