Optimization of particle size distribution in circulating …
After the coal gangue passed through the crushing system, almost all particles were <10 mm, and particles below 2.3 mm accounted for approximately 20% of all fed particles. The two-toothed roll crusher was modified to fit the coal gangue feed in the crushing system.
Introduction to Mineral Processing or Beneficiation
Most rock deposits contain metals or minerals, but when the concentration of valuable minerals or metals is too low to justify mining, it is considered a waste or gangue material. Within an ore body, valuable minerals are surrounded by gangue and it is the primary function of mineral processing, to liberate and concentrate those valuable …
Integrated green mining technology of "coal mining-gangue …
In Tangshan Mine, there are four engineering problems, including the layout of multiple seam mining system, serious environmental damages caused by gangue accumulation and surface collapse, nearly 100 million tons of three under coal (coal trapped under buildings, water bodies, and railways) to be released, and the control accuracy of …
Recent Patents on Roll Crushing Mills for Selective
Objective On the basis of summarizing previous research results, this paper introduces the hydraulic roller crusher and the electric machine built-in coal gangue roller crusher, which avoids the ...
ULTRASONIC CRUSHING APPARATUS AND METHOD
One aspect is an ultrasonic crusher including a pipe system having at least one elutriator. A pump is configured to pump a slurry through the pipe system and the at least one elutriator. ... Pump 12 forces the ore and gangue mixture into a first pipe segment 14A of pipe system 14 toward a first elbow section 26. In one embodiment, ...
Simulation of carbon emission for …
However, this technology has added several subsystems, such as a coal-gangue separating system, gangue-return transportation system, and filling system underground, 4 which greatly increase the complexity and energy consumption of the underground system manufactured. It is evident that energy consumption by mining …
Compaction characteristics and energy dissipation of crushed gangue …
Compaction properties of the backfill body are the key to reveal the law of roof subsidence and illustrate the mechanism of ground pressure control with gangue backfill mining. A rock mechanic testing machine and a self-designed steel cylinder were applied to conduct compaction experiments of gangue with different particle sizes, axial stresses, …
Optimization of particle size distribution in circulating …
This research investigated the ability of the adaptive neuro fuzzy inference system (ANFIS) to simulate the effects of throw, eccentric speed, closed side setting, and the size of the particle on crusher output and resolved that the model fostered was a suitable instrument for the onsite cone crusher assessment. Expand
Processes | Free Full-Text | Gangue Source Reduction …
The precise identification of damp, sticky coal gangue; efficient jet nozzle separation; and process layout in a narrow, restricted space are essential technologies for gangue source reduction based on underground gangue photoelectric separation, which is critical for the long-term growth of coal mines. In this paper, the X-ray absorption fine …
Gangue grouting filling in subsequent space of coal green …
The research aims to innovate an efficient underground disposal model for gangue, contributing to the refinement of the technical system for the comprehensive disposal and utilization of gangue. Underground backfilling stands out as a crucial technological strategy for the eco-friendly and effective management of solid waste in …
Research and engineering practice on space characteristics …
Coal gangue slurry backfilling technology utilizes the voids formed by the caving and fragmentation of overlying rocks as storage space for gangue, achieving in …
Simulation and optimization of mining-separating …
China's coal mining technology has experienced a range, from cave mining to underground mining and ground coal dressing (Xia and Wang, 2020); from throwing-gangue filling and mining to fully mechanized mining with solid backfilling to realize the direct filling of underground gangue (Miao et al., 2015; Miao and Zhang, 2014); and …
Construction of intelligent visual coal and gangue separation system …
Due to the energy composition of China rich in coal, poor in oil and low in gas, coal will continue to be the main energy source in China for a long time. In order to improve the intelligence level of coal mine and realize the efficient and clean utilization, coal and gangue sorting is the research focus of many experts and scholars. At present, the …
Crusher System | Rosporden
Crusher System, Rosporden. 848 likes · 27 talking about this. .
