CN212503995U

CN212503995U - Device of plasma comprehensive recovery processing ardealite

Info

Publication number: CN212503995U
Application number: CN202022071355.3U
Authority: CN
Inventors: 刘冠诚
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-02-09
Anticipated expiration: 2030-09-21

Abstract

The utility model discloses a device of plasma comprehensive recovery processing ardealite, including raw materials processing system, microwave dryer, its characterized in that raw materials processing system connect microwave dryer, microwave dryer's discharge gate connect the raymond mill, the discharge gate of raymond mill is connected glassware II, plasma gasification melting furnace I is connected to glassware II, the exhanst gas outlet of plasma gasification melting furnace I be connected to gas-liquid mixer II, gas-liquid mixer II communicate smoke purifier, smoke purifier intercommunication sulfur trioxide conversion tower, sulfur trioxide conversion tower intercommunication sulfur trioxide absorption tower. The utility model has the advantages that: the utility model discloses a special process design to the ardealite recovery forms, works out the connection structure relation of a whole set of system to every special link, carries out the recovery of ardealite to the device and possesses high efficiency, energy-conservation, environmental protection and resourceization's characteristics.

Description

Device of plasma comprehensive recovery processing ardealite

Technical Field

The utility model belongs to the technical field of the metallurgy, concretely relates to device of plasma comprehensive recovery processing ardealite and extraction method thereof.

Background

As a basic chemical raw material, the amount of phosphorus ore mined every year in China currently reaches more than 4000 million tons and is increased by 5 percent. 90 percent of domestic phosphoric acid is prepared by a wet process. The wet-process phosphoric acid process is mainly used for preparing phosphoric acid by reacting sulfuric acid with phosphate ore, and 4.5-5 t of phosphogypsum can be produced by producing phosphoric acid by the wet-process every 1 t of phosphoric acid. The existing production process adopts a two-step method combining double-cylinder drying and a fluidized bed furnace to calcine. The attached water accounts for about 17 percent, and is removed by a double-drum dryer at the temperature of 100 ℃ and is controlled to be less than or equal to 3 percent. The fluidized bed furnace dehydrates for 60 minutes at the wind temperature of 600 ℃ and the material temperature of 160 ℃, and dehydrates and removes the crystallization water to the water content of 5 percent, so the process energy consumption is large and the production efficiency is low.

Disclosure of Invention

An object of the utility model is to provide a device of plasma comprehensive recovery processing ardealite.

The utility model aims at realizing like this, including raw materials processing system, microwave dryer, its characterized in that raw materials processing system connect microwave dryer, microwave dryer's discharge gate connect the raymond mill, the discharge gate of raymond mill connects glassware II, plasma gasification melting furnace I is connected to glassware II, the exhanst gas outlet of plasma gasification melting furnace I be connected to gas-liquid mixer II, gas-liquid mixer II communicate smoke purifier, smoke purifier communicates sulfur trioxide conversion tower, sulfur trioxide conversion tower communicates sulfur trioxide absorption tower.

The utility model has the advantages that: the utility model discloses a special process design to the ardealite recovery forms, works out the connection structure relation of a whole set of system to every special link, carries out the recovery of ardealite to the device and possesses high efficiency, energy-conservation, environmental protection and resourceization's characteristics.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

in the figure: 1-a pulverizer I, 2-a drying tower I, 3-a hot air blower, 4-a gas-liquid mixer I, 5-an air purifier I, 6-a collector I, 7-a microwave dryer, 8-a microwave power supply, 9-a controller, 10-a microwave generator, 11-a feeder, 12-a Raymond mill, 13-a collector II, 14-a plasma gasification melting furnace I, 15-a dust collector I, 16-a gas-liquid mixer II, 17-a smoke purifier, 18-a sulfur trioxide conversion tower, 19-a sulfur trioxide absorption tower, 20-a sulfuric acid product recovery device, 21-a hot air ejector, 22-a hot air classifier, 23-a Roots blower, 24-a high-frequency power supply, 25-an impurity removal tank and 26-a belt type vacuum filter I, 27-a drying tower II, 28-a dust collector II, 29-a gas-liquid mixer III, 30-an air purifier II, 31-a plasma gasification melting furnace II, 32-a water quenching tank, 33-a hot water dissolving tower, 34-a white carbon black sedimentation tank, 35-a carbon dioxide generator I, 36-a belt type vacuum filter II, 37-a drying tower III, 38-a grinder II, 39-a white carbon black product recovery device, 40-a conversion tank, 41-a carbon dioxide generator II, 42-a belt type vacuum filter III, 43-a drying tower IV, 44-a grinder III and 45-a light calcium carbonate product recovery device.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the present invention in any way, and any modifications or improvements based on the teachings of the present invention are within the scope of the present invention.

