CN205873916U - Utilize device of magnesium hydroxide production magnesium oxide - Google Patents

Abstract

The utility model discloses an utilize device of magnesium hydroxide production magnesium oxide, including dry powder equipment and calciner, dry powder equipment includes raw material conveying mechanism and dry powder generating means, and the calciner includes that dry powder conveying mechanism, dry powder preheating unit, dry powder calcines mechanism and product cooling body, and the mechanism is calcined to raw material conveying mechanism, dry powder generating means, dry powder conveying mechanism, dry powder preheating unit, dry powder and the product cooling body is consecutive, and dry powder generating means includes that flash drying is quick -witted, and dry powder is calcined the mechanism and is included that the whirl developments forge generating means 0. The utility model discloses an utilize device of magnesium hydroxide production magnesium oxide adopts dry powder equipment and calciner to combine together, can realize thermal make full use of to can the high -quality active oxidation magnesium of in the whole life output.

Description

A kind of device utilizing magnesium hydroxide to produce magnesium oxide

Technical field

This utility model relates to the technical field that magnesium oxide produces, and is specifically related to one and utilizes magnesium hydroxide calcining production to live The device of property magnesium oxide.

Background technology

Activated magnesia is to prepare the products such as high function fine inorganic material, electronic component, ink, harmful gas adsorbent Important source material, its chemical composition, the difference of physical aspect index and common magnesium oxide is little, but its particle size distribution, specific surface area, Activity, microscopic pattern and crystal structure are inconsistent with the requirement of common magnesium oxide.

Qinghai Province of China is dispersed with a large amount of salt lake, utilizes the magnesium ion in salt lake bittern to react preparation hydroxide with precipitant Magnesium is a kind of magnesium downstream product that chemical plant, Salt Lake Area is generally developed.But ordinary hydrogen magnesium oxide physico-chemical property is undesirable, for carrying Its value-added content of product high, need to carry out calcination processing to it and prepare magnesium oxide.The most how to utilize the calcining of this magnesium hydroxide raw The activated magnesia producing high-quality is our present stage problem to be solved.

Utility model content

The purpose of this utility model is to provide a kind of device utilizing magnesium hydroxide calcining to produce activated magnesia, is used for Solve the problem of activated magnesia how utilizing existing ordinary hydrogen magnesium oxide to produce high-quality.

To achieve these goals, this utility model provides following technical scheme: one utilizes magnesium hydroxide to produce oxidation The device of magnesium, including dry powder device and calciner, described dry powder device includes feedstock transportation mechanism and dry powder generating mechanism, institute Stating calciner and include dry powder conveying mechanism, dry powder preheating mechanism, dry powder calcining mechanism and product cooling body, described raw material is defeated Send mechanism, dry powder generating mechanism, dry powder conveying mechanism, dry powder preheating mechanism, dry powder calcining mechanism and product cooling body successively It is connected,

Described dry powder generating mechanism includes flash dryer, and described dry powder is calcined mechanism and included circulation flow dynamic furnace.

Preferably, described feedstock transportation mechanism includes that belt conveyor and feeding tank, described feeding tank are arranged on described skin The lower section of belt conveyor,

Described feeding tank includes the first feeding tank and the second feeding tank, the corresponding described first feeding tank of described belt conveyor It is respectively arranged with the first scraper plate and the second scraper plate, described second scraper plate and described Belt Conveying with the position of described second feeding tank Machine is fixing to be connected, and described first scraper plate is flexibly connected with described belt conveyor, described first feeding tank and described second feeding Being provided with level-sensing device in tank, described level-sensing device controls according to the material position in described first feeding tank and described second feeding tank Rising and falling and the running status of described belt conveyor of described first scraper plate.

Preferably, described dry powder generating mechanism also includes air feed system and the first pulsed jet cloth filter, described air feed system System includes the air filter being sequentially connected, deafener, supplies blower fan and natural gas fired incinerators, and described natural gas fired incinerators is with described The air inlet of flash dryer is connected, and described first pulsed jet cloth filter is connected with the discharging opening of described flash dryer.

