In this paper,sintered bricks are prepared by microwave sintering method taking iron tailings and abandoned adobe brick as raw materials,and the influence of iron tailings on the microwave sintering process is analyzed by microwave sintering method,and the influence of iron tailings on the mechanical properties of microwave sintered brick is analyzed by SEM and mer-cury injection technology.The test results are as follows:iron tailings have changed the overall dielectric properties of microwave sintered brick materials,improved the loss ability of sintered bricks under microwave radiation,and accelerated the overall sintering process.Microwave sintered bricks from iron tailings and waste soil have good compressive strength.When the content of iron tail-ings is 25％,the compressive strength can reach 35.38 MPa and the porosity is 13.28％.When there is excessive iron tailings,local expansion or thermal stress concentration may occur inside the brick body,resulting in microcracks and large pores,leading to a decrease in compressive strength.Therefore,when iron tailings was used as a raw material for brick making,the amount should be controlled between 25％and 30％.
关键词
铁尾矿/微波烧结/介电损耗/烧结砖
Key words
iron tailings/microwave sintering/dielectric loss/sintered brick
维普
万方数据