CAJ | 학술논문

基于绝热温升模型和有限元数值计算方法，确定硫化矿石堆积体自燃预测指标，研究氧化速度对硫化矿石堆积体温度场的影响，建立硫化矿石堆积体温度场数值模型。计算结果表明，硫化矿石的氧化速度受到多重因素影响，通过调整参数m值反映堆积体中矿料氧化速度的快慢。随着m值的增大，氧化速度增大，堆积过程中以及后期堆放早期的最高温度值显著升高，而在堆放后期整体温度分布基本相同；其形心点的最高温度也增大，堆放后期该点温度值基本保持不变。
기우절열온승모형화유한원수치계산방법，학정류화광석퇴적체자연예측지표，연구양화속도대류화광석퇴적체온도장적영향，건립류화광석퇴적체온도장수치모형。계산결과표명，류화광석적양화속도수도다중인소영향，통과조정삼수m치반영퇴적체중광료양화속도적쾌만。수착m치적증대，양화속도증대，퇴적과정중이급후기퇴방조기적최고온도치현저승고，이재퇴방후기정체온도분포기본상동；기형심점적최고온도야증대，퇴방후기해점온도치기본보지불변。
Based on the adiabatic temperature rise model and finite element numerical method, the prediction index on spontaneous combustion of sulfide ore deposit was determined.The influence of oxidation rate on the temperature field of sulfide ore deposit was studied, and a numerical model on temperature field of sulfide ore deposit was estab-lished.The calculation results showed that the oxidation rate of sulfide ore may be affected by multiple factors.It can reflect the oxidation rate of mineral material by adjusting the value of parameter m.With the increasing of m, the oxidation rate increases, and the maximum temperature in the stacking process and early stage of post stacking process increased obviously, while in the post stacking process, the overall temperature distribution was basically the same.The highest temperature of the centroid point also increased, and the temperature remained unchanged basically in the post stacking process.