Preferably, described dry powder preheating mechanism includes primary cyclone, secondary cyclone and preheating feeder, The exhaust outlet of described primary cyclone is connected by the first pipeline with the air inlet of described secondary cyclone, and described two The level discharge port of cyclone separator is connected by second pipe with the air inlet of described primary cyclone, described one cyclonic The corresponding described preheating feeder of the discharge port of separator is arranged,

The charging aperture of one end of described preheating feeder corresponding described dry powder calcining mechanism is arranged.

Preferably, described calciner also includes what circulation and stress mechanism, described circulation and stress mechanism included being sequentially connected First-class heat exchanger, secondary heat exchanger, the second sack cleaner and recovery feeder, the charging aperture of described first-class heat exchanger is with described The exhaust outlet of secondary cyclone is connected, and one end of described recovery feeder is correspondingly arranged at the upper of described preheating feeder Side.

Preferably, described dry powder calcining mechanism also includes the eddy flow dynamic calcining being all connected with described circulation flow dynamic furnace Secondary stove and heating system, described heating system includes combustion of natural gas room.

Preferably, described product cooling body includes three-stage cyclone separator, the exhaust outlet of described three-stage cyclone separator It is connected by the air inlet of pipeline with described primary cyclone,

Described heating system also includes wind mixed chamber, is arranged between combustion of natural gas room and described circulation flow dynamic furnace, Described three-stage cyclone separator is connected by pipeline with described wind mixed chamber.

Preferably, the described device utilizing magnesium hydroxide to produce magnesium oxide also includes storage package mechanism, described storage bag Mounting mechanism includes the 4th sack cleaner, magnesium oxide storage bin, magnesium oxide conveyer and the packer set gradually.

Compared to prior art, described in the utility model utilize magnesium hydroxide produce activated magnesia device have with Lower advantage: the device that this utility model utilizes magnesium hydroxide to produce magnesium oxide uses dry powder device and calciner to combine, and makes Obtain feed hydrogen magnesium oxide filter cake in dry powder device, first make the magnesium hydroxide dry powder forming moisture content less than 1%, then lead to Cross calciner and magnesium hydroxide dry powder is sintered into magnesium oxide, the activated magnesia that end product magnesium oxide is high-quality of gained, Can apply in the manufacturing process such as high function fine inorganic material, electronic component, ink, harmful gas adsorbent as raw material. Waste heat after using device of the present utility model to make magnesium hydroxide filter cake be converted to magnesium hydroxide dry powder is fully utilized, Waste heat enters in calciner and continues calciner is carried out heat supply, decreases the thermal losses that this utility model is overall, Meanwhile, automatic degree of the present utility model is high, uses this utility model to realize the production of activated magnesia, and plant area is clean, dust Few.

Magnesium hydroxide dry powder first carrying out in calciner multistage preheating calcine, the operation of multistage preheating makes hydrogen the most again Magnesium oxide dry powder has obtained sufficient preheating, and in warm, the heat in each stage can also realize the transmission of each pipeline enclosure, from And can realize making full use of for these heats, and this warm entirety uses the mode of air-flow conveying, it is simple to thing The heat exchange of material, improves production load of the present utility model.Also carry out reclaiming profit again to the heat of output in this warm With, thus improve the utilization rate of heat, reduce the consume of energy.In later stage calcination process, use eddy flow dynamic Calcining furnace, dry material still uses the mode of air-flow conveying, thus improves the efficiency of calcining, decreases forging of material Burn the time of staying, while improving product purity, farthest remain the activity of product.

Accompanying drawing explanation

By reading the detailed description of hereafter preferred implementation, various other advantage and benefit common for this area Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as this practicality Novel restriction.In the accompanying drawings:

Fig. 1 shows that a kind of preferred implementation of this utility model utilizes magnesium hydroxide to produce the device of activated magnesia The structural representation of middle dry powder device part.

Fig. 2 shows that a kind of preferred implementation of this utility model utilizes magnesium hydroxide to produce in the device of activated magnesia The structural representation of calciner part.

