CN1010286B - Method for sorting hollow glass beads from fly ash - Google Patents
Method for sorting hollow glass beads from fly ashInfo
- Publication number
- CN1010286B CN1010286B CN 87104411 CN87104411A CN1010286B CN 1010286 B CN1010286 B CN 1010286B CN 87104411 CN87104411 CN 87104411 CN 87104411 A CN87104411 A CN 87104411A CN 1010286 B CN1010286 B CN 1010286B
- Authority
- CN
- China
- Prior art keywords
- enters
- pearl
- mortar
- discharging
- microballon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000010881 fly ash Substances 0.000 title claims abstract description 12
- 239000011521 glass Substances 0.000 title claims abstract description 9
- 239000011324 bead Substances 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000012535 impurity Substances 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 26
- 238000012216 screening Methods 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 20
- 239000000725 suspension Substances 0.000 claims description 14
- 239000000428 dust Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 238000007885 magnetic separation Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 20
- 239000002002 slurry Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract 1
- 239000011049 pearl Substances 0.000 description 35
- 239000002956 ash Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000011325 microbead Substances 0.000 description 4
- 239000010883 coal ash Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000008396 flotation agent Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000007777 multifunctional material Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The present invention is a method for separating hollow glass beads from fly ash, and is a new type ? sorting method that uses ? degree of fly ash as a treasure. The main technology invented is to separate the round hollow glass beads in the fly ash slurry from other impurities and a large amount of water. The invention adapts to the separation principle formed by the movement tracks of various particles in fly ash, such as the shape, specific gravity, particle size, etc., when flowing in the suspended slurry water, to sort glass beads of different particle sizes.
Description
The present invention relates to a kind of from flyash the wet separation method of sorting hollow glass micropearl.
Floating pearl and heavy pearl is referred to as hollow glass micropearl (particle diameter is big, unit weight 0.25-0.3 wall thickness is a particle diameter about 5%, can float in microballon waterborne to claim to float pearl; Can not floating in the microballon of the water surface that particle diameter is little, unit weight 0.3-1.6, wall thickness are particle diameter 30% claims heavy pearl).Microballon is based on alundum (Al and silica, and the particle diameter of formations such as small amounts iron, calcium oxide, magnesia and sulfur trioxide is arranged is the double glazing bead of 0.2-350 micron, have nitrogen and carbon dioxide in the ball internal cavity, so it is a kind of high temperature resistant, wear-resisting, insulation, heat insulation, sound insulation, sound-absorbing and all extraordinary multifunctional material of electrical insulation properties, particularly more outstanding (resistance of general insulator raises with temperature and reduces electrical insulation properties, microballon is then opposite, and it raises and the resistance increase with temperature).Therefore, microballon also is fit to do the insulator of HTHP occasion very much except that can doing senior insulation, heat insulation, fire prevention, wear-resisting, sound-absorbing goods.
The method of existing sorting hollow glass micropearl is mainly divided dry separation and wet separation two big classes: as being that the dry separation and the United States Patent (USP) 4121945 of representative is the wet split of representative with United States Patent (USP) 4115256.When adopting dry separation, because flyash is in the dry powder shape, very easily produce the phenomenon of dust from flying, contaminated environment in work and the transportation, the flyash that is not suitable for wet technique coal ash discharging power plant is handled.
The wet separation method of United States Patent (USP) 4121945 is to carry out flotation after dry powder is made mortar, owing to adopt kerosene, flotation agent and foaming agent, bead surface is contaminated, must clean up when doing reproduced goods, and equipment is too complicated, the cost height.
The applicant is in " fly ash development application technology and the management science seminar " held in Zhenjiang, Jiangsu Province, China in December, 1985, once delivered the paper of " roughly selecting of coal fly ash hollow micro bead ", the method that is adopted is: in the future the flyash of spontaneous power plant enters suspension bed after a minute slurry, current-sharing, stirring are loose, use the cyclone sorting again, the procedure arrangement of this method is unreasonable, pearl is floated in sorting in suspension bed, and it is few not only to float pearl sorting amount, and wastes energy, increases cost.
The objective of the invention is to improve sorting microballon purity.
Solution of the present invention is:
A, the mortar with certain pressure are given people's first rotational flow sorting device;
B, the mortar that mainly contains microballon of discharging from the first rotational flow sorting device spigot enter suspension bed, and the mortar that flows out from the suspension bed overfall enters the second rotational flow sorting device after pressurization, and the impurity of discharging from the suspension bed outlet at bottom enters dust removing system;
C, the mortar of discharging from the second rotational flow sorting device overfall enter the 3rd rotational flow sorting device, and the impurity of discharging from the second rotational flow sorting device spigot enters dust removing system;
D, the impurity mortar of discharging from the 3rd rotational flow sorting device overfall are gone into dust removing system, and the microballon mortar of discharging from its spigot enters the filter and first drying oven, the finished product microballon;
E, the mortar that floats pearl that mainly contains of discharging from the first rotational flow sorting device overfall enter and float the pearl screening washer, and the oversize that floats the pearl screening washer is for floating the pearl product, and screenings enters dust removing system.
