친환경 소재 철, 지속가능한 미래를 연다

김용한 본지 기자. 성균관대 과학수사학과 석사과정.

인류의 시대를 구분하는 여러 방법 가운데 인류가 사용하는 소재를 중심으 로 본다면 인류는 아직 철기시대를 살고 있다고 할 수 있다.

인류의 역사 속에서 철이 처음으로 등장한 기원전 3000년경까지 거슬러 올 라가면 철은 5,000년의 역사를 인류와 함께 하고 있으며 각종 신소재가 등장 하고 있는 오늘날에도 가장 중요한 금속 소재로 활용되고 있다.

이는 철이 사용수명이 길고 재활용률이 높은 친환경 소재이기 때문인데, 시드니 올림픽 주경기장인 ‘스타디움 오스트레일리아’를 비롯해 세계의 유 명한 친환경 건축물 대부분이 철을 주재료로 한 강구조를 적용한 이유가 여 기에 있다.

가장 가성비가 높은 소재 … 환경파괴량도 적어

철의 친환경적인 부분은 금과 비교할 때 더욱 명확해진다. 금을 추출하기 위해서는 금광석을 채굴해야 하는데, 톤당 3g(0.0003%) 정도의 금을 함유해 야 경제성이 확보된다.

보통 돌반지 1돈이 3.75g이니 어린아이의 손가락에 금반지 1돈을 끼워주 기 위해 1톤의 광석을 채굴해야 한다는 얘기다. 하지만 철은 1톤을 채굴할 경우 약 600kg의 철광석을 확보할 수 있다. 즉, 철광석 1톤당 약 60%의 철이 함유되어 있는 것이다.

다른 금속들의 경우에도 광석 1톤당 금속의 함유량은 알루미늄이 13%, 아 연이 5%, 구리가 0.8% 수준에 불과하다. 따라서 같은 질량을 얻기 위해 채굴 부터 제품 가공까지 모든 공정을 거칠 경우 다른 금속들에 비해 경제성이 높 고 환경 훼손이 적다는 것을 알 수 있다.

현대제철 당진제철소 밀폐형 원료저장시설

높은 ‘재활용률’… 지속 발전 위한 필수 소재

철은 다른 소재에 비해 불순물이 적고, 원래의 특성과 품질을 유지하면서도 계속해서 재활용할 수 있는 특성을 가지고 있다.

지난 2017년 WSA가 발표한 자료에 따르면 알루미늄, 마그네슘과 같은 다 른 소재들은 재활용률이 40~80% 수준인데 비해 철의 재활용률은 97.6%에 달하며 매년 6억톤의 철스크랩이 재사용되고 있다.

철을 재활용해 다른 용도의 철을 만들게 되면 새로 철을 생산하는 것에 비 해 이산화탄소는 82%, 질소산화물은 88.9%, 황산화물은 94.7%의 발생량이 감소한다. 따라서 철은 인류가 지속 발전 가능한 사회를 만드는데 가장 적합 한 소재라고 할 수 있다.

철은 반영구적 재료

철은 가성비가 높아 생산성과 효율성, 경제성이 탁월하고 탄탄한 구조설계 가 가능해 안전하며 사용수명 역시 길다. 게다가 건물이 해체되면 철스크랩으로 회수돼 ‘생산-소비-회수-재생산’의 과정을 거쳐 철로 재활용되니 효용성 측면에서도 따라올 소재가 없다.

건축물의 수명이 일반적으로 100년 이상이고 40여 차례 재활용된다고 하 면 철은 무려 4,000년 이후에도 재활용이 가능하다는 산술적인 계산이 가능 하다. 이것이 바로 철을 ‘반영구적 소재’라 칭하는 이유다.

현대제철 페로팔트 포설작업

국내 철강업계 활발한 친환경경영 펼쳐

현대제철, 포스코 등 국내 철강업계는 인류사회의 소중한 자원인 철을 이 용해 자동차, 조선, 가전, 기계, 건설을 비롯한 모든 산업의 기초가 되는 철 강제품을 공급하고 있으며, 환경에 대한 책임과 지속가능한 발전에 대한 기 여가 기업발전의 원동력이라는 사실을 깊이 인식하고 친환경 경영에 주력하 고 있다.

