Just a basic BC tank will do, put it in place under a spout, and right click it. It'll pour out into that. I have a couple hanging around that I stored Lava in, before I switched to a Magma Crucible for the job.
That said, I use the Smeltery to cook stacks of ore and extract them as blocks. Occasionally I end up with partials, and it's occasionally more convenient to stick it in a tank for the moment.
That said, I use the Smeltery to cook stacks of ore and extract them as blocks. Occasionally I end up with partials, and it's occasionally more convenient to stick it in a tank for the moment.