Radiation characteristics of natural gamma-ray …
Top coal caving simulation test: put 300 mm crushed coal in the funnel, and then tiled 500 mm crushed gangues, the detector height was reduced to 200 mm from the platform bottom plate, the platform was lifted to a tilt angle of 35°, then opened the software to detect the background radiation for a certain time, then opened the coal to let the coal and gangue run out freely, to detect the ...
Separating coal and gangue using three …
10-12-2017 · 1. Introduction. Gangue minerals accounts for between 15% and 20% of raw coal in China (Qian et al., 2007).Indeed, as coal production has increased, so has gangue generation; by the end of 2009, the total amount of gangue produced added up to 5.0 × 10 9 t, encompassing 40% of the total Chinese solid waste (Miao and Qian, 2009).The accumulation of coal gangue not only takes up a …
Application of EMD-Based SVD and SVM to Coal …
Coal-gangue interface detection during top-coal caving mining is a challenging problem. This stone proposes a new vibration signal analysis approach to detecting the coal-gangue interface based on singular value decomposition (SVD) techniques and support vector machines (SVMs). Due to the nonstationary characteristics in vibration signals of the tail boom support of the longwall mining …
Detection of Hg(II) in Coal Gangue with Anodic …
01-11-2018 · Mercury is one of the common heavy metal elements in coal gangue, and it is very important to detect mercury in view of environment risk control. In this work, we develop a rapid and simple detecting method of mercury in coal gangue based on anodic stripping voltammetry. Through a large number of experiments, operational parameters of anodic stripping voltammetry detection for …
Research on Coal and Gangue Identification …
A method based on infrared thermal wave to distinguish coal and waste rock is introduced. Infrared thermal wave detection technology, a fast and effective detection method, can detect different characteristics of coal and gangue on the surface or subsurface. Test showed that coal and waste rock can be distinguished effectively by processing their infrared thermal wave image.
Coal Gangue Image Edge Detection Based on …
Download Citation | Coal Gangue Image Edge Detection Based on Wavelet Transform | An edge detection algorithm is developed for coal gangue images, and …
(PDF) Automatic Coal and Gangue Segmentation …
Sorting gangue from raw coal is an essential concern in coal mining engineering. ... level probability map instead of detecting an input image as a whole [19]. Compared to the original .
Radiation characteristics of natural gamma-ray …
09-01-2018 · At the same time, the coal-gangue recognition test platform was developed to simulating the process of top coal caving and detecting the radiation signal from the coal and gangue …
Trace Elements in Coal Gangue: A Review | …
13-04-2017 · Coal gangue is one of the largest industrial residues. It has high ash content, low carbonaceous content, and heating value. Meanwhile, it has some trace elements. Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land. Now, coal gangue utilization is a matter of great concern …
Energies | Free Full-Text | Automatic Coal and …
Sorting gangue from raw coal is an essential concern in coal mining engineering. Prior to separation, the location and shape of the gangue should be extracted from the raw coal image. Several approaches regarding automatic detection of gangue have been proposed to date; however, none of them is satisfying. Therefore, this stone aims to conduct gangue segmentation using a U-shape fully ...
Comprehensive utilization and environmental risks …
The accumulated coal gangue without appropriate utilization has resulted in a squander of resources, waste disposal and environmental pollution issues. Over the past few decades, there has been wide attention in developing strategies for the utilization of coal gangue due to a cultural shift towards sustainable development coupled with increasing demand for disposing the challenge of coal ...
the sulfur content of coal gangue
Coal gangue is one of the largest industrial residu It has high ash content, low carbonaceous content, and heating value Meanwhile, it has some trace elements Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land Now, coal gangue utilization is a matter of great concern and has ,
Recent Patents on Roll Crushing Mills for Selective ...
Keywords:Counter roller crusher, coal gangue, crushing, let roll, patent, selective crushing technology, separation of coal and gangue. Abstract: Background: Gangue is the concomitant product of coal mining. The traditional approach for gangue treatment is to transport it from underground to ground level to accumulate and form gangue hills.
CN101450811A - Method for extracting alumina …
The invention mainly relates to a method for extracting alumina from coal gangue. The coal gangue is ground, and then is calcined through a fluidized furnace and iron is removed through a magnetic separator, the coal gangue with the iron removal reacts with an acid to obtain an aluminum chloride solution without silicon impurities, the solution containing the aluminum is concentrated and ...
Recycling coal from coal gangue - freepaper.me
Recycling coal from coal gangue. Coal gangue is not just solid waste, but also has the potential to yield useful energy. In China, a mining group and a local power plant power plant joined forces with a local university to look at ways to recycle coal gangue to improve the revenue, cut down on resource utilization, and reduce environment pollution.
cone crusher let coal gangue turning waste into …
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coal gangue milling process - azdoc.nl
Coal gangue raymond roller mill price Henan Mining. Coal gangue Recycling coal and pyrite Method Two recycle pyrite washed mixing coal and medium coal from coal preparation jigger shaker flow plane 3 Recycling coal and pyrite Method One By simple technology to wash and elect high quality coal from coal gangue at . Read More
Coal and Gangue Underground Pneumatic …
Coal and gangue underground pneumatic separation is of key importance for green mining. Two kinds of arrangement schemes for high-pressure value used in pneumatic separation system are proposed in this study. Pneumatic separation effects are examined under different arrangement of high-pressure value. Here, theoretical pneumatic separation distance formulas of mineral particles affected by ...
Release characteristics of heavy metals from coal gangue ...
Keywords: Coal gangue, Heavy metal, Leaching simulation, Release rate 1. INTRODUCTION Coal gangue is an inevitable byproduct in the process of coal mining. With the development of the coal mining industry in recent years, the heavy-metal pollution from the coal gangue is paid more and more attention (Zhang et al., 2009; Sun, 2005; Sun et al ...
detection of line gangue - …
In this work, we develop a new rapid detecting method of Zn(II), Cd(II) and Pb(II) in coal gangue based on anodic stripping voltammetry Through a large number of experiments, operational parameters have been optimized This work provides a quick and convenient detection method for heavy metals in coal gangue...