Extraction of alumina from alumina rich coal gangue by a …

2020-4-29 · 1. Introduction. 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 comprehensive utilization of the coal gangue.

Gangue is a low-carbon solid waste produced during coal mining and washing, accounting for about 10%− 15% of the total coal output [3]. The cumulative gangue output in China is close to 5 ...

Coal Processing Methods

2020-2-13 · Other Coal Processing Methods. Oxidation. Other Chemical Reactions. Extraction. Activated Carbon and Other Special Carbons. Miscellaneous. Coal Waste Utilization. More coal processing is done in foreign coal-producing countries because of their requirements for a smokeless fuel, their need to make a satisfactory metallurgical coke from inferior ...

Stone Crushing Machine

Ore Concentrate High Efficiency Concentrator Coal. Ore Concentrate High Efficiency Concentrator Coal 2019715 · This high efficiency concentrator is widely used for processing slurry waste water and waste residue in metallurgy chemistry coal nonmetal ore beneficiation and environmental protection industry and has great significance to improve the utilization rate of …

Coal Gangue Crushing and Screening

2022-7-14 · Coal Gangue is a kind of solid waste discharged from coal mining and coal washing. It is also a kind of black-gray rock with lower carbon content and harder than coal. Its main components are Al2O3 and SIO2. In addition, it contains various amounts of Fe2O3, Cao, MgO, Na2O, K2o, P2O5, SO3 and traces rare elements (gallium, vanadium, titanium ...

Stone Crushing Machine

Coal preparation plant process and equipment for coal . After the coal is washed the meteorite can be disposed of on site which can reduce the inefficient transportation and create conditions for the comprehensive utilization of coal gangue Coal washing is an indispensable process for deep processing of coal Coal preparation plant also named coal wash plant The coal directly …

Coal gangue detection and recognition algorithm based …

2021-12-7 · Received: 3 June 2021 Revised: 25 August 2021 Accepted: 29 August 2021 IET Image Processing ... 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

Introduction to Mineral Processing or …

2018-1-12 · 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 minerals. 1.3 Run-Of-Mine Material and Minerals. Generally, mineral …

Frontiers | Factors Affecting Brittleness Behavior of Coal …

Coal gangue, which is the solid waste produced during the coal processing, causes serious environmental problems. Lightweight concrete by making use of the coal-gangue ceramsite as the aggregate has many advantages as the construction material. However, the high brittleness of lightweight aggregate concrete is one of the problems for its application in building …

coal-gangue

Gangue, also called coal gangue, is the solid waste discharged in coal mining process and coal washing process, black rock harder than coal. Its carbon content is low and exists along with coal seam. Gangue could be found in roof, bottom board, inter-layer, and it could be selected in washing process. The main ingredient are Al2O3, SiO2, Fe2O3 ...

Coal Gangue Sorting System—HXS Intelligent Dry Type …

Coal gangue identification flowchart. Technical features ※ Wide processing size range: It can handle 30- 600mm raw coal. The upper limit of separation is 600mm and the lower limit is 30mm. ※ High separation accuracy: The rate of gangue removing is over 95%, the rate of coal in gangue is less than 2%, and the separation effect is significant.

Platinum Mining and Refining

Mining platinum in placer deposits is a relatively simple process. Dredges scoop the platinum-bearing sand or gravel from riverbeds or mining pits. The material is washed until platinum grains or nuggets are captured and pulled from the …

Do You Know Coal Gangue Processing Machines

 · Coal gangue would be the common term of solid waste materials coming from coal mine construction, coal production method widely typical in the construction, development diving, coal mining and coal washing process with exhaust carbon rock. Three aspects of coal gangue source. Coal Gangue Crusher. 1. Rock roadway drivage generated when the coal ...

The thermal activation process of coal gangue selected …

2016-7-25 · The coal-gangue sample was considered as belonging to a typical mixture of kaolinite and boehmite. The XRD and FT-IR spectra clearly showed that the structural changes and dehydroxylation of coal gangue occurred with increased temperature from 100 to 900 °C. The reaction activity of coal gangue could be effectively improved by calcination.

dehradun concentrator processing coal gangue

A. Gupta, D.S. Yan, in Mineral Processing Design and Operation, 2006 15.5.3 Spiral Concentrator. The spiral concentrator first appeared as a production unit in 1943 in the form of the Humphrey Spiral, for the separation of chrome-bearing sands in Oregon.

Review of Coal Gangue Characteristics and Ecological …

2021-5-1 · Coal gangue has become one of the industrial wastes with the largest annual discharge and accumulated stock in China. The disorderly accumulation of coal gangue not only occupies a large amount of land resources and causes natural disasters, but also pollutes the surrounding ecological environment, which in turn affects human health and normal production …

Application of the Falcon Concentrator for fine coal cleaning

1996-11-1 · The optimal splitter position in a spiral concentrator is dependent on the interface position(s) between concentrate, middlings and/or gangue streams in the spiral trough. Image processing methods can be used to detect interface positions, which could be used in spiral concentrator operation monitoring and control.

Stone Crushing Machine

Coal Preparation Plant Coal Preparation Process Coal . Coal Preparation Process Crushing Screening Raw coal is transported to crushing workshop by belt conveyor First it is pre screened by a circular vibrating screen with a sieve opening of 50 mm 50mm materials and extra large gangue enter the crusher and are crushed to – 50mm and then transported to the coal …

How To Effectively Use Coal Gangue?

