The Potential Use of Waste Rock from Coal Mining …
It is possible to use waste rock during coal mining in Dong Trieu and Quang Ninh areas as aggregates in concrete production. ... A.I., Fomina, O.A.: Use of coal …
Leaching and geochemical behavior of fired bricks containing coal …
The goal is to assess the effect of thermal treatment on the leaching quality of fired bricks containing coal wastes. Two types of coal wastes were evaluated: coal waste rock (CMWR) and corresponding treated coal tailings (TCMT). A reference brick containing only natural shales (ShB) is used as a reference material.
Use of overburden rocks from open-pit coal mines and waste …
It was established that a homogeneous, defect-free brick texture obtained from overburden rocks of open-pit mines and waste coal improves the quality of ceramic wall materials produced by the ...
Utilization of Coal Dust Waste in Bricks-A …
An effort has been made to manufacture bricks out of coal dust waste by varying its proportion such as 50%, 60%, 70% 75% and 80% by weight of brick. The …
(PDF) Sustainable use of mine waste and tailings with …
Utilization of mine waste rocks and tailings in concrete as aggregates will help in sustainable and greener development. The literature shows the potential use of iron ore tailings as a ...
Coal mine wastes recycling for coal recovery and eco …
The feasibility to recover coal and produce fired bricks from coal mine waste rocks was investigated in this study. After a thorough characterization of raw materials, conducted laboratory tests confirmed the feasibility of reusing coal mine waste rocks …
(PDF) Fabrication and application of porous materials made from coal
Taha et al. 42 used coal mine waste rock and . ... (TCMT: treated coal mine tailings; CMWR: coal mine waste rocks; Shb: The shale for brick) 42. 17447402, ja, Downloaded from https://ceramics ...
Potential Use of Coal Mine Overburden Waste Rock as …
This paper presents utilization of waste rock of surface coalmine in making bricks and blocks in place of clay bricks. These bricks and blocks may be used in building construction and as pavement ...
Chemical composition of waste coal. | Download Table
Download Table | Chemical composition of waste coal. from publication: Use of overburden rocks from open-pit coal mines and waste coals of Western Siberia for ceramic brick production with a ...
-Coal production and overburden removal from mines
The annual coal production from opencast coal mines in India was about 328 MT and overburden waste material of 535.08 Mm 3 [4]. The current annual production of coal ash is estimated around 600 ...
Use of Coal-Mining and Processing Wastes in …
bricks requires 2.5 m 3 of rock refuse ("tailings") as a raw material. ... The aim of this work was to study the use of coal waste to produce concrete paving blocks. …
Mine Waste Rock
Coal wastes: handling, pollution, impacts, and utilization. Soheil Jahandari, ... Maroun Rahme, in The Coal Handbook (Second Edition), 2023. 4.9.1 Waste rock or overburden. Coal mine waste rock (CMWR) generated in coal mining activities is one of the most significant sources of industrial solid waste. Nearly 4.5 billion tons of CMWR stockpiled …
Utilization of Coal Dust Waste in Bricks an Experimental …
Coal Dust waste can be a good option for preparing bricks or blocks for low-cost construction. An attempt to use coal dust waste in the preparation of bricks has been made in this study. Coal dust waste is collected from the Korba area of Chhattisgarh and brick samples are prepared with different configurations.
New technology and application of brick making with coal …
China has ranked first in the coal fly ash emission in the world. The multipurpose use of the fly ash from power plant waste is always an important topic for the Chinese environmental protection ...
The macrostructure of ceramic brick made from waste coal …
Figure 3 shows the macrostructure of ceramic bricks from waste coal prepared by the traditional method produced at Abashevskiy Brick Factory in the 1990's ( figure 3, a-c) and by the developed ...