Fig. 3 shows that a kind of preferred implementation of this utility model utilizes magnesium hydroxide to produce in the device of activated magnesia The structural representation of storage package mechanism section.

Reference:

1-feedstock transportation mechanism, 11-belt conveyor,

12-the first feeding tank, 13-the second feeding tank,

14-the first scraper plate, 15-the second scraper plate,

2-dry powder generating mechanism, 21-flash dryer,

22-air feed system, 23-the first pulsed jet cloth filter,

221-air filter, 222-deafener,

223-confession blower fan, 224-natural gas fired incinerators,

3-dry powder conveying mechanism, 4-dry powder preheating mechanism,

41-primary cyclone, 42-secondary cyclone,

43-preheats feeder, and mechanism calcined by 5-dry powder,

51-circulation flow dynamic furnace, 52-eddy flow dynamic calcining pair stove,

53-heating system, 531-combustion of natural gas room,

532-wind mixed chamber, 6-circulation and stress mechanism,

61-first-class heat exchanger, 62-secondary heat exchanger,

63-the second sack cleaner, 64-reclaims feeder,

7-storage package mechanism, 71-the 4th sack cleaner,

72-magnesium oxide storage bin, 73-magnesium oxide conveyer,

74-packer, 8-product cooling body,

81-three-stage cyclone separator.

Detailed description of the invention

This utility model provides many applicable creative concepts, and this creativeness concept can be reflected in a large number of specifically Context in.Specific embodiment described in following embodiment of the present utility model is only used as of the present utility model The exemplary illustration of detailed description of the invention, and do not constitute the restriction to this utility model scope.

The utility model will be further described with specific embodiment below in conjunction with the accompanying drawings.

As depicted in figs. 1 and 2, the present embodiment provides a kind of device utilizing magnesium hydroxide to produce magnesium oxide, including dry powder Equipment and calciner, described dry powder device includes feedstock transportation mechanism 1 and dry powder generating mechanism 2, and described calciner includes Dry powder conveying mechanism 3, dry powder preheating mechanism 4 and dry powder calcining mechanism 5, described feedstock transportation mechanism 1, dry powder generating mechanism 2, dry Powder conveying mechanism 3, dry powder preheating mechanism 4 and dry powder are calcined mechanism 5 and are sequentially connected, and described dry powder generating mechanism 2 includes that flash distillation is done Dry machine 21, described dry powder is calcined mechanism 5 and is included circulation flow dynamic furnace 51.

Said apparatus, after raw material uses the magnesium hydroxide process that magnesium ion and precipitant in salt lake bittern react preparation The magnesium hydroxide filter cake formed, the moisture content in this magnesium hydroxide filter cake is 37%.Initially with dry powder device to magnesium hydroxide Filter cake processes, and by feedstock transportation mechanism 1, magnesium hydroxide filter cake is transported in dry powder generating mechanism 2, raw at dry powder Become in mechanism 2 and by flash dryer 21, the water on magnesium hydroxide filter cake surface is evaporated, thus produce moisture content less than 1% Magnesium hydroxide dry powder.

Flash dryer 21 is the continuous chain-belt drying equipment integrating dry, pulverizing, sieve, it is adaptable to filter cake shape, cream Pasty state, the drying of sposh pasty material.It is to be entered bottom exsiccator by hot-air tangent line, and being formed under agitator drives has by force The rotation wind field of power, material is transported to inside exsiccator by feeder, and under the strong effect of high speed rotating stirring slurry, material is subject to Clashing into, rub and disperseed under the effect of shearing force, lump material is pulverized rapidly, is fully contacted with hot-air, is heated, thus Reach drying effect preferable to material.

Gained magnesium hydroxide dry powder continues to use calciner to process, and first, the magnesium hydroxide dry powder obtained passes through Dry powder conveying mechanism 3 is transported in dry powder preheating mechanism 4, the dry powder after preheating be transported to again dry powder calcining mechanism 5 in carry out height Temperature calcination processing, thus magnesium hydroxide is converted into magnesium oxide.The calcining furnace that above-mentioned dry powder is calcined in mechanism 5 uses eddy flow Dynamic calcining furnace 51.

