CN1583293A - Separating and extracting apparatus high-additional value mineral from dry flyash - Google Patents
Separating and extracting apparatus high-additional value mineral from dry flyash Download PDFInfo
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- CN1583293A CN1583293A CN 03126308 CN03126308A CN1583293A CN 1583293 A CN1583293 A CN 1583293A CN 03126308 CN03126308 CN 03126308 CN 03126308 A CN03126308 A CN 03126308A CN 1583293 A CN1583293 A CN 1583293A
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Abstract
An apparatus for separating high-value minerals (microbeads Fe-enriched microbeads, sub-micron microbeads, superfine powdered coal ash and residual carbon) from the dry powdered coal ash is composed of raw ash storage tank, classifying turbine separator, multi-stage turbine separator, superfine ash collecting bags, and superfine ash cabin. It integrates such functions as multi-stage separation, classifying, gradient magnetic separation, heating for demoistening and electrostatic anti-exploding.
Description
The technical field is as follows:
the invention relates to a coal ash separation and extraction device, in particular to a coal ash separation and extraction device which is suitable for thermal power, thermoelectric and large-scale steam boiler enterprises which produce electric energy in a coal-fired manner, can be directly connected with dust collection electric fields at different levels for use, and can also be used for a dry coal ash high-added-value mineral separation and extraction device of a coal ash warehouse or a peripheral processing base.
Background
Solid waste, especially fly ash, is produced and discharged in excess of hundred million tons every year in China, and is a nuisance. Although the cement can be partially utilized in cement manufacturing, road building, dam building and wall materials, the cement is low-value utilization. The invention aims to separate and extract phases with high added values, namely microbeads, magnetic beads and residual carbon, in the fly ash, so that the fly ash becomes a multifunctional novel material which can be widely applied to the fields of metallurgy, chemical industry, petroleum, rubber, building materials, thermal engineering, light industry, military, navigation and aerospace, electronic communication, agriculture, environmental protection, civil use and the like. For example, the original bead can be used for producing sintered, non-sintered, fireproof, heat-insulating and heat-insulating products in the thermal industry; the metallurgical industry replaces expensive metal preparations to be used for grain refinement and oxygen inhibition covering in the steel-making and iron-making process, and silicon-aluminum series alloy and the like are produced by direct reduction; the purified micro-beads are used for producing fireproof, waterproof, invisible and sound insulation coatings, wear-resistant and anti-corrosion paints, large-caliber glass fiber reinforced plastic sand pipes, high-strength wear-resistant concrete and the like in the construction material industry; the activated micro-beads are a large proportion of wear-resistant, corrosion-resistant and high-strength filler in the rubber, plastic and paper making industries, and are also good catalyst carriers and resin fillers in the chemical industry and grouting and well cementing materials for oil and gas fields in the petroleum industry; the reinforced micro-beads can be used as a protective layer material of a space flight vehicle, a lightening agent of a submarine and a deep sea detector, a marine oil cleaning and dirt removing agent, a sea water desalination adsorption filter material, a temperature-resistant material of a rocket launching base, a high-temperature-resistant and penetration-resistant heat sealing layer of an armored double-hardness steel plate, a superhard tool, a high-performance abrasive tool, an anti-melting and anti-corrosion container and the like; the magnetized iron-rich micro-beads are good electromagnetic wave shielding materials, can be used for military and civil anti-radiation and anti-interference engineering, and the residual carbon is in a honeycomb shape and is a good adsorption and purification material and an abrasive.
The fly ash is a bulk solid waste produced in the production of coal-fired thermal power, thermoelectricity and large-scale steam boilers of enterprises. During the combustion process of coal, non-carbon substances [ such as coal-based clayey minerals (kaolinite, illite and the like) are dehydrated at about 550 ℃, are changed into amorphous phases from monoclinic phases, are gradually melted and decomposed from 1000-1300 ℃, and generate chemical changes, wherein the kaolinite changes as follows: ]after melting, the molten material naturally shrinks into droplets under the action of surface tension, and the droplets naturally form beads after being cooled by a high-speed flowing gas, wherein unburned coal becomes carbon particles, and the particles are not completely melted into amorphous matters such as dust, and the iron content is high, so that the particles become iron-rich beads. The fly ash is subjected to detailed chemical and mineral component analysis, and a large amount of high value-added mineral components are found; such as floating beads, microbeads, iron-poor microbeads, iron-rich microbeads, residual carbon and the like, the chemical components and the mineral components of which are shown in table 1, and the separation and extraction of the iron-rich microbeads and the residual carbon are good natural resources.
