How It's Made - Fiber Cement Siding

I can say that I am a homeowner of a home covered in fiber cement board, specifically HardiePanels.

At 1:03 the video says that water is pumped into the pulverized sand to 'liquify' the sand. Really? In my head, liquify means melting. The sand clearly isn't melting, but it is coming together into a slurry. Is the word liquify being used correctly there?

Production of the cement fiber boards here are conceptually simple - sand, cement, wood fiber, water - but impressively complex in processing, particularly the use of pressurized steam to speed up the cement curing process.