Circulation flow dynamic furnace is the calcining furnace that can carry out calcining materials in the way of dynamic suspension, in the application of calcinated powder material In, after powder is mixed by circulation flow dynamic furnace with thermal current and make it flow in opposite directions thus formed high specific surface heat friendship Change, reach the calcining of the moment to material, thus ensure abundant heat exchange, the decomposition of material are improved the quality of product.

As it is shown in figure 1, described feedstock transportation mechanism 1 includes that belt conveyor 11 and feeding tank, described feeding tank are arranged on The lower section of described belt conveyor 11, described feeding tank includes the first feeding tank 12 and the second feeding tank 13, described Belt Conveying The position of the corresponding described first feeding tank 12 of machine 11 and described second feeding tank 13 is respectively arranged with the first scraper plate 14 and second and scrapes Plate 15, described second scraper plate 15 is fixing with described belt conveyor 11 to be connected, described first scraper plate 14 and described belt conveyor 11 be flexibly connected, described first feeding tank 12 and described second feeding tank 13 are provided with level-sensing device, described level-sensing device according to Material position in described first feeding tank 12 and described second feeding tank 13 controls rising and falling and described of described first scraper plate 14 The running status of belt conveyor 11.

Specifically, the first scraper plate 14 and corresponding first feeding tank 12 and the charging of the second feeding tank 13 respectively of the second scraper plate 15 Mouth position is installed, and each scraper plate is all welded with connecting plate, uses bolt that connecting plate is fixed on the both sides of belt conveyor 11, And make scraper plate be pressed in above belt.Second scraper plate 15 is fixed scraper plate, only serves the effect of guide, the first scraper plate 14 installs additional There is hydraulic means, can be according to the material position situation automatic lifting/lowering support in feeding tank.When in the second feeding tank 13, level-sensing device monitors second Reality material position in feeding tank 13, less than when setting material position, i.e. shows that the second feeding tank 13 needs feed, now the first scraper plate 14 In lifting status so that the material on belt is admitted in the second feeding tank 13；When the level-sensing device in the second feeding tank 13 is monitored To reality material position equal to or higher than when setting material position, i.e. show that the second feeding tank 13 need not feed, and the first feeding tank simultaneously Level-sensing device in 12 monitors reality material position less than when setting material position, i.e. surface the first feeding tank 12 needs feed, and now first Scraper plate 14 is changed in full state, then during the material on belt conveyor 11 is transported to the first feeding tank 12.When the first feeding Level-sensing device in tank 12 or the level-sensing device in the second feeding tank 13 all monitor the reality material position in feeding tank equal to or higher than setting Surely during material position, i.e. showing that the first feeding tank 12 and the second feeding tank 13 all need not feed, now belt conveyor 11 can stop Run, and any one level-sensing device monitors reality material position less than setting material position in the first feeding tank 12 or the second feeding tank 13 Time, then belt conveyor 11 can be made to continue to bring into operation, above-mentioned control operation can use PLC to be controlled.

Use this feedstock transportation mechanism 1 can realize the Automatic Conveying for feed hydrogen magnesium oxide, and can be according to material Demand automatically controls the inlet amount of material, thus improves the intelligence degree of this device, the more convenient later stage place to material Reason process.

In dry powder device, above-mentioned dry powder generating mechanism 2 also includes air feed system 22 and the first pulsed jet cloth filter 23, Described air feed system 22 includes the air filter 221 being sequentially connected, deafener 222, supplies blower fan 223 and natural gas fired incinerators 224, described natural gas fired incinerators 224 is connected with the air inlet of described flash dryer 21, described first pulsed jet cloth filter 23 are connected with the discharging opening of described flash dryer 21.