현대제철은 당진제철소에 세계 최초로 ‘밀폐형 원료처리시설’을 도입했는 데, 이 시설은 선박에서부터 원료처리시설까지 밀폐형 연속식 하역기와 벨트 컨베이어를 이용해 철광석과 유연탄을 운송함으로써 바람이 심한 임해 제철 소의 비산먼지 문제를 획기적으로 절감시켰다.

또한 지난 2015년 10월에는 국내 최초로 전기로 슬래그를 이용한 고내구 성 친환경 도로포장재인 ‘페로팔트(FerroPhalt)’ 개발에 성공해 전기로 슬래 그의 활용도를 넓혔다는 평가를 받고 있다.

포스코도 철강제품을 생산할 때 발생하는 비산먼지 저감 시설에 투자를 확 대하고 있다. 현재 179만톤 규모의 33개 옥내 저장시설을 운영 중이며 향후 밀폐식 구조물인 사일로 8기(40만t)를 더 짓는 등 옥내저장시설 10기를 추가 로 설치한다는 계획이다.

– 김용한

지구와에너지
(사)한반도평화에너지센터가 발행하는 신개념의 컨설팅형 입법정책 계간지 매거진 '지구와에너지' 입니다.

130 thoughts on “친환경 소재 철, 지속가능한 미래를 연다

  1. Heya i’m for the first time here. I came across this board and I find
    It really useful & it helped me out much. I hope to
    give something back and help others like you aided me.

    asmr 0mniartist

  2. Hello to every body, it’s my first visit of this website; this
    website carries awesome and in fact excellent information in support of readers.

    0mniartist asmr

  3. Pretty great post. I just stumbled upon your weblog
    and wanted to say that I’ve truly loved browsing your blog posts.
    In any case I will be subscribing for your feed and I hope you write once more very soon!

  4. Hello there, I found your blog via Google whilst looking for a
    similar subject, your website came up, it appears great.
    I’ve bookmarked it in my google bookmarks.
    Hi there, simply was alert to your blog through Google, and located that it’s truly informative.

    I’m gonna be careful for brussels. I’ll be grateful if you happen to
    proceed this in future. Numerous folks will be benefited
    from your writing. Cheers!

  5. Hello I am so glad I found your blog, I really found you by accident, while I was looking on Google for something else,
    Nonetheless I am here now and would just like to say cheers for a incredible post and
    a all round interesting blog (I also love the theme/design), I don’t have time to read it all at the moment but I have bookmarked
    it and also added your RSS feeds, so when I have time I will be back to
    read a lot more, Please do keep up the excellent jo.

  6. Hey there! This is kind of off topic but I need some advice from an established blog.
    Is it difficult to set up your own blog? I’m not
    very techincal but I can figure things out pretty fast.
    I’m thinking about setting up my own but I’m not sure where to start.
    Do you have any points or suggestions? Thank you

  7. Very nice post. I simply stumbled upon your blog and wanted to mention that I have really loved
    browsing your weblog posts. In any case I’ll be subscribing to your feed and I’m hoping you write once more very soon!

  8. My spouse and I absolutely love your blog and find most of your post’s to be what precisely I’m looking
    for. Would you offer guest writers to write content for you personally?
    I wouldn’t mind creating a post or elaborating
    on a number of the subjects you write related to here.
    Again, awesome website!

  9. scoliosis
    Hello, i think that i saw you visited my site so i got here to go back
    the choose?.I’m trying to find things to enhance my website!I assume its ok to
    use some of your ideas!! scoliosis

  10. scoliosis
    Hi there would you mind letting me know which webhost you’re using?
    I’ve loaded your blog in 3 completely different browsers and I must say this blog loads a lot
    quicker then most. Can you suggest a good hosting provider at a reasonable price?
    Thanks, I appreciate it! scoliosis

  11. Hi, i read your blog occasionally and i
    own a similar one and i was just curious if you get a lot of
    spam feedback? If so how do you protect against it, any plugin or anything
    you can advise? I get so much lately it’s driving me insane so any assistance is very much appreciated.