TABLE 1 fly ash chemical mineral composition
| Transforming Study the design Component (A) ％ | SiO2 | Al2O3 | Fe2O3 | Na2O | MgO | CaO | K2O | TiO2 | SO3 | |||||||
| 54-60 | 25-32 | 1.1-3.8 | 0-1.15 | 2-4 | 4-10 | 1.2-3.0 | 0.7-1.5 | 1.2-2.0 | ||||||||
| Mineral substance | Quartz crystal | Mullite | Glass body | Amorphous carbon | Others | |||||||||||
| 8-10 | 16-18 | 50-70 | 1-8 | 10-12 | ||||||||||||
| Bead body Content (wt.) | Silica alumina glass body | Floating bead | Iron-rich bead | Amorphous object | ||||||||||||
| 30-85 | 0.5-1 | 1-2 | 10-12 | |||||||||||||
The chinese patent application publication No. 86108607 provides a method for sorting glass beads from fly ash by a rapid shaker. Unlike the dry process of the present invention.
The Chinese patent application publication No. 87104411 provides a wet sorting system for fly ash hollow glass beads in a power plant. Unlike the dry process of the present invention.
The Chinese patent application with publication number 1310059 provides a sorting and grading device for nanometer ultrafine powder and hollow microspheres, which is formed by connecting 10 grades through a fan and filter screens with different purposes to obtain 1-100 nm ultrafine powder and 101-999 nm ultrafine powder and hollow microspheres, wherein the daily yield is 500-10000 kg. The method belongs to dry-method superfine separation and classification, has the same characteristics with the method, but can realize the separation and classification of different particles by beads only by a filter screen, has small treatment capacity, is different from the vortex airflow separation principle of the invention, and has great treatment capacity.
The chinese patent application publication No. 2356759 provides an adjustable forced vortex separator for separating coarse and fine fly ash. The method has the same aspects as the method, but the high value-added minerals are extracted in a non-separation mode.
The Chinese patent application publication No. 2240399 provides an airflow type powder particle size classifier, which is used for classifying the fineness of fly ash to reach the standard of commercial fly ash. Unlike the terminal object of the present invention.
The Chinese patent application publication No. 128965 provides a fast-assembly sorting system, which is different from the present invention in that the coal ash in each stage of electric field of electric dust collection is respectively transported and loaded by a screw conveyer.
The Chinese patent application publication No. 1104934 provides a wet separation method of fly ash cenospheres, which is a slot precipitation method for separating high, medium and low grade cenospheres by eight-grade separation. Unlike the dry process of the present invention.
The Chinese patent application with publication number 86202110 provides an impeller dust-removing winnowing machine, which belongs to the equipment for winnowing fine granular materials in the industries of comprehensive utilization of fly ash, chemical materials, refractory materials and the like, and is provided with a winnowing disk on a main shaft which can be vertically and horizontally arranged. The magnetic separator has the similar principle with the invention, but has the functions of non-micro-bead, magnetic separation and superfine.
The Chinese patent application publication No. 2046407 provides a device for recovering and classifying floating beads of fly ash. Unlike the dry process of the present invention.
The Chinese patent application with publication number 2086171 provides a self-excited guide type high-concentration fly ash floating bead separator. Unlike the dry process of the present invention.
The chinese patent application publication No. 2291216 provides a floating bead sorter. Unlike the dry process of the present invention.
The Chinese patent application publication No. 1116968 provides a separator for ultrafine powder and hollow microbeads, which is the same type as publication No. 1310059 and the same principle as that of the present invention, and belongs to the same application as the present invention, and belongs to the dry ultrafine separation and classification.
Chinese patent application publication No. 2272328 provides an enhanced fines classification hydrocyclone. Unlike the dry process of the present invention.
Publication No. 4.112.256, 1978.9.19 reports that U.S. patent employed a screen filtration method for separating extracted microbeads. The daily treatment capacity is 15 tons, which is different from the vortex airflow separation principle of the invention, and the removal force is greatly different.
Japanese patent publication No. 9-151386.1997.6.10 discloses a method for separating pulverized fuel ash by crushing, magnetic separation and impurity removal, which has the same magnetic separation as the method of the present invention, but has the functions of non-microbead, magnetic separation and superfine.
The Chinese patent application with the authorization publication number of CN2281845Y provides a coal ash separation and decarbonization machine, which is similar to the coal ash separation and decarbonization machine in magnetic separation, but has the functions of non-microbead separation, magnetic separation and superfine separation.
