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1前言 宜宾海丰和锐有限公司120万吨/年电石渣综合利用制水泥项目由天津水泥工业设计研究院有限公司承建;本项目建设2×2000t/d新型干法水泥熟料生产线,100%利用电石渣替代石灰质原料烧制水泥熟料,最大限度地使工业废弃物——电石渣资源化。此项目电石渣滤饼输送方案拟采用管道输送代替胶带机输送。 相似文献
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基于压力板法和水汽平衡法获取缓冲回填材料土水特征曲线,探讨干密度、掺砂率、温度和溶质浓度对缓冲回填材料土水特征曲线模型的影响。遴选出三参数的张虎元模型和四参数的Fredlund and Xing模型可用于拟合我国高庙子(GMZ)膨润土—砂混合物的土水特征曲线,发现吸力值测试范围对模型选取影响很大。干密度和温度与张虎元模型参数具有很好的相关性,而掺砂率和溶质浓度与模型参数的相关性不明显;干密度与Fredlund and Xing模型参数具有很好的相关性,但掺砂率、温度和溶质溶度与模型参数规律性不明显。根据试验数据拟合出的土水特征曲线模型参数与干密度的经验公式,可用来评估处置库运行期材料密度不断变化时的持水特性。 相似文献
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立式辊磨烘干能力强,广泛应用于高水分原料的粉磨。然而在一些地区水泥生产用的原料不仅水分高,而且含有酸性化合物,这些化合物通常含有硫和氯。这就对生料磨废气处理系统设计造成很大的困难,首当其冲就是酸腐蚀的防治。在国外某水泥厂的提产改造项目中就遇到这种情况,原料的特点为水分高(最高10%),含有0.214%硫铁矿(FeS2),燃料为石油焦(硫含量为5.6%),加之项目所在地区气候寒冷,给项目的设计带来巨大困难,本文将针对这种极端情况下的生料磨废气处理系统的排放指标计算、流程选择、露点温度计算等进行详细的介绍。 相似文献
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Employing an ideal elasto-plastic model, the typically used strength reduction method reduced the strength of all soil elements of a slope. Therefore, this method was called the global strength reduction method (GSRM). However, the deformation field obtained by GSRM could not reflect the real deformation of a slope when the slope became unstable. For most slopes, failure occurs once the strength of some regional soil is sufficiently weakened; thus, the local strength reduction method (LSRM) was proposed to analyze slope stability. In contrast with GSRM, LSRM only reduces the strength of local soil, while the strength of other soil remains unchanged. Therefore, deformation by LSRM is more reasonable than that by GSRM. In addition, the accuracy of the slope's deformation depends on the constitutive model to a large degree, and the variable-modulus elasto-plastic model was thus adopted. This constitutive model was an improvement of the Duncan~Chang model, which modified soil's deformation modulus according to stress level, and it thus better reflected the plastic feature of soil. Most importantly, the parameters of the variable-modulus elasto-plastic model could be determined through in-situ tests, and parameters determination by plate loading test and pressuremeter test were introduced. Therefore, it is easy to put this model into practice. Finally, LSRM and the variable-modulus elasto-plastic model were used to analyze Egongdai ancient landslide. Safety factor, deformation field, and optimal reinforcement measures for Egongdai ancient landslide were obtained based on the proposed method. 相似文献
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