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Sorption behavior of Np(V) on illite, shale and MX-80 in ...

2015-7-28 · Sorption of Np(V) on illite, shale and MX-80 under oxidizing conditions were first studied in two types of high ionic strength solutions: (i) a reference brine solution (SR-270-PW) with an ionic strength of 6.0 M, and (ii) Na–Ca–Cl solutions. The effects of pHc, Na/Ca ratio, and ionic strength on Np(V) sorption in Na–Ca–Cl solutions were investigated. The K d values and …

P&Q University Lesson 3

2019-8-16 · Crushed Stone Resources Generally underlain by poorly consolidated to well-consolidated sandstone, shale and limestone, with the sandstone and shale being most prevalent and most extensive. In places, the rock units contain significant amounts of gypsum or halite. The soft sandstone and shale tend to afford poor quality crushed stone.

Multiscale pore structure and its effect on gas transport ...

2017-6-14 · Several other studies propose rapid permeability estimation using crushed shale samples. This method only determines the apparent permeability of shale matrix, which eliminates the presence of microfractures and the impact of stress [Cui et al., 2009; Luffel and Guidry, 1992; Luffel et al., 1993]. However, due to limited precision, irreversible ...

Databank (Subnautica) | Subnautica Wiki | Fandom

2021-12-7 · The Databank is the encyclopedia of entries that are visible on the PDA. Note: If you wish to look for a specific databank entry here, it is highly recommended you hit Ctrl + F and type in the exact name of the entry or its …

Review of experimental sorption studies of CO2 and CH4 …

2020-1-1 · In recent years CO 2 injection in shale has been investigated with aim to enhance shale gas recovery (ESGR) and permanently sequester CO 2.This paper reviews the state of research on CH 4 and CO 2 sorption in shale. We present the interaction of CO 2 and CH 4 with shale rocks and discuss the dependence of gas sorption on shale properties including organic …

Mineral and Heavy Metal Composition of Oil Shale Ash …

2020-12-22 · Kukersite oil shale from Estonia was used as the fuel. The fuel was dried, crushed, and separated to obtain oil shale with a size less than 3 mm. Table 7 gives the proximate and ultimate analysis of the oil shale samples used. Proximate analysis was performed on the sample as it was received, and the ultimate analysis is given in terms of the ...

US3803021A

Hot pellets in a size range between about 0.06 and 0.3 inch characterized primarily by their effective surface area, quantity, size, density, and elutriation velocity are cycled to a retort zone to mix with and retort crushed oil shale, thereby producing gas and oil products, a combustible deposition on the pellets, and spent shale. The main source of heat for retorting is derived from ...

Oil Shale Processing

 · The processing of shale oil is essentially done by retorting, which consists of heating crushed shale in a closed vessel up to a temperature (~ 500 °C) at which the matter releases crude oil, gases, char, and steam. The fraction of extractable oil is 10–20% by volume with respect to the solid shale material.

Development of high performance lightweight concrete …

2021-11-1 · As the SLWA was crushed from the big bulk of expanded shale, the surface was very rugged and the pores were opened. A close examination in Fig. 6d displays that the surface pores with different sizes were separated by the shale matrix.

Sand, Gravel and Crushed Stone

AB-3. is a crushed limestone. It is ideal for use on driveways and as a base material for concrete. Crushed Concrete. is our recycled concrete. It can replace AB-3 used for base material. Limestone Screenings. are a by-product from …

Obtaining oil from shale (Patent) | OSTI.GOV

A retort apparatus is described for recovering hydrocarbons from oil shale which includes: a. an elongated housing, having passage means end to end therethrough, inlet means to permit delivery of crushed shale into one end of the housing for movement along the passage means, and outlet means in communication with the end of the passage means remote from the inlet …

US Patent for Apparatus for aboveground separation ...

A retort apparatus for recovering oil from crushed oil shale moved through an elongated housing, includes a plurality of heat exchangers located in the housing for transferring heat to or from the shale. The heat exchangers are spaced to define in sequence a drying zone, a preheating zone, a cracking and distillation zone, and a waste heat recovery zone.

Petroleum products from oil shale

Processing in crusher 34 converts oil shale 32 into crushed oil shale 36 comprised optimally of oil shale granules of approximately 0.375 inches in diameter. Crushed oil shale 36 is then advanced to extraction sub-sector 20 in processing sector 16 of system 10. Also in FIG. 2A, what was heat source 18 in FIG. 1 is depicted as a heat source ...

