The coal gangue in China is the core field of bulk solid waste comprehensive utilization due to its massive stock and emission, high concentration of output, small proportion of high-value-added utilization, and outstanding environmental impact. Hence, the prospect of resource utilization of coal gangue is broad. The existing disposal …

gangue crusher solved this problem totally with the one stage crushing replacing the traditional two-stage crushing. gangue crusher has a high performance with a long life usage of key resistant material (hammer) than normal hammer. What's more, the examination and repair is very simple, for example, one person can …

The aim of this study was to prepare a Si-K-based amendment by coal gangue and plant ash and clarify its feasibility for improving the growth of maize plants in saline soils.The Si-K-based amendment was prepared by mixing the coal gangue and plant ash and calcining at 500–900 °C for 0.5–2.5 h. A pot experiment was carried out to …

The gangue slurry preparation station is arranged near the grouting filling borehole, and the gangue of the gangue hill is broken and sieved into different particle size filling raw gangue by a jib crusher, a roller sand making machine, a ball mill, etc. and mixed with water according to a certain ratio and concentration to prepare a pure ...

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 …

The coal gangue crusher can crush, sand, and screen the coal gangue, transforming it into various particle sizes such as 0-5-10-20-30mm. After professional processing with …

1. Jaw crusher. As a kind of coarse crushing equipment, it is generally used in the first crushing procedure. The characteristics of a jaw crusher are strong crushing capacity, strong and durable, and a large crushing ratio. It is mainly used for coarse crushing of large pieces of coal gangue, and the feedstock is less than or equal to …

Abstract. Since for granulation processes the crusher operation has a decisive influence on the system stability, a reliable mathematical model to represent an industrial double-roll crusher of a urea granulation circuit is provided in this work. The crusher was described by the model given by Austin et al. [Austin L.G., Van Orden …

Semantic Scholar extracted view of "Using recycled gangue to capture CO2 and prepare alkali-activated backfill paste: Adsorption and microevolution mechanisms" by Binbin Huo et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 219,572,714 papers from all fields of science ...

For example, Zhang H et al. [19,20] conducted leaching tests on coal gangue in the laboratory to study the migration mechanism and laws of harmful metals in coal gangue. The concentration of each …

1615 H]ammer Crusher 300t/h Limestone Gangue Large Stone Crusher. No reviews yet. Henan Rockwell Machinery Co., Ltd. Custom manufacturer 1 yr CN . Key attributes. Other attributes. Applicable Industries. Building Material Shops, Construction works, Energy & Mining. Showroom Location.

A single hammermill crusher can break coal into shape at one time, integrating coarse and medium crushing, saving process and investment costs. The …

24. In the EDEM simulation, the particle generation speed was 5,000 per/s and the initial velocity was 9.8m/s2. The total bonding number was 152627. The particle replacement time was 0.1s, bonding time was 0.1005s and the time step was 1.5%, the total simulation time was 40s and the mesh size was 150mm. 3.2.

2.2. Methods and processes2.2.1. Mechanical and thermal activation. Coal gangue samples were initially crushed using Jaw crusher (PE60X100), then ground using a planetary mill (QM-3SP2) and sieved to 60–100 mesh (0.25–0.15 mm) to obtain As-received samples.As-received samples then ground using a planetary mill (QM-3SP2) …

Product description. Double stage crusher cooperates with trommel screen, which is a common technology for crushing coal gangue in brick factories. After the first crushing of double stage crusher, the discharging granularity of material less than 3MM can reach about 80%. But because bricks require high fineness of coal gangue, so often ...

The environmental characteristics of usage of coal gangue 2014-1-1 The main chemical compositions of coal gangue are SiO 2 (54–60%), Al 2 O 3 (23–27%), Fe 2 O 3 (6–9%) and CaO (7–11%), which are deemed a suitable raw material for brick making (Raut et al., 2011).The high SiO 2 and Al 2 O 3 contents in the coal gangue suggested high …

Section snippets Materials. Coal gangue samples are taken from Changcun Coal Mine in Lu'an Coal Mining Industry of Shanxi. Coal gangue was crushed and sieved to 60–100 meshes (0.15–0.25 mm) using E's crusher (PE60X100) produced from Hongyu Instrument and Equipment Co., Ltd., Hebei, China.The prepared coal gangue samples, …

The cement rotary kiln is the main equipment in the production line of the cement plant. Henan Hongke Heavy Machinery Co., Ltd. is specialized in mining machinery manufacturing, integrating scientific research, production and marketing. With development of market economy, we become a dazzling star in China's machinery industry.

Recent Patents on Roll Crushing Mills for Selective Crushing of Coal and Gangue. January 2020. Recent Patents on Mechanical Engineering 13 (1) DOI: 10.2174/2212797613666200109112255. Authors ...

The coal gangue vertical compound crusher can achieve more crushing and less grinding and is an ideal fine crushing equipment for energy saving and consumption reduction. Its main features are a …

The chemical components of coal gangue are SiO2, Al2O3, and Fe2O3, which account for more than 80% of coal gangue, and Al2O3 accounting for 20% to 35%[3].The ... less than 5 mm with a jaw crusher and then pulverized to less than 0.12 mm with a ball mill. The processed sam-ples were dried at 105°C for 24 hours. Table 1 and Fig. 1

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of gangue minerals (quartz, dolomite, calcite, chlorite and talc). On the other hand, researchers from the former Soviet Union applied photometric and radiometric separation to magnesite deposits with dolomite, calcite, chlorite and quartz as gangue minerals, with particle size 8-150 mm (Rogozina et al., 1989, 1990).

(2) A crusher was used to crush gangue to less than 30 mm. (3) By using stone screens with square hole sizes of 5, 10, 15, 20, 25 and 30 mm, the crushed gangue was screened. The screened gangue particles with different particle sizes are shown in Fig. 2. (4) The crushed gangue with different particle sizes was mixed in accordance with …

The mobile crusher can process more than 200 kinds of materials, such as bluestone, quartz ore, building waste, in many fields, such as mining, road construction, water conservancy, and so on. Besides, they are …

Figure 5 shows the breaking process for coal gangue with a counterattack crusher. The gangue materials are piled up around the crawler and transmitted to the counterattack crusher through the crawler. ... Liu S.H., Lan X.J., Gao H. Complex Activation of Coal Gangue to Al Compounds. Adv. Mater. Res. 2011; 402:734–737. doi: 10.4028/

The acid method is a commonly used method because of its high efficiency and simple operation. Ren et al. prepared Al(OH) 3 from coal gangue by acid method, and the extraction rate of Al 2 O 3 in coal gangue reached 81.8% (Ren, 2012). Furthermore, the activation of coal gangue also contributes to the precipitation of useful elements.

When crushing coal gangue, it should go through three processes of "coarse-middle-fine crushing". Roll crusher. 2. Grinding and maintaining frequently. The surface of the roll crusher is easily worn to grooves and makes the gap between the rolls larger, thereby reducing the crushing effect.

Introduction. Coal gangue is a complex industrial solid waste discharged when coal is excavated and washed in the production course. Its major chemical composition is SiO 2 and Al 2 O 3, and its major mineralogical composition is quartz and feldspar [1].The amount of coal gangue accumulated in China has already reached 3.8 …

Coal is one of the primary sources of energy worldwide and plays a significant role in economic development (Zhang et al. 2019a, b, c; Gao et al. 2018).The healthy development of the coal industry is crucial for energy security and sustainable economic growth (Chen et al. 2020a, b; Xu et al. 2020).While coal has made …