As shown in figure 1, a device of plasma comprehensive recovery processing ardealite, including raw materials processing system, microwave dryer 7, raw materials processing system connect microwave dryer 7, microwave dryer 7's discharge gate connect raymond mill 12, raymond mill 12's discharge gate connects tripper II 13, tripper II 13 connects plasma gasification melting furnace I14, plasma gasification melting furnace I14's exhanst gas outlet connect to gas-liquid mixer II 16, gas-liquid mixer II 16 communicate flue gas purifier 17, flue gas purifier 17 communicates sulfur trioxide conversion tower 18, sulfur trioxide conversion tower 18 communicates sulfur trioxide absorption tower 19.

The hot-blast ejector 21 of material exit linkage of plasma gasification melting furnace I14, hot-blast ejector 21 connect hot-blast grader 22, a set of material exit linkage edulcoration pond 25 of hot-blast grader 22, edulcoration pond 25 connect belt vacuum filter I26, the material exit linkage drying tower II 27 of belt vacuum filter I26, drying tower II 27 connect dust arrester II 28 the material exit linkage plasma gasification melting furnace II 31 of dust arrester II 28, the flue gas outlet of plasma gasification melting furnace II 31 pass through pipe connection white carbon black sedimentation tank 34, material export connection water quenching pond 32, hot water dissolving tower 33, white carbon black sedimentation tank 34 in proper order.

The other group of material outlets of the hot air classifier 22 are connected with a conversion pool 40, and the conversion pool 40 is communicated with a carbon dioxide generator II 41.

Raw materials processing system include rubbing crusher I1, drying tower I2, rubbing crusher I1 connect drying tower I2, drying tower I2's waste gas outlet connects gas-liquid mixer I4, drying tower I2's material outlet connects in proper order glassware I6 and microwave dryer 7.

Microwave dryer 7's exhaust outlet and gas-liquid mixer I4 link to each other, I4 connection air purifier I5 of gas-liquid mixer and set up circulation circuit through the circulating pump between the two.

And a tiny dust outlet of the collector II 13 is connected with a dust collector I15, and a tiny dust outlet of the dust collector I15 is connected with a plasma gasification melting furnace I14.

And a waste gas outlet of the dust collector II 28 is connected with a gas-liquid mixer III 29, the gas-liquid mixer III 29 is connected with an air purifier II 30, and a circulating loop is arranged between the air purifier II 30 and the gas-liquid mixer III 29 through a circulating pump.

And a gas outlet of the plasma gasification melting furnace II 31 is connected with a white carbon black sedimentation tank 34.

And the white carbon black sedimentation tank 34 is connected with a carbon dioxide generator I35.

And a material outlet of the white carbon black sedimentation tank 34 is connected with a belt type vacuum filter II 36, a liquid outlet is connected into the white carbon black sedimentation tank 34 to form a circulation loop, and the belt type vacuum filter II 36 is sequentially connected with a drying tower III 37 and a pulverizer II 38.

The conversion tank 40 is sequentially connected with a belt type vacuum filter III 42, a drying tower IV 43 and a crusher III 44, and a liquid outlet of the belt type vacuum filter III 42 is connected with the conversion tank 40 to form a circulation loop.

The working principle of the utility model is illustrated by a phosphogypsum recovery method as follows:

because the phosphogypsum is easy to agglomerate in open air, firstly, the phosphogypsum is crushed by a hammer type crusher I1, the crushed phosphogypsum is sent to a drying tower I2 for surface water drying, hot air of the drying tower I2 is heated by high frequency and provided by a hot air blower 3, waste gas of the drying tower I2 is sent to a gas-liquid mixer I4 for mixing, the mixed gas is sent to an air purifier I5 for being discharged after reaching the standard through purifying by alkali liquor such as sodium hydroxide, ammonia water and the like, materials dried by the drying tower I2 are sent to a material collector I6 for being sent to a microwave dryer 7 for removing crystal water by constant conveying quantity, the energy of the microwave dryer 7 is adjusted to proper power by a microwave power supply 8 through a controller 9 and provided by a microwave generator 10, the dried waste gas of the microwave dryer 7 contains soluble, fluorine is sent back to the gas-liquid mixer I4 to be mixed and then is purified by the air purifier I5 to be discharged, and the purifier bottom slurry mixture is recycled.

