laminate floor

I. What kind of laminate? II. How thick is the top laminate?

If the laminate is the composite (painted grain onto HDF or MDF) type-- I doubt it. If the laminate is actually wood, it's most likely only 3/32" thick or less (the actual top layer of wood) -- a floor sander is out of the question. However, you could use a buffer with those heavy cleaning pads & some Orange oil cleaner.- remember to nuteralize- And to clean out from inbetween the cracks. Then lightly sand/scuff with a dry cleaning pad (hand sand the corners)-- then refinish with poly. Have not actually done this- Your laminate may delaminate from over application of water/cleaner in cleaning/neutralizing. (test in an inconspicuous place) However, I did this on a really old pine floor that could not take any more sanding ( could see nails in some places) & the process worked really well.