CN110372237A - Industry by-product gypsum product method for innocent treatment and system - Google Patents
Industry by-product gypsum product method for innocent treatment and system Download PDFInfo
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- CN110372237A CN110372237A CN201910807329.1A CN201910807329A CN110372237A CN 110372237 A CN110372237 A CN 110372237A CN 201910807329 A CN201910807329 A CN 201910807329A CN 110372237 A CN110372237 A CN 110372237A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/02—Methods and apparatus for dehydrating gypsum
- C04B11/028—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained
- C04B11/036—Devices therefor characterised by the type of calcining devices used therefor or by the type of hemihydrate obtained for the dry process, e.g. dehydrating in a fluidised bed or in a rotary kiln, i.e. to obtain beta-hemihydrate
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of industry by-product gypsum product method for innocent treatment, by powdered industry by-product gypsum raw material, through high-temperature heating drying and calcining processing, sulfate hemihydrate calcium powder is obtained, and becomes industry by-product gypsum product raw material, it is characterized in that, first realize the physical separation of harmful substance, i.e. heating high temperature and pressure is dry decomposes surface water and harmful substance, then calcines a crystallization water of removal again, exhaust gas and harmful substance are then carried out chemical treatment recycling；Semi-hydrated gypsum powder is obtained, as industry by-product gypsum product raw material.The invention also discloses a kind of industry by-product gypsum processing systems for realizing the above method；Harmless treatment preferably can be carried out to industry by-product gypsum, make it to improve plastering quality.
Description
Technical field
The invention belongs to industrial gypsums to produce reutilization technology field, and in particular to industry by-product gypsum product raw material
Innoxious process for treating.
Background technique
Gypsum, main component are calcium sulfate, including the natural gypsum and industrial gypsum.Wherein industrial gypsum also known as industry are secondary
Gypsum is produced, is the by-product of some industrial processes, mainly includes ardealite and two kinds of desulfurized gypsum, wherein ardealite Zhan work
More than half of industry by-product gypsum.China's industry by-product gypsum accumulates volume of cargo in storage more than 300,000,000 tons at present, and wherein ardealite is up to 2
Hundred million tons or more.Industry by-product gypsum is largely stored up, not only land occupation, but also waste of resource, the acidity contained and other harmful substances
It is easy to pollute surrounding enviroment, has become an important factor for restricting the sustainable development of China's phosphatic fertilizer company.We are at present
The efficiency of industry by-product gypsum development and reuse is lower, and comprehensive utilization ratio is only 38% or so；Therefore develop industry by-product gypsum
Secondary use technology is still the project that present value must be studied.
Industry by-product gypsum product refers to using industry by-product gypsum as main material, gypsum block obtained, gypsum brick,
The products such as the big wallboard of plasterboard, gypsum, brushing gypsum and gypsum paper.Due to enabling to industrial by-product waste to obtain again
It utilizes, therefore industry by-product gypsum product has lower production cost, preferable economic value and very big environment protection significance, tool
There is relatively broad exploitation prospect.
But existing various plasterings, including various building materials of gypsum, in actual use, generally existing scum,
The problems such as becoming mildewed, be green tinged low with intensity.The problem has severely impacted the use quality and service life of plastering, at
For the industry general character problem for restricting plastering industry development at present.Applicants have found that plastering generates scum, length
Hair, it is green tinged, intensity is low the main reason for be that a large amount of harmful substances contained in industry by-product gypsum raw material are not removed and led
It causes.
These harmful substances mainly include several major class such as sulphur, phosphorus, fluorine, salt, alkali, acid.Wherein sulphur refers mainly to sulfur dioxide, and one
As in raw material with the content of 1.1-3.12%, be the reason of influencing gypsum setting strength.Phosphorus is primarily referred to as water-soluble phosphorus, and content exists
1-2%.Fluorine refers to fluorine ion, and content is in 100MG/L or so.Salt and alkali refer mainly to phosphorus (sulphur) hydrochlorate and alkali oxide, and content is lower,
But still it will affect plastering quality.Acid refers mainly to phosphoric acid, and existing equally will affect plastering quality.Applicant's research
It was found that above-mentioned harmful substance just will lead to gypsum product after a long time in use if failing to remove, harmful substance is precipitated
Surface, the phenomenon that forming scum and become mildewed.The use quality of strong influence plastering and service life.And the prior art
In harmful components in gypsum are handled, be usually surface-treated using chemical agent, this mode can only Zhi Qibiao without
Energy Zhi Qiben, treatment effect is poor and pollution is larger.In addition, external remove gypsum objectionable impurities in the presence of by the way of washing
Most of water-soluble harmful substance is dissolved in water and removed by technology, but the water ratio that this kind of technical approach expends takes around
99.5% or so, therefore need to expend a large amount of water resource, consuming water resource is serious and the feature of environmental protection is poor.
