Three quarters of the world’s phosphate deposits are of sedimentary origin and 75%–80% of those include carbonate gangue. In this study, carbonate sedimentary phosphate deposits of the Lar Mountains of southwest Iran are studied. These deposits consist mainly of calcite, fluorapatite, quartz, kaolinite and illite, with an average P2O5 grade of 9%–10% (low-grade). Various pre-processing and proc...

Coal gangue, as a solid waste produced in the coal mining process, can be disposed by being prepared into backfill materials and then filled underground goafs, thus controlling strata movement surface subsidence. However, gangue are non-continuous; therefore, research deformation induced should consider creep compression behavior of materials. The took panel Tangshan Mine (Tangshan City, Hebei ...

To study the heterogeneity and local of gangue particle size distribution (PSD) under ball milling, from northern Shaanxi coal mine was taken as a research object. The multifractal pattern PSD variation trend characteristic parameters different ball-to-gangue ratios grinding times were analyzed by introducing theory microscopic methods such laser analysis scanning electron microscopy. results s...

Mining extraction operations generate a large number of tailings that contain different mineral phases such as quartz (principally), complex silicates, metallic elements, etc. Tailings impose serious concern it is possible to have acid mine drainage potential, leaching, and percolation events heavy metals into the environment under certain conditions. The objective this work was evaluate techni...

Recognizing coal and gangue is an important part of the industry mainly conducted via human sorting at present. Consequently, considerable manpower needed, which adds a burden to enterprises results in low efficiency. As branch artificial intelligence, deep learning has been widely applied many fields, especially machine vision voice recognition, its performance greatly improved compared with p...

The use of cemented Aeolian sand-fly ash backfill (CAFB) material to fill the mining area improve surface subsidence damage caused by underground coal is in development stage. Their performance with large overflow water and strength loss not well understood. Few research has been conducted understand effects aeolian sand gangue on rheological properties CAFB plasticizers. Therefore, this study ...

To effectively separate coal and gangue, accurate classification is an important prerequisite. Here, a new recognition solution for gangue proposed, in which the convolutional neural network (CNN) trained to achieve automatically identifying based on infrared images without considering selection of feature extraction classifier. Firstly, specific architecture detailed parameters model are optim...

Many minerals are effective absorbers of microwave energy, whereas in general gangue materials are not. This suggests applying microwave heating to mineral processing to effect selective heating of minerai phases. Many mineral processing applications have been tested only on a laboratory scale; the engineering realities of large-scale operations have largely been overlooked. Of particular conce...