When you open the file, there’s a text editor that gives you a hint: Append (shift + F1).
Anyway,
open the file containing your model and select your model (right-click)
“shift + F1”, browse to the location of “chrome_minnaert-blinn.blend” and click on it, open “Material” (since that’s the part you need), select “ChromeMinnaertBlinn” (right-click) and load library (enter)
in the “Shading” panel (F5), “Material” buttons, “Links and Pipeline” tab, click the arrow at the left of “Add New” and choose “ChromeMinnaertBlinn”.