· Coal gangue is an industrial solid waste produced by coal mining and processing [1 3] The average production of gangue accounts for 10 15% of raw coal production [4 5] making coal gangue one of the biggest solid wastes in China At present utilization ratio of coal gangue can reach about 60% in some countries
The process for coal separation includes two steps of size grading and oversize raw coal separating A size range is obtained through size grading then the obtained raw coal is separated by a sensor system and coal briquettes with high impurity contents are blown into an impurity chamber through high speed compressed air thus improving the separating
· The comprehensive utilization of coal gangue CG is restricted by color elements in CG including C and Fe x O magnetic separation and hydrothermal acid leaching are combined to pretreat the solid waste CG to synthesize zeolite A with high whiteness
Coal gangue detection and recognition algorithm based on deformable convolution YOLOv3 De yong Li1 3 4 Guo fa Wang3 4 Yong Zhang1 2 Shuang Wang1 2 1 State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and Technology Huainan China 2 School of Mechanical Engineering Anhui University of
Due to the ine ciency of gangue separation much gangue flows out of the mining area which increased the transporting costs and caused severe pollution to the environment [1] Therefore e ectively sorting gangue from the raw coal is essential in improving the quality of the coal and reducing the costs of transport With the increase of labor costs and the need to avoid hazards
matic separation of coal and gangue has not been discussed adequately andhas notbeen appliedin mineralseparation Currently pneumatic separation has been widely used in agriculture eld and rare metal recycling eld A cotton seed online separation system based on machine vision was designed to realize automatic separation of red brown and black cotton seed by
The separation effect of coal gangue with high calorific value is better New type coal gangue crusher The upper part of the new coal gangue crusher is an umbrella like structure and the top part is provided with feeding holes When the material enters the equipment the gangue will be evenly dispersed by the distributing device and the coal waste can also be temporarily stored
· Coal gangue separation is of key important for green mining Robotic separation of coal and gangue based on the machine vision system which is called a coal gangue picking robot with a gangue grab driven by four cables is developed in this study Here this paper focuses on the equivalent position workspace within which a coal gangue picking robot
PROCESSING LOW RANK COAL AND ULTRA FINE MINERAL PARTICLES BY HYDROPHOBIC HYDROPHILIC SEPARATIONleaving the siliceous gangue minerals aqueous phase The agglomerates were then separated from dispersed gangue minerals by screening and the agglomerates dispersed in a hydrophobic liquid n pentane
· The 6mm coal to be separated was introduced into the MSFB by dropping it from a height of 30mm above the bed surface The coal particles floated to the surface of the MSFB while the gangue particles sank to the bottom of the MSFB After forty seconds of separation both the fluidizing gas flow and the magnetic field were shut off Then
A 4 layer Levenberg Marquart BP Neural Network is designed to implement multi feature fusion in coal and coal gangue separation system framework based on video and has well performance on separation accuracy and its processing speed achieves real time We consider the problem of automatically separating coal and coal gangue based on computer vision and design a coal
The combustion process of coal gangue and the subsequent separation of alumina and silica by alkaline leaching of the simulated CFB slag were investigated The results show that in the combustion process kaolinite in coal gangue firstly converts into meta kaolinite at 600 900 °C due to dehydroxylation and then the meta kaolinite splits into mullite and amorphous silica at
· The coal gangue powder is the main grouting material in BSBG for Longquan coal mine Injecting gangue powder into the bed separation zone can not only mitigate the ground subsidence but also solve the problems of environmental pollution and land occupation caused by traditional gangue stacking The raw coal gangue was crushed and ground into
· Separation of samples into different specific gravities to aid in the identification of minerals Determining the separation which can be made between the heavier minerals and lighter gangue minerals Evaluation of products by separating into sink and float fractions Sink Float Tests are classed as bulk or selective separations
The process for coal separation includes two steps of size grading and oversize raw coal separating A size range is obtained through size grading then the obtained raw coal is separated by a sensor system and coal briquettes with high impurity contents are blown into an impurity chamber through high speed compressed air thus improving the separating
