agglomerate stone for use in vat ovens, corex or blast furnace ovens, process for the production of agglomerate stones and use of fine and fine iron ore powder

摘要

BULK STONE FOR THE USE OF CUBA OVEN, COREX OR HIGH-OVEN PROCESSES, PROCESS FOR THE PRODUCTION OF IRON ORE FINAL AND FINAL POWDER STONES ". which falls in the making and preparation of iron ore, which is not usable to date, the present invention proposes a agglomerate stone which has (in weight%) of 6 to 15% of a cement binder, up to 20% of a carrier up to 20% of waste and rolling materials, optionally up to 10% of a hardening and solidifying accelerator, and a particulate stone-shaped iron ore with a grain size of less than 3 mm, It also has an initial resistance after a minimum of 3 days of 5 N / mm¬ 2¬ and after 28 days a cold pressure resistance of at least 20 N / mm¬ 2¬. its stability d and even at high temperatures T, the agglomerate stones according to the invention are especially suitable for use in a vat kiln, Corex process kiln or blast furnace. Furthermore, the invention provides a process for the production of agglomerate stones according to the invention.