Therefore how to realize being effectively treated for gypsum raw material harmful substance, keep its innoxious, it is total to become those skilled in the art
With the problem target of research.
Some patented technologies that inventor once applied in the past, such as CN201110408620- one kind is especially suitable for de-
The drying and calcining machine of sulphur gypsum, a kind of drying and calcining machine especially suitable for ardealite of CN201110408621- and
A kind of patents such as gypsum drying and calcining machine of CN201310579902-.Some how to carry out to industry by-product gypsum respectively disclosed
Drying and calcining is handled to obtain the production equipment of plastering raw material (sulfate hemihydrate calcium powder).In conjunction with the complete of inventor's invention
The mode of dry method compacting, can get the higher plastering of intensity.But in above-mentioned patent, there is no open how to plastering
The method and principle that harmful components are removed in raw material.
Meanwhile the drying and calcining machine in above-mentioned patent, it can be improved drying and calcining treatment effeciency, but still relatively exist
The defects for the treatment of effeciency is lower, and treatment effect is difficult to control accurately.
In prior art basis, a kind of nocuousness that can preferably remove in industry by-product gypsum how can be provided
Substance can be improved finished industrial by-product gypsum quality of item, and treatment effeciency is high, and treatment process facilitates the industrial by-product stone of control
Cream product method for innocent treatment and system, becoming those skilled in the art has technical problem to be solved.
Industry by-product gypsum is usually that rock phosphate in powder extracts the resultant product that P elements prepare phosphate fertilizer, and applicant is to industrial by-product
Harmful components have carried out detailed analysis in gypsum, analyze by micro- sem observation and harmful components Crack cause, find all kinds of
The state at the surface for being mainly attached to calcium sulfate in state of harmful components.It has been investigated that sulphur in gypsum raw material,
Phosphorus, fluorine, salt, alkali, acid, which are into, to be in gypsum surface, and is attached in the moisture on surface, as long as therefore applicant's consideration will
The attached water on surface is first separated with crystal gypsum ontology, as soon as then carrying out the crystallization water that a molecule is removed in calcining again, can be obtained
Semi-hydrated gypsum.Therefore have developed the scheme of the application.
Summary of the invention
Situation in view of the above-mentioned defects in the prior art, the technical problems to be solved by the present invention are: how to provide a kind of energy
Enough more preferable, in more inexpensive removal industry by-product gypsum harmful substance, and can be improved industry by-product gypsum quality of item,
Treatment effeciency is high, and treatment process is conducive to the industry by-product gypsum product method for innocent treatment and system of control.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions:
A kind of industry by-product gypsum product method for innocent treatment, by powdered industry by-product gypsum raw material, through being heated at high temperature
Calcination processing obtains sulfate hemihydrate calcium powder, and becomes industry by-product gypsum product raw material, it is characterized in that, heat drying is forged
It contacts industry by-product gypsum powder with the ascending air of high temperature and pressure in the sky, first realizes the harmful substance and table on surface
Face moisture carries out physical separation, attached water and harmful substance by taking away calcium sulfate surface with the ascending air of high temperature and pressure；So
The land plaster of surface with harmful substance will have been separated afterwards, carries out crystallization water calcining again, its chemical breakdown is made to discard a crystallization water,
Semi-hydrated gypsum powder is obtained as industry by-product gypsum product environmental protection material.
In this way, using industry by-product gypsum as material, industry by-product gypsum effectively can be carried out in the above method
Recycle, can be good at solve industry by-product gypsum largely store up, land occupation, waste of resource, the acidity contained and its
The problem of his harmful substance pollutes surrounding enviroment.
Meanwhile the above method, using industry by-product gypsum through high-temperature heating drying and calcining removal harmful components impurity and knot
During brilliant water obtains half water and wastewater industry by-product gypsum, specifically heat drying calcination process is, by the rising gas of high temperature
Industry by-product gypsum powder is blown to suspended dispersion by stream, then first under the effect of high temperature ascending air, in 800 DEG C of (700-900
DEG C) the calcium sulfate surface attached water taken away in suspended dispersion is synchronized by high-temperature high-pressure air flow in the environment temperature of left and right, and
The harmful substance ingredient for taking away the attachment of calcium sulfate surface is synchronized by the removal of attached water, is realized physical separation, is obtained product two
H 2 O calcium sulphate；Then the portion discarded in calcium sulfate further is realized in 170 DEG C of (150-200 DEG C) left and right environment temperature lower calcinations
The crystallization water obtains the industry by-product gypsum of half-H 2 O calcium sulphate.
