Woolless
Member
- Location
- Berwickshire, Scottish Borders
Have you driven one? They are like excrement off a digging implement!
So much for the green revolution
- Thread starter bobk
- Start date
Then run out of leccy an hour later
Picture doing the rounds on t'internet of a bulldozer burying hundreds of wind turbine blades because they can't be recycled. Fake or not ?
www.bloomberg.com
Wind Turbine Blades Can’t Be Recycled, So They’re Piling Up in Landfills
Companies are searching for ways to deal with the tens of thousands of blades that have reached the end of their lives.
www.bloomberg.com
Frankzy
Member
- Location
- Jamtland, Sweden
Maybe this graphic explains better the missing link
HYBRIT JV planning to begin building demo plant for fossil-free steel in 2023
SSAB, LKAB and Vattenfall, the partners in the joint venture HYBRIT (earlier post), are preparing for the construction of a demonstration plant for the production of fossil-free steel on an industrial scale. Consultations have begun for deciding on placement of the plant in Norrbotten, Sweden...www.greencarcongress.com
Yes you have the sponge iron derived using hydrogen but that is not equivalent to blast furnace carbon steel. You talk of biomass injection into the EAF to produce the equivalent high grade carbon steel but no mention anywhere that this is actually being done. What is actually shown in the graphic is sponge iron being charged with recycled scrap to produce the equivalent of blast furnace carbon steel.
I do have a vested interest in the process as I produce torrified wood pellets using only solar energy which could be used to introduce carbon into the sponge iron in an EAF.
Well of course iron is not the same as steel.
And yes the graphic leaves out the biocoal but it also leaves out slag formers like Calcium, Dolomite, Limestone etc etc.. Just because a graphic aimed at the general populace doesn't include it doesn't mean it's not used.. How else would you get high carbon steel from sponge iron whose carbon content is essentially nill?
Not like you can get high carbon steel by only mixing scrap with sponge iron, with no other source of carbon you'd end up diluting the carbon contents so you simply have to add some carbon.
Scrap is probably just included to show that you can use both sources of metal in the same furnace. Hell, to my knowledge EAF's even wants a bit of scrap steel as a small first load to make starting the melt easier...
No, I explained in the previous post that the demonstration plant will be doing this on a commercial scale, it has already been done on a small experimental / pilot scale since 2019! There's no missing links!
farmerm
Member
- Location
- Shropshire
Will they be selling carbon credits for what they sequester in the steel...
farmerm
Member
- Location
- Shropshire
Picture doing the rounds on t'internet of a bulldozer burying hundreds of wind turbine blades because they can't be recycled. Fake or not ?
Wind Turbine Blades Can’t Be Recycled, So They’re Piling Up in Landfills
Companies are searching for ways to deal with the tens of thousands of blades that have reached the end of their lives.
What happens to all the old wind turbines?
Wind turbines don't last for ever, and they are difficult to recycle. The industry is trying to figure out what to do with them.
www.google.co.uk
Frankzy
Member
- Location
- Jamtland, Sweden
It's true.
Strictly speaking the wings can be recycled it's just that doing so is such a costly project that it's not really feasible.
Frankzy
Member
- Location
- Jamtland, Sweden
Shame you don't live here then. SSAB has been running a program for several years now where they've exchanged some of their blast furnaces' direct injection coal for biocoal.
Apparently the biggest problem they're having is finding enough biocoal since they'll burn through 10's of thousands tons of the stuff in no time...
Even at 2% which is a very high carbon steel it only contains 20kg per ton..
- Location
- The North
Your right it’s shocking more ‘green’ energy my arse…
A bank of exercise bikes hooked up to dynamos, being peddled by vegans...?I'm not worried, there are power companies that supply only Green Natural energy...........................yeh right..
renewablejohn
Member
- Location
- lancs
I would not supply torrefied wood as a substitute for coal in a blast furnace as its an inefficient use of a precious resource in the same way as I would not supply it for power generation in a coal fired plant when it can be used as a substitute for diesel. I would supply it for use in an EAF plant but as yet asfar as I am aware the technology does not make the quality of steel required but I am open to offers if someone wants thousands of tonnes of torrefied wood.
Frankzy
Member
- Location
- Jamtland, Sweden
Don't know how many times I have to say this but it's the same steel. Carbon is carbon, doesn't matter at all whether it is sourced from biocoal or coke!
At least it seems I finally got you to understand how it was made...
farmerm
Member
- Location
- Shropshire
20Kg per ton... I reckon that is probably more sequestration than occurs per ton of chopped straw that is direct drilled into...
Frankzy
Member
- Location
- Jamtland, Sweden
To be fair though the wings only adds up to something like 10% of the whole windmill. 90% recyclable is not a terribly low number compared to many other things.