Accelerated reclamation of iron ore enrichment waste

Abstract

Reclamation includes a set of measures aimed at forming on the surface of industrial dumps a favorable root layer by various methods with subsequent use of this area. Conservation is the fixation of the dumps surface by mechanical means or by gardening the dumps surface with the preliminary application of a minimum layer of soil, peat, mineral fertilizers, growth substances, unconventional soil improvers - sewage sludge (SS). As a result of the work carried out on the surface of iron ore enrichment waste of Abagur Processing Agglomeration Factory, technosols were formed - artificial soils with a root layer of sown leguminous grasses, consisting of a mixture of SS and tailing material. The reclamated areas have been created on iron ore enrichment waste, which ensure erosion stability of the tailing dump surface and conservation of enrichment wastes. The chemical and agrochemical parameters of the technosols over the two years of their development have changed. Some alkalinization of the medium and a sharp decrease in the amount of organic matter and all forms of nitrogen in the substrate of the root layer of plants are observed.