In the present embodiment, a part of air quantity of air feed system 22 is changed thermogenetic steam by calciner provides, another portion Be divided into air to provide, air by air filter 221, deafener 222 and steam Mixed design to in blower fan 223, and For being input in natural gas fired incinerators 224 under the effect of blower fan 223, the flue gas produced with natural gas fired incinerators 224 burning is mixed Close and become the steam of 350 DEG C, thus be flash dryer 21 heat supply, inside flash dryer 21, magnesium hydroxide filter cake crushes, It is rapidly dispersed and meets with the steam from flash dryer 21 air inlet, inside flash dryer 21, realizing heat exchange, Slough surface moisture through the magnesium hydroxide moment of heat exchange thus form the moisture content dry powder less than 1%, last in company with being dried The steam and the steam that produce together enter in the first pulsed jet cloth filter 23.Pulsed jet cloth filter is at sack cleaner On the basis of, the high-efficiency pulse sack cleaner of improvement, pulsed jet cloth filter uses locellus blowing-out pulse jetting deashing technology, The shortcoming overcoming general pulse cleaner unit and blowback dust remover in branch room, has deashing ability strong, and efficiency of dust collection is high, concentration of emission The feature such as low.Realizing filtering via the first pulsed jet cloth filter 23, dry powder enters the first pulsed jet cloth filter 23 after filtering In dry intermediate bunker, steam, tail gas and trace dust then enter exhaust treatment system via exhaust blower or are directly discharged into Air discharges.The magnesium hydroxide dry powder part being dried in intermediate bunker can be for sale as product, another part Then it is input to calciner and carries out calcination processing, to form magnesium oxide product.

As in figure 2 it is shown, in calciner, the magnesium hydroxide dry powder filtered out from the first pulsed jet cloth filter 23 by Discharge valve exports, and is first transported to dry powder preheating mechanism 4 via dry powder conveying mechanism 3 and carries out the pre-heat treatment.Described dry powder is pre- Heat engine structure 4 includes primary cyclone 41, secondary cyclone 42 and preheating feeder 43, described primary cyclone The exhaust outlet of 41 is connected by the first pipeline with the air inlet of described secondary cyclone 42, described secondary cyclone 42 Discharge port be connected by second pipe with the air inlet of described primary cyclone 41, described primary cyclone 41 The corresponding described preheating feeder 43 of discharge port is arranged, and one end of described preheating feeder 43 is entered with described dry powder calcining mechanism 5 Material mouth is correspondingly arranged.Steam all it is filled with in the inside of the first pipeline and second pipe.

Cyclone separator is a kind of separation equipment of the separation for gas-solid system or liquid-solid system, and its operation principle is Be introduced tangentially into by air-flow and cause rotary motion, make the solid particle with bigger centrifugal inertial force or drop get rid of outside wall and Separately.In the present embodiment, dry powder conveying mechanism 3 uses conveying worm, and dry powder is transported to one cyclonic by spiral conveying mechanism and divides From the exhaust outlet of device 41, then it is delivered directly to entering of secondary cyclone 42 via the exhaust outlet of primary cyclone 41 Air port, connecting to be full of in the first pipeline between primary cyclone 41 and secondary cyclone 42 has about 500 DEG C streams Dynamic steam, therefore magnesium hydroxide dry powder can be mixed preheating, finally entering from secondary cyclone 42 with the air-flow in pipeline Air port is input to the inside of secondary cyclone 42 and realizes the separation of the first time to material.Wherein, through the most isolated The magnesium hydroxide dry powder of more than 80% exports via the discharge valve of secondary cyclone 42, and is transported to primary cyclone The air inlet of 41, connects the second pipe between exhaust outlet and the air inlet of primary cyclone 41 of secondary cyclone 42 Being full of the steam having about 600 DEG C in road, therefore, magnesium hydroxide dry powder and air-flow are mixed preheating in second pipe again, Finally it is input to the inside realization of primary cyclone 41 second time to material by the air inlet of primary cyclone 41 Separate.This process is the warm to material.The present embodiment is calcined between mechanism 5 at primary cyclone 41 and dry powder Be provided with preheating feeder 43 so that material by primary cyclone 41 discharge valve export after through by preheating feeder 43 be delivered directly to dry powder calcining mechanism 5 in carry out calcination processing.