Dry coal separation has more advantages than wet coal separation [5 7] The composite dry separator is mainly used for discharging gangue of steam coal and coking coal [8 9] The composite dry separator uses the powder contained in the feed as self generating medium to form gas solid mixture
· Gangue separation is necessary before raw coal is loaded for transportation Figure 2 describes the structure of a typical gangue separation line As shown in the figure the raw coal needs to pass through a vibration sieve to filter out small coal blocks
coal particles electrostatic gangue separation Prior art date 1912 12 19 Legal status The legal status is an assumption and is not a legal conclusion Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed Expired Lifetime Application number US73768912A Inventor Frederic W C Schniewind
· Compared with traditional neural network and SVM algorithm this algorithm has higher recognition rate for coal and coal gangue and provides important reference for identification and separation of coal and gangue Subjects Computer Vision and Pattern Recognition Cite as arXiv []
Gangue minerals once separated by mineral dressing processes of most of the valuable ore minerals and dumped in mine tailings may be a significant environmental impact In particular oxidation of pyrite a common gangue mineral is one of the main sources of acid mine drainage Re use Minerals that were once thought of as gangue and were dumped may later find a
For the high sulfur coal gangue gravity separation can help to separate the pyrite and the waste gangue The pyrite concentrate can be sold while the separated coal gangue can be sold to the power station or made into new type building materials For the low content sulfur coal gangue which kind of treatment can be profitable As we all know that there is still coal
· Coal Gangue Pulverizer Raymond Mill Finished product fineness 80 325 mesh Production capacity 100t/h It is suitable for the processing of more than 300 kinds of high fine powder materials in non flammable and explosive mineral chemical construction and other industries with Mohs hardness not greater than 7 and humidity below 6%
· The comprehensive utilization of coal gangue CG is restricted by color elements in CG including C and Fe x O y The magnetic separation and hydrothermal acid leaching are combined to pretreat the solid waste CG to synthesize zeolite A with high whiteness Firstly Fe 2 O 3 component in CG is in situ reduced by C to magnetite in the process of high temperature
Vor 1 Tag · Coal is an essential energy source for human survival and gangue is a solid waste discharged in coal mining and washing which cannot be directly used as fuel With the gradual maturity of computer technology and rapid iterative updating of software and hardware photoelectric sorting technology is thriving Because photoelectric separation technology is
Coal Gangue Sorting System—HXS Intelligent Dry Type Separator Author Teresa zheng Beijing HOT Mining Tech Co Ltd Traditional coal preparation methods include heavy media jigging and flotation These methods have been applied in CHPP for a long history All of them have a common feature is that high water consumption and needs disposal of
The composite dry separator is mainly used for discharging gangue of steam coal and coking coal [8 9] The composite dry separator uses the powder contained in the feed as self generating medium to form gas solid mixture Material mainly subjected to the comprehensive effect of vibration and wind to complete the stratification and realize the separation process
Abstract To solve the problem of environmental pollution of coal gangue heap to produce in Datong hill mine coal gangue as the research object on the basis of the characteristics of the analysis and research from the coal gangue in sorting out the included the feasibility of the technology The research results show that the moving sieve jigging separation process to
A process for the flotation of particles of lignitic coal subbituminous coal or oxidized bituminous coal contained within a slurry of coal and gangue comprising the steps of dispersing a surfactant throughout the slurry first conditioning the slurry such that the surfaces of the particles of coal are selectively coated by the surfactant to produce activated particles of coal dispersing an
We consider the problem of automatically separating coal and coal gangue based on computer vision and design a coal and coal gangue separation system framework based on video Grayscale histogram fractal dimension and energy value are extracted as ore features Then we design a 4 layer Levenberg Marquart BP Neural Network to implement multi feature fusion
Coal gangue could been separated from the lump coal To improve operation speed the high performance microcontroller DSP was used as the core processor of system It can achieve the real time automatic separation of coal gangue It provides a