Eco-economically effective method of fluorangydrite utilization

Relevance. At this moment, one of the types of ecological disadvantage is the presence of sulphate-calcium waste in hydrogen fluoride production, referred to in scientific and technical literature as fluorangydrite, which pollutes the environment in places where the production facilities are located not only in the Russian Federation, but also in other countries. The use of fluorangydrite, a solid waste of the above-mentioned production, as a raw material for construction products will not only reduce the negative impact on the environment, but also occupy a new niche of the market of construction products, obtaining economic profit. Earlier the employees of Tomsk Polytechnic University developed several directions of fluorangydrite application in construction industry with different profitability coefficients. Aim. Development of variants of obtaining highly profitable resource-saving construction products on the basis of technogenic anhydrite binder, which is an alternative to natural mineral – anhydrite, in the form of building products such as channel and floor screed. Results and conclusions. The paper introduces the information on safety of this type of building products based on the results of radiological study of technogenic anhydrite from Siberian chemical plant. The authors have revealed the grinding intensity impact on fluorangydrite neutralization time. They determined the compositions of components of new building products, some their properties, including those depending on the ratio of water and gravel screening, as well as on the time of mixing the mortar, the dependence of strength and water resistance of anhydrite building samples on the content of water and gravel screening.