The subject matter of the project is to elaborate a technology of obtaining new products from mining waste generated during exploitation of gneiss deposits for aggregate.
It is a step towards waste-free technology of gneiss deposit exploitation together with management of hitherto accumulated mining waste of the mining plant Doboszowice 1. The realization consists in implementation of both the technology of selective mining of the deposit in the pit and application of mechanical processing of mined gneiss with the process of mutual disintegration of rock waste grains, which are conglomerates of fusions and adhesions of rock-forming minerals of laminated and mesh gneiss.
The technology concerns the operation of separating feldspar and quartz grains from females and separating aluminosilicates. The first two constitute the raw material for feldspar and femic minerals will be a component in the production of soil improver. The following activities will be carried out during the project including:
▪ acquisition of new knowledge of the mineral,
▪ testing waste from the production of grits and ornamental stones, determining its physical and chemical properties,
▪ testing of waste samples and determination of their processing properties, including on industrial equipment,
▪ technological tests of waste at the built node of grinding, determining the parameters of the grinding process, which will cause the separation of the granulated mineral grains,
▪ tests on the processing of waste to determine the possibility of producing feldspar products and components for soil improvers.
This knowledge will be used to verify the suitability of the feldspar products and in the design and construction of a demonstration test line. The line will be integrated into an existing processing system producing grits. The expansion of the system will enable the manufacture of new products with a higher commercial value and the management of existing waste. Potential customers for the new, innovative products will be ceramic and glass manufacturers and agriculture.