【作者】 廖国燕；

【导师】 李夕兵；

【作者基本信息】 中南大学 ， 采矿工程， 2009， 硕士

【摘要】 本文针对黄磷渣的潜在胶凝活性,进行了一系列的室内试验和现场工业试验,研究认为黄磷渣可以开发成一种来源广、价格低廉的充填胶凝材料。本文主要研究内容如下：(1)利用有机化学、物相分析等基础理论,从黄磷渣的物理性质、化学成分、活化机理、充填料浆体结构的形成过程,探讨了黄磷渣的水化反应机理及用作矿山充填胶凝材料的可能性；(2)以黄磷渣-磷石膏混合料浆为研究对象,进行大量室内试验,以不同龄期的充填体抗压强度为指标,研究了激发剂种类及掺量对黄磷渣充填胶凝材料的激发效果,分析了黄磷渣在激发剂作用下的水化反应机理。试验结果表明：黄磷渣-磷石膏试块的单轴抗压强度在NaOH和CaO激发作用下均有较大提高,NaOH和CaO的最佳掺量分别为5%和8%。黄磷渣的水化反应产物存在水化硅酸钙,此外,磷石膏中的硫酸盐在激发黄磷渣活性中也起到了一定作用。(3)对黄磷渣-磷石膏胶结充填体进行了室内单轴抗压试验,揭示了料浆浓度、黄磷渣掺量等单因素对充填体强度的影响规律。通过多因素正交科学实验,运用多元线性回归的数学方法对黄磷渣-磷石膏胶结充填体强度影响因素进行探索研究。(4)通过经验公式计算得到充填料浆的输送速度与输送阻力,以便进行不同参数条件下的技术经济比较,从而设计最佳的输送条件。结合矿山的地质条件及开采条件,选择充填系统站址并设计充填系统,为黄磷渣-磷石膏胶结充填在矿山中的应用提供条件。更多还原

【Abstract】 The dissertation has studied yellow phosphorus slag roundly and systemically aiming at its potential cementing performance and it can be developed a broader coming and cheaper filling cementing material.(1)Compositive using basic theories knowledge,such as sonochemistry,phase analysis,the paper has studied the filling material hydrating reaction mechanism on yellow phosphorus slag and the probability used as cementing agent in mine cementing filling from yellow phosphorus slag’s physical performance,chemical component,activating mechanism and the forming process of filling materials frame.(2) According to the physical, chemical and thermodynamic characteristics of yellow phosphorus slagfill as well as its activity principle,based on a large number of indoor tests and the compressive strength of fill in different period, this paper analyzed the influences of types of alkali activator,dosage of alkali on compressive strength of cementicious materials filled with yellow phosphorus slag and its hydration reaction mechanism. The results show that proper alkali activators are the critical material for strength. NaOH and CaO are the good choices, the best dosage of that two alkalis are 5% and 8%. The hydration product of yellow phosphorus slag includes C-S-H, in addition, the sulfate of the phosphogypsum also played a certain role in stimulating.(3)getting the uniaxial compressive strength of yellow phosphorus slag-phosphogypsum cementing filling by indoor tests and revealing the influence law of the thickness of filling slurry,dosage of yellow phosphorus slag on the strength of backfill.更多还原