Recent Patents on Roll Crushing Mills for Selective Crushing …
Objective: On the basis of summarizing previous research results, this paper introduces the hydraulic roller crusher and the electric machine built-in coal gangue roller crusher, which avoids the complex transmission problems caused by the movement of the central axis when the roller crusher is allowed to roll.
Technology and engineering test of filling goaf with coal …
The technology of filling goaf with coal gangue slurry consists of three parts: crushing system, pulping system, and pumping system; each system is connected and …
Recent Patents on Roll Crushing Mills for Selective Crushing …
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. On the basis of summarizing previous research results, this paper introduces the hydraulic roller crusher and the electric machine built-in coal gangue …
A New Thin Seam Backfill Mining Technology and Its …
Backfill mining is an effective way to control ground subsidence and govern gangue. To solve the problem of thin coal seam mining under villages, a new thin seam backfill mining technology was proposed. This paper investigated a reasonable proportion of filling materials by experiments, designed the filling system and introduced key …
Sustainability | Free Full-Text | Experimental Investigation of
This study examines the particle size and distribution of the main chemical components of gangue during the crushing process. Coal mine gangue was chosen as the research object, and its particle size and chemical components at various crusher discharge settings were examined through screening, grinding, chemical composition …
Using Chinese Coal Gangue as an Ecological Aggregate and …
Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development requirements. This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue …
Mineral processing | Metallurgy, Crushing & Grinding
mineral processing, art of treating crude ores and mineral products in order to separate the valuable minerals from the waste rock, or gangue. It is the first process that most ores undergo after mining in order to provide a more concentrated material for the procedures of extractive metallurgy.The primary operations are comminution and …
Sustainability | Free Full-Text | Experimental Investigation of …
Coal mine gangue was chosen as the research object, and its particle size and chemical components at various crusher discharge settings were examined …
Simulation test study on filling flow law of gangue slurry in …
The gangue samples used in the simulation test were taken from Fuxin Mining Group. The gangue is crushed and screened by the jaw crusher, as shown in Fig. 5. The remaining particle size was ...
Mobile Crusher
Option 2. Medium hardness rock crushing ($70,000-150,000) Main equipment: jaw crusher, PF1210 impact crusher, 2YK1548 vibrating screen Applicable materials: limestone, granite, gypsum, marble, coal gangue, construction waste, etc. Production capacity: 70-130t / h Feeding granularity: ≤500mm The discharge can meet the requirements: 10-30mm ...
Analysis of strength failure in gangue-based cementitious …
Backfill mining is an effective way to solve environment pollute, surface subsidence, and groundwater system damage which caused by coal mining. However, the complex underground environment may change the physical and mechanical properties of the backfill body, which poses a risk of strength failure. This paper analyzed the failure …
The Analysis of Influence of the Gangue in the Coal as …
sam ple Mt/ Mad/ Ad/% Vad/ Qnet /MJ /kg results evaluat ion HG I ple 3 4 6 gangue sam ple 4 2.8 1.98 32.18 29.7 2 20. 12 large coal 71 When the coal was unloaded for 17 days, the iron
Recent Patents on Roll Crushing Mills for Selective Crushing …
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. Objective: On the basis of summarizing previous research results, this paper introduces the hydraulic roller crusher and the electric machine built-in coal …
Full article: A review of intelligent coal gangue separation …
Traditional Coal Gangue Separation Process and Equipment. Water washing and dry coal preparation are the main parts of coal preparation. Spiral separation, jigging, heavy medium separation, and other processes are water washing processes, which have the advantages of mature technology, high separation accuracy, and large processing …
Compaction characteristics and energy dissipation of …
The energy dissipation of the compaction test includes three parts: ① compaction deformation of crushed gangue (including gap closure, friction slip and …
Compound Crusher for All Kinds of Stones | Fote Machinery
The vertical compound crusher is mainly composed of the crushing system (rotor, bearing, liner, hammer), transmission system (motor, pulley), in-and-out mouths, and other parts. ... Performance characteristics of coal gangue compound crusher. 1 The compound crusher is suitable for crushing coal gangue with high water content, ...