This warm ensure that the multistage warm-up operation for magnesium hydroxide, not only achieves for magnesium hydroxide dry powder Be fully warmed-up, and achieve and the circulation of heat in warm-up operations at different levels made full use of, and this warm entirety is adopted Be air-flow conveying mode, it is simple to the heat exchange of material, improve production load of the present utility model.Meanwhile, multistage preheating Process being smoothed out of the separating effect also optimizing powder with other compositions, more conducively later stage calcination operation.

Additionally, for the utilization rate increasing raw material, be provided with and looping back that secondary cyclone 42 exhaust outlet is connected Receiving mechanism 6, described circulation and stress mechanism 6 includes first-class heat exchanger 61, secondary heat exchanger the 62, second bag-type dust being sequentially connected Device 63 and reclaim feeder 64, the exhaust outlet phase of the charging aperture of described first-class heat exchanger 61 and described secondary cyclone 42 Even, the discharging end of described recovery feeder 64 is correspondingly arranged at the top of described preheating feeder 43.

The exhaust outlet of secondary cyclone 42 can discharge the steam material being mingled with magnesium hydroxide dry powder, is led by this steam Enter in circulation and stress mechanism 6 so that steam cools down via first-class heat exchanger 61 and secondary heat exchanger 62 respectively, the present embodiment Middle first-class heat exchanger 61 uses two gas-gas heat exchangers to realize heat exchange, blasts circulation by cooling air blower in gas-gas heat exchanger Cold airflow, secondary heat exchanger 62 uses three gas-liquid heat-exchanges to realize heat exchange, and cold flow is following of being passed through in gas-liquid heat-exchange Ring cooling water.After cooling down via two-stage, temperature of charge is down to about 250 DEG C, therefore it is transported to the second sack cleaner 63 again In.Above-mentioned material be from dry powder preheating mechanism 4 and via secondary cyclone 42 output be mingled with magnesium hydroxide dry powder Steam material, the magnesium hydroxide dry powder that it is mingled with is about the 20% of total magnesium hydroxide dry powder amount, at the second sack cleaner In 63, should can be flutterred collection with the magnesium hydroxide dry powder of air-flow output and be got off, be finally transported to preheating again via recovery feeder 64 In feeder 43, and with the material exported by primary cyclone 41 be together transported to dry powder calcining mechanism 5 in calcine Process.The present embodiment reclaims feeder 64 structure it is also preferred that use feed screw.

Above-mentioned dry powder calcining mechanism 5 also include the eddy flow dynamic calcining pair stove 52 that is all connected with circulation flow dynamic furnace 51 and Heating system 53, described heating system 53 includes combustion of natural gas room 531.

Flue gas in combustion of natural gas room 531 is 1400～1500 DEG C, and this steam is passed through circulation flow dynamic furnace 51 In provide heat for circulation flow dynamic furnace 51, in circulation flow dynamic furnace 51, the magnesium hydroxide dry powder being preheated and steam The steam met and flowed dispels rapidly, magnesium hydroxide dry powder in circulation flow dynamic furnace 51 in suspension from bottom to top State, carries out sufficient heat exchange with steam, in order to be further ensured that the calcining effect of magnesium hydroxide dry powder, dynamically will forge from eddy flow Burn the material of output in stove 51 to be again fed in eddy flow dynamically secondary stove calcine.Because circulation flow dynamic furnace 51 and eddy flow move The secondary stove 52 of state calcining is communicated by pipeline, therefore its steam also communicates.Via the output of eddy flow dynamic calcining pair stove 52 Material is product magnesium oxide.

Two calcining furnaces are used to ensure that the calcining effect of material, it is to avoid calcining is insufficient thus affects product quality Problem.

