losetup /dev/loop0 raw-image-file.raw
Once done, use kpartx to recognise and activate partitions in the image:
kpartx -a /dev/loop0
Once done, you can see the partitions available to this image under /dev/mapper/loop0*
# ls /dev/mapper/loop0*
/dev/mapper/loop0p1 /dev/mapper/loop0p2 /dev/mapper/loop0p3 /dev/mapper/loop0p4 /dev/mapper/loop0p5 /dev/mapper/loop0p6
Now, you can mount each partition to a mount point, for example:
mount /dev/mapper/loop0p1 /mnt
Once all the processing is done, unmount the partitions, deactivate partitions with kpartx and remove the loop device:
umount /mnt
kpartx -d /dev/loop0
losetup -d /dev/loop0