The chinese patent application publication No. CN1248181A provides a method and apparatus for separating carbon from fly ash, which is different from the present invention in that fly ash with humidity within a certain range is fed into a triboelectric separation apparatus, and finally charged carbon particles are separated from the fly ash.
The Chinese patent publication No. 88104580.2 discloses a method for sorting glass microbeads from fly ash, which uses a hot-blast stove to separate the hollow glass microbeads under the action of an electric field, and has a very different treatment capacity from the vortex airflow separation principle of the invention.
The invention content is as follows:
the invention aims to provide separation and extraction equipment for high-added-value mineral microbeads, magnetic beads, residual carbon and the like of dry fly ash, so that a large amount of solid waste fly ash discharged by billions of tons in China can be fully utilized, and the recyclable utilization of resources is realized.
The whole set of equipment can be directly connected with electric fields of all levelsof thermal power, thermoelectricity and electric dust collection of large steam boilers for use, and can also be used for a fly ash warehouse or a peripheral processing base. According to the Stokes law that the cyclone particles with different particle sizes, different shapes and different capacities have different centrifugal acceleration, gravitational acceleration and equilibrium terminal velocity in laminar flow state, after the dry fly ash enters the equipment, the dry fly ash generates the comprehensive actions of impact, collision, flutter, friction and the like in the frequency modulation and high-speed rotor multistage vortex airflow to separate spherical particles and attached unshaped objects from each other, so that microbeads and ultrafine fly ash with different particle sizes of 0.1-380 mu m are obtained, and the process belongs to a fine and ultrafine separation and classification process from the technical point of view. The invention has the advantages that the mass of the fly ash in each place is closely and inseparably connected with the fineness of the raw coal powder, the combustion mode, the air distribution and oxygen assistance, the combustion temperature, the working condition of a boiler, the furnace operation and the like, and the invention can separate and extract 30-70% of high-attachment-value minerals, 95% of microbead rate and 90% of microbead integrity rate from the fly ash.
The fly ash is used for separating and extracting high-value-added minerals such as microbeads, magnetic beads, residual carbon and the like, and the fly ash has the advantages of wide material source, low price, wide application range and large market potential, and relates to industrial policies with multiple industries and can enjoy preferential national benefits. The storage land occupation of each ten thousand tons of fly ash is about 1334m2The sized FZ4 fly ash separation and extraction microbead complete equipment is used for treating 4-10 tons of fly ash per hour, the annual treated fly ash is about 3.5 ten thousand tons, 7 mu of cultivated land can be saved by the fly ash processed and utilized by equipment every year, the annual value of each mu of land is 2 ten thousand yuan, the total cost of treatment such as conveying, landfill and environment protection is 25 yuan/ton, and the cost can be directly reduced for enterprises in one year. The fly ash is comprehensively utilized as a resource, minerals with high added values are separated and extracted, and the fly ash is put into the market as a new material, so that huge economic, social and environmental benefits can be brought to related enterprises and countries, and sustainable development of economy in China can be effectively promoted.
The technical scheme of the invention is as follows: a kind of dry fly ash high-added mineral separation and extraction equipment, including the raw ash storage tank, the grading turbine separator, the multi-stage turbine separator, the ultra-fine dust collecting device of the bundling bag and the ultra-fine dust bin; the grading turbine separator is provided with a raw material inlet and a fine material outlet, the multistage turbine separator is provided with a raw material inlet and a fine material outlet, and the discharge end of the raw ash storage tank is communicated with the raw material inlet of the grading turbine separator through an ash wear-resistant pipeline; the fine material outlet of the grading turbine separator is communicated with the raw material inlet of the multistage turbine separator through an ash wear-resistant pipeline, and the fine material outlet of the multistage turbine separator is connected with the cluster bag ultrafine ash dust collecting device through an ash wear-resistant pipeline.
