Primetals Technologies supplied fifth Arvedi Endless Strip Production plant produced the first coil at the Chinese steel producer Rizhao Steel Co Ltd In late November 2020. The casting and rolling plant will produce 2.2 million tonnes of high quality, ultra thin hot strip with thicknesses of down to 0.6 millimetres and widths of up to 1,300 millimetres. The product portfolio ranges from carbon steel to high strength low alloyed grades.
Primetals Technologies was responsible for the engineering of the Arvedi ESP plant and supplied the mechanical equipment, the media systems, technology packages and the automation technology. The casting and rolling lines are controlled by means of consistent and integrated basic level 1 and process automation level 2. This ensures a precisely coordinated interaction of the casting and rolling process.
In order to increase production capacity beyond the originally planned value, the Arvedi ESP plant was reengineered by increasing the number of caster segments and thus the caster length during the on going project. The new Mold Expert with fiber optic temperature measurement ensures higher resolution measurements for enhanced process control. New features are implemented to match highest cold rolling standards without subsequent processing steps. ABP Induction, a group company of Mitsubishi Heavy Industries, supplied a highly efficient transversal flux inductive heating system, which is installed upstream of the finishing mill.
The Arvedi ESP produces hot strip directly from liquid steel in a continuous and uninterrupted production process in a linked casting and rolling plant. In this type of plant the power consumption and the related costs are up to 45% less than in the case of a conventional plant with separate casting and rolling processes. It also means a significant reduction of CO2 emissions. Furthermore, with a length of only 162 meters, the dimensions of the Arvedi ESP plant 5 at Rizhao Steel is clearly more compact than those of conventional casting and rolling plants.
Rizhao Steel is located around 30 kilometers outside of the port of Rizhao in the south of Shandong province. The company has a production capacity of approximately 15 million tonnes of crude steel. Rizhao Steel's product portfolio includes hot rolled coils, wire rods and small dimensioned I-beams,