Unloading pneumatic trailer with blower vs nitrogen

Scared off a dust explosion?

 

You did not say what you were unloading.

Steel mills are particular about what they put into the blast. Sometimes with made to order steel anything that is exposed to oxygen excessively will either be contaminated or otherwise altered beyond expected steel chemistry.

70% of whats around us is already nitrogen, it's the 21% oxygen thats the problem in steel in some ways.

When they do a campaign over a 10 hour blast at the tower furnace that material is mixed oh so careful. It will come out good to spec on the tap (Pour) or not. Women are not alone in knowing how to bake.

 

So limestone, coal (Carbon), Iron Ore, chromium, and a small amount of other trace materials to make a steel product a certain spec.

Limestone is the flux material more or less. Its a little bit of a art making that steel either through the Bessemer Process or the Blast Process. The blast involves a worlds worth of oxygen concentrated and blasted into the tower where the steel itself is being made from the pile of coal, ore and limestone over a certain time to get the heat needed to do it right.

I talk too much but its a interest as part of overall industry and what makes them tick. Small details like use of nitrogen to fill your bulk tanker gets my wheels going. Im just a bulk cement man and lucky to be that. However the training was so concrete so many years ago that I could take a bulk load right now and make it delivered no problem or supervision. Just one of those things.

 

I think they used nitrogen to preserve your limestone product. So it wont get burned, wet or whatever. Once your limestone gets to the furnace to be made into steel with the other materials that is the time for all the oxygen in the world to be blasted into it to make steel at ungodly temperatures. They have blast houses that do nothing but generate huge oxygen flow to the tower where the steel is made.

I used to have a recipie and a complete process of steel making as we did it in Cornwall PA from before when we were part of the Crown. And continued to do so centuries later. From the National park Service somewhere in my pile of emails. I don't know if I still possess it or not but if you are really interested, I'll contact Cornwall's staff and ask for a replacement of that information. It has no secrets because its dating to the 1700's however everything steel today in one way or another depending on the process is made similar to that original way.

 

Nitrogen controls moisture. Maybe it dries out the limestone.

 

Nitrogen is a supplement to the limestone in the steel process. Adding nitrogen changes the steels resistance to corrosion, and changes the properties of steel in various ways depending how much is used. Limestone is one of the only ingredients in the process capable of absorbing the nitrogen and dispersing it into molten steel