The end product magnesium oxide formed via high-temperature calcination need to cool down through product cooling body 8, the present embodiment Middle product cooling body 8 includes three-stage cyclone separator 81, and the exhaust outlet of described three-stage cyclone separator 81 passes through pipeline and institute The air inlet stating primary cyclone 41 is connected, and described heating system 53 also includes wind mixed chamber 532, is arranged on natural gas combustion Burning between room 531 and described circulation flow dynamic furnace 51, described three-stage cyclone separator 81 passes through pipeline with described wind mixed chamber 532 Connect.

The air outlet of three-stage cyclone separator 81 can discharge the steam of 600～700 DEG C, by connecting three-stage cyclone separator Pipeline between 81 air outlets and primary cyclone 41 charging aperture is so that can enter one from the steam of air outlet discharge Level cyclone separator 41 in so that play the effect of steam in supplementary primary cyclone 41.In order to save pipe in the present embodiment Road material is also easy to the setting of pipeline, and the pipeline preferably stretched out from the discharge port of secondary cyclone 42, three grades of whirlwind divide Pipeline between device 81 air outlet and primary cyclone 41 charging aperture, two pipelines are arranged in connection.In the present embodiment three Feed bin in level cyclone separator 81 is air-cooled feed bin, uses cooling air blower feed bin to provide cooling wind, to realize material Cooling.

Three-stage cyclone separator 81 is also connected by pipeline, specifically by pipe with the wind mixed chamber 532 in heating system 53 Road connects air inlet and the air outlet of the air-cooled feed bin of three-stage cyclone separator 81 of wind mixed chamber 532, so that from three grades of whirlwind The hot blast of the air-cooled feed bin air outlet output of separator 81 is input in wind mixed chamber 532, with output in combustion of natural gas room 531 Flue gas mixing is circulation flow dynamic furnace 51 heat supply jointly.

Have additional product cooling body 8 and achieve the quick cooling of the magnesium oxide for output, oxidation can be sufficiently reserved The activity of magnesium, and it is more conducive to the fast package to magnesium oxide, improve the efficiency of whole production line.

In order to improve the automaticity of the present embodiment further, magnesium hydroxide is utilized to produce oxidation as it is shown on figure 3, described The device of magnesium also include the 4th sack cleaner 71 that storage package mechanism 7, described storage package mechanism 7 include setting gradually, Magnesium oxide storage bin 72, magnesium oxide conveyer 73 and packer 74.

Material realizes the cooling of the first order in product cooling body 8, then removes via the 4th sack cleaner 71 Dirt processes, and the magnesium oxide product after process is by negative pressure transportation to magnesium oxide storage bin 72, and this magnesium oxide storage bin 72 is air-cooled Storage bin, can carry out second level cooling process to product, and material is medium to be packaged at magnesium oxide storage bin 72, by material Twice cooling processes and ensure that the chilling temperature that material is final.Afterwards, after magnesium oxide conveyer 73 and packer 74 can be to coolings Material realize conveying and automatic packing processes.

What this preferred embodiment provided utilizes the device of magnesium hydroxide production activated magnesia can realize for each process rank Section the making full use of of heat, this plant automation degree is high simultaneously, rate of load condensate is high, the activity of the product magnesium oxide produced is high, Yield is high, quality better.

It should be noted that this utility model is illustrated rather than by above-described embodiment, this utility model is limited Make, and those skilled in the art can design alternative embodiment without departing from the scope of the appended claims.? In claim, any reference marks that should not will be located between bracket is configured to limitations on claims.Word " comprises " Do not exclude the presence of the element or step not arranged in the claims.

Claims (8)

1. one kind utilizes the device that magnesium hydroxide produces magnesium oxide, it is characterised in that include dry powder device and calciner, described Dry powder device includes feedstock transportation mechanism (1) and dry powder generating mechanism (2), described calciner include dry powder conveying mechanism (3), Dry powder preheating mechanism (4), dry powder calcining mechanism (5) and product cooling body (8), described feedstock transportation mechanism (1), dry powder generate Mechanism (2), dry powder conveying mechanism (3), dry powder preheating mechanism (4), dry powder calcining mechanism (5) and product cooling body (8) are successively It is connected,

Described dry powder generating mechanism (2) includes that flash dryer (21), described dry powder calcining mechanism (5) include eddy flow dynamic calcining Stove (51).