The method comprises the steps of quantitatively feeding a negative pressure ash pipe into a fly ash storage bin with a heat preservation and dehumidification device by a metering electromagnetic valve according to hourly treatment capacity, enabling the negative pressure ash pipe to enter a 1, 2, 3-n-stage multi-stage separator, generating comprehensive utilization such as impact, collision, flutter, friction and the like under the action of wind and multi-stage vortex airflow generated by a frequency modulation grading turbine to separate spherical particles from attached unshaped objects, realizing separation and extraction of different spherical particles at each stage under different wind speeds and frequency modulation turbine rotating speeds, enabling a separated extract to enter a gradient magnetic separator through the metering electromagnetic valve to realize separation of iron-rich microbeads and residual carbon, further distributing the iron-rich microbeads, the residual carbon and ultrafine fly ash into a multi-layer automatic screening machine by a bidirectional feeding auger, and obtaining products such as microbeads, iron-rich microbeads, residual carbon and ultrafine fly. The equipment for separating and extracting the dry fly ash high-added-value minerals is a steel structure, is lined with a wear-resistant material, each grade of separator is provided with an adjustable air distribution valve, and all materials and main and auxiliary machines are made in China and are totally closed without pollution.
The invention can realize human control and program control on line, and the program control system adopts a Programmable Controller (PC) control mode and changes hardware wiring into software control. IP1612A-220 model programmable controller, it has four analog quantity inputs, two model quantity outputs, each AC DC output switch has contactless solid key electrical apparatus bearing 8A load current, and it has real-time communication function, on-line monitoring, internal parameter modification and real-time state monitoring display function. The device is provided with ladder diagram logic programming simulation software, can directly utilize each grade of microcomputer to realize off-line programming, downloading and simulation, and does not need a special programmer. The automatic control system comprises operating equipment (a master switch, a start button, a stop button and a reset button) and automatic control equipment (a current sensor and a granularity sensor), wherein the output equipment mainly controls a contactor, an electromagnetic valve, an indicator light and a frequency converter of a motor, so that the requirements of the production process can be met, the analog control of temperature, flow, current, granularity and the like is completed, the functions of the whole machine are integrated, and the whole machine is intelligent.
Compared with the prior art, the invention has the advantages that:
1. the invention relates to the first set of separation and extraction equipment for processing high value-added minerals (from micro-beads, magnetic beads, carbon residue and the like) with large fly ash amount (more than 200 tons per day) which is known in China at present.
2. The raw material of the invention is derived from the solid waste fly ash which is everywhere, the material is easy to obtain and cheap, and the high value-added minerals such as micro-beads, magnetic beads, residual carbon and the like which are extracted and separated are multifunctional and multipurpose materials, and the product can completely replace non-renewable resources, thereby being beneficial to the sustainable development of the economy of China.
3. The application of the invention realizes the resource recycling, can enjoy the national tax-free treatment, and the produced product can save foreign exchange for purchasing the materials for the country and export the foreign exchange, so the direct and indirect social and economic benefits generated by the method can be a huge number.
4. The invention integrates multi-stage separation, grading, gradient magnetic separation, heating dehumidification and an electrostatic explosion-proof device, realizes negative pressure closed cycle, is controllable by people and machines in the whole production process, has large treatment capacity (4-40 t/h), can meet the separation and extraction of high added value minerals such as microbeads with 0.1-380 mu m, iron-rich microbeads, submicron microbeads, ultrafine fly ash, residual carbon and the like, has compact and reasonable equipment layout and small floor area (about 400 m)2) And can be automatically packaged and filled in bulk, which is not provided by the similar equipment for retrieving the known patent of the filed state at present.
5. The invention can be used for separating and classifying the fly ash to extract the minerals with high added values, and is also suitable for separating and classifying various dry powder and hollow microspheres. Such as mica powder, metal powder, kaolin powder, silicon carbide, corundum balls, lime powder, quartz powder, pumice powder, kyanite group powder, dolomite powder, zircon powder, magnesite powder, refractory clay, high alumina clay, alumina, feldspar, wollastonite, nepheline, fluorite, alunite, borax, graphite, zeolite, calcite, garnet, bentonite, diatomaceous earth, illite, rectorite, red mud, food, medicine, etc.
6. The performance of the invention is incomparable with similar equipment at home and abroad. As reported in U.S. Pat. No. 5, 1978.9.19, the throughput is only 15 tons per day.
Drawings
FIG. 1 is a front view of a structure of a separation and extraction device for high value-added minerals from dry fly ash,
FIG. 2 is a top view of the structure of a dry fly ash high value-added mineral separation and extraction device,
FIG. 3 is a structural diagram of a grading turbine separator of a dry fly ash high-value-added mineral separation and extraction device,
figure 4 is a block diagram of an upper feed multi-stage turbo separator,
FIG. 5 is a block diagram of a lower feed multi-stage turbo separator.
