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quality control of coal mining

Evaluation of eco-environmental quality for the coal

2022年4月22日  The high-intensity mining area (previously mined area of Ili No.4 Coal Mine) has the worst ecological environment quality, followed by the coal reserve area of

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Research and practice of intelligent coal mine technology

2022年4月15日  The top-level architecture of 5G+ intelligent coal mine systems combines intelligent applications such as autonomous intelligent mining, human–machine

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(PDF) Coal Quality Control with Control Charts

COAL QUALITY CONTROL WITH CONTROL CHARTS 197. Calorific values, ash contents, and moisture contents of coals sold to. er Plant vary within shor t time periods. Addition-.

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Geostatistical coal quality control in longwall mining

2010年3月1日  Quality of ROM coal depends not only in-situ quality of coal but also the mining method applied, i.e., dilution of top coal during caving is of major importance.

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Study on Whole Process Quality Control in Coal

2019年1月28日  The poor quality of raw coal in mining process would influence the clean coal quality obviously. The main performance is that the mining process can’t provide

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Assessment of air pollution around coal mining area:

2014年1月1日  Sites near coal mining areas resided under heavily polluted category on API. CA showed that pollution behavior of sites changed in different seasons. PCA

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Coal Quality Control in Mining Complex-Structure Deposits

2020年1月6日  The schemes are proposed for ash content control in coal mining through extraction of dirt and high-ash interbeds of various thickness. The process charts for

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Coal Quality Control in Mining Complex-Structure

2019年5月1日  The proposed approach to the differentiation of ash of the coal in complex structural deposit (like the Elginskiy) and the developed methodology for the assessment

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Coal quality control techniques and selective grinding as

2013年6月30日  Quality control of lignite produced by continuous surface mining, using statistical methods. Scientific Journal of the TCG (V) 1-2: pp. 49-61. Homogenization of

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Research and practice of intelligent coal mine technology

2022年4月15日  This study considered the role of coal as China’s basic energy source and examines the development of the coal industry. We focused on the intelligent development of coal mines, and introduced the “Chinese mode” of intelligent mining in underground coal mines, which uses complete sets of technical equipment to propose classification and

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The view of technological innovation in coal industry

2021年9月4日  Technologies should be researched and developed for fine heavy-medium separation of coal, high-efficiency dry coal preparation, coal product quality monitoring and intelligent control of the coal preparation process, modular washing with a capacity of 10 million tons per year, and the comprehensive utilization of coal slime in mining areas.

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Planning for Reliable Coal Quality Delivery Considering

2014年8月20日  The aim of coal quality control in coal mines is to supply power plants daily with extracted raw material within certain coal quality constraints. On the example of a selected part of a lignite deposit, the problem of quality control for the run-of-mine lignite stream is discussed. The main goal is to understand potential fluctuations and deviations

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Global evolutional trend of safety in coal mining industry:

2023年4月1日  Mining safety is recognized as one of the factors influencing the mining industry’s long-term viability. Therefore, we did a bibliometric analysis to take stock of safety management in the coal mining industry. This study suggests a three-step strategy, comprising literature extraction and screening, bibliometric analysis, and discussion, to

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Evaluation of the soil profile quality of subsided land in a

2021年8月15日  Underground coal mining leads to land subsidence, and the situation is particularly serious in the Coal-Grain Complex in eastern China, causing the crop production to be reduced or to be taken out. Backfilling with Yellow River sediment is one of the effective methods to solve the land subsidence in this area, but a key issue is how to

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Risk Assessment and Control Strategy of Residual Coal

2021年3月3日  The water resources of mining areas in western China are extremely short [].The degree of land desertification is high, the surface is covered with thick aeolian sand, the ecological environment system is very fragile, and soil erosion is very serious [].At the end of the 20th century, the room and pillar (RP) mining method was widely used in the

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Quality Assurance for the Coal Industry - Cotecna

2021年4月27日  Coal is an essential commodity used as fuel for energy and raw material in the production of metals and chemicals. As of 2016, coal provided about a quarter of the world's primary energy and two-fifths of electricity usage. Proper quality control is imperative for producers to minimize costs, improve operations, and reduce emissions.