In this way, applicant consider targetedly in industry by-product gypsum powder calcium sulfate attached water and calcium sulfate surface
When the harmful substance ingredient of attachment is handled, industry by-product gypsum powder is blown to suspension by the ascending air of high temperature
State, enable high temperature gas flow to a greater extent with industry by-product gypsum powder contact, and high-temperature high-pressure air flow effect under it is complete
Pairs of calcium sulfate adheres to water evaporation, and the harmful substance ingredient separation for adhering to calcium sulfate surface while air-flow rises is simultaneously
It takes away, realizes the mode for directly relying on physical separation, can be better removed the harmful substance in industry by-product gypsum powder.It
It is targetedly realized again using the means of calcining afterwards and decomposes the crystal of calcium sulfate water for taking away a molecule, obtain semi-hydrated gypsum.Therefore
This method can remove the harmful substance in industry by-product gypsum to greatest extent, using half water and wastewater industry by-product stone obtained above
The plastering that cream is prepared can have better quality, and can be good at solution product scum and ask with what is become mildewed
Topic.
As optimization, the drying stage of physical separation attached water and harmful substance, drying temperature range is 700-900 DEG C,
Dry environment high temperature gas flow enters the wind pressure and is greater than 9,000 Pa, and the calcination stage of partially crystallizable water, calcination temperature model are taken away in Chemical Decomposition
Enclosing is 150-200 DEG C, and it is 400-700Pa that calcination environment air-flow, which enters the wind pressure,.
In this way, in the drying process, the effect of high temperature and pressure can be relied on so that the attached water of gypsum surface in the sky and
The flash evapn of ascending air contact, and then the attached water and harmful substance of gypsum surface are rapidly taken away during processing,
It cannot be properly arrived at the effect if temperature and pressure are too low, can be difficult to control if excessively high, cause to be easy directly to lose
It decrystallizes and water and further generates oxidation reaction.After drying, calcined using the gentle pressure of the temperature of lower range, it can
The steadily spilling of the control section crystallization water, obtains half-H 2 O calcium sulphate.Further, drying temperature is 800 DEG C, and dry environment is high
It is 10,000 Pa that warm air, which enters the wind pressure, and calcination temperature is 170 DEG C, and it is 500Pa that calcination environment air-flow, which enters the wind pressure,.The parameter can be with
So that said effect reaches best.
Further, after physical separation, the exhaust gas formed after attached water and harmful substance is taken away to ascending air and carries out nothing
Evilization processing；When harmless treatment, exhaust gas is first imported into neutralisation treatment tank, by neutralisation treatment tank by harmful substance in tail gas,
Water-soluble aquation is first passed through, then desulfurization neutralization is carried out by Dual alkali, the water after neutralization becomes neutral water recycling；Then in
Exhaust gas with after is condensed again, returns to gaseous vapor and remaining gas impurity in the water of liquid, no longer generates discharge
Tail gas realizes whole circular treatment.The circular treatment of exhaust gas, whole zero-emission is achieved, no pollution greatly improves
The feature of environmental protection and safety of equipment.
The invention also discloses a kind of industry by-product gypsum processing systems for the above method, it is characterized in that, including
Drying equipment, calciner and bin device, drying equipment are equipped with dry discharge port and for for industry by-product gypsum powder
The dry feed mouth of merging；And it is set between the dry discharge port and calciner feed end by horizontally disposed screw feeding
Standby linking；The linking of calciner discharge end is provided with chain row's conveyer, and on chain row's conveyer discharge end and bin device
Pass through the elevator linking of setting between the material posting port at end.
In this way, above-mentioned semi-hydrated gypsum preparation system is at work, industry by-product gypsum powder raw material is from drying equipment
Dry feed mouth enter, industry by-product gypsum powder after drying equipment is dried is from the dry discharging on drying equipment
Mouth outflow is delivered to calciner using material transfer equipment and enters from the calcining feed inlet on calciner, by forging
The calcined industry by-product gypsum powder of equipment is burnt from the calcining discharge port outflow on calciner, then the elevator by setting
By drying and calcining, treated that industry by-product gypsum powder is delivered to feed bin is aged.Above system prepares half water and wastewater industry by-product
Gypsum has simple process, and is dried respectively in half water and wastewater industry by-product gypsum preparation process and calcination processing, and two
Processing step is mutually indepedent, when so that each leisure of the two being removed harmful substance and the crystallization water, will not generate mutual do
It disturbs.Material lifting to bin device is subjected to ripening after calcining, stablizes its states of matter, half water that can be improved
The quality of industry by-product gypsum, and then improve the quality for the plastering being prepared.
As optimization, the drying equipment includes horizontally disposed shell, is equipped in shell and is integrally inclined to set
Enclosure interior is separated into the hothouse of top and the inlet air plenum of lower section by stock guide, stock guide, and shell upper end is equipped with vertical row
Air port is connected with the hothouse to be connected；Position corresponding with stock guide top and bottom is each provided with opening on hothouse side wall
And corresponding formation dry feed mouth and dry discharge port；And several exhaust vents are equipped on stock guide, in inlet air plenum side wall
On face described in be equipped with dry air inlet below dry feed mouth, further include dry gas stream supply equipment, and dry gas stream supplies
The outlet air end of equipment is answered to be connected with dry air inlet.
