熔ける, 鎔ける only used for metals; 解ける only used for ice and snow

to melt; to thaw; to fuse

to dissolve

溶かす／解かす／融かす only

to dissolve

熔かす and 鎔かす are used for metal

to melt

to melt into; to dissolve into; to merge into

to blend into (surroundings); to fit in; to adapt to; to integrate

to melt (and become soft or liquid)

to be enchanted (by); to be charmed; to be bewitched

lava

to melt together

溶解 only

dissolution; dissolving; solution (e.g. chemical)

melting; liquefying; fusion

to begin to dissolve

to dissolve (paint); to scramble (eggs); to melt (metal, etc.); to mix (water with flour, etc.)

thawing of snow; thaw

thaw (in relations)