Table 7. Sieve analysis of oil shale after primary crushing mm 75.0 + 53.0-75.0 37.5 - 53.0 19.0-37.5 9.5 -19.0 7.0- 9.5 2.8- 7.0 1.4- 2.8 0.5- 1.4 - 0.5 16.4 27.7 14.6 17.8 16.2 2.9 5.2 1.8 1.6 1.8 suitable as feedstock to a moving retort processes for oil shale utilization. It should be noted thatPAMA's work is part of a national effort. Many research 25.
The particle size of the feedstock in the moving bed is between 7 and 75 mm. particles account for only about 75 of the crushing oil shale. Consequently, the moving bed retorting process must be integrated with a process which is able to utilize Sieve analysis of oil shale after primary crushing mm 75.0 + 53.0-75.0 37.5 - 53.0 19.0-37.
The whole process of shale comminution usually consists of primary crushing, secondary crushing and fine crushing. Shale rock of different sizes are inserted into the jaw crushers for size reduction. Generally grinding is carried out in one or two stages, while three grinding stages can also be performed. After crushing, the material is returned to the sieving process for sizing.
EXCT sizer crushers are available in a variety of models and provide primary and secondary crushing operations for a wide range of materials such as coal, lignite, limestone, clay, shale, etc. For example, EXCT's coal sizer crusher is a self-developed energy-saving crusher.
The medium hard limestone with an edge length of up to 1200 mm is crushed in the HAZEMAG sizer HCS 1020 to D97 250 mm without any restriction. This would not have been possible with the old jaw crusher and could only be achieved thanks to the intelligent and patented crushing tools of the sizer.
Intelligent, energy efficient and continuous crushing. With a roll diameter of one meter and a roll length of two meters, the new HAZEMAG sizer HCS 1020 achieves a throughput of 700 t h, which almost doubles the capacity of the previous installed jaw crusher. The medium hard limestone with an edge length of up to 1200 mm is crushed in the.
Primary Examiner Novosad, Stephen J. This invention relates to crushing oil shale with nuclear explosives. In one aspect the invention relates to creating a mass of shale rubble from which oil can be recovered in situ. The nuclear chimney in an oil shale is a highly permeable mass of broken and displaced shale ranging in size from.
Compleat oil shale crushing plant henan mining machinery mumbai primary crushers for oil shale out size 200tph cobble crushing plant vietnam is an important mining export country in asia especially the exportation of limestone iron ore coal granite Shale . Crusher Equipment And Pulverizing Mills For Shale .
Big shale is sent to jaw crusher for coarse crushing by vibrating feeder, and then belt conveyor sends shale to impact crusher for medium or fine crushing. After secondary crushing, vibrating screen will screen materials out whose sizes satisfied customers, but those unqualified materials should be reprocessed in secondary crushing.
Jul 20, 2021 Figure 1 Types of Roll Crushers. Single Roll Crushers. Single Roll Crushers are primary crushers that provide a crushing ratio of up to 6 1. They reduce materials such as ROM coal, mine refuse, shale, slate, gypsum, bauxite, salt, soft shale, etc., from large size particles to a medium size, while producing minimal fines.
Estonia deposit. Heating value of oil shale layers can vary considerably within the location of the deposit and depends on concretions and limestone content . Oil shale is used as fuel for electricity generation and shale oil pro-duction. For power generation, grain size of oil shale has to be 0–25 mm or.
5. Initial overburden removed to open the pit is permanently stored off-site or temporarily stored near the mine. 6. Mining benches are 30.5 meters (100 feet) high and 61 meters (200 feet) wide. 7. Primary crushing of oil shale occurs at the bottom of the pit. 8.
HGT gyratory crusher has many incomparable advantages such as high crushing efficiency, low production cost and simple maintenance method, which can satisfy the requirements about high efficiency and coarse crushing. Output size 140-250mm Production capacity 2015-8895T H. SPECIFICATIONS.
What Is Frac Sand Frac sand is a high-purity quartz sand with very durable and very round grains. It is a crush-resistant material produced for use by the petroleum industry. It is used in the hydraulic fracturing process (known as fracking ) to produce petroleum fluids, such as oil, natural gas, and natural gas liquids from rock units that lack adequate pore space for these fluids to flow.
Accurately determining oil-in-place (OIP) and gas-in-place (GIP) is critical for evaluating shale oil and gas plays. Methane is typically stored in nano-size pores in low permeability mudstones, but many of these hydrocarbon-saturated pores may isolate from surrounding mineral matrix.
Sep 01, 2018 Oil shale, as a humic sludge substance, has not only some basic properties of coal but also unique properties of its own. Oil shale is characterized by a high content of ash and a low amount of organic matter compared to coal . Generally, the amount of organic matter in oil shale is less than 35 , while that in coal is than 75 .
Mar 01, 1999 The mined oil-shale will require crushing and sizing prior to being fed to the processing facilities. Sizing operations include secondary crushing and screening. The required size of the crushed oil-shale depends on the specific operating conditions of the process being employed. In the proposed OSITGS, the required size is ∼6 mm.
Dec 16, 2020 Sledging roll crushers have been found to be generally well suited to crushing oil shale. Feeder Breakers. The feeder-breaker is an adaptation of the single roll-sledging crusher developed specifically for portability and use in low headroom coal mines. Since it has found successful use in a number of non-coal mines it is therefore worthy of.
The broken shale is then loaded into off-road dump trucks for transportation out of the quarry to the primary crushing operation. Primary Crushing and Screening. The material that arrives from the quarry is dumped directly into a rock box and then fed through a vibrating grizzly feeder and into the primary jaw crusher.
A. crushing said oil shale to an approximate predetermined size, b. delivering said oil shale to an elongated housing for controlled movement through a transfer passage extending end to end therethrough. c. moving the crushed oil shale through a drying zone in the transfer passage and heating the same within a first temperature range.
Flotation Collector Preparation and Evaluation of Oil Shale 245 Table 2. Particle size distribution analysis of the oil shale sample Particle size, Cumulative oversize, μm Product yield, Ash, Product yield Ash 500 1.54 25.03 1.54 25.03 –500 to +250 16.32 26.61 17.86 26.47 –250 to +125 32.65 26.55 50.51 26.52.