In this way, above-mentioned drying equipment is at work, industry by-product gypsum powder is from the dry feed mouth on drying equipment
It is fallen on stock guide after, while dry gas stream supply equipment starts to work and is blown into high temperature drying wind, high temperature to inlet air plenum
Dry wind enters in hothouse after the exhaust vent on stock guide and is formed the ascending air of high temperature, the rising of high temperature and pressure
Industry by-product gypsum powder on stock guide can be blown to suspended state by air-flow, then first under high-temperature high-pressure air flow effect,
Fall attached water by high temperature gas flow flash evapn in 600-900 DEG C of environment temperature, synchronizes and take away calcium sulfate attached water and calcium sulfate
The harmful substance ingredient of surface attachment, realizes physical separation；Wherein be pulled away calcium sulfate attached water and calcium sulfate surface attachment
Harmful substance ingredient can be expelled to device external from the exhaust outlet of drying equipment under the drive of ascending air, can be in addition single
Purified treatment solely is carried out for emission again, can be avoided pollution, improves entire processing environment protecting.Therefore have processing quickly high
The characteristics of effect, discharge environmentally-friendly sanitary, meanwhile, in the device structure, it can be controlled by structure to stock guide and gradient
System, to realize required drying and calcining effect.
Therefore above-mentioned device structure is simple, can realize the harmful substance in removal industry by-product gypsum, processing well
Industry by-product gypsum material quality afterwards is good, and performance is more preferable.Further, the dry gas stream supply equipment is combustion of natural gas
Device.In this way, structure is simpler, and the controlled range of the temperature for the hot wind being capable of providing is bigger, more using mature existing product
Add convenient to use.
As optimization, the stock guide is integrally in the three of bending on the spacing direction of dry feed mouth and dry discharge port
Segmentation design, and stock guide includes stock guide feed zone, stock guide interlude and stock guide discharging section, and stock guide interlude
Tilt angle be greater than stock guide discharging section and stock guide feed zone tilt angle.
In this way, by stock guide whole design at the three stage structure of bending, and including stock guide feed zone, stock guide among
Section and stock guide discharging section, three sections of stock guide structures corresponding dry preparation stage, drying stage and discharging preparation stage.
Industry by-product gypsum powder first passes through stock guide feed zone, then successively after stock guide interlude and stock guide discharging section from dry
Drying discharge port outflow in dry equipment.In the process, industry by-product gypsum powder is fallen on stock guide feed zone and by gas
Flow to front upper place blow it is forward.Stock guide feed zone paves material for dispersing, and dry place is better achieved for interlude below
Reason is ready.The tilt angle of stock guide feed zone is less than stock guide interlude, so that industry by-product gypsum powder is in guide
Forward speed on plate feed zone is less than the speed on stock guide interlude, under the action of the ascending air of high temperature, so that
Industry by-product gypsum powder can preferably be dispelled and it is more uniform be laid on stock guide feed zone upper surface, be subsequent work
Industry by-product gypsum powder, which enters after stock guide interlude, preferably can be blown to suspended state by the ascending air of high temperature and carry out standard
It is standby.Then stock guide interlude is main acting section, and material completes main drying process in this section, is acted in high temperature gas flow
Under, the harmful substance ingredient for taking away calcium sulfate attached water and the attachment of calcium sulfate surface is synchronized, realizes physical separation；Subsequent processing again
Material is after stock guide discharging section afterwards, and the speed of advance reduces, and material gradually precipitates, is conducive to from the drying on drying equipment
Discharge port discharge.
Better choice is that the forward upward inclination that is set as of exhaust vent in the longitudinal direction is set on stock guide feed zone
It sets.In this way first is that avoid material from having just enter into stock guide feed zone falls to lower section inlet air plenum out of exhaust vent.Second is that making it
Has the effect for driving material to be blown to suspension upwards forward and tentatively, preferably to be ready into interlude.Further,
Stock guide feed zone feed end medium position and the linking of dry feed mouth, stock guide feed zone exhaust vent setting in the lateral direction
It is set to, respectively top is obliquely installed to outside two sides at middle part.It is more conducive to being uniformly dispersed for material in this way.Further, stock guide into
Expect that section upper surface is inclination or the arcuate structure that middle height is higher than height on both sides, is equally more favorable for material and disperses to two sides
Uniformly, guarantee material is evenly into stock guide interlude, and then guarantees that stock guide interlude finally imitates the processing of material
Fruit.Still further, the exhaust vent aperture of stock guide feed zone and dry feed mouth joining place is greater than remaining position exhaust vent hole
Diameter, and upper surface covering is provided with ventilative cloth.This is because dry feed mouth inlet amount is bigger, therefore after increasing exhaust vent aperture
Material can be preferably blown afloat, while after avoiding a large amount of materials from falling into accumulation, material has little time to be blown afloat i.e. downward from exhaust vent
It falls into.
