采用正交试验法优配石灰立窑代焦型煤的研究

Optimization study of lime-upright-furnace briquette used as a substitution for coke with orthogonal experiments

采用全概率公式评分法对试验结果进行了极差分析和方差分析，得出了石灰立窑代焦型煤粘结剂的配方及相应的成型工艺参数，粘结剂的配方为4％的镁基固化剂、1％的活化剂、1％的生物质纤维和0．12％的表面活性剂；相应的成型工艺参数为成型压力20kN、成型水分17％、烟煤配量10％及3水平的原料煤粒度组成，即O．5mm粒级含量58％，0．5～1．0mm粒级含量14％，1．0～2．0mm粒级含量17％，2．0-3．0mm粒级含量11％．然后对粘结剂的作用机理及最佳成型工艺参数进行了分析．试验结果表明：研制的石灰立窑代焦型煤具有良好的冷、热态强度及热稳定性，能满足石灰立窑工业生产的需要．

AThe test results were processed utilizing the method of the multi-factorial total probability formula evaluation. Based on the range analysis and variance analysis, obtained the optimal component of the compound binder, namely 4 % of magnesium-base curing agent, 1% of biomass fiber, 1% of activator, 0. 12 % of calcium lignosulfonate, and correlative key parameters of briquetting technics, namely 20 kN briquetting pressure, 17 % of briquetting water, 10 % mixture ration of bituminous coal and the size-composition of anthracite with 58 % of less thnn 0. 5 mm size. 14 % of between 0. 5 -1.0 mm size, 17 % of between 1.0 -2.0 mm size and 11% of between 2.0 - 3.0 mm size. Analyzed the bonding mechanism of the compound binder and the optimal parameters of briquetting technics. The experiment results show that the lime-upright-furnace briquette prepared according to the optimal scheme obtained in this experiment has the excellent cold strength, hot strength and heat stability, which can demand the industrial production of lime-upright furnace.