Energy-efficient unburned technologies for the use of phosphogypsum

Energy Management of Municipal Transportation Facilities and Transport - EMMFT 2017

Zolotukhin, S.N.^1 ; Kukina, O.B.^1 ; Abramenko, A.A.^1 ; Soloveva, E.A.^1 ; Savenkova, E.A.^1

Voronezh State Technical University, Moscow Avenue, 14, Voronezh

394026, Russia^1

关键词: Chemical production;    Nanoscale thickness;    Physicomechanical properties;    Polymer materials;    Presence of water;    Resource savings;    Structure formations;    Theoretical foundations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/90/1/012088/pdf
DOI  :  10.1088/1755-1315/90/1/012088

来源: IOP

【 摘 要 】

Along with the traditional ways of using the waste of chemical production of sulfuric acid - phosphogypsum, the innovative and promising way is its processing in the production of cementless, non-flaming, artificial building materials. In this paper, the theoretical foundations of the technology for the preparation of limestone-sand-phosphogypsum building material (IPF), the influence of the thickness of aqueous films on the processes of structure formation, the results of studies on the physicomechanical properties, nano- and microstructure of the IPF are presented. It is shown that, as in polymer materials, where this effect was observed, the strength is created due to the presence of water films with nanoscale thickness. The developed technology of non-burning cementless IPF building materials will allow to reduce and completely abandon the labour, energy, time-consuming processes of roasting, washing of phosphogypsum, which is actual, promising and innovative in the conditions of energy and resource saving. Products made with the use of this technology will reduce the energy consumption for heating the premises.