water scale pit steel rolling mill

Nordic steel mill solution reduces water treatment costs

 · In steel production, hot milling and casting uses water at rates of between 100 cubic meters per hour and 10,000 cubic meters per hour, depending on the scale of the operation. As steel leaves the casting operations, cooling and cutting with water produces mill scale (iron oxides).

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scale pit in steel rolling mill

Walthers - Rolling Mill - Ashland Iron & Steel… 90t/h wire rod and rebar mill (see Fig.1). The new water This new technology is scalable to other parts of the steel process decrease the wear life of the rolling mill equipment, the water enters the scale pit, the

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What is mill scale?

Mill scale is formed on the outer surfaces of plates, sheets or profiles when they are being produced by rolling red hot iron or steel billets in rolling or steel mills. Mill scale is ...

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Prevention of Red Scale Formation during Hot Rolling of …

Thick scale formed during slab soaking wascompletely removedby hydraulic descaling before rolling in low Si steel, ... a water jet descaler, a 3 tandem rolling mill and a water spray. The maximum ...

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What is a Mill Scale?

Electrochemically, mill scale is cathodic compared to steel, so any kind of breakage in the scale could lead to accelerated corrosion in the steel at the point of breakage. Thus, the scale is considered an advantage for a short time until the coating cracks due to mechanical factors such as the handling of steel as well as other processes such as abrasive blasting, pickling and flame cleaning.

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SAFETY GUIDELINES FOR IRON & STEEL SECTOR

III. Rolling mill: To roll the hot crude steel products into desired shape by passing and squeezing it between set of revolving rolls. The rolls may be plain or grooved rolls depending on product. Rolling operation may contain one or more roll stands depending i.

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scale pit from steel mill

Water (scale) pit in steel rolling mill? Yahoo Answers 2010-1-3 the first pit is called the scale pit because the water also collects the free scale off the steel. this scale has to be collected and dealt to, usually settling in the pit. the ing height of the pit must be below the bottom of the HSM, so water and scale can be washed / flow into the pit, this means that the ing level of the pit ...

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(PDF) Development of a water treatment plant for a rolling …

rolling-mill train is 90 Tonnes/hour, and we estimate a formation of scale equal to 0.2% of the production total, the maximum amount of scale that the contact water will remove is 18 Kg/hour, with ...

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Removing Mill Scale from Steel Surfaces

Steel surfaces can sometimes exhibit residual mill scale as a side effect of the production process. Though not harmful in and of itself, the presence of scale is detrimental in conditions where corrosion is likely to occur, and it must be removed before a workpiece can be given a protective coating.

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Mill Scale – IspatGuru

Mill scale though has a high level content of iron (68 % -72 %) yet it is still considered as an industrial waste in the form of iron oxide mainly because it gets contaminated with water and oil during the process of rolling. Most of the mill scale in a steel plant is

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Water descaling unit for rolling mill

Water descaling unit for rolling mill In its program, Production and Engineering Company ENCE (ЭНЦЕ ГмбХ) highlights the most significant metallurgical equipment; this equipment complies with the highest international quality standards and may be offered to customers at competitive prices.

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Rolling of Steel in a Modern Long Product Rolling Mill – …

Rolling of Steel in a Modern Long Product Rolling Mill Long product is a common name for (i) reinforcement steel bars, (ii) shaped steel bar products such as rounds, flats, squares, and hexagon etc., (iii) sectional products such as angles (equal and unequal), channels, beams, tees, and special profiles etc., and (iv) wire rods.

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Water Requirements of the Iron and Steel Industry

WATER REQUIREMENTS OF SELECTED INDUSTRIES WATER REQUIREMENTS OF THE IRON AND STEEL INDUSTRIES By FAULKNER B. WALLING x and Louis E. OTTS, JR.2 ABSTRACT Twenty-nine steel plants surveyed during 1957 and 1958

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Steel and Manufacturing Industry Solutions Water and …

The scale pit is used to remove the larger scale and particulate, as well as to skim the oil from the water and is normally sized for 30–45 minutes of retention time. In some mills, this pit also receives wastewater from the hot roll and other miscellaneous processes throughout the mill.

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Scale formation and its removal in Hot Rolling process

Scale formation and its removal in Hot rolling Process Santosh Chacko, Suresh Vasani, A.K.Ray Lechler (India) Pvt. Ltd., Thane, India E-mail: [email protected] During hot rolling of steel, its surface is exposed to air which leads to oxidation, resulting in

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