  12. Definitely imagine that which you said. Your favourite justification appeared to be at
    the net the simplest thing to take into account of.
    I say to you, I certainly get annoyed even as other people consider issues that
    they just do not recognize about. You controlled to hit the nail upon the
    top and outlined out the whole thing without having side-effects
    , folks could take a signal. Will likely be again to get more.
    Thank you

  13. Excellent pieces. Keep posting such kind of info on your site.
    Im really impressed by your blog.
    Hi there, You’ve performed a great job. I will certainly digg it and in my view recommend to my
    friends. I’m confident they’ll be benefited from this site.

  14. After going over a few of the blog articles on your website,
    I truly appreciate your technique of blogging. I book-marked it to my bookmark webpage list
    and will be checking back in the near future. Please visit
    my website too and tell me your opinion.

  15. The other day, while I was at work, my cousin stole my iphone and tested to see
    if it can survive a thirty foot drop, just so she can be a youtube sensation. My apple ipad is now broken and she has 83 views.

    I know this is completely off topic but
    I had to share it with someone!

  16. I know this if off topic but I’m looking into starting my
    own blog and was wondering what all is needed to get setup?
    I’m assuming having a blog like yours would cost a pretty penny?
    I’m not very internet smart so I’m not 100% certain. Any tips or advice would be greatly appreciated.
    Cheers

  17. Definitely believe that which you stated. Your favorite
    justification seemed to be on the internet the simplest thing to be aware of.
    I say to you, I certainly get irked while people think about worries that they just do not know about.
    You managed to hit the nail upon the top as well as defined out the whole thing without
    having side effect , people can take a signal.
    Will likely be back to get more. Thanks

  18. Hey would you mind letting me know which web host you’re working with?
    I’ve loaded your blog in 3 different browsers and I must say
    this blog loads a lot quicker then most. Can you recommend a good internet hosting provider at a fair price?
    Thank you, I appreciate it!

  19. Having read this I thought it was extremely enlightening.

    I appreciate you finding the time and energy to put this informative
    article together. I once again find myself spending way too much time both reading and leaving comments.

    But so what, it was still worthwhile!

  20. Great beat ! I would like to apprentice at the same time as you amend your website,
    how can i subscribe for a blog website? The account helped me a acceptable deal.
    I have been a little bit familiar of this your broadcast provided bright clear idea

  21. Howdy very cool site!! Guy .. Excellent .. Superb .. I’ll bookmark your blog and take the feeds
    additionally?I am happy to search out numerous helpful info here
    within the post, we want work out extra techniques on this
    regard, thank you for sharing.

    Take a look at my web page; Skyline Drone X

  22. My partner and i still can’t quite assume
    that I could become one of those studying the important recommendations found on your
    web blog. My family and I are sincerely thankful for the generosity and for offering me
    the chance to pursue our chosen career path. Appreciate your sharing
    the important information I managed to get from your web site.

    Also visit my webpage; Crypto Bank App Review

  23. Its like you read my mind! You seem to know so much about this, like you wrote the
    book in it or something. I think that you could do with a few pics to
    drive the message home a bit, but instead of that, this is wonderful blog.
    A fantastic read. I’ll definitely be back.

    Here is my page: Dermicell Skin Tag Remover (clubriders.men)

  24. I love your blog.. very nice colors & theme. Did you design this website yourself or did you hire someone to do it for you?
    Plz reply as I’m looking to create my own blog and would like to know where u got this from.
    thank you

  25. Hi! I know this is kinda off topic however , I’d figured I’d ask.

    Would you be interested in exchanging links
    or maybe guest authoring a blog article or vice-versa? My website discusses a lot of
    the same subjects as yours and I believe we could greatly benefit from each other.
    If you happen to be interested feel free to shoot me an e-mail.
    I look forward to hearing from you! Superb blog by the way!

    Have a look at my web site – https://mpc-install.com

  26. My partner and I absolutely love your blog and find almost all of your post’s to be exactly I’m
    looking for. can you offer guest writers to write content for you?

    I wouldn’t mind producing a post or elaborating on a lot of the subjects you
    write related to here. Again, awesome blog!

