Optimization of operating conditions on ultra-fine coal grinding through kinetic stirred milling and numerical modeling

Patiño, Francisco; Talan, Deniz; Huang, Qingqing

doi:10.1016/j.powtec.2022.117394

Cited by 16 publications

(11 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ore-grinding method can promote the separation of minerals and the coal matrix and is widely used to improve the flotation desulfurization efficiency. , The coal samples were dried at 70 °C and crushed by a multifunctional crusher. Then, the coal particles were sieved according to the Chinese National Standards (GB/T 477-2008).…”

Section: Methodsmentioning

confidence: 99%

Occurrence Characteristics of Fine-Grained Pyrite in Coal and Its Scaling Effect on Flotation Desulfurization

Wang

Zhang

2022

ACS Omega

View full text Add to dashboard Cite

To explore the occurrence and distribution characteristics of fine-grained pyrites in coal and the effect of pyrite particle size on flotation efficiency, coal samples from Guizhou province and Shanxi province, China, were selected for pyrite morphology observation and sulfur content test before and after flotation desulfurization experiments with different coal particle sizes. Experimental results showed that the fine-grained fine pyrites in coal have various occurrence forms and complex connections with the coal matrix. The fragmentation process can change the distribution of pyrite content in coal. Flotation desulfurization experiments showed that the sum of pyrite content in the cleaned coal and middlings gradually became significantly higher in coal particles with size 15–37 μm compared with particle sizes 37–44 and 44–75 μm. The complex occurrence morphology and crystal structure of fine-grained pyrite make it difficult to be removed from the coal matrix by ore grinding during flotation. Fine-grained pyrite mainly occurs in the form of framboïdal pyrite, disseminated pyrite, and monomer pyrite with a size of 0.69–33.94 μm in the middlings and cleaned coal. Therefore, 37 μm is considered as the critical dimension for ore grinding to improve the effective flotation desulphurization efficiency in this study, and some more effective methods should be used to increase the desulfurization efficiency of fine-grained pyrite.

show abstract

Section: Methodsmentioning

confidence: 99%

Occurrence Characteristics of Fine-Grained Pyrite in Coal and Its Scaling Effect on Flotation Desulfurization

Wang

Zhang

2022

ACS Omega

View full text Add to dashboard Cite

show abstract

“…The methodology, which is an approximate method that allows one to study of the effects of grinding on flotation circuits, is applied to a copper sulfide mineral with appropriate results. In [12] investigated ultra-fine coal grinding performance of four low-to moderate-cost grinding media in a laboratory stirred mill. The mathematical models generated based on population balance modeling provided an accurate forecast of the particle-size distribution.…”

Section: Introductionmentioning

confidence: 99%

Statistical distributions for modeling mineral liberation

et al. 2023

View full text Add to dashboard Cite

Using the algorithm and the results of laboratory studies on grinding of loparite ores from the Lovozero deposit in a ball and rod mill, simulation grinding models were designed based on the transformation of a discrete function of the density distribution of outputs of mineral particle size classes. The model’s adequacy was quantitatively analysed carried out by calculating the determination coefficient without taking into account the constant component of the distribution; for a qualitative assessment of the result the authors used the Cheddock scale. The authors studied the minerals disintegration at ball and rod grinding with the following verification of the proposed algorithm. To identify the distribution of loparite by size classes in the initial ore samples and in the samples obtained in the disintegration taking place at different productivity, the X-ray diffraction analysis and the combined (weight, optical and geometric) methods were used.

show abstract

“…It is known that the mining, burning, cooking, pulverized coal producing, or processes in a fluidized bed is an important part of the technological chain of the enterprise, and the method of crushing coal has a greater impact on the quality and quantity of products [ [1] , [2] , [3] , [4] , [5] , [6] ]. Therefore, at this time, coal remains a raw material that significantly affects the mechanical strength indicators of coke and the energy consumption of coal preparation plants.…”

Section: Introductionmentioning

confidence: 99%

“…The works [ 5 , 8 ] have presented the research results of 26 samples of hard coal (pure or original) from the coal basin Zonguldak (Zonguldak - 17; Amasra - 9) and 17 low-quality coal from different places in Turkey. Regarding the newly proposed method for determining coal grinding ability, samples were done in the 1.7 + 1.18 mm size and crush in a ring roller mill.…”

Section: Introductionmentioning

confidence: 99%

The use of Protodiakonov and Hardgrove methods to determine the effect of coal quality on its grinding ability

Pyshyev,

Miroshnichenko,

Koval

et al. 2023

Heliyon

View full text Add to dashboard Cite

Optimization of operating conditions on ultra-fine coal grinding through kinetic stirred milling and numerical modeling

Cited by 16 publications

References 59 publications

Occurrence Characteristics of Fine-Grained Pyrite in Coal and Its Scaling Effect on Flotation Desulfurization

Occurrence Characteristics of Fine-Grained Pyrite in Coal and Its Scaling Effect on Flotation Desulfurization

Statistical distributions for modeling mineral liberation

The use of Protodiakonov and Hardgrove methods to determine the effect of coal quality on its grinding ability

Contact Info

Product

Resources

About