Components Of Gangue

Identification and Activation of Coal Gangue and …

Therefore, thermal analysis results show that the main components of the gangue sample are kaolinite, and a small amount of coal and the kaolinite content can be calculated through the weight loss in N 2 atm. which is 84.93%. Fig. 2. Thermal analysis curve of raw gangue. Full size image.

Common Gangue Minerals | SpringerLink

The most common gangue minerals have been selected in Table 133.1, identifying them with the same symbols (abbreviations) as in Annex 1.3 (Gangue). As Table 133.1 shows, most of the gangue species are classified in only two of the Berzelius classes, namely (in approximate order of decreasing abundance and noting the main families within the classes): ...

Environmental hazards and comprehensive utilization of

Coal gangue pollution components can be released into the soil surface water not only by direct weathering of the coal gangue, but also through the process of "coal-water" interaction, where pollutants are released into the external environment as leachate [29]. Consequently, these pollutants can reach the surrounding land and groundwater.

The effect of biomass addition on pyrolysis

Coal gangue has the characteristics of high ignition temperature, high ash content and low volatile matter. ... Component 5 mainly occurs in the range of 225–610 °C, which is due to the decomposition of lignin. Table 2. Participation degree and R 2 of each component in the multi-component model of PS pyrolysis reaction. Degree of participation

Mineral processing | Metallurgy, Crushing

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 …

Extraction of valuable components from coal gangue …

Coal gangue has the dual attributes of hazard and resource. With the increasing awareness of resources conservation and ecological sustainability, the high-value utilization of coal gangue has attracted active attention. In this research, thermal activation followed by HNO 3 leaching were performed to extract valuable components from coal ...

1 Froth Flotation – Fundamental Principles

separating sulfide minerals from silica gangue (and from other sulfide minerals); separating potassium chloride (sylvite) from sodium chloride (halite); separating coal from ash-forming ... Figure 1: The flotation system includes many interrelated components, and changes in one area will produce compensating effects in other areas (Klimpel, 1995)

Preparation of Poly Aluminum-Ferric Chloride (PAFC) …

1. Introduction. The coal gangue accounts for about 10–20% of coal production, and it is one of the largest industrial solid wastes emitted in China [1,2].It occupies land and pollutes the atmosphere and water [3,4], so carrying out comprehensive utilization of coal gangue is one of the important ways to solve these problems.The traditional utilization methods are …

Preheating pyrolysis-char combustion characteristics and …

In order to investigate the removal ratio of combustible components in coal gangue by this equipment, the test of self-sustainable direct combustion decarbonization in a 300,000 tons/year demostration project were carried out, and the coal gangue raw materials and corresponding export products were analyzed.

Effect of Gangue Minerals on Hydrophobic Recovery of …

The effects of silica gangue and high sulphide gangue on gold attachment were examined including the effect of surface activators (potassium amyl xanthate) and the possibility of depressing the ...

Full-components utilization: Study on simultaneous …

The mineral composition of coal gangue was analyzed using X-ray diffraction (XRD), and the results are shown in Fig. 1 a. Combined with the chemical composition analysis, it can be known that the main mineral components of the coal gangue sample are kaolinite, with small amounts of muscovite and quartz.

Study on the macro–micro evolution of compaction

The experimental results show that the main components of gangue include oxides of silicon, aluminium, calcium and titanium, with calcite having the largest percentage. …

Common Gangue Minerals | SpringerLink

The most common gangue minerals have been selected in Table 133.1, identifying them with the same symbols (abbreviations) as in Annex 1.3 (Gangue). As Table 133.1 …

Explanation of heavy metal pollution in coal mines of china

The chemical components of coal seams and coal gangue in different mining areas and different geological ages are quite different. In order to realize the harmlessness, resource treatment, and utilization of coal gangue in China, it is necessary to conduct in-depth research on the geochemical characteristics of pollution components such as ...

Ore, Composition and Classification of | SpringerLink

Ore is a mineral aggregate mined from an ore body from which useful components (elements, compounds, or minerals) can be extracted under existing technical and economic conditions. ... Ores generally consist of ore minerals and gangue minerals. Ore minerals, also called useful minerals, refer to metal or nonmetal minerals that can be utilized ...

