Valued steel strip pickling line

1.5mm~3.0mm*650mm 310,000t/year

To achieve the highest strip cleanliness and high surface quality with a reliable and cost-efficient process Primetals Technologies offers modular continuous and Push-Pull Pickling Lines. They are supplied with compact Scale Breakers and customers have the choice of different pickling concepts (i Box, turbulent shallow or flat tanks).

Main Benefits

Broad range of pickling technology available to cope with customer expectation
Modular design to optimize operation and maintenance practices and cost
High efficient pickling rates to achieve a surface clean and free of scale
Special anti-stain system that does not require chemical additives
Energy efficient design of the fume extraction and sealing system

Coil Pickling is a process in which any surface scale or rust on the steel is removed to leave a clean substrate. It is only used for hot strip mill products.There are a number of steel pickling processes. JJRS operates a modern push/pull shallow bath hydrochloric acid line. Steel coils are unwound in a very similar way to decoiling and enter the fully enclosed continuous pickling line. Before being fed into the pickling tanks, the strip passes through a levelling head which lightly removes the parent coil shape. A hot water rinse then washes any general dirt from the surface and the material enters three continuous in-line tanks. The three tanks, which consist of a steel outer shell with a heavy granite liner, contain different concentrations of heated hydrochloric acid.

The acid removes iron oxide (rust and scale) which is adhered to the steel surface, following which the material passes through a rinse section, a dryer and is then lightly oiled before being recoiled. As you might imagine this is a highly automated and controlled process which requires continuous monitoring. Once recoiled, the steel can be delivered or receive further processing such as slitting, decoiling or tension levelling.