The shape of ground petroleum coke particles

Beirne, T; Hutcheon, J.M.

doi:10.1088/0508-3443/5/s3/325

Cited by 11 publications

(4 citation statements)

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“…For example, the authors of [7] studied the effect of the type of a grinding device on the particle shape of oil coke of the following two types: low porosity coke with thick cell walls without visible cracks and fissured coke, the porosity and the cell wall thickness of which were distributed over a wide range. For the coke of the first type, the method of grinding did not affect the shape of particles 200-600 μm in size.…”

Section: Resultsmentioning

confidence: 99%

“…For the porous and fissured coke, different dependences of the parti cle shape on the particle size were revealed for grinding in a hammer mill and in a roll crusher (Fig. 3) [7]. These curves reflect the following dependence of the shape factor: ϕ = 1.1V 1/3 N 1/6 A -1/2 , where V is the spe cific particle volume (cm 3 /g), N is the number of par ticles in 1 g substance, and A is the specific surface area (cm 2 /g).…”

Section: Resultsmentioning

confidence: 99%

“…As in [7], we used a porous and fissured material. Figure 4 shows an image of coke breeze particles taken with a JEOL JSM 6490 LV scanning electron micro scope (SEM).…”

Section: Resultsmentioning

confidence: 99%

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Mechanical strength of extrusion briquettes (BREX) for blast-furnace and ferroalloy production: II. Effect of the method of grinding coke breeze on the strength of extrusion briquettes

Bizhanov¹,

Курунов²,

Dashevskii

2015

Russ. Metall.

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The influence of the method of grinding coke breeze on the strength and the behavior of extrusion briquette (BREX) during static loading is studied. It is found that the size, the shape, and the surface relief of coke breeze particles affect the character of BREX fracture. The application of a shearing extruder for pre liminary refinement of coke breeze can result in viscoelastic fracture of BREX due to an increase in its impact toughness.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Mechanical strength of extrusion briquettes (BREX) for blast-furnace and ferroalloy production: II. Effect of the method of grinding coke breeze on the strength of extrusion briquettes

Bizhanov¹,

Курунов²,

Dashevskii

2015

Russ. Metall.

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“…Because most porous particles are not wet by mercury, this penetration can be eliminated by using it as the immersion liquid (1)(2)(3)(4)(5)(6)(7)(8).…”

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confidence: 99%

Apparatus for the Determination of Particle Density of Porous Solids.

Cartan¹,

Curtis²

1963

Anal. Chem.

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unknowns are determined from the previously prepared calibration curve. RESULTS AND DISCUSSIONPrecision of the method at two carbonyl levels is shown in Table I. Data for this study, accumulated over a period of several weeks, can be compared with those of the manual method concurrently used in our laboratory. Long term precision, 2 , for the manual method, 40 analyses, is ±0.014 at a carbonyl number of 0.025. Samples A and B which were used in establishing the precision of the automated procedure were prepared from crude oxo alcohols which had been dissolved in pure decvl alcohol.Table II shows the results of a crosscheck program using the extractive method of Lohman (£) as referee. The samples used in the study were actual plant samples of oxo alcohols. Agreement between the two methods is excellent.Because the samples used in these studies all had specific gravities which varied within a few per cent of one another, no correction for changes in specific gravity was made in the analytical calculations. Where large changes in specific gravity of the samples are encountered, corrective measures should be taken.The automated procedure is being used in our analytical laboratories for routine analyses. On a single sample, elapsed time per analysis is less than 1 hour. For samples in groups of 10 or more, time per sample is about 0.1 hour. The system can handle as many as 70 to 80 samples per 8-hour day with a minimum of operator attention.

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Features of Stiff Vacuum Extrusion as a Method of Briquetting Natural and Anthropogenic Raw Materials

Курунов¹,

Bizhanov²

2017

Stiff Extrusion Briquetting in Metallurgy

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The shape of ground petroleum coke particles

Cited by 11 publications

References 10 publications

Mechanical strength of extrusion briquettes (BREX) for blast-furnace and ferroalloy production: II. Effect of the method of grinding coke breeze on the strength of extrusion briquettes

Mechanical strength of extrusion briquettes (BREX) for blast-furnace and ferroalloy production: II. Effect of the method of grinding coke breeze on the strength of extrusion briquettes

Apparatus for the Determination of Particle Density of Porous Solids.

Features of Stiff Vacuum Extrusion as a Method of Briquetting Natural and Anthropogenic Raw Materials

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