Lathe waste contains high iron,therefore it has the potential to be a precursor in hematite(a-Fe2O3)synthesis.In this work,hematite-was synthesized from lathe waste using the co-precipitation-calcination method with variation time of calcination:1,2,3,4 hours.The X-Ray diffraction data showed that the goethite(a-FeOOH)phase was obtained at precipitation stage then transformed to hematite(α-Fe2O3)phase after calcination and there is no impurities.The image of scanning electron microscopy showed that the distribution of particle size was not uniform.The color parameter showed that the highest chroma was achieved for 3 hours calcination.
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机译：车床废物含有高铁，因此它有可能是赤铁矿（A-Fe2O3）合成的前体。在此工作中，使用具有煅烧变化时间的共析析煅烧方法从车床废物中合成赤铁矿：1 ，2,3,4小时。X射线衍射数据显示，在沉淀阶段获得甲酸酯（A-FeOH）相，然后在煅烧后转化为赤铁矿（α-Fe 2 O 3）相，没有杂质。图像扫描电子显微镜表明，粒度的分布不均匀。颜色参数显示煅烧3小时的最高色度。
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