Fired bricks were prepared with iron tailings, clay and coal gangue based on analysis of the basic characterizations. The test investigated the inlfuence of iron tailings content and ifring system on the performance of ifred bricks. The results showed that the content of iron tailings and temperature had important inlfuence on the performance of ifred bricks. The water absorption and compressive strength were reduced when the content of iron tailings increased from 20%to 55%, while the volume density had a little change. The volume density and water absorption were decreased;the compressive strength was increased with the rise of ifring temperature. When the holding time was prolonged, the compressive strength was gradually increased and the volume density and water absorption had a little change. When the ifring temperature was below 900℃, the ifred bricks produced many fractures and it is known as“lime blowing”. The optimal condition of ifred brick preparation was:the content of iron tailings 45%, ifring temperature 1000℃, the holding time 120 min. The compressive strength of ifred brick reached the requirements of GB5101-2003 strength grade MU20.%在对铁尾矿、黏土、煤矸石等原料性质进行分析的基础上，按照一定配比制备烧结砖，考察了铁尾矿掺加量及烧成制度对烧结砖性能的影响。结果表明，铁尾矿掺加量、烧成温度、保温时间均对烧结砖性能有较大影响。随着铁尾矿掺加量从20%增加到55%，烧结砖体积密度变化不大，吸水率和抗压强度逐渐减小；随着烧成温度的升高，烧结砖试样体积密度、吸水率逐渐减小，抗压强度逐渐增大；随着保温时间的延长，烧结砖试样抗压强度逐渐增大，体积密度和吸水率变化不大。烧结砖试样有轻微泛霜现象和一定的石灰爆裂现象，当烧成温度低于900℃时，石灰爆裂现象更严重。制备烧结砖的最优条件为：铁尾矿掺加量45%、烧成温度1000℃、保温时间120 min；烧结砖强度达到GB5101-2003强度等级MU20要求。
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