CN210700594U - High-efficient fine-grained oxidized coal slime system of selecting separately - Google Patents
High-efficient fine-grained oxidized coal slime system of selecting separately Download PDFInfo
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- CN210700594U CN210700594U CN201921701019.3U CN201921701019U CN210700594U CN 210700594 U CN210700594 U CN 210700594U CN 201921701019 U CN201921701019 U CN 201921701019U CN 210700594 U CN210700594 U CN 210700594U
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Abstract
The utility model relates to the technical field of coal washing and separation, in particular to a high-efficiency fine-grained oxidized coal slime separation system, which is characterized in that the system consists of a coal slime bucket, a feeding pump, a hydrocyclone, a spiral separator, a refined coal slime laminated vibrating fine screen, a refined coal slime centrifugal dehydrator, a tail coal slime arc dewatering screen, a tail coal slime high-frequency vibrating dewatering screen, a flotation machine or a thickener, the coal slime bucket is communicated with the hydrocyclone, the bottom flow pipe of the hydrocyclone is communicated with the spiral separator, the concentrate outlet of the spiral separator is respectively communicated with the refined coal slime laminated vibrating fine screen and the tail coal slime arc dewatering screen, the refined coal slime laminated vibrating fine screen is respectively communicated with the coal slime bucket and the refined coal slime centrifugal dehydrator, the filtrate outlet of the refined coal slime centrifugal dehydrator is communicated with the coal slime bucket, the tail coal slime arc dewatering screen is communicated with the tail coal slime high-frequency vibrating dewatering screen, the sorting device has the advantages of simple structure, reasonable design, high sorting efficiency, high sorting precision, good sorting effect, strong adaptability and the like.
Description
Technical Field
The utility model belongs to the technical field of coal washing and selects technology and specifically relates to a simple structure, reasonable in design, sorting efficiency is high, the high-efficient fine-grained oxidized coal slime system of selecting separately that the sorting precision is high, select separately effectual, adaptability is strong.
Background
As is well known, the energy storage characteristics of rich coal, poor oil and less gas in China and the obvious cost advantage of coal determine that the coal is the most main energy in China for a long time.
At present, coal slime is generated in the coal mining and washing processes, and with the continuous improvement of the mining mechanization degree, the content of fine-grained coal slime in raw coal is continuously increased, so that the difficulty of subsequent washing work is increased. At present, flotation is still the main method for effectively separating and recovering fine-grained coal slime, most of coal has higher hydrophobicity, and ideal separation indexes can be obtained through the flotation method. Meanwhile, the surface of coal is easy to oxidize, and the change of the internal molecular structure is often accompanied in the oxidation process, and along with the continuous enhancement of the oxidation degree, the oxygen-containing functional groups in the oxidation process are increased to a certain degree, so that the hydrophobic property of the surface of the coal slime is converted into hydrophilic property, and the coal slime is difficult to recover by adopting a flotation process, thereby causing resource waste and economic benefit loss.
Disclosure of Invention
The utility model aims at solving the not enough of above-mentioned prior art, provide a simple structure, reasonable in design, separation efficiency height, select separately the precision high, select separately effectual, the high efficiency that adaptability is strong selects separately fine grit oxidation coal slime system.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a fine fraction oxidation coal slime system is selected separately to high efficiency, this system of its characterized in that comprises coal slime cask, feeding pump, hydrocyclone, spiral sorter, clean coal slime stromatolite vibration fine screen, clean coal slime centrifugal dehydrator, tail coal slime arc dewatering screen, tail coal slime high frequency vibration dewatering screen, flotation machine or concentrated machine, the coal slime cask be linked together through pipeline and hydrocyclone's pan feeding mouth, pipeline on be equipped with feeding pump and valve, hydrocyclone's overflow pipe be linked together through pipeline and flotation machine or concentrated machine, hydrocyclone's underflow pipe be linked together through pipeline and spiral sorter, the concentrate export of spiral sorter be linked together through pipeline and clean coal slime stromatolite vibration fine screen, the undersize export of clean coal slime stromatolite vibration fine screen be linked together through pipeline and coal slime cask, the oversize export of clean coal slime stromatolite vibration fine screen link to each other with clean coal slime centrifugal dehydrator through pipeline and pipeline Lead to, clean coal mud centrifugal dehydrator's filtrate export be linked together through pipeline and coal slime cask, clean coal mud centrifugal dehydrator's dehydration back product export is the clean coal product, the tailing export of spiral sorter be linked together through pipeline and tail coal mud arc dehydration sieve, the undersize export of tail coal mud arc dehydration sieve be linked together through pipeline and flotation machine or concentrated machine, the oversize export of tail coal mud arc dehydration sieve is linked together through pipeline and tail coal mud high frequency vibration dehydration sieve, the undersize export of tail coal mud high frequency vibration dehydration sieve be linked together through pipeline and flotation machine or concentrated machine, the oversize of tail coal mud high frequency vibration dehydration sieve be middlings product.