Comprehensive utilization and environmental risks of coal …

Coal gangue has been applied in building material, energy, agriculture and other industries. ... (Al/Si < 0.3), the main components of coal gangue are quartz and feldspar, and the plasticity is poor because of little clay mineral and large particle size; for the second class …

High-capacity utilization of coal gangue as

Extraction of valuable components from coal gangue through thermal activation and HNO3 leaching J. Ind. Eng. Chem., 113 ( 2022 ), pp. 564 - 574 View PDF View article View in Scopus Google Scholar

Environmental hazards and comprehensive utilization of

Coal gangue pollution components can be released into the soil surface water not only by direct weathering of the coal gangue, but also through the process of "coal-water" …

Gangue Mineral

The dielectric properties of ferrum are higher than other surrounding mineral components, which proves that the rapid heating of ferrum in a microwave transparent matrix create micro-fissures along ferrum boundaries. To conclude, gangue minerals have little effect on MH of coal as they barely absorb microwave energy.

Gangue Mineral

The dielectric properties of ferrum are higher than other surrounding mineral components, which proves that the rapid heating of ferrum in a microwave transparent matrix create micro-fissures …

Influence of biomass on multi-component reaction model

Request PDF | Influence of biomass on multi-component reaction model and combustion products of coal gangue | The effects of biomass on coal gangue combustion characteristics, combustion products ...

Separation and Recovery of Valuable Carbon …

Coal gangue (CG), an industrial solid waste with high contents of Li and Ga, has attracted the attention of researchers. However, the utilization of CG remains an economic challenge. Pre-enrichment of Li and Ga by flotation …

A review of coal gangue identification research

Top coal caving is a process for the rational extraction of large amounts of coal resources. However, this process readily causes release of excessive amounts of gangue during the coal release process. The conventional technique, which involves visual inspection, is not only labor-intensive but also can introduce inaccuracies. Coal and gangue identification methods …

Complementary advantages of spent pot lining and coal gangue …

For extracting valuable components, Spent pot-lining and coal gangue were co-treated by hydrothermal acid-leaching method in this study. Effect of adding spent pot-lining on impurities leaching ...

Aluminum extraction from activated coal gangue with …

A new coal gangue(CG) activation additive was studied in this paper, carbide slag(CS) was used as an auxiliary agent on the extraction of Al 2 O 3 from coal gangue activated by Na 2 CO 3 through acid leaching. The dissolution rate of Al 2 O 3 was determined by Inductively Coupled Plasma-Atomic Emission Spectrometer(ICP-AES) and calculated using …

Full-components utilization: Study on simultaneous …

Coal gangue is the solid industrial waste discharged in the processes of coal mining and washing, accounting for about 15–20 % of coal production [1], [2]. Based on incomplete statistics, the accumulated storage of coal gangue in China has exceeded 600 million tons and continues to escalate at a pace of 300–350 million tons annually.

Effects of the variety and content of coal gangue coarse …

By comparing the chemical constituents and mineral components of coal gangue with the classification standard of rock [19], [20], it can be preliminarily determined that both R and S are types of sandstone gangue and that their properties are similar to those of N, so they are suitable for use as aggregates in concrete.

(PDF) Effect of Gangue Distribution on Compressive

The experimental results confirm that gangue components have little effect on the wet compressive strength. However, the dry compressive strength increases with the addition of gangue in the fine ore.

Effects of reducing environment and fusible components

Coal gangue (CG) produced in coal mining and washing is one of the largest industrial solid wastes in China [1]. ... The fusible components including CaO, Fe 2 O 3, and MgO in the raw materials had various effects on the CRN reaction of mullite and micromorphology of the product. Although their additions to the raw materials led to the ...

Enhancement of coal gangue performance by surface micro …

For instance, the coal gangue stacked outside is prone to spontaneous combustion and release of CO 2, NO x, H 2 S and SO 2 (Zhai et al., 2017). Soluble components of coal gangue, including heavy metals and aromatic compounds, are easily leached into soil and water bodies by rainfall (Zhang and Ling, 2020). Resource utilization of coal gangue is ...