CN86108607A - Classify precipitate bead from flyash - Google Patents
Classify precipitate bead from flyash Download PDFInfo
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- CN86108607A CN86108607A CN198686108607A CN86108607A CN86108607A CN 86108607 A CN86108607 A CN 86108607A CN 198686108607 A CN198686108607 A CN 198686108607A CN 86108607 A CN86108607 A CN 86108607A CN 86108607 A CN86108607 A CN 86108607A
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- ash
- flyash
- rice
- separation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/60—Glass recycling
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- Carbon And Carbon Compounds (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Classify precipitate bead from flyash belongs to the removing and the processing of combustion product or combustion residue.Its method is that leftover materials rapid table wet separation can intercept high, medium and low grade of three kinds of products after adopting conventional method will float pearl, powdered carbon and magnetic micro-beads to sort out.Wet separation is that employing mortar concentration is 10-15%, and giving grey speed is 35 kilograms/meter
2During platform, ash-feeding water is a 1.0-1.5 rice
3/ ton ash, flushing water is a 1.2-1.8 rice
3/ ton ash.The shaking table stroke is controlled to be the 2-5 millimeter, and jig frequency is 586-930 time/minute, and the inclination angle is the 0.5-3 degree.Technological process of the present invention is simple, the efficiency of separation is high, and the overall recovery of glass microballoon can reach more than 94%.No dust pollution in the assorting room.
Description
The invention belongs to the removing and the processing of combustion product or combustion residue, relate to from flyash with gravity separation method wet separation glass microballoon.
In a large amount of waste residue-flyash that coal-fired power plant discharges, except that containing unburnt charcoal of part and magnetic micro-beads, also have small light weight, be hollow and rounded or oval-shaped microballon mostly, about 1, float pearl comprising heavy pearl and proportion, be called glass microballoon usually.These are the microballon of main component with silica and alundum (Al, in flyash, account for 20% to 70%, they have that grain is thin, resistance to compression, wear-resisting, high temperature resistant, thermal conductivity factor is little and performance such as good surface activity, can be used as fillers such as plastics, coating, rubber, also can do heat preserving and insulating material.Yet the material that these are useful owing to do not find a kind of efficient and economic separation method, is not fully utilized so far yet.United States Patent (USP) 4115256(1978) once provided a kind of method and apparatus with dry method sorting magnetic microballon, charcoal, cenosphere from flyash.This method at first be with flyash by a retracting device that magnetic field is housed to reclaim magnetic micro-beads, remaining coal ash allows it pass through the separator of a high potential, and the charcoal grain sorting is come out.At last remaining component is sent in the separation chamber of a cenosphere, feed the air-flow of ionization in the bottom of chamber, make various particles be suspended state, thin dust is discharged by the top of separation chamber, thick particle is discharged by the bottom of separation chamber, and cenosphere then transports out by different separately moving lines respectively with size according to different separately weight.This method efficiency of separation is low, can not effectively above-mentioned microballon be separated from fine coal.And working condition is poor, and dust pollution is serious.Because domestic coal-fired power plant is many with wet dust collector, sorting again after the dehydration more can influence economic benefit significantly.So said method is unwell in China and uses.
The purpose of this invention is to provide a kind of efficiency of separation height, the easy wet separation method of no dust pollution.
The present invention adopts conventional method with after the floating pearl, powdered carbon and magnetic micro-beads and sort out in the flyash, and remaining material rapid table sorting can accurately intercept out high, medium and low three and keep off microballon product and tail ashes.
