I already commented above but no, they aren't - silicosos is similar to one of the several possible diseases asbestos can give you, asbestosis, but mesothelioma is the real horror outcome from asbestos exposure which I don't believe silica has any kind of similar connected disease.
Yes, maybe I expressed myself improperly, mesothelioma (often originated from asbestos) is slow (like 20 to 40 years from exposure):