The material dried by the microwave dryer 7 is conveyed to a feeder 11 with constant conveying capacity and is conveyed to a Raymond mill 12 to be crushed to 0.074mm, the crushed material is collected by a collector II 13, the collected material is conveyed to a plasma gasification melting furnace I14 with constant conveying capacity by air jet flow for oxidative cracking, the temperature is controlled below the melting point of a solid, the micro dust of the collector II 13 is conveyed to a dust collector I15 for collection, the micro dust collected by the dust collector I15 is reversely conveyed back to the plasma gasification melting furnace I14 for oxidative cracking, the flue gas generated by the plasma gasification melting furnace I14 and the waste gas of the dust collector I15 are conveyed to a gas-liquid mixer II 16 together to be mixed and then conveyed to a flue gas purifier 17 for purification, the purified flue gas trioxide conversion tower 18 of the flue gas purifier 17 is filled with a vanadium pentoxide catalyst, the ceramic sulfur dioxide is oxidized into the sulfur trioxide absorption tower 19, the tower is filled with a ring, the sulfur trioxide is sprayed from top to bottom by concentrated sulfuric acid to absorb the sulfur trioxide, and the sulfuric acid product is recovered from the bottom to the sulfuric acid product recovery device 20;

the materials after oxidative cracking in a plasma gasification melting furnace I14 mainly contain silicon dioxide and calcium oxide and are sent to a hot air ejector 21 to be sent to a hot air classifier 22 for sorting by utilizing jet flow hot air, the air of the hot air ejector 21 is provided by a Roots blower 23, heat energy is provided by a high-frequency power supply 24, a first group of materials from the hot air classifier 22 are sent to an impurity removing pool 25, impurities except the silicon dioxide are dissolved by dilute hydrochloric acid, solid-liquid separation is carried out by a belt type vacuum filter I26, the solution is recycled, the solution is saturated and then concentrated and crystallized into inorganic salt products, new solution is replaced, the solid materials separated from the belt type vacuum filter I26 are sent to a spit drying tower II 27 for drying, after drying, collection is carried out by a dust collector II 28, after collection, sodium carbonate is added, after mixing in a mass ratio of 1:1, the materials are sent to a plasma gasification melting furnace II 31 for smelting, after waste gas-liquid mixer 29 of the dust collector II 28 is sent Air is discharged after reaching standards, bottom slurry is recycled, flue gas of the plasma gasification melting furnace II 31 is mainly carbon dioxide generated by sodium carbonate and sent to a white carbon black sedimentation tank 34 to be used as a precipitator, sodium silicate melt smelted from the plasma gasification melting furnace II 31 is quenched and broken by a water quenching tank 32 and then sent to a hot water dissolving tower 33 to be dissolved, the sodium silicate melt is sent to the white carbon black sedimentation tank 34 after being dissolved, water is added to adjust the concentration, the solid-liquid ratio is 1:8-15, because the carbon dioxide from the plasma gasification melting furnace II 31 is not enough, a carbon dioxide generator I35 provides supplement, the sediment of the white carbon black sedimentation tank 34 is conveyed to a vacuum filter II 36 to carry out solid-liquid separation, liquid returns to the white carbon black sedimentation tank 34 to be recycled, solid is sent to a drying tower III 37 to be dried, water vapor is discharged, and the solid is crushed by a crusher II 38, the white carbon black is recycled by a white carbon black product recycling device 39;

and (3) feeding calcium oxide discharged from the other group of material outlets of the hot air classifier 22 into a conversion tank 40, adding water for size mixing, wherein the solid-liquid ratio is 1:5-13, injecting carbon dioxide into the tank for neutralization reaction while stirring, feeding the calcium oxide to a belt type vacuum filter III 42 for solid-liquid separation after the neutralization reaction is completed, recycling the liquid, feeding the solid to a drying tower IV 43 for drying, discharging water vapor, and feeding the solid to a crusher III 44 for crushing into light calcium carbonate products to be recovered by a light calcium carbonate product recovery device 45.