Floating pearl is hollow sphere, and proportion can float on the surface less than 1, and employing is floated the pearl separator and obtained from the mortar surface collecting.Because carbon granule is cellular, proportion is little, has hydrophobicity, has many fine carbon granules and is mixed in and floats in the pearl and influence its purity, and this can be by difference in specific gravity, and the way that adopts sedimentation to disperse is purified.Carbon granule in the flyash is because there is hydrophobicity, is easy to nonpolar oils to utilize turpentine oil to obtain carbon powder for foaming agent separates with other component with floatation as collecting agent.The main component of magnetic micro-beads is a tri-iron tetroxide, and therefore available magnetic method is separated recovery.Remaining non magnetic flyash mainly is heavy pearl and tail ash.It is fed in the rapid table feeder trough, flow automatically on the bed surface, on bed surface, be subjected to the synergy of current and the reciprocal symmetric motion of bed surface and loose segregation layering.Heavy in lower floor, proportion little on the upper strata.Proportion little microballon in upper strata moves downward along the bed surface incline direction under the motive force effect that is subjected to big flushing water stream quickly, enters a side of smart ash end.The big proportion particle of bottom is under the symmetric motion effect of shaking table, and the synergy owing to inertia force, friction etc. moves forward along the bed surface groove with bigger speed, enters the below, opposite of driving end, i.e. tail ash end.The proportion of particle, shape, granularity difference, the track of motion are also just different, and particle swarm begins along bed surface diagonal fanning from feed launder, discharge along shaking table face tilt direction, because of the discharge line longer, so can accurately intercept multiple quality product.
For obtaining The above results, needing the stroke of control rapid table is the 2-5 millimeter, and jig frequency is 586-930 time/minute, and suitable inclination angle is the 0.5-3 degree, and giving grey speed is 35 kilograms/meter
2. platform. the time.The confluent of shaking table comprises two parts, and a part is the ash-feeding water that feeds with ash, is controlled at 1.0-1.5 cubic meter/ton ash, and another part is the flushing water that directly is given on the shaking table, is controlled at 1.2-1.8 cubic meter/ton ash.Under the prerequisite of the topped bed surface of water layer, require water layer thin as far as possible, can make the existing good mobility of mortar like this, good loose layering is arranged again and divide band, to reach the purpose that heavy pearl separates with other component.In the process of sorting, require suitable give mortar concentration be 10-15%(by weight percentage).
Technological process of the present invention is simple, the efficiency of separation is high.The overall recovery of microballon can reach more than 94%, can obtain containing the pearl rate and be respectively high, medium and low three retaining microballon products more than 90%, 80% and 70%.
Specific embodiments of the invention are to get the former mortar that 1 ton of ash adds water formulated 12%, feed and float the pearl sorter, utilize its difference in specific gravity, float pearl and float on the surface and be collected.Residue enters and selects the charcoal operation.Add to pounce on and receive No. 0 diesel oil of agent 300 grams, foaming agent pine tar 300 grams, mechanical agitation 12 minutes is roughly selected, and then adds diesel oil 170 grams, and pine tar 170 grams are scanned.Thick smart powder carries out recleaning can obtain 71 kilograms of left and right sides carbon powders.Middle ash order is returned.Residue enters and selects the magnetic micro-beads operation.Controlling to ash concentration with concentrator is the 17%(percentage by weight), magnetic field intensity 1200 oersteds, through one roughing, recleaning obtains about 17 kilograms of the magnetic micro-beads of iron content 50%.Rapid table on the later residue of pearl, carbon powder and magnetic micro-beads is floated in sorting, and this shaking table model is XGY1000 * 600mm, and pearl is sunk in sorting.Stroke during sorting is 5 millimeters, and jig frequency is 590 times/minute, inclination angle 1.5 degree, and giving grey speed is 35 kilograms/meter
2. platform. the time, the ash-feeding water amount is controlled at 1.2 meters
2/ ton ash, 1.5 meters of washing water quantities
3/ ton ash.Control on the bed surface and obviously to divide band, pick out respectively and contain 198.6 kilograms of pearl rate 90% above products, contain the pearl rate and be 250 kilograms of products 80% or more, contain the pearl rate 240 kilograms of the products more than 70%, three kinds are kept off inferior glass microballoons.