Effect of clay fraction on the mechanical properties and
1. Introduction. Waste rock fine (WRF) is a kind of by-products generated from the manufacturing and washing process of crushed aggregates. Its water content is approximately 20∼50% and exhibits a high viscosity, therefore it is inevitably confronted with many problems related to management, transportation, and recycling (Altheeb, …
Sustainable use of phosphate waste rocks: From …
1. Introduction. Mining industries and especially open pit operations generate a large volume of waste rocks. A waste rock is the non-economic part material that should be blasted to access the ore body of interest [1, 2].Open pit mining is known by the high wastes production rates compared to underground mining operations.
Utilization of coal fly ash in China: a mini-review on
China is the largest coal consumer around the world, and coal accounts for more than 60% of the country's energy mix (Peng et al. 2018; Wang et al. 2019).Coal fly ash (CFA), a solid waste produced by coal-fired thermal power plants during the combustion of pulverized coal, is currently one of the largest solid wastes in China (Yao et al. 2015).In …
(PDF) The Potential Use of Waste Rock from Coal Mining for …
It was established that a homogeneous, defect-free brick texture obtained from overburden rocks of open-pit mines and waste coal improves the quality of ceramic wall materials produced by the ...
Use of Coal Waste as Fine Aggregates in Concrete Paving …
The aim of this work was to study the use of coal waste to produce concrete paving blocks. The methodology considered the following steps: sampling of a coal mining waste; gravity separation of the fraction with specific gravity between 2.4 and 2.8; comminution of the material and particle size analysis; technological characterization of …
Waste Materials in Construction, Utilization of | SpringerLink
Huge amounts of recycled materials such as coal combustion products (CCPs), construction and demolition (C&D) materials, spent foundry sand, used tires, and slags are potentially usable in building construction applications. Reusing and recycling C&D materials onsite can reduce material hauling and disposal costs.
Brick production and characterization containing coal mining waste
The disposal of coal mining waste is also a significant problem. The study was conducted to examine the usability of coal mining wastes as a brick building material. The study has involved the addition of coal mining wastes obtained from different stages of coal production processes, which are pulverized by dry grinding, into the brick clay in ...
Recycling utilization patterns of coal mining waste in China
Fly-ash and coal gangue are the two main industrial solid waste in China. The chemical compositions (shown in Table 1) were SiO 2, Al 2 O 3, Fe 2 O 3 and some impurities. As the coal gangue is main solid waste for coal mining, one of the most common approaches to waste rock is to stack construction that encapsulate the most …
Comprehensive utilization and environmental risks of coal …
On the other hand, the accumulation of waste rocks, such as coal gangue, consumes a significant amount of land resources and poses environmental hazards, severely affecting green production [8 ...
Potential Use of Coal Mine Overburden Waste Rock as …
Coal is the cheapest and thus the preferred energy source in developing countries. A huge volume of coal mine waste rock, which is known as overburden (OB), is generated due to the surface mining of coal. Due to convenience and the restricted space, the OB is dumped adjacent to the mining area in huge tracts of usable land at large …
Utilization of coal gangue for the production of brick
Abstract. 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 ...
Sustainability | Free Full-Text | Utilization of Coal Gangue Aggregate
As a massive solid waste, the high value-added utilization of coal gangue has received more and more attention in China. This study focuses on the utilization of coal gangue aggregate in railway engineering for coal transportation passage. Coal gangue aggregate was employed as high-grade railway subgrade filler andprepared …
Coal wastes: handling, pollution, impacts, and …
Utilization routes of coal waste rock. 4.9.2. Gangue. CG is a residue generated in the washing and mineral processing of coal ... the Nu-Rock bricks were …
Recycling of the Waste Rock and Tailings from Yangyang Iron Mine
Non sintered eco-brick corresponding to class 1 quality of recycled clay brick (KS I 3013) can replace 15% of cement with tailings and of general fine aggregate with waste rock from iron mine ...
Comprehensive utilization and environmental risks of coal …
Comprehensive Utilization of Coal Gangue. Zuo Peng-fei. Environmental Science, Engineering. 2009. The coal gangue is a kind of solid wastes from coal mining and separating,which is also a kind of grey-black rock harder than coal,characterized by low content of carbon and association with coal….