DR GRADE PAtriot Pellets
American iron for the next generation of American steel.
For more than 125 years, the Iron Range has supplied the iron ore that helped build America. Today, Mesabi Metallics is carrying that legacy forward with Patriot Pellet, our flagship brand of premium direct reduction-grade (DR-grade) iron ore pellets.
When operational, our Nashwauk, Minnesota facility will produce approximately 7 million metric tons of DR-grade pellets annually. Mined and processed entirely in the United States, Patriot Pellet will feature very high iron content and low levels of impurities, making it well suited for DRI and electric arc furnace (EAF) steelmaking and supporting the production of steel with lower carbon emissions.
Patriot Pellet represents a long-term investment in the Iron Range and the future of American steelmaking—providing a high-quality, domestic source of iron ore for generations to come.
PELLET PROCESS
Transforming Iron Ore to DR Grade Patriot Pellets: A Journey from Earth to Innovation. At Mesabi Metallics, we take pride in our efficient and environmentally friendly process of converting iron ore into Direct Reduction (DR) grade iron ore pellets. Here’s an overview of our 9-step journey:
Step 1. Responsible Mining: We begin by extracting our taconite iron ore using the most advanced open-pit mining methods. The taconite ore will be drilled, blasted and mined with environmentally friendly electric shovels and hauled to our primary crusher with the most advanced haulage fleet available with reduced emissions.
Step 2. Crushing: In this step, we break down the mined taconite ore into smaller pieces, separating larger fragments from finer materials for further processing. This separation of larger fragments from smaller ones ensures efficient feeding of the autogenous mills in the concentrator.
Step 3. Grinding: Our unique grinding process blends crushed ore from two storage facilities to feed the autogenous mills. Here, large fragments grind the smaller ones to fine powder.
Step 4. Concentration: We use advanced magnetic separators and cutting-edge flotation technology (like a giant, high-tech washing machine) to separate valuable iron minerals from unwanted impurities. This way, we produce some of the purest iron ore globally, with SiO2 levels expected at 1.8% and AI2O3 at 0.1%.
Step 5. Pelletizing: Next, we take our concentrated iron ore and mix it with limestone and carefully selected binders – think of these as glue that helps hold everything together. Using advanced rolling and screening process, we turn this mixture into round pellets, similar to a bouncy ball from a vending machine. Our pelletizing technique ensures uniform size and composition for optimal processing.
Step 6. Induration: The induration process is where science truly comes alive. The round pellets are conveyed to our state-of-art furnace where they are dried and then fired at high temperatures. This crucial step hardens the pellets and gives them the strength and quality needed for direct reduction iron making process.
Step 7. Cooling: After induration, the pellets are cooled down gradually to avoid cracking and to prepare them for handling and loading into rail cars. Additionally, the heat from the cooling zone is recovered to reused, promoting energy efficiency.
Step 8. Quality Control: Each batch of pellets undergoes rigorous testing for size, chemical composition and metallurgical properties. This guarantees our pellets are suitable for direct reduction and meet our strict quality benchmarks.
Step 9. Storage and Transportation: Finally, the finished DR grade iron ore pellets are stored and prepared for transport. By producing premium DR-grade iron ore pellets, we’re not just manufacturing a product –we’re engineering a sustainable future for global steel production. At every step, our process remains rooted in innovation, quality and sustainability, aligning efforts with creating a greener future.
Why it matters:
- Our process helps reduce emissions and minimize environmental impact.
- Our iron ore pellets enable the production of eco-friendly American made steel.
- We’re committed to delivering high-quality pellets with ultra-low impurities while promoting environmental responsibility.
