METHOD OF MAKING GYPSUM ARTICLES BASED ON BASALT FIBER PRODUCTION WASTES Russian patent published in 2019 - IPC C04B28/14 C04B18/04 C04B111/20 

FIELD: production technology.

SUBSTANCE: invention relates to production of construction materials, namely, to methods for increasing strength of gypsum articles, and can be used in production of wall blocks, plates, panels, small articles from gypsum. Method of making gypsum articles based on basalt fiber production wastes involves dosing, mixing semi-aqueous gypsum with basalt fiber wastes for 1 minute. Mixture of semi-aqueous gypsum is quenched with wastes from production of basalt fibers with a saturated solution of lime in the following ratio, wt %: semi-aqua gypsum – 66.4–66.8, basalt fiber production wastes – 6.64–6.7, slaked lime solution – 0.027–0.035, water – balance, then molding and holding the product made from said mixture at temperature 20–25 °C and humidity 50–60 % for 6–7 days in carbon dioxide at pressure 0.010–0.015 MPa. Obtained crude mixture is mixed for 30–40 seconds.

EFFECT: technical result is high strength, low cost of articles from gypsum, as well as reduced labor and energy intensity, simplified technology of their production.

1 cl, 2 ex