Another solution of the present invention is sent into first water concentrator, filter and drying oven for the microballon mortar of discharging from above-mentioned the 3rd rotational flow sorting device spigot and is handled.
A solution more of the present invention is: the oversize that will float the pearl screening washer is sent into second water concentrator, screening machine and second drying oven.
The present invention compares with existing method for separating has following advantage:
1, treating capacity is big, and a day processing can reach 1000 tons (in dry ash weight);
2, because before the equipment that adopts can be installed in the ash discharge pump, in the pressurizing point or under the deduster, the mortar band is compressed into screening installation, the tail ash after the sorting still can enter former ash disposal area, so need not artificial transportation;
3, sorting microballon purity height, containing the pearl rate can be greater than 75%;
4, operation is simple, and cost is low;
The present invention is described in detail below in conjunction with accompanying drawing:
Fig. 1 is a sorting process schematic flow sheet of the present invention.
By pulp feeding system 1(can be pressurizing point, export under ash discharge pump or the deduster etc.), coal ash pulp A is sent into first cyclone 2 with certain speed, mortar produces eddy flow in eddy flow primary election device, particle is under action of centrifugal force, be thrown toward outer wall, because the granular size in the mortar, proportion, the shape difference, the centrifugal force that produces is also different, heavy particle is close to outer wall, light grains is shifted to the center, thereby tell level, mortar is in the first rotational flow sorting device 2 like this, with most of water, thin soot particle and the little pearl that floats of proportion are upwards flowed out through overfall along the center of cyclone, flow to and float pearl screening washer 3, in floating pearl screening washer 3, water and thin soot particle see through filter screen inflow dust removing system M and drain, stay greatly in screening washer 3 owing to particle diameter and float pearl, flow out by floating Zhu Kou, and contain a large amount of heavy pearls and float the concentrated mortar of pearl and various impurity on a small quantity from what the first rotational flow sorting device, 2 underflow openings flowed out, inflow suspension bed 5, in suspension bed 5, mortar is sneaked among the medium current E, slowly flows to the back-end from front end, and MEDIA FLOW pipe F is housed in the bottom of suspension bed, be drilled with a lot of apertures on the pipe, by the input in pipe of special-purpose water pump, the direction of water spray and size can be controlled, and are subjected to the effect of MEDIA FLOW in order to each particle in the guiding mortar, its movement locus, distance also has nothing in common with each other, and like this, mortar forms laminar flow at suspension bed 5, the superiors are the light and round pearls that float, the centre is heavy and little heavy pearl, and orlop is polygonal impurity, has the overfall inflow feeder of the heavy pearl in upper strata of impurity along suspension bed 5 rear portions, with the water pump 16 input second rotational flow sorting device 8, the impurity of suspension bed lower floor arranges into through outlet at bottom that dust removing system M drains.
The heavy pearl that has impurity by water pump 16 inputs second cyclone 8, under action of centrifugal force, heavy and big impurity flows into dust removing system M through underflow opening and drains, small and light impurity and heavy pearl, entering the 3rd rotational flow sorting device 9 along last overfall carries out further selected, in the 3rd rotational flow sorting device, same owing to action of centrifugal force, wherein small and light impurity and most of water, flow into filter 12 through underflow opening, in filter, heavy and little impurity and minimum heavy pearl and water flow into dust removing system by filter 12 bottoms and drain together, at this moment, the heavy pearl purity of discharging from filter has reached more than 75%, can directly make commodity selling, but in order to be further purified and to remove moisture content, can send drying oven 13 to by the heavy pearl that filter 12 is discharged, along with temperature rises, moisture content evaporates heavy pearl gradually in drying oven 13, and microballon group also disperses thereupon, impurity in the group, burning converts vitreum to, and heavy pearl is purifying further, and at this moment heavy pearl purity can reach more than 85%.
