US4408999A - Coal and oil shale beneficiation process ...
Coal, oil shale and similar carbonaceous solids are beneficiated by subjecting the solids to electromagnetic radiation having a frequency between about 0.1 MHz and about 10 …
Beneficiation of oil shale by froth flotation: critical review
Oil shale beneficiation by froth flotation hasn’t received enough attention in the last two decades. The main reason was the cost of the process since flotation requires extensive grinding to liberate oil shale kerogen.
Beneficiation of oil shale by froth flotation
et al. 2016). At present, oil shale is mainly used in pyrolysis and generating electricity, and many countries have iden-tified development of oil shale resources as an important project. The main components of oil shale waste are quartz, clay, and other minerals, which have a high surface adsorption
COMBINED BENEFICIATION AND HYDRORETORTING OF OIL …
The MRI Oil Shale Beneficiation Process Physical beneficiation techniques have long been used in the mineral and coal industries to obtain a product more enriched in the economical mineral than the run-of-mine ore. constituent frm the associated impurities. the raw material to sizes finer than their natural particle size consist.
Beneficiation process for oil shale - The Superior Oil Company
Mar 24, 1981 · A beneficiation process for increasing the oil content of clay-bearing oil shale ore wherein the oil shale ore is subjected to an aqueous medium, agitated to disintegrate at least a portion of the clay, and the disintegrated clay is separated from the remaining oil shale to yield an oil shale having a greater amount of recoverable hydrocarbon values per ton than the unprocessed oil shale ore.
Oil shale separation using a novel combined dry ...
Sep 15, 2016 · The density of oil shale is around 2.35 g/cm 3, generally higher than that of coal; the principle of coal beneficiation, however, provides insights that are relevant to oil shale separation processes. Traditional water separation processes mainly include the jigging washing process and heavy medium separation.
INCIDENTAL RELEASE OF BITUMEN DURING OIL SHALE …
oil shale beneficiation processes require comminution, i.e. reduction of raw oil shale to a certain particle size [8–12]. For instance, for oil shale retorting in a fluidized bed, the run-off-mine oil shale should be comminuted and pulverized to a certain size, as recently noted by Wang and Zhou [10].
Secondary Cracking and Upgrading of Shale Oil from ...
Oil shale separation using a novel combined dry beneficiation process. Fuel 2016, 180, 148-156. DOI: 10.1016/j.fuel.2016.04.036. Wei Wang, Yue Ma, Shuyuan Li, Changtao Yue, Jianxun Wu, Jinsheng Teng. Pyrolysis characteristics of Longkou oil shale under optimized condition.
Oil shale - Wikipedia
Heating oil shale to a sufficiently high temperature causes the stone process of pyrolysis to yield a vapor. Upon cooling the vapor, the liquid shale oil —an unconventional oil —is separated from combustible oil-shale gas (the term shale gas can also refer to gas occurring naturally in shales).
Report to Congress: Wastes from the Extraction and ...
of process depends on the composition and properties of the ore and of the gangue, the rock in which the ore occurs. Some low-grade ore, waste rock, and tailings are used in dump or heap leaching, a process that the mining industry considers a form of beneficiation and one that involves spraying the material with acid or cyanide to leach out metals.
Use of Pulsewave Technology as a Kerogen Beneficiation ...
Commercial Applications and Other Benefits as described by the awardee: A process that liberates kerogen from its oil shale matrix and allows for the desirable organic fraction to be retorted as a separate phase should provide cleaner shale oil and result in cost savings. * …
Spent Oil Shale | Crude Oil and Natural Gas Waste | US EPA
Oil shale is a fine-grained sedimentary rock that can be heated, vaporized, cleaned and upgraded to form synthetic crude oil. This synthetic oil can be used as an alternative energy source for traditional crude oil. EPA is clarifying that oil shale generated by above ground retorting or heating of oil shale operations is:
Hytort process - Wikipedia
The Hytort process is an above-ground shale oil extraction process developed by the Institute of Gas Technology. It is classified as a reactive fluid process, which produces shale oil by hydrogenation. The Hytort process has advantages when processing oil shales containing less hydrogen, such as the eastern United States Devonian oil shales.
Beneficiation of 6-0 mm fine-grain oil shale using ...
Sep 01, 2017 · The purpose of oil shale beneficiation is to enrich organic matters, raise the grade of oil shale and increase its oil content. According to the physical properties of oil shale, the oil content in oil shale decreases with an increase in its density. Therefore, the VADMFB beneficiation by the density sorting process aims to enrich the oil content.
Kerogen Beneficiation from Longkou Oil Shale Using Gravity ...
Mar 29, 2016 · Because of enrichment of kerogen in the beneficiation process, oil shale may be used more effectively in both oil production and power generation. The float and sink tests were carried out to separate the raw oil shale samples into a series of fractions according to density first.
Beneficiation of Oil Shale by Froth Flotation: Critical Review
Oil shale beneficiation by froth flotation hasn’t received enough attention in the last two decades. The reason was the economics of the process as well as its environmental impact. However, the recent surge in oil price and recent developments in fine grinding technologies may improve the efficiency of oil shale beneficiation by such process.
Shale-oil-recovery systems incorporating ore beneficiation ...
Abstract This study analyzed the recovery of oil from oil shale by use of proposed systems which incorporate beneficiation of the shale ore (that is concentration of the kerogen before the oil-recovery step). The objective was to identify systems which could …