CN107902932A

CN107902932A - A kind of ardealite calciner plant

Info

Publication number: CN107902932A
Application number: CN201711167536.2A
Authority: CN
Inventors: 赵嘉珩; 赵建纲
Original assignee: ZHENGZHOU SUNDY BUILDING TECHNOLOGY Co Ltd
Current assignee: ZHENGZHOU SUNDY BUILDING TECHNOLOGY Co Ltd
Priority date: 2017-11-21
Filing date: 2017-11-21
Publication date: 2018-04-13

Abstract

A kind of ardealite calciner plant, belongs to ardealite manufacture field, including preheating roller, calcines roller, reduce roller；The preheating roller is installed on the front end of calcining roller；The calcining roller is installed on the rear end of preheating roller；The calcining roller has two, and discharging portion split-phase of its feeding part respectively with two preheating rollers is connected, its output section is connected with reducing the feed arrangement of roller respectively；The reduction roller is installed on the rear end for calcining roller, and the reduction roller has one, and drawing mechanism of its feed arrangement respectively with two calcining rollers is connected, and having to reduce investment outlay, and improves work efficiency, convenient the characteristics of repairing and safeguarding, save the energy.

Description

A kind of ardealite calciner plant

Technical field

It is more particularly to a kind of to be used to ardealite calcining being converted into building gypsum the invention belongs to ardealite manufacture field Calciner plant.

Background technology

Ardealite is that phosphorous chemical industry enterprise pollutes to neutralize the acid solution used in process of production discharge, so as to produce Discarded object, ardealite itself is pollution-free, and still, by long-term accumulation, the quantum of output of ardealite is much higher than what can be applied Amount, therefore the bulk deposition of ardealite is resulted in, in a disguised form cause environmental pollution, occupied ground；Since ardealite is by phosphorous chemical industry Production process in produce, therefore, ardealite has the characteristics that compared with ore gypsum；First, ardealite is underway Be preceding gypsum that reaction generation is carried out by calcium hydroxide and sulfate radical, therefore the particle of ardealite is fine and smooth, plus gypsum in itself Feature, ardealite have stronger viscosity；Second, ardealite is produced by solution reaction, therefore the ardealite discharged contains There are substantial amounts of Free water, that is, moisture content height；3rd, ardealite is the byproduct in phosphorous chemical industry production process, therefore, phosphorus Containing the various ions in phosphorous chemical industry production process in gypsum, some of which is harmful ion；So major part of ardealite Component is dihydrate gypsum, and the building gypsum that building trade uses is mostly semi-hydrated gypsum, therefore ardealite can not be building Industry directly uses；In order to reduce the accumulation of ardealite, ardealite is converted into building gypsum, people have invented ardealite and passed through The method for converting it into building gypsum is calcined, common method for calcinating, is to carry out ardealite to be calcined to certain temperature, is removed After Free water in ardealite, it is further continued for heating, is translated into semi-hydrated gypsum, some residual gypsum continues to heat, by its turn Anhydrous gypsum is turned to, the mixture of anhydrous gypsum and semi-hydrated gypsum is subjected to atomization reduction, being largely converted into be The semi-hydrated gypsum that architectural engineering uses；Drum-type calcining furnace is used mostly at present, in calcination process, to be removed in ardealite Free water is, it is necessary to spend the substantial amounts of energy, and therefore, the high-temperature tail gas that people again discharge calcined gypsum calcining furnace, is rolled in calcining The front end of cylinder increases a preheating roller, and high-temperature tail gas is passed through in preheating roller, accomplishes to save the energy, still, due to high temperature Contain substantial amounts of steam in tail gas, it is aqueous in roller although the temperature in preheating roller improves after being passed through in preheating roller Rate accordingly improves, and is so unfavorable for removing the Free water in ardealite；In addition, scale and industry with ardealite calcining Change, the storage of building gypsum is all closely bound up after the configuration of calciner and the ardealite storage of phosphorous chemical industry enterprise and calcining, Low production efficiency, otherwise it is low to invest big efficiency, otherwise it is impossible to meet demand.

