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Record W2364478920

Thermal fragmentation of Longyan anthracite with different lithotypes

2005· article· en· W2364478920 on OpenAlexaff
Hongzhou He

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicCoal Properties and Utilization
Canadian institutionsCAE (Canada)
Fundersnot available
KeywordsAnthraciteFragmentation (computing)CombustionParticle sizeChemistryFluidized bed combustionFluidized bedPyrolysisParticle (ecology)Chemical engineeringMineralogyComposite materialMaterials scienceOrganic chemistryCoalGeology
DOInot available

Abstract

fetched live from OpenAlex

Three different lithotypes of Longyan (LY) anthracite with different particle size were separated by means of flotation technique. Experiments of the particle fragmentation during pyrolysis and combustion were conducted in a TGA system and a pilot scale fluidized bed furnace, respectively. It is shown that for clarain and culm many new fine particles are generated during pyrolysis, most of which has a size smaller than 0.8mm. The primary fragmentation reaction of clarain and clum becomes severely with the increase of heating rate and the sample particle size. For durain particle, no obvious fragmentation is found under the same experimental condition. Factors, such as particle properties, particle size, furnace′s bed temperature and combustion time, have an important effect on the fragmentation of LY anthracite during its combustion in fluidized bed. Clarain and culm occur tremendous fragmentation in fluidized bed due to their compact structure, few large pores in inner particle, high microscope-hardness (H_ m,v ) and low ash content. The fragmentation of clarain and culm tends to be severely with the increase of particle size, bed temperature and combustion time. Durain doesn′t have obvious fragmentation during combustion in fluidized bed. Both clarain and culm undergo the secondary fragmentation during combustion, but the secondary fragmentation of clarain is severely in the late stage of combustion. The particle size of clarain declines more rapidly than that of culm. In the early stage of combustion, the mean particle size of clarain decreases promptly as a result of primary fragmentation, but with the time going it falls to a stable size. The combustion model of clarain in fluidized bed is equidensity shrinking core model, while that of durain is equidiameter one, and that of culm is a mixed model.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.305
Threshold uncertainty score0.329

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.007
GPT teacher head0.188
Teacher spread0.181 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations2
Published2005
Admission routes1
Has abstractyes

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