Claims

1. The utility model provides a device of comprehensive recovery processing ardealite of plasma, includes raw materials processing system, microwave dryer (7), its characterized in that raw materials processing system connect microwave dryer (7), the discharge gate of microwave dryer (7) connect raymond mill (12), the discharge gate of raymond mill (12) is connected tripper II (13), plasma gasification melting furnace I (14) is connected in tripper II (13), the exhanst gas outlet of plasma gasification melting furnace I (14) be connected to gas-liquid mixer II (16), gas-liquid mixer II (16) communicate flue gas purifier (17), flue gas purifier (17) intercommunication sulfur trioxide conversion tower (18), sulfur trioxide conversion tower (18) intercommunication sulfur trioxide absorption tower (19).

2. The device for comprehensively recycling and treating phosphogypsum by using plasma according to claim 1, characterized in that a material outlet of the plasma gasification melting furnace I (14) is connected with a hot air ejector (21), the hot air ejector (21) is connected with a hot air classifier (22), a group of material outlets of the hot air classifier (22) are connected with an impurity removing pool (25), the impurity removing pool (25) is connected with a belt type vacuum filter I (26), a material outlet of the belt type vacuum filter I (26) is connected with a drying tower II (27), the drying tower II (27) is connected with a dust collector II (28), a material outlet of the dust collector II (28) is connected with a plasma gasification melting furnace II (31), a smoke outlet of the plasma gasification melting furnace II (31) is connected with a white carbon black sedimentation pool (34) through a pipeline, and the material outlets are sequentially connected with a water quenching pool (32), A hot water dissolving tower (33) and a white carbon black sedimentation tank (34).

3. The device for the comprehensive plasma recovery and treatment of phosphogypsum according to claim 2, characterized in that the other group of material outlets of the hot air classifier (22) is connected with a conversion pool (40), and the conversion pool (40) is communicated with a carbon dioxide generator II (41).

4. The device for the comprehensive plasma recovery and treatment of phosphogypsum according to claim 1 is characterized in that the raw material treatment system comprises a pulverizer I (1) and a drying tower I (2), wherein the pulverizer I (1) is connected with the drying tower I (2), a waste gas outlet of the drying tower I (2) is connected with a gas-liquid mixer I (4), and a material outlet of the drying tower I (2) is sequentially connected with a material collector I (6) and a microwave dryer (7).

5. The device for the comprehensive plasma recovery and treatment of phosphogypsum according to claim 1, characterized in that the waste gas outlet of the microwave dryer (7) is connected with a gas-liquid mixer I (4), the gas-liquid mixer I (4) is connected with an air purifier I (5), and a circulation loop is arranged between the air purifier I (5) and the gas-liquid mixer I (4) through a circulation pump.

6. The device for the integrated plasma recovery and treatment of phosphogypsum according to claim 1, characterized in that the micro-dust outlet of the collector II (13) is connected with the dust collector I (15), and the micro-dust outlet of the dust collector I (15) is connected with the plasma gasification melting furnace I (14).

7. The device for the comprehensive plasma recovery and treatment of phosphogypsum according to claim 2, characterized in that the waste gas outlet of the dust collector II (28) is connected with a gas-liquid mixer III (29), the gas-liquid mixer III (29) is connected with an air purifier II (30), and a circulation loop is arranged between the air purifier II (30) and the gas-liquid mixer III (29) through a circulation pump.

8. The device for comprehensively recycling and treating phosphogypsum by plasma according to claim 2, characterized in that the gas outlet of the plasma gasification melting furnace II (31) is connected with a white carbon black sedimentation tank (34), and the white carbon black sedimentation tank (34) is connected with a carbon dioxide generator I (35).

9. The device for comprehensively recycling and treating phosphogypsum by plasma according to claim 2, characterized in that the material outlet of the white carbon black sedimentation tank (34) is connected with a belt type vacuum filter II (36), the liquid outlet is connected into the white carbon black sedimentation tank (34) to form a circulation loop, and the belt type vacuum filter II (36) is sequentially connected with a drying tower III (37) and a pulverizer II (38).

10. The device for the comprehensive plasma recovery processing of phosphogypsum according to claim 3 is characterized in that the conversion tank (40) is sequentially connected with a belt type vacuum filter III (42), a drying tower IV (43) and a crusher III (44), and a liquid outlet of the belt type vacuum filter III (42) is connected with the conversion tank (40) to form a circulation loop.