Study Relationship between Inorganic and Organic Coal Analysis with Gross Calorific Value by Multiple Regression and ANFIS

Chelgani, S. Chehreh; Hart, Brian; Grady, William C.; Hower, James C.

doi:10.1080/19392699.2010.527876

Cited by 35 publications

(11 citation statements)

References 8 publications

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“…The sign of the Pearson shows the direction of the interaction. Typically, -0.6 \ r \ 0.6 shows that there is a strong interaction between two parameters (Chehreh Chelgani et al 2011aChelgani et al , b, 2016a. (Table 3) were designed based on selected effective variables (Table 2) to find the optimum points of each parameter.…”

Section: Experimental Methods and Proceduresmentioning

confidence: 99%

“…During decades, tons of valuable coal particles are accumulated at tailing dams of washing plants due to different problems which were associated by old technologies and complexity of coal processing. On the other hands, demanding growth for high quality coal products from various industries (power plants, cement, paper production and sponge iron units) and decreasing the number of high grade raw coal deposits (Chehreh Chelgani et al 2011a, b;Royaei et al 2012;Chehreh Chelgani and Makaremi 2013;Dey et al 2015;Matin and Chehreh Chelgani 2016) have been complicated coal beneficiation methods and subjected enormous volume of coal particles to wastes (tailing dams). Coal wastes typically can be used in different industries such as building and road making; however, these applications are limited and a huge amount of coal particles are accumulated as dump sand pulps in the tailing dams.…”

Section: Introductionmentioning

confidence: 99%

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Recovery of coal particles from a tailing dam for environmental protection and economical beneficiations

Asghari

Noaparast

Shafaie

et al. 2018

Int J Coal Sci Technol

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Considerable amounts of coal particles are accumulated in the tailing dams of washing plants which can make serious environmental problems. Recovery of these particles from tailings has economically and environmentally several advantages. Maintaining natural resources and reducing discharges to the dams are the most important ones. This study was examined the possibility to recover coal particles from a tailing dam with 56.29% ash content by using series of processing techniques. For this purpose, gravity separation (jig, shaking table and spiral) and flotation tests were conducted to upgrade products. Based the optimum value of these processing methods, a flowsheet was designed to increase the rate of recovery for a wide range of coal particles. Results indicated that the designed circuit can recover over 90% of value coal particles and reduce ash content of product to less than 14%. These results can potentially be used for designing an industrial operation as a recycling plant and an appropriate instance for other areas to reduce the environmental issues of coal tailing dams.

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Section: Experimental Methods and Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recovery of coal particles from a tailing dam for environmental protection and economical beneficiations

Asghari

Noaparast

Shafaie

et al. 2018

Int J Coal Sci Technol

View full text Add to dashboard Cite

show abstract

“…In this case, since the p -value indicates the degree of rejection of the null hypothesis that the independent variable affects the dependent variable, it can be judged that the smaller the p -value, the more significant the effect [ 11 ]. Since the standardization factor (β) is an indicator of the influence of each independent variable on the dependent variable, the larger the value, the more independent variables affect the dependent variable [ 12 ].…”

Section: Applicability Of the 2 Mhz Side Scan Sonarmentioning

confidence: 99%

Development of a 2 MHz Sonar Sensor for Inspection of Bridge Substructures

Park¹,

Kim²,

Lee³

et al. 2018

Sensors

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Hydraulic factors account for a large part of the causes of bridge collapse. Due to the nature of the underwater environment, quick and accurate inspection is required when damage occurs. In this study, we developed a 2 MHz side scan sonar sensor module and effective operation technique by improving the limitations of existing sonar. Through field tests, we analyzed the correlation of factors affecting the resolution of the sonar data such as the angle of survey, the distance from the underwater structure and the water depth. The effect of the distance and the water depth and the structure on the survey angle was 66~82%. We also derived the relationship between these factors as a regression model for effective operating techniques. It is considered that application of the developed 2 MHz side scan sonar and its operation method could contribute to prevention of bridge collapses and disasters by quickly and accurately checking the damage of bridge substructures due to hydraulic factors.

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“…As a result of analysis, the distance between water depth and structure showed a major influence on angle of the towfish. In this case, since the value, which is probability of significance, indicates the degree of rejection of the null hypothesis that the independent variable affects the dependent variable, it can be judged that the smaller the value is, the more significant it is [14,16]. The larger value and the more independent variables affect the dependent variable because the standardization factor ( ) is an indicator of the influence of each independent variable on the dependent variable [17].…”

Section: Journal Of Sensorsmentioning

confidence: 99%

A Study for Optimum Survey Method of Underwater Structure Using the Dual Sonar Sensor

Kim¹,

Lee²,

Park³

et al. 2017

Journal of Sensors

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We have developed dual sonar equipment and an improved operating method for improving resolution in order to solve the problems of limitations of the optical equipment and the application method of SSS (side scan sonar) in the investigation of damage of underwater structures. We analyzed the influence factors of the resolution of sonar data through the comparison of resolution and data quality in indoor test. Also we confirmed the problems about the overlapping area of the dual sonar. Depth and distance were analyzed as major influencing factors for survey angle. Specimens were scanned while adjusting distance and towfish angle according to depth change in order to verify applicability of the developed dual sonar in the field experiment. Optimal resolution was found to be 3 cm in specimen spacing, and 20 sample data items were extracted. We developed the regression model based on the multiple regression analysis and developed the RealDualSONAR-DAQ tool, the dual sonar optimum operating method program based on proposed correlation equations. We can use the developed tools to get the value of the major influencing factors for dual sonar operation and obtain high quality sonar data to analyze damage of underwater structures.

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Study Relationship between Inorganic and Organic Coal Analysis with Gross Calorific Value by Multiple Regression and ANFIS

Cited by 35 publications

References 8 publications

Recovery of coal particles from a tailing dam for environmental protection and economical beneficiations

Recovery of coal particles from a tailing dam for environmental protection and economical beneficiations

Development of a 2 MHz Sonar Sensor for Inspection of Bridge Substructures

A Study for Optimum Survey Method of Underwater Structure Using the Dual Sonar Sensor

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