Unwillingly to the Scrap Heap
نویسنده
چکیده
منابع مشابه
Stability Analysis and Stabilization of Miduk Heap Leaching Structure, Iran
To construct copper heap leaching structures, a stepped heap of ore is placed over an isolated sloping surface and then washed with sulphuric acid. The isolated bed of such a heap consists of some natural and geosynthetic layers. Shear strength parameters between these layers are low, so they form the possible sliding surfaces of the heaps. Economic and environmental considerations call for stu...
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In copper heap leaching structures, the ore is leached by an acidic solution. After dissolving the ore mineral, the heap is drained off in the acidic solution using a drainage system (consisting of a network of perforated polyethylene pipes and gravelly drainage layers) and is, then, transferred to the leaching plant for copper extraction where the copper is extracted and the remaining solution...
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There are some artificial and natural materials on foundation of heap leaching structures. Geomembrane liner is the most important artificial isolated layer of these structures. The thickness of this layer is about 1 to 2 mm. Foundation overall settlement of such structures changes the primary length of the geomembrane layer. If the strain of geomembrane is more than allowable one, the layer wi...
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Introduction: In training courses, all the materials learned will not always be transmitted to the workplace because of some effective factors. The aim of this study was to determine the effective factors on the formation of scrap learning in in-service training. Method: This descriptive qualitative study was conducted using conventional content analysis. Data were collected using semi-structur...
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