The device utilizing magnesium hydroxide to produce magnesium oxide the most according to claim 1, it is characterised in that described feedstock transportation Mechanism (1) includes belt conveyor (11) and feeding tank, and described feeding tank is arranged on the lower section of described belt conveyor (11),

Described feeding tank includes the first feeding tank (12) and the second feeding tank (13), described belt conveyor (11) corresponding described the The position of one feeding tank (12) and described second feeding tank (13) is respectively arranged with the first scraper plate (14) and the second scraper plate (15), institute State that the second scraper plate (15) and described belt conveyor (11) are fixing to be connected, described first scraper plate (14) and described belt conveyor (11) it is flexibly connected, described first feeding tank (12) and described second feeding tank (13) are provided with level-sensing device, described material position Instrument controls described first scraper plate (14) according to the material position in described first feeding tank (12) and described second feeding tank (13) Rise and fall and the running status of described belt conveyor (11).

The device utilizing magnesium hydroxide to produce magnesium oxide the most according to claim 1, it is characterised in that described dry powder generates Mechanism (2) also includes air feed system (22) and the first pulsed jet cloth filter (23), and described air feed system (22) includes phase successively The air filter (221) of company, deafener (222), confession blower fan (223) and natural gas fired incinerators (224), described combustion of natural gas Stove (224) is connected with the air inlet of described flash dryer (21), described first pulsed jet cloth filter (23) and described flash distillation The discharging opening of drying machine (21) is connected.

The device utilizing magnesium hydroxide to produce magnesium oxide the most according to claim 1, it is characterised in that described dry powder preheats Mechanism (4) includes primary cyclone (41), secondary cyclone (42) and preheating feeder (43), described one cyclonic The exhaust outlet of separator (41) is connected by the first pipeline with the air inlet of described secondary cyclone (42), described two grades The discharge port of cyclone separator (42) is connected by second pipe with the air inlet of described primary cyclone (41), and described one The corresponding described preheating feeder (43) of the discharge port of level cyclone separator (41) is arranged,

The charging aperture of corresponding described dry powder calcining mechanism (5) in one end of described preheating feeder (43) is arranged.

The device utilizing magnesium hydroxide to produce magnesium oxide the most according to claim 4, it is characterised in that described calciner Also include circulation and stress mechanism (6), described circulation and stress mechanism (6) include the first-class heat exchanger (61) being sequentially connected, two grades change Hot device (62), the second sack cleaner (63) and recovery feeder (64), the charging aperture of described first-class heat exchanger (61) is with described The exhaust outlet of secondary cyclone (42) is connected, and the discharging end of described recovery feeder (64) is correspondingly arranged at described preheating and send The top of material machine (43).

The device utilizing magnesium hydroxide to produce magnesium oxide the most according to claim 4, it is characterised in that described dry powder is calcined Mechanism (5) also includes eddy flow dynamic calcining pair stove (52) and the heating system being all connected with described circulation flow dynamic furnace (51) (53), described heating system (53) includes combustion of natural gas room (531).

The device utilizing magnesium hydroxide to produce magnesium oxide the most according to claim 6, it is characterised in that described product cools down Mechanism (8) includes three-stage cyclone separator (81), and the exhaust outlet of described three-stage cyclone separator (81) passes through pipeline and described The air inlet of level cyclone separator (41) is connected,

Described heating system (53) also includes wind mixed chamber (532), is arranged on combustion of natural gas room (531) and described eddy flow is dynamically forged Burning between stove (51), described three-stage cyclone separator (81) is connected by pipeline with described wind mixed chamber (532).

The device utilizing magnesium hydroxide to produce magnesium oxide the most according to claim 1, it is characterised in that described utilize hydrogen-oxygen Change that magnesium produces that the device of magnesium oxide also includes that storage package mechanism (7), described storage package mechanism (7) include setting gradually the Four sack cleaners (71), magnesium oxide storage bin (72), magnesium oxide conveyer (73) and packer (74).