Using the low-temperature plasma in cement production

12th International Conference on Gas Discharge Plasmas and Their Applications

Sazonova, N.A.^1 ; Skripnikova, N.K.^2

Angarsk State Technical Academy, 60 Tchaykovsky st., Angarsk

665835, Russia^1

Tomsk State University of Architecture and Building, 2 Solyanaya sq., Tomsk

634003, Russia^2

关键词: Low temperature plasmas;    Mineralogical compositions;    Quantitative and qualitative analysis;    Ratio of length to widths;    Raw material mixtures;    Saturation coefficient;    Scanning electronic microscopy;    X-ray phase analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/652/1/012063/pdf
DOI  :  10.1088/1742-6596/652/1/012063

来源: IOP

【 摘 要 】

The calculation of the raw-material mixtures and mineralogical composition of the cement clinkers which are synthezed on their base taking into account the disbalanced crystallization of the melting and glassing under conditions of the low-temperature plasma was performed. The difference of the actual values from the calculated ones is 0.69-3.73%. The composition which is characterized as the saturation coefficient 0,88; the silicate module - 3.34, the alumina module - 2.52 in melting of which the alite in amount 78.7%; 3CaO•SiO2- 4%; 3CaO•Al2O3- 9.8%; 12CaO•7Al2O3-2.9%; CaOfree- 1% formed using the lime-stone from the quarry «Pereval» in the town of Slyudyanka and the clay from the deposit «Maximovski» in Irkutsk Region is considered as the optimal one. The structure of the melted clinker is represented as the metastable minerals of alite in the lamellar form with the dimensions up to (3-20) × (80-400) μm and the ratio of length to width 26.6-133. The elongated crystal form may stipulate the high cement activity based on the melted clinkers, which is 82.7-84.2 MPa. Valid- ing the revealed high activity of the viscous substance was confirmed by the results of the scanning electronic microscopy, X-ray phase analysis, with using of which the quantitative and qualitative analyses of the clinker minerals having the deformed crystalic lattice; were performed the morphology of the minerals in the clinker and cement stone, received on its ground, was studied.