Geosciences | Free Full-Text | Evaluation of Shale Source ...

2020-9-23 · The clay fraction was separated from the crushed material by centrifugation, which involved the addition of Na-metaphosphate to disperse the clays. Further disaggregation was accomplished in an ultrasonic bath. To ensure a uniform cation exchange, clay fractions separated by centrifugation were saturated by Mg using a solution of 10 mL of 4 M ...

Structural characterization of thermal bitumen extracted ...

2020-8-12 · Thermal bitumen is an organic intermediate during the pyrolysis of oil shale kerogen. In this work, semi-cokes were prepared for obtaining thermal bitumen by pyrolyzing Fushun oil shale to 400–500 °C, followed by extraction with a mixture of an ionic liquid (1-butyl-3-methylimidazolium chloride) and a polar solvent (N-methyl pyrrolidone). The critical thermal …

Feasibility of Pulverized Oyster Shell as a Cementing Material

2013-3-26 · This research intends to study the cementing potential of pulverized oyster shell, rich in calcium, when mixed with fly ash and soil. Cylindrical compacted soil and cubic lime specimens with different proportions of the shells and fly ash are made to study the strength variance. Soil, which is classified as CL in the USCS system, commercialized pulverized oyster shell, F-type …

Experimental Study of Crushed Granular Materials by the ...

2021-10-28 · These two materials (limestone and shale) were extracted in the form of large blocks. The latter are crushed using a hammer for large diameters and a jaw crusher for small diameters. The grains thus obtained are of irregular shape. The samples were made in such a way that each sample consists of a single grain shape.

SEPARATING RETORTED SHALE FROM RECYCLED HEAT …

A process for retorting crushed oil shale containing a carbonaceous organic matter, commonly called kerogen, and other mineral matter with hot pellets which are later separated from the spent retorted shale and recycled is described having reference to the drawing.

Understanding the influence of petrographic parameters …

2021-7-28 · From 2000 to 2018, nearly 31% of occupational fatalities in underground mines in the US occurred due to fall of ground, making it the leading cause of fatalities in this environment ().Cutter roof failure observed in stack rocks is a major contributor to groundfall .This interbedded layer of shale and sandstone makes the roof vulnerable to high horizontal stresses, ultimately …

Geochemical and geological characterization of marine ...

2018-9-1 · After surface cleaning, approximately 60 mg of the crushed shale core samples with a grain size of 100 mesh were heated to 600 °C under a helium atmosphere to measure parameters such as the volatile hydrocarbon content expressed as mg HC/g rock (S 1), the remaining hydrocarbon generative potential as mg HC/g rock (S 2), and the temperature of ...

Micro-continuum Framework for Pore-Scale Multiphase …

2018-10-26 · A micro-continuum simulation framework is proposed to study the complex pore-scale dynamics associated with hydrocarbon recovery from shale gas. The model accounts for the presence of immiscible fluid phases and for transport mechanisms in the nanoporous structures including slip flow, adsorption, surface and Knudsen diffusion. We employ the concept of sub …

Methane diffusion in shales with multiple pore sizes at ...

2018-2-15 · Photos of a full-diameter shale core parallel and perpendicular to the bedding planes are shown in Fig. 2a) and b), respectively. To conduct the low pressure nitrogen adsorption measurement, high pressure mercury injection capillary pressure measurement and HPHT methane adsorption experiment, parts of each sample were crushed as shown in Fig. 2c).

Iron-containing refractory balls for retorting oil shale ...

The crushed oil shale, optionally partially preheated, is preheated in a preheater means by direct contacting with hot flue gases as hereinafter described. The hot flue gases preheat the crushed shale to a suitable temperature of such as about 300° F. to 700° F., preferably such as about 500° F., in a dilute-phase fluid bed operation.

How to Identify Black Minerals

2019-7-29 · Hematite. Hematite, an iron oxide, is the most common black or brownish-black mineral in sedimentary and low-grade metasedimentary rocks. It varies greatly in form and appearance, but all hematite produces a reddish streak. Characteristics: Dull to semimetallic luster; hardness of 1 to 6.

A Study of Chert and Shale Gravel in Concrete

Blends of 2, 4, 6, and 10 percent of chert or shale from each source were made with a standard durable crushed limestone coarse aggregate, and these blends were used in 3-X 4-X 16-in. air-entrained concrete beams sub­ jected to up to 300 cycles of freezmg and thawing. A measure of the amount of deep-seated deterioration of