1 depleted iron ore by crushing or broken in after roughing, excluding waste rock, etc., improve quality, reduce process under a load.
(2) reduction of hematite Magnetic Grates closed for roasting operations will not fully restore ore sorting, return and then burn.
3 for the ceramics industry will porcelain mud mixed iron removal, improve quality of ceramic products.
4 burning coal, foundry sand, refractory, and other lines of iron work to be required.
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