The specific implementation mode is as follows:
in fig. 1 and 2: 1 is a bag type pressure reducing and dust collecting opening of an original ash storage tank; 2, a raw ash storage tank; 3 is a coming ash wear-resistant pipeline; 4, a grading turbine separator; 5 is a metering electromagnetic valve; 6 is a multilayer heating constant temperature dehumidification device; 7 is a multi-stage turbine separator; 8 is a bundling bag ultra-fine ash dust collecting device; 9 is a superfine ash bin; 10 is a negative pressure fan; 11 is an automatic telescopic feeder for a bulk vehicle; 12 is an automatic metering bagging machine; 13. 16 is a gradient magnetic separator; 14 is a bidirectional feeding auger; 15 is a multilayer automatic sieving machine; 17 is a conical feeding hopper; 18 is an automatic metering electromagnetic valve; 19 is an adjustable air distribution valve; 20 is a raw ash input pipe; 21 is an all-steel structure platform; 22 is an automatic air ballast; 23 is a decompression chamber; 24 is a fan motor; 25 is temperature couple; and 26 is an electrostatic guide screen.
The structure of the invention is shown in fig. 1 and fig. 2: : comprises a raw ash storage tank 2, a grading turbine separator 4, a multi-stage turbine separator 7, a cluster bag ultrafine ash dust collecting device (8) and an ultrafine ash bin 9; a raw material inlet 4-5 and a fine material outlet 4-7 arearranged on the grading turbo separator 4, a raw material inlet 7-1 and a fine material outlet 7-3 are arranged on the grading turbo separator 7, and the discharge end of the raw ash storage tank 2 is communicated with the raw material inlet 4-5 of the grading turbo separator 4 through the ash abrasion-resistant pipeline 3; the fine material outlet 4-7 of the grading turbine separator 4 is communicated with the raw material inlet 7-1 or 7-6 of the multistage turbine separator 7 through the ash coming wear-resistant pipeline 3, and the fine material outlet 7-3 of the multistage turbine separator 7 is connected with the bundling bag ultrafine ash dust collecting device 8 through the ash coming wear-resistant pipeline 3. A multi-layer heating constant-temperature dehumidifying device 6 is arranged on the ash coming abrasion-resistant pipeline 3. An electrostatic guide screen 26 is arranged on the bundling bag ultrafine dust collecting device 8. A bidirectional feeding packing auger 14 and a multilayer automatic sieving machine 15 are arranged below the grading turbine separator 4.
The grading turbine separator 4 is shown in figure 3 and comprises a machine body 4-1 and a grading chamber 4-2 in the machine body, a grading rotor 4-4 and a grading wheel blade 4-3 are arranged in the grading chamber 4-2, a grading wheel shaft 4-6 is arranged on the grading rotor 4-2, a gap adjusting cone 4-11 is arranged below a discharge port at the lower part of the grading chamber 4-2, a raw material inlet 4-5 and a fine material outlet 4-7 are arranged at the upper part of the machine body 4-1, more than two multiple air inlets 4-8, 4-9 and 4-10 are arranged on the side surface, and a coarse material outlet 4-12 is arranged at the lower part; the inner wall of the machine body 4-1 is covered with a wear-resistant layer 4-13.
The multistage turbo separator 7 is shown in fig. 4 and 5 and comprises a machine body 7-8 and a classification wheel 7-2 inside the machine body; the upper part or the lower part of the machine body 7-8 is provided with a raw material inlet 7-1 or 7-6 and a fine material outlet 7-3, the side surface is provided with more than two multiple air inlets 7-4, and the lower part is provided with a coarse material outlet 7-5; the inner wall of the machine body 7-8 is covered with a wear-resistant layer 7-7. A multi-layer heating constant-temperature dehumidifying device 6 is arranged on the ash coming abrasion-resistant pipeline 3. An electrostatic guide screen 26 is arranged on the bundling bag ultrafine dust collecting device 8.
