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| Experiment on influence of sintering properties with a medium titanium magnetite concentrate |
| JIANG Da-jun |
| （Ironmaking Plant， Panzhihua Vanadium Steel Co.， Ltd.， Panzhihua 617024， Sichuan， China） |
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Abstract As technical and economic indexes were worse with high titanium concentrate sintering，when a medium titanium concentrate of iron content 55%，TiO2 9%，－0.074 mm size fraction more than 80% matched into high titanium concentrate of TiO2 more than 12.5% sintering by suitable proportion what could strengthen granulation，lower melting point，increase amount of liquid phase and improve the sinter performance indexes so that the most prominent value was saving high price rich ore consumption and reducing sinter cost. The system experiment research was achieved in aboratory and sintering machine as chemical composition，mineral composition and particle size distribution of this medium titanium concentrate is more different comparing with high titanium concentrate. With medium titanium concentrate replacing part of high titanium concentrate sintering，experiment results in laboratory showed that mix partical size was improved，sintering speed accelerated，increasing yield effect was obvious，the rate of increasing output reached 5.35% by each increasing 10% medium titanium concentrate so that can make up the defects of low utilization coefficient of high titanium concentrate sintering.On the other hand，sinter mineral composition was improved，content of calcium ferrite increased and was higher than the reference period，perovskite showed a trend of decreasing，silicate content also increased，metallurgical properties had no change. With 25% medium titanium concentrate insteading of high titanium concentrate，the industrial test results showed that utilization coefficient rose 0.023 t/（m2·h），drum index increased 0.16%，solid fuel consumption decreased，so the sintering overall effect was superior than high titanium concentrate sintering.
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Received: 29 September 2017
Published: 11 May 2018
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2018, Vol. 53 