    Feel free to surf to my website – https://theocratic.net

  27. Please let me know if you’re looking for a article writer for your weblog.

    You have some really good articles and I think I would be a good asset.
    If you ever want to take some of the load off, I’d absolutely love to write some articles for your blog in exchange for
    a link back to mine. Please blast me an e-mail if interested.
    Thanks!

    My blog rollex11 apk ios download (mega888sg.com)

  28. hey there and thank you for your info ? I?ve
    definitely picked up anything new from right here. I did however expertise a few technical points using this
    website, since I experienced to reload the website lots of times previous to I could get it to load correctly.
    I had been wondering if your web hosting is OK? Not that I’m complaining, but sluggish loading instances
    times will sometimes affect your placement in google and could damage your high quality score
    if advertising and marketing with Adwords. Anyway I am adding this RSS to my email and can look out
    for much more of your respective fascinating content. Make sure you update this again very soon..

    Here is my web site Elite Burn Keto Diet

  29. Thank you so much for providing individuals with such a
    terrific chance to read in detail from here. It can be very kind
    and as well , full of fun for me and my office colleagues to visit your blog at minimum three times per week to see the
    fresh guides you have got. Of course, I’m so actually fascinated with the mind-blowing
    thoughts you serve. Certain 4 ideas in this post are absolutely the most beneficial we have all
    had.

  30. We are a gaggle of volunteers and opening a new scheme in our community.
    Your web site provided us with helpful information to work on. You have done an impressive job and our entire
    neighborhood will probably be thankful to you.

  31. I’ve been exploring for a little bit for any high-quality articles or weblog posts in this kind of house .

    Exploring in Yahoo I finally stumbled upon this web site.
    Studying this information So i’m satisfied to express that
    I’ve an incredibly good uncanny feeling I discovered exactly what I needed.
    I most surely will make certain to do not omit this
    site and give it a glance regularly.

    my web-site: Cognifen Reviews

  32. I believe what you published made a lot of sense. But, what about this?
    what if you typed a catchier post title?
    I mean, I don’t want to tell you how to run your blog, but suppose
    you added a headline to possibly get folk’s attention?
    I mean 친환경 소재 철, 지속가능한 미래를 연다 –
    지구와에너지 is a little boring. You could glance at Yahoo’s
    front page and note how they write article titles
    to grab viewers to click. You might add a
    related video or a related pic or two to get people
    excited about everything’ve got to say. In my opinion, it could make your blog a little bit more interesting.

    Here is my web site – Cleaner Smile Teeth Whitening Reviews

  33. Undeniably believe that which you stated.
    Your favorite justification appeared to be at the net the simplest thing to be
    mindful of. I say to you, I definitely get irked whilst people think about worries that they plainly do not recognise about.
    You managed to hit the nail upon the top as well as defined out the entire thing
    with no need side-effects , other folks could take a signal.

    Will probably be again to get more. Thanks

    Also visit my web blog; http://www.vstromturkiye.com

  34. We are a group of volunteers and starting a new scheme in our community.
    Your web site provided us with valuable information to work on. You have done a
    formidable job and our whole community will be grateful to you.

    Look into my web page – Profit Edge

  35. Thank you for your site post. Thomas and I are saving for just a new publication on this subject matter
    and your blog post has made us to save all of our money. Your thinking really answered
    all our issues. In fact, above what we had acknowledged just before we found your great blog.

    My partner and i no longer nurture doubts along with a troubled mind because you have attended to each of our needs
    right here. Thanks

    Here is my web site Zenzi CBD Gummies

  36. Its like you read my mind! You appear to know a lot about this, like you
    wrote the book in it or something. I think that you could do with some pics to drive the message home a
    little bit, but instead of that, this is excellent blog.
    A great read. I’ll definitely be back.

    My web blog … Sage Elixir

  37. We are a gaggle of volunteers and starting a brand new scheme in our community.
    Your web site provided us with helpful info to work on. You’ve done an impressive task and
    our whole neighborhood shall be thankful to you.

    My blog post Cinagra Rx [Nam]

  38. Hi mates, how is the whole thing, and what you would
    like to say about this article, in my view its genuinely remarkable in favor of
    me.

    Also visit my homepage; Bodycor Keto Review (Wiley)

댓글 남기기