2021-10-13 · There are several ways to use: 1. Recovery of coal and pyrite: Through a simple process, good coal is washed from coal gangue, low-quality coal is selected from it through screening, and pyrite is selected at the same time. Or recover pyrite, mixed coal and middling coal from the jig used for coal preparation ─ ─ plane shaker process.

Process Optimization Experiment of Preparing Light …

2019-11-1 · In this paper, coal gangue light ceramsite was prepared by using coal gangue from Qinghai Reshui coal mine as raw material and sodium carbonate as auxiliary material. The optimized process conditions are as follows: the mass ratio coal of gangue and sodium carbonate = 50:1 (10% hydrochloric acid contamination); the drying temperature is 105±2 ...

Extraction of alumina from alumina rich coal gangue by …

2020-4-28 · 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. There are still huge ...

Chaeng vertical mill processing coal gangue

2020-8-31 · After calcination and ultrafine grinding by a vertical mill, the coal gangue that was originally discarded can meet the industrial grade requirements of papermaking, coatings and other fields, turning waste into treasure. In addition, the coal gangue crushed by the vertical mill can also be used to make cement, building ceramics, power glue ...

Extraction of alumina from alumina rich coal gangue by a …

2020-4-29 · Vast quantities of gangue from coal mining and processing have accumulated over the years and caused significant economic and environmental problems in China. For high added-value utilization of alumina rich coal gangue (ARCG), a mild hydro-chemical process was investigated to extract alumina. The influences of NaOH concentration, mass ratio of ...

Chapte r 15. Gravity Separatio n

process . No t all mineral combinations are amenabl e to this type of concentration technique. To determin e the suitability of gravity separation processes to a particular ore type, a concentration criterion is commonl y used . A concentratio n criterion (CC ) can be define d as [1] : . . . SG o f heav y mineral-S G of fluid,<-,..

Separation Of Gangue From Coal Based On Histogram …

2013-11-25 · Coal gangue is residual abandoned coal, produced after the pre-processing steps of mining. It is an amalgam of several unwanted substances. It is important to separate coal gangue from lump coal before fed to thermal power plants. In this paper, investigation on the fundamental characteristics of coal images and gangue images with digital image processing technology is …

Influence of coal gangue mulching with various …

2021-7-28 · The effects of coal gangue and fly ash on the hydraulic properties and water content distribution in reconstructed soil profiles of coal-mined land with a …

Coal gangue detection and recognition algorithm based …

2021-9-8 · 4.1 Design and implementation of coal gangue detection and recognition device. This study proposes an method for coal gangue detection and recognition on the basis of the DCN-YOLOv3 algorithm. Firstly, the method collects real-time video images of a conveyor belt operation through an industrial camera erected perpendicular to the conveyor belt.

Jammu concentrator processing coal gangue

Coal Gangue Sorting System HXS Intelligent Dry Typ. Coal gangue identification flowchart Technical features Wide processing size range It can handle 30 600mm raw coal The upper limit of separation is 600mm and the lower limit is 30mm High separation accuracy The rate of gangue removing is over 95 the rate of coal in gangue is less than 2 and the separation effect is …

Image Processing Based on Gray Information in Sorting …

2018-8-26 · The intelligent sorting system of coal gangue can be realized through automatic sorting technology based on machine vision and mechanical arms with independent control. Image processing is the key technology of sorting system. Through the image processing of coal and gangue characterization, it is convenient and quick to solve the problem of ...

Research on methods to differentiate coal and gangue …

This article proposes a method that can be used to improve the differentiation of coal and gangue via image processing and use of a support vector machine (SVM). Images of coal and gangue were converted to grayscale in this approach, the background was …

Thermal decomposition of selected coal gangue

2017-9-20 · As the main solid waste in the mine, the coal gangue is considered as one of the most concerned objects in the current crossing field between the geological sciences, environmental sciences and material science [].When the advanced technology and process are applied to comprehensively utilize the coal gangue, the energy will be saved and the …

Comprehensive utilization and environmental risks of coal …

2019-12-1 · In addition, the composition of coal gangue is closely associated with coal mining process. At present, the comprehensive utilization of coal gangue is mainly selected according to the carbon content and calorific value. Coal gangue with a high carbon content (>20%) is commonly used for power generation and heating.

Ulhasnagar concentrator processing coal gangue

Coal Gangue Sorting SystemHXS Intelligent Dry Type. Coal gangue identification flowchart Technical features Wide processing size range It can handle 30 600mm raw coal The upper limit of separation is 600mm and the lower limit is 30mm High separation accuracy The rate of gangue removing is over 95 the rate of coal in gangue is less than 2 and the separation effect is …

Field study on the improvement of coal gangue filling …

2021-5-5 · Large pieces of coal gangue were selected to fill the pond until the fill height was at the surface of the water. Ordinary coal gangue was used to fill the pond with a bulldozer until the height reached the design elevation + 1.0 m (1.0 m for the expected settlement). The coal gangue was rolling compacted during the filling process .

mineral processing equipment coal gangue concentrator

2020-6-11 · Coal gangue processing Dewo Machinery. Coal gangue introduction: Coal gangue is a rock mixed with organic and inorganic compounds co-deposited with coal during coal formation ually in a thin layer and in the coal seam or in the top of the coal seam, the bottom of the coal seam om the perspective of coal mining, domestic coal mines produce ...

Utilization of coal gangue for the production of brick

2016-6-8 · Coal gangue, an industrial solid waste discarded from coal mining and processing, was used as the sole raw material to prepare brick. The coal gangue was crushed, homogenized, milled and then pressed into green compacts. The dried compacts were sintered at different temperatures for 2 h. The obtained brick samples were characterized with X-ray diffraction, …