As optimization, the exhaust vent on stock guide interlude is integrally obliquely installed rearwardly and upwardly.This way it is possible to avoid material
Lower section directly is fallen to from exhaust vent, while importantly, the direction can preferably slide downwards with material by self weight
Direction it is opposite, preferably material inversely can be brushed to suspended state simultaneously upwards and make material in this state can be with
It is slided by self weight forward downward, so that material is completed heat exchange with thermal updrafts in this process, and be raised high temperature hot gas
Stream directly takes away attached water and harmful substance ingredient.
As optimization, the exhaust vent that stock guide discharging section is equipped with is in horizontally forward or front lower place direction is arranged.
In this way, can preferably drive material to move ahead from the air-flow that exhaust vent on stock guide discharging section comes out realizes discharging,
Can avoid completely simultaneously stock guide discharging section due to after being reduced in inlet air plenum terminal position wind-force material fall into from exhaust vent.
Further, between stock guide feed zone described in inlet air plenum and guide interlude and stock guide interlude with
It is each provided with vertical partition between stock guide discharging section, is equipped with horizontal mounting hole in partition, and be equipped on mounting hole
Cross wind control valve.In such manner, it is possible to as desired by control valve de-regulation stock guide feed zone, stock guide interlude and lead
The ascending air amount of the high temperature of exhaust vent on flitch discharging section, so that stock guide interlude, stock guide feed zone and stock guide go out
The ascending air amount and air pressure size of the high temperature of exhaust vent can be controlled as needed in material section, meet each section to processing
The demand of effect and wind-force size.Enable each section that completion is preferably cooperated to be dried.
As optimization, the shell includes that the entirety of upper end is in the exhaust hood of vertical tubular construction, the lower end of exhaust hood
It is arranged in flaring and is connected to hothouse upper end, the upper end of exhaust hood in closing-in structure and is connected with vertical air-exhausting duct, air draft
The upper end of pipe forms the exhaust outlet.
In this way, on the one hand can convenient and dry processing industry by-product gypsum powder after air flow collection in be emitted into outside equipment
On the other hand portion can preferably avoid industry by-product gypsum powder from being blown to device external by air-flow.
As optimization, the calciner include carrying roller and can vertical rotating the roller being arranged in above carrying roller；Rolling
One end of cylinder is feed end and is used to be connected with screw feeding equipment discharge end；Calcining air-flow is equipped on the outside of roller feed end to supply
Equipment is answered, calcines and is connected with discharge pipe on the air outlet of air-flow supply equipment and is extend into roller from roller feed end, rolling
The cylinder other end can vertical rotating be arranged with it is whole be in drum-shaped structure the cover that gathers materials, the downside surface for the cover that gathers materials be equipped with opening with
Form discharge end and for being connected with the feed end of chain row's conveyer；It is uniformly disposed on inner wall of rotary drum along its circumferencial direction more
The lifting blade of block strip, lifting blade length direction axially arrange along roller, and the inside of lifting blade width direction is towards in roller
Heart setting；And lifting blade is the multiple groups being axially set in distance along roller.
In this way, by preamble drying equipment treated industry by-product gypsum powder after the conveying of screw feeding equipment,
Entering from the feed end on roller, roller vertical rotating simultaneously conveys under the drive of lifting blade towards the discharge end of calciner,
Air-flow supply equipment being calcined simultaneously, calcining air-flow being sent into from the feed end of roller by the discharge pipe of setting, calcining is transported with air-flow
Capable direction is from equipment feed end towards discharge end, so that calcining air-flow can play promotion industry pair to a certain extent
Produce the effect that gypsum powder transports forward.Also, the temperature of the calcining air-flow just come out from calcining air-flow supply equipment is in
Optimum calcinating temperature, so that calcining, which has just been come out with air-flow from calcining air-flow supply equipment after exporting, just acts on industry by-product gypsum
On powder, enable to more preferable to industry by-product gypsum powder calcination processing effect.In addition, being conveyed by screw feeding equipment
Afterwards, from roller feed end enter industry by-product gypsum powder be easy roller feed end accumulate, calcining with air-flow first
It acts at the feed end on roller, can preferably avoid accumulation problem.Further, the calcining air-flow supply equipment is
Neat gas burner.In this way, structure is simpler, the controlled range of the temperature for the hot wind being capable of providing is bigger, more convenient
It uses.
As optimization, roller feed end can vertical rotating be arranged with it is whole be in drum-shaped structure hood, arranging
Gas hood is equipped with vertical exhaust pipe.
In this way, when calcining air-flow is run in roller, first being run from feed end to out hood is arranged in roller feed end
Expect end, then detour to feed end is then exhausted from again, can be adequately using calcining air-flow to the industry by-product gypsum in roller
Powder carries out calcination processing；Further, it is possible to will preferably be discharged in the exhaust gas centralized after calcination processing.
As optimization, the delivery sheet of strip is fixedly connected on roller feed end inner wall, delivery sheet is along roller circle
Circumferential direction is multiple in being evenly arranged；And delivery sheet front end in roller axially direction is integrally obliquely installed to ipsilateral.
