chinese technology for hydrochloric acid heating in cold roll mill pickling line

EMISSIONS OF HYDROCHLORIC ACID VAPORS GENERATED BY PICKLING ...

BY PICKLING PROCESS FROM COLD ROLLING MILL OF STEEL STRIPS Anisoara CIOCAN “Dunarea de Jos” University of Galati, 111, Domnească Street, 800201, Galaţi, Romania e-mail: [email protected] ABSTRACT The most important pollutant emitted in the sector of pickling within a cold strip mill in an integrated steel mill are the hydrochloric acid vapors.

China Low Consumption Acid Pickling Production Line/Pickle ...

trough → four-grade hydrochloric acid pickling trough → four-grade washing trough (Including pre-washing section) → edge blowing device → hot air dryer → II# pinch roller → looper (Both ends are equipped with looper swing stand) → vertical guide roller → pinch centering machine → circle shearer (With waste edge recoiler) → 3-roller

Chinese Technology For Hydrochloric Acid Heating In Cold Roll Mill Pickling Line - Video Results

More Chinese Technology For Hydrochloric Acid Heating In Cold Roll Mill Pickling Line videos

Acid Concentration Control for Pickling Line of Cold Rolling ...

Jan 01, 2015 · So the pi kling process, where the steel strip passes through th hydrochloric acid solution, is utilized to remove the scale before the cold rolling. The pickling line usually consists of 4 pickling tanks filled with the hydrochloric acid solution, which overflows to the counter direction of steel movement as Fig.1.

TURBULENCE PICKLING LINES FOR CARBON STEEL

China Shougang Corporation – pickling line/tandem cold mill 22-23 Tianjin Tiantie – pickling line/tandem cold mill 24-25 Salzgitter Flachstahl – continuous pickling line with acid regeneration 26-27 Tokyo Steel – continuous pickling line with acid regeneration 28-29 Gazi Metals Mamülleri – semi-continuous pickling line 30-31

China Stainless Steel Carbon Steel Galvanizing Line Pickling ...

Cold Rolling Mill, Used 4hi Reversible Cold Rolling Mill, 4hi Reversible Cold Rolling Mill manufacturer / supplier in China, offering Stainless Steel Carbon Steel Galvanizing Line Pickling Line, 650-1450 Push Pull Pickle Line/Pickling Line/Hydrochloric Acid Line, Professional Rolling Mill Push Pull Pickling Line and so on.

China Multiple Stand Tandem Rolling Mills - China Steel ...

Steel Rolling Mill, 3 Continuous Rolling Mill, Continuous Steel Rolling Mill manufacturer / supplier in China, offering Multiple Stand Tandem Rolling Mills, 650-1450 Push Pull Pickling Line/Hydrochloric Acid Line/Shot Blast Pickling Line, Customized 1450 Color Coating Line (CCL) and so on.

Primetals Technologies to supply copper foil reversing mill ...

1 day ago · The rolling line is composed of cluster mills (X-Mill) specifically designed to roll foils of non-ferrous materials, ensuring a stable and highly efficient production. Start-up is expected in 2022. NC, headquartered in Yuncheng, Shanxi Province, China, is active in mining, smelting, and processing copper.

The Pickling Process

The heart of the Pickling Line, its acid baths, consists of four tanks in a row containing hydrochloric acid in concentrations ranging from 2% to 10% at temperatures held between 180 and 200 degrees Fahrenheit. Chemical inhibitors are added to discourage the acid from attacking the steel beneath the scale (the ‘base metal’).

Why do we use 15-18% HCl for pickling

May 17, 2008 · I am a trainee Engineer at a cold-rolling complex and looking after commissioning activities at Push-Pull Pickling line of the mill. My pickling line will soon enter into its production phase. 18% HCl will be used for pickling steel strips. I am keen to know what are the factors that effect the pickling time? I.e., the optimum time for which a ...

Steel Pickling: The Essential Guide | MachineMfg

The hydrochloric acid pickling iron loss is 0.4% to 0.5% of the acid pickling strip, and sulfuric acid is 0.6% to 0.7%. The hydrochloric acid pickling rate is higher, which is 2 times the sulfuric acid pickling rate. In recent years, due to the development of hydrochloric acid waste acid recovery and treatment technology (that is, the ...

ARP-Acid Regeneration Plant - chinaprc.cn

ARP-Acid Regeneration Plant. HCl Regeneration Systems or Acid Regeneration Plant (ARP) work together with pickling lines. By spray roasting method, waste pickle liquor(WPL) from pickling line is converted to ferric oxide(Fe 2 O 3)and gaseous hydrogen chloride(HCl), which would be absorbed by rinsing water from pickling line, thus hydrochloric acid of18%(wt) produced.

Manufacturing process of cold rolled steel pipe - China Steel ...

The pickling method is used for removing the oxide scale on the surface of cold drawn and cold roll steel pipes. Pickling methods include sulfuric acid pickling, hydrochloric acid pickling, mixed acid pickling, hydrofluoric acid pickling and alkali-acid pickling. Sulfuric acid pickling is one of the most widely used methods.

Pickling Line & ARP Process | EARNEST GLOBALISATION ...

The heart of the Pickling Line, its acid baths, consists of four tanks in a row containing hydrochloric acid in concentrations ranging from 4% to 18% at temperatures held between 80 and 90 degrees Celsius. Chemical inhibitors are added to discourage the acid from attacking the steel beneath the scale (the ‘base metal’).

China Second Hand Steel Making Mill Plant /Machine Plant ...

Pickling method: shallow turbulent pickling medium: hydrochloric acid (> 31%) 1400 mm 12-high cold rolling mill 2 sets Material:Carbon Steel; Max Coil Weight of 25 000 kg Strip thickness: 0.15-4.0 mm; strip width: 900-1250 mm Thread-through speed: 180 m/min; unit line speed: 600 m/min

Pickling - an overview | ScienceDirect Topics

Acid pickling This can be done under the following operating conditions, either with sulphuric acid (H 2 SO 4), or hydrochloric acid (HCl). H 2 SO 4 releases a lot of fumes and is ineffective under cold conditions. It forms iron sulphate, which forms a hard deposit at the bottom of the tank and is difficult to remove (see table on next page).

A new speed optimization algorithm with application in ...

application in pickling and rolling line Xiaoyan Zhu1, Li Wang1, Dianhua Zhang1 and Qiaohui Jiao2 Abstract In order to reduce equipment wear and operator pressure, as well as to improve the production efficiency of combined continuous pickling line and tandem cold rolling mill units, four sections’ speeds should be automatically optimized to

The Whys and Hows of Hydrochloric Acid Pickling

In the early 1960’s a major change in high speed pickling technology took place- the introduction of hydrochloric (muriatic) acid pickling. Some specialty picklers had used hydrochloric acid previously, especially if a high quality surface was needed, but the expense, corrosiveness and fuming problems made this acid unattractive.

Research Article DNN-Based ADNMPC of an Industrial Pickling ...

irradiation acid pickling solution for pickling metal plates and strips. However, a recent pickling process using indus-trial microwave heating devices (IMHD) was developed for heating mixed acid (nitric acid and hydro uoric acid) solution for pickling titanium plates and strips. Microwave powers generated by many magnetrons feed into the IMHD

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CGThermal. Ceramic. Graphite . Heat Exchangers. Process Equipment. Pickling Basics . Con’t. The heart of the Pickling Line, its acid baths, consists of four tanks in a row containing hydrochloric acid in concentrations ranging from 2% to 10% at temperatures held between 180 and 200 degrees Fahrenheit.

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