US 12,434,284 B2
Steel product processing plant with scale separation and recovery system
Antonio Nardella, Greve in Chianti (IT); and Nino Zanetti, Cavazzo Carnico (IT)
Assigned to DANIELI & C. OFFICINE MECCANICHE S.P.A., Buttrio (IT)
Appl. No. 18/712,611
Filed by DANIELI & C. OFFICINE MECCANICHE S.P.A., Buttrio (IT)
PCT Filed Nov. 22, 2022, PCT No. PCT/IB2022/061247
§ 371(c)(1), (2) Date May 22, 2024,
PCT Pub. No. WO2023/094976, PCT Pub. Date Jun. 1, 2023.
Claims priority of application No. 102021000029639 (IT), filed on Nov. 23, 2021.
Prior Publication US 2025/0010345 A1, Jan. 9, 2025
Int. Cl. B21B 1/46 (2006.01); B21B 1/22 (2006.01); B21B 45/02 (2006.01)
CPC B21B 1/463 (2013.01) [B21B 1/22 (2013.01); B21B 45/0293 (2013.01); B21B 2263/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A steel product processing plant, comprising at least one rolling mill provided with a plurality of stands arranged in series and suitable to progressively reduce the thickness of the product to be rolled in the advancement direction, and optionally a descaling machine and a continuous casting line arranged upstream of said rolling mill and of said descaling machine, wherein said plant is further provided with:
(a) at least one steel product direct cooling or cleaning system, or other system suitable to spray water on the product being processed;
(b) at least one system for separating mixtures, in particular mixtures of a muddy nature, comprising water and scale, deriving from said at least one steel product direct cooling or cleaning system, or from said other system suitable to spray water on the product being processed comprising:
(b-1) at least a first collection pit (F1) of the mixtures;
(b-2) at least a second collection pit (F2) of the mixtures;
wherein said pits (F1, F2) each have an overall depth <10 m, preferably <8 m, still more preferably <6.50 m; and
wherein said at least a first collection pit (F1) is fed with mixtures deriving from the casting or from said descaling machine and/or from one or more of the initial stands of the rolling mill and wherein said at least a second collection pit (F2) is fed by one or more groups formed by the remaining stands of the rolling mill,
wherein said first collection pit (F1) comprises:
(c) a dredging device, in particular a scraping conveyor.