Comprehensive solution of recycling waste from stone processing industry

Abstract

Purpose. Development of integrated technological solutions for utilization, accumulation and processing of wastes of the stoneprocessing industry with the production of marketable products with commercial value. Methodology. Technological solutions have been applied for separate utilization, transportation, storage and processing of granular waste of the stoneprocessing industry in accordance with their initial size. Findings. The technological rationality of separate delivery and warehousing to temporary warehouses in the form of storage pits no more than 2.5 m high (with site arrangement between them of largescale waste rubbish and medium and small stone cuttings) by specialized dump trucks equipped with grabbing petrol buckets and dumpshaped reinforced bodies is substantiated. The technology of the preparation of oversized raw materials for further grinding using crushing equipment on a mobile chassis is described, using hydraulic hammers as a hydraulic excavator attachment. The rationality of the application of the technology for the collection, transportation and drainage of primary sludge by means of specialized automobile chassisslurry trucks equipped with a mobile slurry container was substantiated. The peculiarities of twostage processing of primary sludge і considered with the provision of their drainage first in Mobile Slurry Containers, then on secondary drainage sites and final cleaning from finedispersed impurities and the receipt of the commercial product in the form of artificial sand by washing. As a result of experimental and industrial testing and testing of the technology of the mobile slurry container filling, the technological rationality of the use of mobile slurry containers is determined. Originality. For the first time, a technology of recycling and twostage sequential processing of primary sludges, which are manmade waste of stonemaking production with deriving a commercial product in the form of artificial sand, is developed. Practical value. Research and industrial testing of the technology of the mobile slurry container filling with sludge with the subsequent washing of the drained granular material has been performed. The performed research studies allowed quantifying the technological rationality of twostage processing of primary sludge using mobile slurry containers and gravity hydraulic classifiers.