The content of the invention

For the above problem present in existing ardealite calcination process, the present invention proposes a kind of ardealite calcining dress Put, it is characterised in that：Including preheating roller, roller is calcined, reduces roller；Before the preheating roller is installed on calcining roller End, its feed inlet are docked with the drawing mechanism of ardealite pretreatment system, its discharge port is docked with calcining the feed inlet of roller；Institute The preheating roller stated has two, is separately mounted to the front end of two calcining rollers, its output section passes through conveying device and calcining The feed arrangement docking of roller；The connection of the preheating roller and calcining roller is two independent connections, non-interference, shape Into two runtimes；The calcining roller is installed on the rear end of preheating roller, the discharging of its feed arrangement and preheating roller Device is connected, its drawing mechanism is mutually connected with reducing the feed arrangement of roller；The calcining roller has two, its feeding part The discharging portion split-phase with two preheating rollers is connected respectively, its output section is connected with reducing the feed arrangement of roller respectively；Institute The reduction roller stated is installed on the rear end of calcining roller, and the reduction roller has one, its feed arrangement is forged with two respectively Burn the drawing mechanism connection of roller.

Further, the maximum gauge of the preheating roller is 3.3 meters.

The maximum gauge of the calcining roller is 3.3 meters.

The maximum gauge of the reduction roller is 3.3 meters.

Further, the preheating roller further includes hot air duct, and the hot air duct is installed on preheating roller Centre, with preheat roller pivot overlaps, through preheating roller length, and with preheating roller inner cavity every From；The hot air duct is made of the preferable material of heat conductivility；The hot air duct import and the outlet air of calcining roller Mouth connection, its outlet is connected with the air inlet of ardealite pretreatment system.

Beneficial effect

The beneficial effects of the present invention are can reduce investment outlay on the premise of production capacity is ensured, form two independent calcining lifes Producing line, rational allocation production capacity, the maintaining and maintenance of equipment are realized in the case where not stopping production, using waste heat on the premise of not Moisture content in increase preheating roller, while transport can be realized under the maximum allowable size of highway transportation, reduce manufacture And cost of transportation.

Brief description of the drawings

Fig. 1 is the structure diagram of the present invention

1. preheat roller A, 2. conveying device A, 3. calcining roller A, 4. conveying device B, 5. reduction rollers, 6. conveying device C, 7. Calcine roller B, 8. conveying device D, 9. preheating roller B.

Fig. 2 is the structure diagram for preheating roller

11. preheat drum housing, 12. hot air ducts.

Embodiment

In order to further illustrate technical scheme, in conjunction with the embodiment of the brief description of the drawings present invention；Such as Fig. 1, Fig. 2, select in this example 3.3 meters of diameter to preheat roller B9 as preheating roller A1, calcine roller A3, calcine roller B7, also The outside diameter of former roller 5, because of this, being provided according to existing highway transport management, the roller of such diameter is plus peripheral biography The annexes such as moving gear, substantially meet the full-size of highway transportation, if increase diameter, it is necessary to carry out carriage of special cargo, increase Cost of transportation and transport difficult；The calcining of ardealite at the same time, the purpose is to remove the Free water contained in ardealite and the crystallization water, At a certain temperature, the diameter increase of roller can increase calcination efficiency, and rise temperature can make ardealite denaturation so temperature It is certain, this makes it possible to the maximum productivity for ensureing a roller；The general conveying device of the industry is selected in this example Include bucket elevator, skin as conveying device A2, conveying device B4, conveying device C6, conveying device D8, these conveying devices Band conveyer, screw conveyor or their combination；The discharge port of roller A1 will be preheated, rolled by conveying device A2 and calcining The feed inlet connection of cylinder A3, the discharge port for calcining roller A3 is connected by conveying device B4 with reducing the feed inlet of roller 5, shape Into a calcining production line；The discharge port for preheating roller B9 is connected by conveying device D8 with calcining the feed inlet of roller B7, The discharge port for calcining roller B7 is connected with reducing the feed inlet of roller 5, Article 2 calcining production line is formed, due to reducing roller 5 need not evaporate Free water and the crystallization water in ardealite, therefore the production capacity for reducing roller 5 is high, that is to say, that one same straight The reduction roller 5 in footpath disclosure satisfy that the production capacity needs of multiple calcining rollers；But if increasing the calcining production line of more than two, Need to increase plant area, increase investment again so in terms of workshop layout；The general steel pipe conduct of the industry is selected in this example Hot air duct 12, is installed on the centre of preheating drum shell 11 by hot air duct 12, does not influence so to preheat the rotation of roller Turn, while the hot wind in hot air duct 12 can be utilized to heat hot air duct 12 again, so that the ardealite in preheating roller is heated, Accelerate the evaporation of the Free water of ardealite, ease off the pressure to calcine the calcination process of roller, so as to improve the production of calcining roller Efficiency；Simultaneously as hot wind is extracted out out of calcining roller, containing a large amount of superheated vapors, if with preheating the phosphorus stone in roller Cream directly contacts, then can produce water afterwards to the cold, increases the moisture content of ardealite, and the water content that increase evaporation is heated with auxiliary is supported Disappear, just reduce the water separation capability of preheating roller；The import of hot air duct 12 is connected by the suction opening of pipeline and calcining roller Connect, the air outlet of hot air duct 12 is connected with the air inlet of ardealite pretreatment system, can so make full use of preheating, save The about energy, this completes the implementation of the present invention.

