Our customer buys slag from Bao steel factory. They recycle metallic steel from the slag. But after recycle, the steel particles are not pure. Our customer needs to increase the purify to 85% to get a goood price. So they purchased a purfication plant from our company. This is a wet plant. Because this plant needs water. The key equipment is ball mill, magnet separator, belt conveyors, and water recycling system,etc,.