基于RSM-DF的矿渣胶凝材料复合激发剂配比优化

doi:10.13722/j.cnki.jrme.2019.0718

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摘要针对较细全尾砂胶结充填采用水泥胶凝材料不仅充填效果差，而且成本较高的问题，利用矿渣微粉开发低成本矿山充填胶凝材料，为了有效激发矿渣微粉活性，在前期大量探索性试验的基础上，利用响应面–满意度多目标优化法(RSM-DF)，开展复合激发剂配比优化试验。首先对试验材料进行物化分析；其次基于前期试验确定的影响因素及相应水平，采用Design-Expert软件中的Box-Behnken响应面法设计并进行13组试验；接着根据结果建立响应面回归模型来研究3个因素及其交互作用对28 d强度、料浆坍落度及泌水率的影响；然后在此基础上采用满意度多目标优化法对复合激发剂配比进行优化。结果表明：2 8 d强度、坍落度和泌水率3个响应量不仅受单一因素的影响，而且受因素之间交互作用的影响；复合胶凝材料优化配比为：熟料含量4%，脱硫灰渣19%，芒硝含量0.5%，矿渣微粉76.5%，并以此配比进行验证试验，得到28 d强度、料浆坍落度和泌水率分别为3.42 MPa、18.6 cm和6.1%，均满足高浓度自流输送的要求。最后利用XRD和SEM等分析方法，探究了新型充填胶凝材料的水化机制，为新型胶凝材料在矿山的利用提供理论依据。

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	温震江1
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	高谦1
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	王忠红3
	杨晓炳1
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关键词 ：采矿工程, 充填采矿法, 胶凝材料, 矿渣微粉, 响应面–满意度函数, 多目标优化, 水化机制

Abstract：In view of the problems of the poor filling effect and high cost of cemented cementing material used for fine unclassified tailings cement filling. The low-cost mine filling cementitious materials is developed by using ground granulated blast furnace slag powder(GGBFSP). In order to effectively stimulate the activity of GGBFSP，on the basis of a large number of exploratory tests in the early stage，the multi-objective optimization method of (RSM-DF) was used to carry out the compounding agent optimization experimen. Firstly，the physicochemical properties of the test materials were analyzed. Secondly，based on the influencing factors and the corresponding level determined by the previous experiment，13 groups of experiments were designed and carried out by using Box-Behnken Response Surface Methodology in Design-Expert software. And according to the results，response surface regression model is established to study the influence of three factors and their interaction on 28 d strength，slurry slump and bleeding rate. Then on this basis，the multi-objective optimization method of satisfaction was used to optimize the ratio of composite activator. The results show that the three responses of 28 d strength，slump and bleeding rate are not only affected by a single factor，but also by the interaction between factors. The optimized proportion of composite cementitious material is：clinker content is 4%，desulfurization ash content is 19%，mirabilite content is 0.5%，the GGBFSP is 76.5%. And the verification test was carried out at this ratio，and the 28 d strength，slurry slump，and bleeding rate is 3.42 MPa，18.6 cm，and 6.1%，respectively，which meet the requirements of high-concentration gravity flow transportation. Finally，the hydration mechanism of new filling cementitious material was studied by XRD and SEM，which provided theoretical basis for the utilization of new cementitious material in mines.

Key words： mining engineering filling mining cementitious material ground granulated blast furnace slag powder(GGBFSP) response surface methodology and desirability function(RSM-DF) multi-objective optimization hydration mechanism

引用本文:

温震江1，2，高谦1，2，王忠红3，杨晓炳1，2. 基于RSM-DF的矿渣胶凝材料复合激发剂配比优化[J]. 岩石力学与工程学报, 2020, 39(S1): 3103-3113.
WEN Zhenjiang1，2，GAO Qian1，2，WANG Zhonghong3，YANG Xiaobing1，2. Optimization of compound activator ratio of the ground granulated blast furnace slag powder cementitious material based on RSM-DF. , 2020, 39(S1): 3103-3113.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2019.0718 或 http://rockmech.whrsm.ac.cn/CN/Y2020/V39/IS1/3103

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