Coal slime cask and hydrocyclone's pan feeding mouth between be equipped with manometer and pressure sensor on the pipeline, through the manometer real-time supervision delivery pressure condition.
Coal slime cask be equipped with cylindrical cone type, be equipped with liquid level monitoring device and moisturizing device in the coal slime cask, conveniently receive the coal slime water.
The feeding pump is provided with a frequency converter, and the conveying pressure of the feeding pump is controlled by the frequency converter.
The system consists of a coal slime bucket, a feeding pump, a hydrocyclone, a spiral separator, a fine coal slime laminated vibrating fine screen, a fine coal slime centrifugal dehydrator, a tail coal slime arc dehydration screen, a tail coal slime high-frequency vibrating dehydration screen, a flotation machine or a concentrator, wherein the coal slime bucket is communicated with a feeding port of the hydrocyclone through a conveying pipeline, the conveying pipeline is provided with the feeding pump and a valve, an overflow pipe of the hydrocyclone is communicated with the flotation machine or the concentrator through the conveying pipeline, a bottom flow pipe of the hydrocyclone is communicated with the spiral separator through the conveying pipeline, a concentrate outlet of the spiral separator is communicated with the fine coal slime laminated vibrating fine screen through the conveying pipeline, a screen underflow outlet of the fine coal slime laminated vibrating fine screen is communicated with the coal slime bucket through the conveying pipeline, and a screen overflow outlet of the fine coal slime laminated vibrating fine screen is communicated with the fine coal slime centrifugal dehydrator through the conveying pipeline, the filtrate outlet of clean coal mud centrifugal dehydrator is communicated with a coal mud bucket through a conveying pipeline, the product outlet of the dehydrated clean coal mud centrifugal dehydrator is a clean coal product, the tailing outlet of the spiral separator is communicated with a tailing mud arc dehydration sieve through a conveying pipeline, the undersize outlet of the tailing mud arc dehydration sieve is communicated with a flotation machine or a concentrator through a conveying pipeline, the oversize outlet of the tailing mud arc dehydration sieve is communicated with the tailing mud high-frequency vibration dehydration sieve through a conveying pipeline, the undersize outlet of the tailing mud high-frequency vibration dehydration sieve is communicated with the flotation machine or the concentrator through a conveying pipeline, the oversize of the tailing mud high-frequency vibration dehydration sieve is a middlings product, a pressure gauge and a pressure sensor are arranged on the conveying pipeline between the coal mud bucket and the feeding port of the hydraulic cyclone, and the conveying pressure condition is monitored in real time through the pressure gauge, coal slime cask be equipped with the cylindrical cone type, be equipped with liquid level monitoring device and moisturizing device in the coal slime cask, conveniently receive the coal slime water, the pan feeding pump on be equipped with the converter, through the delivery pressure of converter control feeding pump, have simple structure, reasonable in design, select separately efficient, select separately the precision high, select separately effectual, adaptability advantage such as strong.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in the attached drawing, the system for efficiently sorting fine-grained oxidized coal slime is characterized by comprising a coal slime bucket 1, a feeding pump 2, a hydrocyclone 4, a spiral separator 5, a clean coal slime laminated vibrating fine screen 6, a clean coal slime centrifugal dehydrator 7, a tail coal slime arc dehydration screen 8, a tail coal slime high-frequency vibrating dehydration screen 9, a flotation machine or a concentrator, wherein the coal slime bucket 1 is communicated with a feeding port of the hydrocyclone 4 through a conveying pipeline, the conveying pipeline is provided with the feeding pump 2 and a valve, an overflow pipe of the hydrocyclone 4 is communicated with the flotation machine or the concentrator 10 through the conveying pipeline, a bottom flow pipe of the hydrocyclone 4 is communicated with the spiral separator 5 through the conveying pipeline, a concentrate outlet of the spiral separator 5 is communicated with the clean coal slime laminated vibrating fine screen 6 through the conveying pipeline, a screen underflow outlet of the clean coal slime laminated vibrating fine screen 6 is communicated with the coal slime bucket 1 through the conveying pipeline, the oversize export of clean coal mud stromatolite vibration fine screen 6 be linked together through pipeline and clean coal mud centrifugal dehydrator 7, the filtrate export of clean coal mud centrifugal dehydrator 7 be linked together through pipeline and coal slime cask 1, the dehydration back product export of clean coal mud centrifugal dehydrator 7 is the clean coal product, the tailing export of spiral sorter 5 be linked together through pipeline and tail coal mud arc dehydration sieve 8, the undersize export of tail coal mud arc dehydration sieve 8 be linked together through pipeline and flotation machine or concentrator 10, the oversize export of tail coal mud arc sieve 8 is linked together through pipeline and tail coal mud high frequency vibration dehydration sieve 9, the undersize export of tail coal mud high frequency vibration dehydration sieve 9 be linked together through pipeline and flotation machine or concentrator 10, the oversize of tail coal mud high frequency vibration dehydration sieve 9 be the middlings product, coal slime cask 1 and hydrocyclone 4's pan feeding mouth between be equipped with manometer and pressure sensor 3, through the manometer real-time supervision delivery pressure condition, coal slime cask 1 be equipped with the cylindrical cone type, be equipped with liquid level monitoring device and moisturizing device in the coal slime cask 1, conveniently receive the coal slime water, pan feeding pump 2 on be equipped with the converter, through the delivery pressure of converter control feeding pump 2.