In this way, at work, delivery sheet follows roller synchronous rotary；And inclined feedboard can generate screw feeding
Effect so that the industry by-product gypsum powder being deposited between inner wall of rotary drum and delivery sheet towards roller discharge end motion.
It can be good at avoiding the industry by-product gypsum powder entered from roller feed end to accumulate in roller feed end and from feed end end
Mouth drops out.
Further, screw feeding equipment export end extends inwardly to roller feed end port a distance and in feeding
In range locating for plate.The function and effect of delivery sheet can be preferably played in this way, and preferably avoid material from roller feed end
It drops out.
As optimization, the bin device includes the feed bin that vertical entirety is in funnel-shaped structure, and the upper end of feed bin is open
Form material posting port；And the lower end of feed bin is discharge port, and discharge valve is provided on discharge port.
In such manner, it is possible to facilitate control feed bin discharging.Further, including control section structure, control section structure include
The sensor module of time control module and feed bin inside bottom, the signal output end of sensor module and time control module
Signal input part is connected, and the signal output end of time control module is connected with the automatically controlled end of discharge valve.In this way, when in feed bin
Sensor module has detected that material enters feed bin and issues signal to time control module, and time control module starts to count at this time
When (setting time is that material needs the duration that is aged in feed bin, usually 4h), after reaching the preset time, time control mould
Block issues signal to the automatically controlled end of discharge valve, and controls outlet valve unlatching, starts to discharge.It can guarantee digestion time foot in this way
It is enough, stable half-H 2 O calcium sulphate is obtained after ageing, guarantees the stability of product, while making whole equipment more intelligent, is subtracted
Few human cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the industry by-product gypsum processing system in the specific embodiment of the invention.
Fig. 2 is the structural schematic diagram of the drying equipment in Fig. 1.
Fig. 3 is the structural schematic diagram of the calciner in Fig. 1.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing.
When specific implementation: a kind of industry by-product gypsum product method for innocent treatment, by powdered industry by-product gypsum
Raw material is heated at high temperature calcination processing, obtains sulfate hemihydrate calcium powder, and become industry by-product gypsum product raw material, special
Point is that heat drying contacts industry by-product gypsum powder with the ascending air of high temperature and pressure in the sky, first realizes
Physical separation, attached water and harmful substance by taking away calcium sulfate surface with the ascending air of high temperature and pressure；It then will separation
The land plaster of surface with harmful substance carries out crystallization water calcining again, so that its chemical breakdown is discarded a crystallization water, obtain half water stone
Cream powder is as industry by-product gypsum product raw material.
In this way, using industry by-product gypsum as material, industry by-product gypsum effectively can be carried out in the above method
Recycle, can be good at solve industry by-product gypsum largely store up, land occupation, waste of resource, the acidity contained and its
The problem of his harmful substance pollutes surrounding enviroment.
Meanwhile the above method, using industry by-product gypsum through high-temperature heating drying and calcining removal harmful components impurity and knot
During brilliant water obtains half water and wastewater industry by-product gypsum, specifically heat drying calcination process is, by the rising gas of high temperature
Industry by-product gypsum powder is blown to suspended dispersion by stream, then first under the effect of high temperature ascending air, in 800 DEG C of (700-
900 DEG C) synchronize the calcium sulfate attached water taken away in suspended dispersion in the environment temperature of left and right by high-temperature high-pressure air flow, and according to
Removal by attached water synchronizes the harmful substance ingredient for taking away the attachment of calcium sulfate surface, realizes physical separation, obtains two water of product
Calcium sulfate；Then further realize that part of sulfuric acid is taken away in Chemical Decomposition in 170 DEG C of (150-200 DEG C) left and right environment temperature lower calcinations
The calcium crystallization water obtains the industry by-product gypsum powder of half-H 2 O calcium sulphate.The semi-hydrated gypsum powder intensity of the raw material is high, condense,
It is frost mist free, not green tinged；It is the optimum feed stock of environment-friendly and green building materials of gypsum.
Industry by-product gypsum is usually that rock phosphate in powder extracts the resultant product that P elements prepare phosphate fertilizer, and applicant is to industrial by-product
Harmful components have carried out detailed analysis in gypsum, analyze by micro- sem observation and harmful components Crack cause, find all kinds of
The physical state of harmful components is mainly attached to the state on the surface of calcium sulfate.In this way, applicant considers targetedly to work
When the harmful substance ingredient of calcium sulfate attached water and the attachment of calcium sulfate surface in industry by-product gypsum powder is handled, by height
Temperature ascending air industry by-product gypsum powder is blown to suspended state, enable high temperature gas flow to a greater extent with industry pair
Gypsum powder contact is produced, and completes to adhere to calcium sulfate water evaporation under high-temperature high-pressure air flow effect, and rise in air-flow
The harmful substance ingredient that calcium sulfate surface is adhered to separate and taken away simultaneously, realizes the mode directly by physical separation, it can be with
The preferably harmful substance in removal industry by-product gypsum powder.Chemistry point targetedly is realized using the means of calcining again later
From the part of sulfuric acid calcium crystallization water is taken away, semi-hydrated gypsum is obtained.Therefore this method can remove in industry by-product gypsum to greatest extent
Harmful substance, the plastering being prepared using half water and wastewater industry by-product gypsum obtained above can have better matter
Amount, and can be good at solving the problems, such as product scum and become mildewed.
