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A method of mineral fuel beneficiation with subsequent delivery to the consumer by pipeline transportation?

A beneficiation method and a technology for fossil fuels, which are applied in combustion methods, fuels, conveyors, etc., can solve the problems of negative temperature aggravating the continuous coil output of coal railway transportation, and achieve improved consumption performance, increased production, and reduced adverse effects on the environment. Effect

Inactive Publication Date: 2014-05-14
C·恩克博德
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for most users, the greatest demand for solid fuels is during the winter months; similarly, negative temperatures exacerbate uninterrupted coil delivery due to high freezing of coal in rail cars and outdoor pipelines. )question

Method used

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  • A method of mineral fuel beneficiation with subsequent delivery to the consumer by pipeline transportation?
  • A method of mineral fuel beneficiation with subsequent delivery to the consumer by pipeline transportation?
  • A method of mineral fuel beneficiation with subsequent delivery to the consumer by pipeline transportation?

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] figure 1 Flowchart showing the subterranean processing process for a portion of starting rock requiring additional size reduction under deep mining conditions where the rock is kept sufficiently heated throughout the year by internal heat regardless of climatic conditions and the coal produced Used in power plants.

[0060] The starting rock, which fraction is separated by sieving and requires additional size reduction to enhance waste rock separation, is ground in a drum 1 filled with a liquid having a density between that of the fossil fuel and the waste rock. The drum operates in a closed cycle with a three-product heavy-media hydrocyclone 2 .

[0061] The liquid expresses a density of 1.48g / cm 3 Aqueous solution of calcium nitrate / zinc chloride mixture.

[0062] The beneficiated product, leaving the hydrocyclone 2 still suspended in a heavy aqueous medium, first brings the product to the bottom of the well, then passes through a pump 3 and a surface pumping stati...

Embodiment 2

[0075] figure 2 Flow diagram showing underground beneficiation of pulverulent materials resistant to highly selective dry separation. Due to the increased influence of the rheological properties of the water-salt medium on the highly dispersed material, processing this part of the raw material in an aqueous solution of mineral salts leads to a decrease in separation efficiency, and the high humidity of the paste mineral processing product leads to a combination of dry coal and dry final tailings. Emissions-related increases in electricity consumption.

[0076] In this case, liquid argon, a non-aqueous cryogenic liquid with a density between that of fossil fuels and waste rock, is used as the separation medium. The boiling point of this liquid is so low that the irreversible boiling of the residual liquid phase due to contact with the environment, so that the discharge of the dry beneficiation product is carried out automatically.

[0077] To this end, the first pulverized r...

Embodiment 3

[0089] image 3 shows the basic technical scheme for co-transporting lump and pulverized coal from the mine to the ground when the user of the solid fuel is a thermal power station.

[0090] The coal conveyed in the main flow from the coal face to the bottom of the shaft is classified on the separator 1 into lumpy material and fine coal comprising small lumps of coal and all its pulverulent fractions.

[0091] The fine coal separated from lump and bulk coal is fed into screw feeder 2 equipped with heat exchange jacket, and extruded with extrusion die 3 . An appropriate amount of bitumen is introduced into the screw feeder 2 as a binding additive to reinforce the monolith made of fine coal in a cylindrical shape resembling a piston of a hydraulic device. The steam used to heat the coal mixture with bitumen prior to extrusion is fed into its heat exchange jacket.

[0092] Batches of lump coal and each briquette are alternately placed in the loading chamber 4 of the loading sys...

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Abstract

A method of mineral fuel beneficiation with subsequent delivery to the consumer by pipeline transportation relates fuel and energy complex and can find application in coal and slate energetics. Invention main objective is security of solid fuel delivery from mine (or an open cut coal mine) in already enriched form, with its subsequent through delivery to the consumer by pipeline on any distances in stream mode, without any intermediate transshipment operations. For this purpose use liquid with set complex physical, sanitary-and-hygienic and ecological properties, simultaneously, in 4 qualities: - As environment for grinding material that needed further reduction of size; - As separation environment for the subsequent, after reduction of size, deep underground gravitational enrichment of combustible mineral, - As motionless filler of the vertical pipeline, for buoyancy in it ready product from mine on terrestrial surface: - As carrying medium for final drift of end-product to the consumer by main pipeline. Depending on consumer type of solid fuel, a time of year, and weather conditions in which such, non-polluting, mining-energetic complex functions, there are used various technological approaches as to the general principles of construction of such, non-polluting, beneficiating- transport technological process as well as within the limits of separate links of such technological chain, various methods of the regeneration, used many functional liquids which are in the closed contour of circulation between producer of solid fuel and its consumer.

Description

technical field [0001] The invention relates to the mining of different types of fuels for power generation and can be used in the mining of coal, shale, and other branches of the mining industry connected to solid fuel users through transportation infrastructure equipment. Background technique [0002] Traditional methods of supplying coal or other solid fossil fuels to various users are known. To this end, the raw coal is transported to ground storage via skip hoists and concentrated at the coal-concentrating plant. Then, the high-quality solid fuel thus obtained is transported by rail from the finished product storage plant to the user. [0003] Clean coal arriving at the destination is unloaded from the vehicle, stacked in an open field, and then transported for direct use (see, for example, Golitsyn M.V., М.В., Golitsyn A.M. Everything About Coal. Moscow, Nauka Publishers, 1989.–192pp.) ). [0004] The production string described above includes a number of storage op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00B02C4/26B65G53/30C10L1/32E21C41/00F23K1/02F23K3/02B03B9/00
CPCB03B9/005C10L1/326C10L9/00C22B1/00F23K1/02F23K3/02E21F13/002B03B9/00E21C41/16
Inventor C·恩克博德B·亚历山大
Owner C·恩克博德
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