When the invention is used, slime water is conveyed to a hydrocyclone 4 for classification operation by a feeding pump 2 under the pressure of 0.1-0.2Mpa, the feeding pressure is detected in real time by a pressure sensor 3, an overflow product of the hydrocyclone 4 enters a flotation machine or a thickener 10, a bottom flow product of the hydrocyclone 4 automatically flows into a spiral separator 5 for separation operation, a concentrate product of the spiral separator 5 enters a clean slime laminated vibrating fine screen 6 for dehydration treatment, a screen underflow of the clean slime laminated vibrating fine screen 6 returns to a slime bucket 1, a screen overflow of the clean slime laminated vibrating fine screen 6 enters a clean slime centrifugal dehydrator 7 for final moisture control, a filtrate of the slime centrifugal dehydrator returns to the slime bucket 1, and a product dehydrated by the slime centrifugal dehydrator becomes a qualified clean coal product. The tailing products separated by the spiral separator 5 are dehydrated by a tailing sludge arc dehydration sieve 8, undersize of the tailing sludge arc dehydration sieve 8 enters a flotation machine or a thickener 10, oversize of the tailing sludge arc dehydration sieve 8 enters a tailing sludge high-frequency vibration dehydration sieve 9 for secondary dehydration, undersize of the tailing sludge high-frequency vibration dehydration sieve 9 enters the flotation machine or the thickener 10, and oversize of the tailing sludge high-frequency vibration dehydration sieve 9 becomes a middling product. The new process for efficiently sorting the fine-grained oxidized coal slime is characterized in that a pressure sensor 3 is arranged between a coal slime bucket 1 and a hydrocyclone 4, the feeding pressure of the hydrocyclone 4 is monitored in real time, the grading effect is adjusted in time, the underflow product of the hydrocyclone 4 automatically flows into a spiral sorting machine 5 in the efficient fine-grained oxidized coal slime sorting system, and the concentrate of the spiral sorting machine 5 is dehydrated by a fine coal slime laminated vibrating fine screen 6 and a fine coal slime centrifugal dehydrator 7 to form a fine coal product; the tailing products of the spiral separator 5 are processed by a tailing slurry arc dewatering screen 8 and a tailing slurry high-frequency vibration dewatering screen 9 to form middling products.
The system adopts a matching process consisting of a hydrocyclone 4, a spiral separator 5 and a laminated vibrating fine screen to carry out high-efficiency separation on fine-grained oxidized coal slime with poor floatability, can adjust the influence factors such as the feed concentration of the hydrocyclone 4, the feed pressure, the product interceptor opening degree of the spiral separator 5, the sieve seam specification of the laminated vibrating fine screen and the like to carry out real-time adjustment on separation indexes so as to achieve the purposes of controllable and adjustable product quality and flexible and convenient production, adopts the hydrocyclone 4 to strictly control the upper limit of the granularity in an overflow product, adopts the spiral separator 5 to carry out high-efficiency separation on the plus 0.074mm grain fraction in a underflow product of the hydrocyclone 4, adopts the laminated vibrating fine screen to carry out high-efficiency classification treatment on a concentrate product of the spiral separator 5 so as to ensure the ash content index of the product, adopts a coal slime centrifugal dehydrator to carry out final water control on oversize products of the laminated vibrating, guarantee product moisture index, the undersize thing of stromatolite vibration fine screen and the filtrating of coal slime centrifuge return coal slime cask 1, the furthest guarantees the clean coal product rate of recovery, adopt hydrocyclone 4, spiral separator 5 and stromatolite vibration fine screen to constitute supporting technology and carry out high-efficient the separation to fine fraction oxidation coal slime, can effectively solve the problem that flotation process is low to fine fraction oxidation coal slime separation efficiency, under the prerequisite that reduces the separation cost, effectively retrieve qualified clean coal product, hydrocyclone 4: a spiral sorting machine 5 in this system for the classifying operation of coal slime, most high ash content fine slime of desorption provides narrow grain fraction pan feeding for downstream spiral sorting machine 5: the system is used for sorting coarse slime in the underflow of the hydrocyclone 4 and dividing the coarse slime into a low-ash clean coal product and a high-ash tail coal product, and the clean slime in the system is laminated with a vibrating fine screen 6: a clean coal mud