通过正交试验研究了用铁矿石和煤粉制造冷固结含碳球团的影响因素。考察了粘结剂的加入量、水含量、压球机的压力、压球机进料速度、压球速度、烘干温度和烘干时间对球团抗压强度的影响。结果表明：粘结剂加入量、烘干时间与水含量对球团的抗压强度影响最大，并进一步通过回归试验获得了这3个影响因素与球团抗压强度之间的回归方程。经验证，方程在一定范围内与试验结果符合较好。试验过程中获得的铁矿石冷固结含碳球团的最大抗压强度为25167N。
In order to clarify the influencing factors of cold-bonded molding ore/coal composite pellets made by iron ore and coal, orthogonal experiments were done to study the performance of ore/coal composite pellets through adjusting the binding agent content, moisture, pressure, feeding speed, molding speed, baking time and baking temperature. The results show that top three factors are binding agent content, baking time and moisture. A regression equation between that three factors and pellets′ compression strength was present by further experiments. The regression equation can meet experimental results with good effects. The maximum compression strength of ore/coal composite pellets is 25167N during cold-bonded molding experiments.
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