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Nondestructive testing of bolt support quality and stability

2017年1月1日  During the mining stage, stresses build up in the surrounding rocks of the face. The abutment pressure appears in the front of the face for about 20~30 m. Within this mining influence zone, the axial bolt load increases to about 80~120 kN, namely within 80% of the yield load. But in some area under complex geological conditions, the axial bolt ...

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Process of Coal Quality Control PDF Coal Operations

2012年11月11日  The steps of whole process quality control which based on the industry engineering is as follows: (1)To Choose out the reasonable quality control index based on practice and experience in production, define the index control range scientifically. (2)To determine the most important control process in production.

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Coal quality control techniques and selective grinding as

2013年6月30日  Quality control of lignite produced by continuous surface mining, using statistical methods. Scientific Journal of the TCG (V) 1-2: pp. 49-61. Homogenization of quality of lignite mined from the ...

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International Best Practices Regarding Coal Quality

2018年6月7日  coal consumption continues to rise, especially in Asia . China and India alone are responsible for nearly all of the growth in global coal consumption since 2000 . We know that the emissions characteristics of coal combustion are substantially influenced by the type and processing of coal used; it is also true that the quality of coal affects the

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Planning for Reliable Coal Quality Delivery Considering

2014年8月20日  The aim of coal quality control in coal mines is to supply power plants daily with extracted raw material within certain coal quality constraints. On the example of a selected part of a lignite deposit, the problem of quality control for the run-of-mine lignite stream is discussed. The main goal is to understand potential fluctuations and deviations

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Safety Technology Risks and Countermeasures

2022年4月22日  In the past 10 years, the coal industry has made a number of key breakthroughs in the innovation and R D of intelligent mining technology, and mining equipment, modern intelligent, green, safe,

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Evaluation of the soil profile quality of subsided land in a

2021年8月15日  Underground coal mining leads to land subsidence, and the situation is particularly serious in the Coal-Grain Complex in eastern China, causing the crop production to be reduced or to be taken out. Backfilling with Yellow River sediment is one of the effective methods to solve the land subsidence in this area, but a key issue is how to

Read More
Risk Assessment and Control Strategy of Residual Coal

2021年3月3日  The water resources of mining areas in western China are extremely short [].The degree of land desertification is high, the surface is covered with thick aeolian sand, the ecological environment system is very fragile, and soil erosion is very serious [].At the end of the 20th century, the room and pillar (RP) mining method was widely used in the

Read More
Quality Assurance for the Coal Industry - Cotecna

2021年4月27日  Coal is an essential commodity used as fuel for energy and raw material in the production of metals and chemicals. As of 2016, coal provided about a quarter of the world's primary energy and two-fifths of electricity usage. Proper quality control is imperative for producers to minimize costs, improve operations, and reduce emissions.

Read More
Nondestructive testing of bolt support quality and stability

2017年1月1日  During the mining stage, stresses build up in the surrounding rocks of the face. The abutment pressure appears in the front of the face for about 20~30 m. Within this mining influence zone, the axial bolt load increases to about 80~120 kN, namely within 80% of the yield load. But in some area under complex geological conditions, the axial bolt ...

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Prevention and Control of Hydrogen Sulphide

2020年9月28日  Hydrogen sulphide is a toxic gas often present in coal seams and seriously threatens the lives and health of underground workers in coal mines. In this study, we theoretically modelled hydrogen sulphide

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Coal quality control techniques and selective grinding as

2013年6月30日  Quality control of lignite produced by continuous surface mining, using statistical methods. Scientific Journal of the TCG (V) 1-2: pp. 49-61. Homogenization of quality of lignite mined from the ...

Read More
Process of Coal Quality Control PDF Coal Operations

2012年11月11日  The steps of whole process quality control which based on the industry engineering is as follows: (1)To Choose out the reasonable quality control index based on practice and experience in production, define the index control range scientifically. (2)To determine the most important control process in production.

Read More

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