centrifugal dehydrator 7 for being directed at spiral separator 5's concentrate product carries out high-efficient dehydration, desliming and handles, and undersize thing advances to return coal mud cask 1, among this system: the secondary dehydration and desliming treatment is carried out on oversize products of the cleaned coal slurry laminated vibrating fine screen 6, undersize products return to the coal slurry bucket 1, and the tail coal slurry arc dehydration screen 8 in the system is: the system is used for carrying out primary dehydration and desliming treatment on tailing products of the spiral separator 5, undersize products enter a flotation machine or a thickener 10, and a tailing sludge high-frequency vibration dehydration screen 9 in the system: the secondary dewatering and desliming treatment device is used for carrying out secondary dewatering and desliming treatment on oversize products of the tailing coal mud arc dewatering screen 8, the oversize products are used as middlings products, and undersize products enter the flotation machine or thickener 10.
Claims (4)
1. The utility model provides a high-efficient fine fraction oxidation coal slime system of selecting separately, its characterized in that this system comprises coal slime cask, feeding pump, hydrocyclone, spiral sorter, clean coal slime stromatolite vibration fine screen, clean coal slime centrifugal dehydrator, tail coal slime arc dehydration screen, tail coal slime high frequency vibration dehydration screen, flotation machine or concentrator, the coal slime cask be linked together through pipeline and hydrocyclone's pan feeding mouth, pipeline on be equipped with feeding pump and valve, hydrocyclone's overflow pipe be linked together through pipeline and flotation machine or concentrator, hydrocyclone's underflow pipe be linked together through pipeline and spiral sorter, the concentrate export of spiral sorter be linked together through pipeline and clean coal slime stromatolite vibration fine screen, the undersize export of clean coal slime stromatolite vibration fine screen is linked together through pipeline and coal slime cask, the oversize export of clean coal mud stromatolite vibration fine screen be linked together through pipeline and clean coal mud centrifugal dehydrator, clean coal mud centrifugal dehydrator's filtrate export be the clean coal product through pipeline and coal slime cask, clean coal mud centrifugal dehydrator's dehydration back product export, the tailing export of spiral sorter be linked together through pipeline and tail coal mud arc dehydration sieve, the undersize export of tail coal mud arc dehydration sieve be linked together through pipeline and flotation machine or concentrator, the oversize export of tail coal mud arc dehydration sieve be linked together through pipeline and tail coal mud high frequency vibration dehydration sieve, the undersize export of tail coal mud high frequency vibration dehydration sieve be linked together through pipeline and flotation machine or concentrator, the oversize of tail coal mud high frequency vibration dehydration sieve be middlings product.
2. The system for efficiently separating fine-grained oxidized coal slime according to claim 1, characterized in that a pressure gauge and a pressure sensor are arranged on a conveying pipeline between the coal slime bucket and a feed inlet of the hydrocyclone, and the conveying pressure condition is monitored in real time through the pressure gauge.
3. The system for efficiently separating fine-grained oxidized coal slime according to claim 1, wherein the coal slime bucket is provided with a cylindrical cone, and a liquid level monitoring device and a water supplementing device are arranged in the coal slime bucket.
4. The system for efficiently separating the fine-grained oxidized coal slime according to claim 1, wherein a frequency converter is arranged on the feeding pump, and the conveying pressure of the feeding pump is controlled by the frequency converter.
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| CN201921701019.3U CN210700594U (en) | 2019-10-12 | 2019-10-12 | High-efficient fine-grained oxidized coal slime system of selecting separately |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112206920A (en) * | 2020-09-23 | 2021-01-12 | 陕西正通煤业有限责任公司 | Coarse coal slime grading system and method |
| CN114249454A (en) * | 2021-12-03 | 2022-03-29 | 内蒙古科技大学 | Cleaning method for slime water |
-
2019
- 2019-10-12 CN CN201921701019.3U patent/CN210700594U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112206920A (en) * | 2020-09-23 | 2021-01-12 | 陕西正通煤业有限责任公司 | Coarse coal slime grading system and method |
| CN114249454A (en) * | 2021-12-03 | 2022-03-29 | 内蒙古科技大学 | Cleaning method for slime water |
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