In present embodiment, the drying stage of physical separation attached water and harmful substance, drying temperature range is
700-900 DEG C (optimal is 800 DEG C), it is specially 10,000 Pa that dry environment high temperature gas flow, which enters the wind pressure to be greater than 9,000 Pa(), chemistry point
From the calcination stage for taking away partially crystallizable water, calcination temperature range is 150-200 DEG C (optimal is 170 DEG C), calcination environment air-flow
Air inlet pressure be 400-700Pa(it is optimal be 500Pa).
In this way, in the drying process, the effect of high temperature and pressure can be relied on so that the attached water of gypsum surface in the sky and
The flash evapn of ascending air contact, and then the attached water and harmful substance of gypsum surface are rapidly taken away during processing,
It cannot be properly arrived at the effect if temperature and pressure are too low, can be difficult to control if excessively high, cause to be easy directly to lose
It decrystallizes and water and further generates oxidation reaction.After drying, calcined using the gentle pressure of the temperature of lower range, it can
The steadily spilling of the control section crystallization water, obtains half-H 2 O calcium sulphate.
In treatment process, after physical separation, the exhaust gas formed after attached water and harmful substance is taken away to ascending air and is carried out
Harmless treatment；When harmless treatment, exhaust gas is first imported into neutralisation treatment tank, by neutralisation treatment tank by nuisance in tail gas
Matter first passes through water-soluble aquation, then carries out desulfurization neutralization by Dual alkali, and the water after neutralization becomes neutral water recycling；So
Exhaust gas after neutralizing afterwards is condensed again, is returned to gaseous vapor and remaining gas impurity in the water of liquid, is no longer generated
Emission realizes whole circular treatment.The circular treatment of exhaust gas, whole zero-emission is achieved, no pollution greatly mentions
The high feature of environmental protection and safety of equipment.
Referring to Fig. 1-3, the invention also discloses a kind of industry by-product gypsum processing system for the above method, features
It is, including drying equipment 1, calciner 2 and bin device 3, drying equipment is equipped with dry discharge port and for for industry
The dry feed mouth of by-product gypsum powder merging；And by horizontally disposed between the dry discharge port and calciner feed end
Screw feeding equipment 4 be connected；The linking of calciner discharge end is provided with chain row's conveyer 5, and chain row's conveyer 5 discharges
It is connected between end and the material posting port of bin device upper end by the elevator 6 of setting.
In this way, above-mentioned semi-hydrated gypsum preparation system is at work, industry by-product gypsum powder raw material is from drying equipment
Dry feed mouth enter, industry by-product gypsum powder after drying equipment is dried is from the dry discharging on drying equipment
Mouth outflow is delivered to calciner using material transfer equipment and enters from the calcining feed inlet on calciner, by forging
The calcined industry by-product gypsum powder of equipment is burnt from the calcining discharge port outflow on calciner, then the elevator by setting
By drying and calcining, treated that industry by-product gypsum powder is delivered to feed bin is aged.Above system prepares half water and wastewater industry by-product
Gypsum has the characteristics that simple process.And be dried respectively in half water and wastewater industry by-product gypsum preparation process and calcining at
Reason, two processing steps are mutually indepedent, when so that each leisure of the two being removed harmful substance and the crystallization water, will not generate phase
Mutual interference.Material lifting to bin device is subjected to ripening after calcining, stablizes its states of matter, can be improved to obtain
Half water and wastewater industry by-product gypsum quality, and then improve the quality of plastering being prepared.
In present embodiment, the drying equipment 1 includes horizontally disposed shell 7, and entirety is equipped in shell and is in
The stock guide 8 being obliquely installed, enclosure interior is separated into the hothouse 9 of top and the inlet air plenum 10 of lower section by stock guide, on shell
End, which is equipped with vertical exhaust outlet and is connected with the hothouse, to be connected；Position corresponding with stock guide top and bottom on hothouse side wall
Set be each provided with opening and corresponding is formationed dry feed mouth and dry discharge port；And several outlet air are equipped on stock guide
Hole is equipped with dry air inlet below the dry feed mouth described in the face on inlet air plenum side wall, further includes that dry gas stream supply is set
Standby 11, and the outlet air end of dry gas stream supply equipment is connected with dry air inlet.
