From: whit3rd@gmail.com   
      
   On Monday, January 20, 2020 at 5:31:45 AM UTC-8, default wrote:   
   > On Sun, 19 Jan 2020 21:39:17 -0800 (PST), whit3rd    
   > wrote:   
   >    
   > >On Friday, January 17, 2020 at 11:01:39 AM UTC-8, Jasen Betts wrote:   
   > >> On 2020-01-16, Michael Terrell  wrote:   
   > >   
   > >> >    Coal is still needed to manufacture steel.   
   > >>    
   > >> coal is not needed there are other processes   
      
   > >Are you sure?   What kind of container holds a few tons of ore and enough   
   hydrogen    
   > >or 'natural gas' to reduce it?   Doesn't hydrogen attack the oxides in   
   firebrick?   
   >    
   > “The solution that we have opted for is to have a completely fossil   
   > fuel free value chain for steel production,”   
      
   > https://cleantechnica.com/2018/05/14/hydrogen-from-renewables-   
   ould-make-emissions-free-steel-possible/   
   >    
   > More:   
   >    
   > https://www.energy.gov/sites/prod/files/2018/08/f54/fcto-h2-sc   
   le-kickoff-2018-19-green.pdf   
      
   yeah, but... the temperatures are VERY high, how do   
   you keep the H2 pressure up and ensure container integrity?   
      
   The process flow, too, seems to require very finely divided ore input, because   
   the particle surface   
   is the only reaction site, and the ore heating is not mentioned, nor slag   
   separation.   
   It seems the first pilot plant will have some kinks to work out, when it's   
   starts in a few months.   The   
   engineering for full-scale uses isn't projected this decade, nor next.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)