The working process of the invention is as follows:
the dry fly ash can be fed into an ash inlet pipeline 3 from an electric field at each level of electric dust collection or a fly ash raw ash storage tank 2 through an ash inlet pipeline 3, under the action of centrifugal force and airflow given by calculated air volume, ash volume and turbine rotating speed, the raw material enters a multi-level turbine separator 4 from the upper part of a machine body 4-1, minerals with the grain size larger than 325 meshes fall into the lower part of the machine body 4-1 through a gap adjusting cone 4-11 under the action of a classifying rotor 4-4 and a classifying wheel blade 4-3 in a classifying chamber 4-2, are separated from a coarse material outlet 4-12, enter a gradient magnetic separation impurity remover 13 for gradient magnetic separation and impurity removal, and are fed into a multi-layer automatic sieving machine 15 to sieve out microbeads with different grades according to different purposes after separation of iron-rich microbeads and residual carbon is realized. Fine materials enter a raw material inlet 7-1 or 7-6 of a multistage turbo separator 7 from a fine material outlet 4-7 under the action of a multi-time air inlet 4-8, 4-9 and 4-10, coarse materials are discharged from a coarse material outlet 7-5, and finer materials enter a next-stage separator for separation from a fine material outlet 7-3 under the action of a multi-time air inlet 7-4; the fly ash entering the multistage turbine separator in each stage is subjected to primary separation treatment, and mineral and amorphous superfine fly ash with 325-500 meshes, 500-800 meshes, 800-1200 meshes and different particle size intervals can be obtained respectively.
In order to ensure that submicron and ultrafine fly ash is dried in air in the separation and classification process and prevent the powder from absorbing moisture and agglomerating, a multilayer heating constant-temperature dehumidifying device 6 is added on a pipeline, and an electrostatic guide screen 26 is arranged for preventing dust explosion caused by static electricity.
The invention can realize human control and machine control on line.
The invention can realize automatic metering bagging 12 and bulk tank car 11 on line by separating and extracting the dry fly ash high additional mineral.
The present invention has the practical purpose of increasing or decreasing the separation and classification level according to the mineral demand.
Claims (5)
1. A separation and extraction device for dry fly ash high-additive minerals is characterized in that: comprises a raw ash storage tank (2), a grading turbine separator (4), a multi-stage turbine separator (7), a bundling bag ultrafine ash dust collecting device (8) and an ultrafine ash bin (9); a raw material inlet (4-5) and a fine material outlet (4-7) are arranged on the grading turbine separator (4), a raw material inlet (7-1) and a fine material outlet (7-3) are arranged on the grading turbine separator (7), and the discharge end of the raw ash storage tank (2) is communicated with the raw material inlet (4-5) of the grading turbine separator (4) through an ash-coming wear-resistant pipeline (3); the fine material outlet (4-7) of the grading turbine separator (4) is communicated with the raw material inlet (7-1) or (7-6) of the multistage turbine separator (7) through the coming ash wear-resistant pipeline (3), and the fine material outlet (7-3) of the multistage turbine separator (7) is connected with the bundling bag ultrafine ash dust collecting device (8) through the coming ash wear-resistant pipeline (3).
2. The dry fly ash high additive mineral separation and extraction equipment as claimed in claim 1, which is characterized in that: the grading turbine separator (4) comprises a machine body (4-1) and a grading chamber (4-2) inside the machine body, a grading rotor (4-4) and a grading wheel blade (4-3) are arranged in the grading chamber (4-2), a gap adjusting cone (4-11) is arranged below a discharge port at the lower part of the grading chamber (4-2), a raw material inlet (4-5) and a fine material outlet (4-7) are arranged at the upper part of the machine body (4-1), more than two multiple air inlets (4-8) and (4-9) are arranged on the side surface, and a coarse material outlet (4-12) is arranged at the lower part of the machine body; the inner wall of the machine body (4-1) is covered with a wear-resistant layer (4-13).
3. The dry fly ash high additive mineral separation and extraction equipment as claimed in claim 1, which is characterized in that: the multistage turbine separator (7) comprises a machine body (7-8) and a grading wheel (7-2) inside the machine body; the upper part or the lower part of the machine body (7-8) is provided with a raw material inlet (7-1) or (7-6) and a fine material outlet (7-3), the side surface is provided with more than two multiple air inlets (7-4), and the lower part is provided with a coarse material outlet (7-5); the inner wall of themachine body (7-8) is covered with a wear-resistant layer (7-7).
4. The dry fly ash high additive mineral separation and extraction equipment as claimed in claim 1, which is characterized in that: a multi-layer heating constant-temperature dehumidifying device (6) is arranged on the ash coming wear-resistant pipeline (3).
The dry fly ash high additive mineral separation and extraction equipment as claimed in claim 1, which is characterized in that: an electrostatic guide screen (26) is arranged on the bundling bag ultrafine dust collecting device (8).
5. The dry fly ash high additive mineral separation and extraction equipment as claimed in claim 1, which is characterized in that: a bidirectional feeding packing auger (14) and a multilayer automatic sieving machine (15) are arranged below the grading turbine separator (4).
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