The following table efficiency of separation of the present invention as can be seen.
In 1 ton of flyash (by weight percentage)
With containing the residue microballon in the microscopic examination mensuration tail ash is 14.25%.
The present invention is no dust pollution in assorting room, has bigger economic benefit and social benefit.
Claims (1)
- The method of classify precipitate bead is to sub-elect behind powdered carbon, the magnetic micro-beads the heavy pearl of sorting more earlier from flyash, feature of the present invention is to use the rapid table wet separation, said wet separation is to be 10-15% (percentage by weight) with mortar concentration, and giving grey speed is 35 kilograms/meter 2. platform. the time, ash-feeding water is a 1.0-1.5 rice 3/ ton ash, flushing water is a 1.2-1.8 rice 3/ ton ash.The shaking table stroke is the 2-5 millimeter, and jig frequency is 586-930 time/minute, and the inclination angle is the 0.5-3 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86108607A CN86108607B (en) | 1986-12-22 | 1986-12-22 | The method of classify precipitate bead from powder coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86108607A CN86108607B (en) | 1986-12-22 | 1986-12-22 | The method of classify precipitate bead from powder coal ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86108607A true CN86108607A (en) | 1987-11-18 |
| CN86108607B CN86108607B (en) | 1987-12-16 |
Family
ID=4803988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86108607A Expired CN86108607B (en) | 1986-12-22 | 1986-12-22 | The method of classify precipitate bead from powder coal ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86108607B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357398A (en) * | 2011-06-17 | 2012-02-22 | 金华冠华水晶有限公司 | Method for separating each component in waste residue in crystal industry |
| CN106334620A (en) * | 2015-07-08 | 2017-01-18 | 新疆宇鑫混凝土有限公司 | Active coal ash extractive with high fluidity and extraction method for active coal ash extractive |
| CN113751186A (en) * | 2021-05-25 | 2021-12-07 | 中国地质科学院郑州矿产综合利用研究所 | Process method for recovering refined carbon powder-glass beads from gasified coarse slag |
| CN113751184A (en) * | 2021-05-25 | 2021-12-07 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering glass beads and carbon powder from gasified black water fine slag |
| CN113751185A (en) * | 2021-05-25 | 2021-12-07 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering glass beads by gasification slag wet carbon extraction and dry method |
| CN114716206A (en) * | 2022-04-02 | 2022-07-08 | 中庆建设有限责任公司 | Anti-freezing, anti-permeability and anti-cracking ultrahigh-performance concrete, preparation method thereof and construction method of expansion joint protection belt |
-
1986
- 1986-12-22 CN CN86108607A patent/CN86108607B/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357398A (en) * | 2011-06-17 | 2012-02-22 | 金华冠华水晶有限公司 | Method for separating each component in waste residue in crystal industry |
| CN106334620A (en) * | 2015-07-08 | 2017-01-18 | 新疆宇鑫混凝土有限公司 | Active coal ash extractive with high fluidity and extraction method for active coal ash extractive |
| CN113751186A (en) * | 2021-05-25 | 2021-12-07 | 中国地质科学院郑州矿产综合利用研究所 | Process method for recovering refined carbon powder-glass beads from gasified coarse slag |
| CN113751184A (en) * | 2021-05-25 | 2021-12-07 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering glass beads and carbon powder from gasified black water fine slag |
| CN113751185A (en) * | 2021-05-25 | 2021-12-07 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering glass beads by gasification slag wet carbon extraction and dry method |
| CN113751184B (en) * | 2021-05-25 | 2023-03-28 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering glass beads and carbon powder from gasified black water fine slag |
| CN114716206A (en) * | 2022-04-02 | 2022-07-08 | 中庆建设有限责任公司 | Anti-freezing, anti-permeability and anti-cracking ultrahigh-performance concrete, preparation method thereof and construction method of expansion joint protection belt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86108607B (en) | 1987-12-16 |
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