Perfect steel strip pickling line for customer
2.0~4.5mm*1300mm 350,000t/year
Beijing JJRS Technology Development Co., Ltd. registered in
national high tech park-Beijing Economic and Technological
Development Zone, is high-tech enterprise specialized in the
complete set of metallurgical equipments, intensive processing of
steel strip and metal surface coating engineering project, with the
integration of mechanism, optics, electric and hydraulic pressure.
Steel pickling is part of the finishing process in the production
of certain steel products in which oxide and scale are removed from
the surface of strip steel, steel wire, and some other forms of
steel, by dissolution in acid. A solution of either hydrogen
chloride (HCl) or sulfuric acid is generally used to treat carbon
steel products, while a combination of hydrofluoric and nitric
acids is often used for stainless steel. Steel pickling and the
associated process of acid regeneration result in the emission of
hazardous air pollutants (HAPs). Currently, the U.S. Environmental
Most steel producers use either hydrochloric acid (in the carbon
steel industry) or HF-HNO3 mixed acid (for stainless steel) for
steel pickling. The waste acid produced can either be discharged
and neutralized – which results in high costs and a high fresh acid
demand – or regenerated.
With our acid regeneration technology, the entire loop is closed.
Waste acid coming from the pickling line is regenerated and then
used to fill the demand for fresh acid. Furthermore, the majority
of effluents from the pickling line can be eliminated, thus saving
costs for the entire pickling process and minimizing the
environmental impact.
The push-pull pickling line
Continuous Acid Pickling Line
Coil to Coil Pickling lines are a part of the finishing process of
flat rolled steel in which oxides and scale are removed from the
surface of the strip by dissolution in acid. Generally HCL is used
for carbon steel applications and hydrofluoric or nitric acids are
used for stainless steel.
Push-pull pickling lines primarily handle coils and do not have
welders at the entry sections nor storage areas for the strips.
Therefore, each coil is threaded through the process line
separately.
- The total annual working time::
| Item | Caculation | Time(h) |
| Daily working rate | | |
| Annual working time | - daysx 24h
| 8 760 |
| Scheduled repairs and roll changing | - daysx 24h
| |
| Available working time | Working time - maintenance time | |
| Availability | | |
| Performance and speed factor | | |
| Total annual working time | available working time * availability * performance and speed
factor | 7 586
|
