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Mill Scale Uses and Applications
++
My company uses iron ore (magnetite) in its process. However, a large amount of mill scale has become available and we are looking at it as a substitute or supplement. What is the basic composition of mill scale and the difference between it and magnetite and black iron oxide? Can mill scale be used in place of magnetite or black iron oxide?
Fred S [last name deleted for privacy by Editor]- Charlotte, North Carolina
++Maybe. But with zilch info on what sort of process, there's no way anybody can answer. None of us is a mind reader :-)
Bill Reynolds
consultant metallurgist
Ballarat, Victoria, Australia
It is this website's profoundly sad
duty to relate the news that Bill
passed away on Jan. 29, 2010.
++Please answer me these question ! I need help !
Arash M [last name deleted for privacy by Editor]
- Iran
++Hi, Arash. People need some details of your intended application to hazard a guess.
Mill scale is the hardened, oxidized, surface that develops on steel as it is hot processed. It contains iron and oxidized iron and probably undefined contaminants like oils and carbonates. Putting this stuff into an unknown "process" might work excellently, or poorly, or fail completely -- or the large surface area might cause a reaction to proceed so quickly that it explodes and kills people. Let the readers know what the "process" is. Thanks.
Ted Mooney, P.E.
finishing.com
Brick, New Jersey
++++
Would it be possible to use iron mill scale with 98% content of Fe2O3 as raw material for making magnets.
Edward Gantz- Birmingham, England
March 3, 2008Our factory mixes a little per cent of mill scale into iron ore fines before they are sintered so that we could get a higher grade of FE content.
Charles Yu
- Qingdao, Shandong, China
++++++
I would like to know more about the uses for mill scale. Also if the product is useful in industry what is the price tag on mill scale?
Chris Scheeperstrader - Richards Bay, South Africa
+++++++Well I used to use about about 1,000 tons per year. It was used in a ferro-cement mix and poured into a polyethylene shell. These were sold as wheel weights for lawn and garden tractor wheels for extra weight for traction. Weights were 20-75 lbs.
Paul Rybak
- Topton, North Carolina
+++++++
We are exploring the use of mill scale (small percentage) in our Pellet Plant coming up in India. We are beneficiating Iron Ore fines bearing Fe 56% to 300-325 mesh and then using a series of hydro-cyclones to bring the Fe up to 64%. I would like to explore the use of mill scale in crushed form (325 mesh/44 microns) for: 1. upgrading by green ball Fe content & 2. increase the quality of finished pellets in terms of reduction.
Any suggestions / opinions / advice is solicited.
- Kolkata, WB, India
April 15, 2009
Hi Everybody,
I would like to know what are industries that uses iron mill scale as raw materials? What are the industrial uses of Iron Mill Scale? Can any of you help me?
exporter - Coimbatore, India
October 16, 2009
Hi to all of the readers
I just wanted to have a solution about mill scale that how can I remove SiO2 from mill scale.
Thanks
exporter - Karachi,Pakistan
November 10, 2009
dear sir,
please tell me about iron oxide scale and how to leach it in acidic solution or use it in another application.
My company is a beam and rod rolling mill ,
thanks a lot.
- ahwaz, khuzestan, Iran
January 9, 2010
I have a proposal to compact Mill scale (fe 60% to 70%) from Steel Mills by briquetting it.The briquettes to be used along with heavy melting scrap in electric arc furnaces. There are briquetting machines available in the world market having a capacity to make 30 to 100 mts per hr of briquettes. The bonding used is Sodium Silicate and hydrated lime. I shall be grateful if you could advise if this method of recycling of Mill scale would be beneficial to steel making in the electric arc furnaces. The costs benefits are considerable given the demand and high prices for heavy melting scrap.Thanks for your time
regards
Seshadri
- Mumbai, India
July 31, 2010I know of a company in Australia called Austpac Resources that has a process for recycling mill into briquettes. Do a search on the web.
RegardsColin Costello
- sydney australia
January 25, 2010
Is it possible to use mill scale as the feed in sponge iron production?
Tahsin Rahman- Dhaka, Bangladesh
September 4, 2010
is the form of iron oxide in mill scale suitable for the adsorbtion of phosphates from water? Does anybody know whether mill scale is ever used in this way?
Jerome Davis- Cape Town, South Africa
December 31, 2010
Dear sir
I'm working in one of the alloy production company, since we started the production of LOW CARBON FERRO CHROME. For this we have taken CHROME ORE, AL POWDER, SODIUM NITRATE & MILL SCALE.
I want to know the main usage of MILL SCALE in this chemical combination, that why we have to use MILL SCALE. Please clear my doubt
employee - Vizag, AP, India
March 13, 2011
do we rally need magnetite to grind mill scale to 325 mesh?
ASHISH AGARWAL- raipur, india
March 28, 2011
I own a rolling plant producing structure angles and channels. It generates about 100 tonnes of mill scale per month. Is there some kind of technology that can convert mill scale back to pure Fe which can be melted in blast furnaces to produce ingots and billets. Also, can mill scale be directly melted to produce pure iron. I Would be more than happy to give more information if required.
warm regards,
Abhinav
- Delhi, India
May 19, 2011
Is it possible to produce iron powder from mill scale?
For example, at first we can powder mill scale and then using a gas like CO, reduce the powder to iron powder?
- Ahvaz, Iran
October 21, 2011
Dear sir
I just want to know how I remove and reduce SiO in mill scale composition. Thanks.
Student - Karachi, Pakistan
November 16, 2011
Mill scale is the result of an oxidizing layer of steel products as it is processed in a rolling mill. It is collected with coolant and lubricating oils and normally held in a collection tank/pond. During its mixture with the liquids the steel scale will oxidize further until it reverts to iron oxide (Fe2O3). If the scale is collected and dried right away some will be in the form of Fe, FeO, Fe3O4, Fe2O3 and the total Fe content could be as high as 99% or whatever level the steel products are at the mill. The size of the mill scale will be from dust size in microns up to normally 6 mm, perhaps longer as it is scale it will flake off the steel.
Processes exist to recover and use the mill scale as well as all other iron/Fe bearing materials wastes in steel mills and use it directly in a furnace to make new steel.
- Estacada, Oregon, USA