To particle diameter and purity all strict float pearl, after floating 3 outflows of pearl screening washer, in current divider 17 enters water concentrator 4, wherein proportion (refers to unit weight, the back with) at the bottom of floating the big impurity such as thick carbon granules of pearl and being sunken to machine, discharge by lower part outlet C, these thick carbon granules promptly are broad-spectrum thick carbon after reprocessing, also can do high level active carbon, the pearl that floats that proportion is little enters in second screening machine 6 from upper outlet, outlet from each different-grain diameter is discharged on request under fluidised form, enter in second drying oven 7, along with furnace temperature raises, moisture content evaporates gradually, the burning of part residual impurity changes into vitreum, float pearl from what D sent, promptly be that purity is very high, the precise and tiny pearl that various particle diameters are different, require tight microballon, through current divider 17, after the 9 bottom head pieces outflows of the 3rd rotational flow sorting device, directly do not enter filter 12, but enter first water concentrator 10 through current divider 17, remove the thin carbon granules littler than microballon proportion, through first screening machine 11, under fluidised form, be divided into various particle diameters, enter filter 12 again and remove moisture content and enter first drying oven 13, at this moment can directly come out of the stove and sell the commodity that only particle diameter had requirement from the H stove, higher to requiring, as do the magnetic micro-beads that electric field screen-wall or permeability magnetic material are used, can send magnetic separator 14 to through current divider 17, be divided into magnetic micro-beads from I send and not magnetic microballon send from J, as when requiring especially little particle diameter, can send winnowing machine 15 to through current divider 17, after coming out from winnowing machine 1, particle diameter generally can be less than 10 microns, winnowing machine once can divide the two poles of the earth K and L, and sorting capable of circulation is theoretically gone down, and is divided into very little very little microballon.
Claims (5)
1, a kind of from flyash the wet separation method of sorting hollow glass micropearl, it is characterized in that:
A. the mortar that has certain pressure feeds the first rotational flow sorting device;
B. the mortar that mainly contains microballon of discharging from the first rotational flow sorting device spigot enters suspension bed, and the mortar that flows out from the suspension bed overfall enters the second rotational flow sorting device after pressurization, and the impurity of discharging from the suspension bed outlet at bottom enters dust removing system.
C. the mortar of discharging from the second rotational flow sorting device overfall enters the 3rd rotational flow sorting device, and the impurity that rotational flow sorting device spigot is discharged enters dust removing system;
D. the impurity mortar of discharging from the 3rd rotational flow sorting device overfall is gone into dust removing system, and the microballon mortar of discharging from its spigot enters the filter and first drying oven, gets the finished product microballon;
E. the mortar that floats pearl that mainly contains of discharging from the first rotational flow sorting device overfall enters and floats the pearl screening washer, and the oversize that floats the pearl screening washer is for floating the pearl product, and screenings enters dust removing system.
2, according to the method for separating of claim 1, it is characterized in that the microballon mortar of discharging from the 3rd rotational flow sorting device spigot filter with baking operation before be introduced into first water concentrator, the proportion of discharging from the first water concentrator overfall is less than the thin carbon granules of microballon, the microballon mortar of discharging from outlet at bottom enters first screening machine, and the varigrained microballon of telling from first screening machine enters filter and dryer respectively.
3, according to the method for separating of claim 1, it is characterized in that the oversize that floats the pearl screening washer enters second water concentrator, the proportion of discharging from the second water concentrator outlet at bottom is greater than the thick carbon granules that floats pearl, the pearl that floats from the discharge of the second water concentrator overfall, enter the screening of second screening machine, varigrained after the screening floats pearl and enters second dryer respectively, the varigrained pearl product that floats.
4,, it is characterized in that microballon from first dryer enters magnetic separator and carries out magnetic separation according to the method for separating of claim 1,2 or 3.
5,, it is characterized in that microballon from magnetic separator enters winnowing machine and carries out selection by winnowing according to the method for separating of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87104411 CN1010286B (en) | 1987-06-29 | 1987-06-29 | Method for sorting hollow glass beads from fly ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87104411 CN1010286B (en) | 1987-06-29 | 1987-06-29 | Method for sorting hollow glass beads from fly ash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87104411A CN87104411A (en) | 1988-05-11 |
| CN1010286B true CN1010286B (en) | 1990-11-07 |
Family
ID=4814866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87104411 Expired CN1010286B (en) | 1987-06-29 | 1987-06-29 | Method for sorting hollow glass beads from fly ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010286B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055908C (en) * | 1996-08-13 | 2000-08-30 | 孙绍奇 | Coal ash thermal material products and its prodn. method |
| CN100360442C (en) * | 2005-07-11 | 2008-01-09 | 张伟 | Hollow microbead preparation method |
| CN104483165B (en) * | 2014-11-21 | 2017-07-28 | 江苏博迁新材料股份有限公司 | The sampling method of big particle diameter powder in a kind of ultra-fine magnetic powder |
| CN107617515A (en) * | 2017-08-30 | 2018-01-23 | 四川深蓝环保科技有限公司 | A kind of method that floating bead is extracted in flyash |
| CN113751185B (en) * | 2021-05-25 | 2023-04-07 | 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 |
| CN113751186B (en) * | 2021-05-25 | 2023-04-07 | 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 |
| 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 |
| CN117682750A (en) * | 2024-02-02 | 2024-03-12 | 中科雅丽科技有限公司 | A drying system granulating and balling device |
-
1987
- 1987-06-29 CN CN 87104411 patent/CN1010286B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN87104411A (en) | 1988-05-11 |
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| GR02 | Examined patent application | ||
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