铁精矿冷固球团矿煤基回转窑直接还原新工艺的关键技术包括复合粘结剂及相应的配套实用技术。提出了含复合粘结剂的生球强度界面作用力综合模型，冷固球团矿强度的粘结膜机理，含复合粘结剂的冷固球团矿催化还原体积反应机制及全窑高温快速还原热工制度。
An innovative process of direct reduction of cold-bound pellets of iron concentrate with coal-based rotary kiln has been developed successfully,with some key technologies, including special composite binder and corresponding reasonable techniques. The binding principle in pelletizing covers a comprehensive model of interfacial reaction among particles inside green pellets, the formation of binding film during hardening of green pellets by baking to obtain enough strength for a volumetric catalyzed reduction model for cold-bound pellets bearing composite binder and corresponding high temperature reduction system in rotary kiln.
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