A fragment forge can enhance the yield of ores. When ores are processed in a fragment forge, they are broken into clumps and small clumps.
Nine small clumps can be crafted into a clump. These clumps can then be processed in a centrifuge to convert them into dusts and small dusts, which can be smelted in a furnace.
You can place raw ores into a fragment forge, but for some ores, better results are achieved by mining them with a silk touch pickaxe and placing the ore blocks into the forge.
Both the fragment forge and the centrifuge can also produce secondary ores. For example, processing nickel will yield nickel and may also provide some platinum.