Abstract

The goal of this study is to increase the energy efficiency of pipeline hydraulic transport of water-swellable aluminosilicate dispersions. A model commercial suspension, the filler of which is a complex mixture of aluminosilicates, has been used to develop an approach that makes it possible to improve the technological properties of such suspensions. Modification of the suspensions consists in adding organic and inorganic inhibitors of swelling of dispersed phase particles, as well as nonionic surfactants. The influence of the additives leads to a decrease in the yield stress and an increase in sedimentation stability of the heterogeneous systems. It has been shown that the use of the complex modifying additive prevents the particles of the model suspension from agglomeration and provides it with sedimentation stability at temperatures up to 70°C, which is important for the technical process in which the suspension is intended to be used. Technically, the research is of an applied nature. A well-known approach to modifying suspensions is used, which consists in combating the aggregation of dispersed phase particles and blocking ion exchange between them and the dispersion medium. The performed set of rheological shear and oscillation tests and the study of the sedimentation stability of the suspensions in the presence of various modifying additives have resulted in optimizing their composition. The practical result of the work is the successful hydrotransport of the suspension in which the content of the dispersed phase is 50% higher than that in the unmodified suspension, thus increasing the energy efficiency of the process.

中文翻译：

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可溶胀硅铝酸盐悬浮液的稳定

摘要

本研究的目的是提高水膨胀硅铝酸盐分散体的管道水力输送的能源效率。一种商业悬浮液模型，其填料是硅铝酸盐的复杂混合物，已被用来开发一种方法，可以改善此类悬浮液的技术性能。悬浮液的改性包括添加分散相颗粒溶胀的有机和无机抑制剂以及非离子表面活性剂。添加剂的影响导致非均相系统的屈服应力降低和沉降稳定性增加。事实证明，复合改性添加剂的使用可以防止模型悬浮液的颗粒团聚，并使其在高达 70°C 的温度下具有沉降稳定性，这对于悬浮液的技术过程非常重要。用过的。从技术上讲，该研究具有应用性质。使用众所周知的改性悬浮液的方法，该方法包括对抗分散相颗粒的聚集并阻止它们与分散介质之间的离子交换。所进行的一系列流变剪切和振荡测试以及在各种改性添加剂存在下悬浮液的沉降稳定性的研究优化了其组成。这项工作的实际结果是悬浮液的成功水力传输，其中分散相的含量比未改性悬浮液高50%，从而提高了过程的能量效率。