In application, the ardealite by ardealite pretreatment system preliminary hydro-extraction, this book is sent in preheating roller, through overheat The heating of wind pipeline 12, the ardealite preheated in roller are heated, so as to accelerate the removal of ardealite Free water, are filled by exhausting Put and draw it out, be sent in ardealite pretreatment system and used as heating wind；Pass through conveying device by the ardealite of preheating Be transported to calcining roller in, there is flame furnace in the one end for calcining roller, by calcine roller in ardealite further heat, reach by Dihydrate gypsum is provided with discharge port, semi-hydrated gypsum is output to conveying device, and then defeated to the region of semi-hydrated gypsum conversion temperature The feed arrangement of reduction roller 5 is sent to, remaining ardealite moves forward, and reaches anhydrous gypsum conversion temperature（230 ° of left sides It is right）Region, sets discharge port, and the anhydrous gypsum changed into is sent calcining roller, passes through conveying device together with semi-hydrated gypsum In the reduction roller 5 sent, reduce in roller 5 and be provided with vapor mixing arrangement, anhydrous gypsum is reduced to semi-hydrated gypsum, is gone back Former roller 5 is sent out, and to product handling system system, this completes a working cycles；The building gypsum resting period produced has It is required that according to user demand, if demand is big, just two parallel calcining production lines are all turned on, if demand is little, just One of them is opened, Liang Ge factories are built in thus unnecessary investment；On the other hand, when in production process, calcining roller is Work, be easily damaged at high temperature, so when one, which is calcined drum of damage, needs repairing, the calcining production line on its one side is stopped Only, carry out maintenance, and one of another side calcining production line still is able to work normally, and is unlikely to cause plant downtime；And reduce Roller 5 is less likely to be damaged, because its operating condition is stablized relatively, the present invention has selected a reduction roller.

Claims

A kind of 1. ardealite calciner plant, it is characterised in that：Including preheating roller, roller is calcined, reduces roller；The preheating Roller is installed on the front end of calcining roller, its feed inlet docks with the drawing mechanism of ardealite pretreatment system, its discharge port and Calcine the feed inlet docking of roller；The preheating roller has two, is separately mounted to the front end of two calcining rollers, it discharges Docked by conveying device with calcining the feed arrangement of roller part；The connection of the preheating roller and calcining roller is two Independent connection, it is non-interference, form two runtimes；Described calcining roller is installed on the rear end of preheating roller, its into Material device is connected with preheating the drawing mechanism of roller, its drawing mechanism is mutually connected with reducing the feed arrangement of roller；Described forges Burning roller has two, and discharging portion split-phase of its feeding part respectively with two preheating rollers is connected, its output section is respectively with going back The feed arrangement connection of former roller；The reduction roller is installed on the rear end of calcining roller, and the reduction roller has one, Drawing mechanism of its feed arrangement respectively with two calcining rollers is connected.
A kind of 2. ardealite calciner plant according to claim 1, it is characterised in that：The maximum of the preheating roller is straight Footpath is 3.3 meters.
A kind of 3. ardealite calciner plant according to claim 1, it is characterised in that：The maximum of the calcining roller is straight Footpath is 3.3 meters.
A kind of 4. ardealite calciner plant according to claim 1, it is characterised in that：The maximum of the reduction roller is straight Footpath is 3.3 meters.
A kind of 5. ardealite calciner plant according to claim 1, it is characterised in that：The preheating roller further includes heat Wind pipeline, the hot air duct are installed on the centre of preheating roller, are overlapped with the pivot for preheating roller, through pre- The length of hot roller, and the inner cavity with preheating roller isolates；The hot air duct is made of the preferable material of heat conductivility；Institute The hot air duct import stated is connected with calcining the air outlet of roller, its outlet is connected with the air inlet of ardealite pretreatment system.