In this way, above-mentioned drying equipment is at work, industry by-product gypsum powder is from the dry feed mouth on drying equipment
It is fallen on stock guide after, while dry gas stream supply equipment starts to work and is blown into high temperature drying wind, high temperature to inlet air plenum
Dry wind enters in hothouse after the exhaust vent on stock guide and is formed the ascending air of high temperature and pressure, the rising of high temperature
Industry by-product gypsum powder on stock guide can be blown to suspended state by air-flow, then first under high-temperature high-pressure air flow effect,
Fall attached water by high temperature gas flow flash evapn in 600-900 DEG C of environment temperature, synchronizes and take away calcium sulfate attached water and calcium sulfate
The harmful substance ingredient of surface attachment, realizes physical separation；Wherein be pulled away calcium sulfate attached water and calcium sulfate surface attachment
Harmful substance ingredient can be expelled to device external from the exhaust outlet of drying equipment under the drive of ascending air, can be in addition single
Purified treatment solely is carried out for emission again, can be avoided pollution, improves entire processing environment protecting, wherein vent gas treatment process
The prior art can be used, it is not described herein in detail.In above equipment structure, the structure and gradient to stock guide can be passed through
It is controlled, to realize required drying and calcining effect.
Therefore above-mentioned device structure is simple, can realize the harmful substance in removal industry by-product gypsum, processing well
Industry by-product gypsum material quality afterwards is good, and performance is more preferable.Further, the dry gas stream supply equipment is combustion of natural gas
Device.In this way, structure is simpler, and the controlled range of the temperature for the hot wind being capable of providing is bigger, more using mature existing product
Add convenient to use.
In present embodiment, the stock guide 8 is whole on the spacing direction of dry feed mouth and dry discharge port
It is designed in the three-stage of bending, and stock guide includes stock guide feed zone 12, stock guide interlude 13 and stock guide discharging section 14,
And the tilt angle of stock guide interlude is greater than the tilt angle of stock guide discharging section and stock guide feed zone.
In this way, by stock guide whole design at the three stage structure of bending, and including stock guide feed zone, stock guide among
Section and stock guide discharging section, three sections of stock guide structures corresponding dry preparation stage, drying stage and discharging preparation stage.
Industry by-product gypsum powder first passes through stock guide feed zone, then successively after stock guide interlude and stock guide discharging section from dry
Drying discharge port outflow in dry equipment.In the process, industry by-product gypsum powder is fallen on stock guide feed zone and by gas
It flows to front upper place and blows forward, stock guide feed zone paves material for dispersing, and dry place is better achieved for interlude below
Reason is ready.The tilt angle of stock guide feed zone is less than stock guide interlude, so that industry by-product gypsum powder is in guide
Forward speed on plate feed zone is less than the speed on stock guide interlude, under the action of the ascending air of high temperature, so that
Industry by-product gypsum powder can preferably be dispelled and it is more uniform be laid on stock guide feed zone upper surface, be subsequent work
Industry by-product gypsum powder, which enters after stock guide interlude, preferably can be blown to suspended state by the ascending air of high temperature and carry out standard
It is standby.Then stock guide interlude is main acting section, and material completes main drying process in this section, is acted in high temperature gas flow
Under, the harmful substance ingredient for taking away calcium sulfate attached water and the attachment of calcium sulfate surface is synchronized, realizes physical separation；Subsequent processing again
Material is after stock guide discharging section afterwards, and the speed of advance reduces, and material gradually precipitates, is conducive to from the drying on drying equipment
Discharge port discharge.
Better choice is when implementation, and the forward upward that is set as of exhaust vent in the longitudinal direction inclines on stock guide feed zone
Tiltedly setting.In this way first is that avoid material from having just enter into stock guide feed zone falls to lower section inlet air plenum out of exhaust vent.Second is that
It is set preferably to have the effect for driving material to be blown to suspension upwards forward and tentatively, to be ready into interlude.Into one
Step ground, stock guide feed zone feed end medium position and the linking of dry feed mouth, stock guide feed zone exhaust vent is in left and right directions
On be set as, middle part respectively to outside two sides top be obliquely installed.It is more conducive to being uniformly dispersed for material in this way.Further, it leads
Flitch feed zone upper surface is inclination or the arcuate structure that middle height is higher than height on both sides, is equally more favorable for material to two
Side is uniformly dispersed, and guarantee material guarantees stock guide interlude finally to material evenly into stock guide interlude
Treatment effect.Go out still further, the exhaust vent aperture of stock guide feed zone and dry feed mouth joining place is greater than remaining position
Air holes aperture, and upper surface covering is provided with ventilative cloth.This is because dry feed mouth inlet amount is bigger, therefore increase exhaust vent
Material can be preferably blown afloat behind aperture, while after avoiding a large amount of materials from falling into accumulation, material has little time to be blown afloat i.e. from outlet air
Hole is fallen into downwards.
In present embodiment, the exhaust vent on stock guide interlude is integrally obliquely installed rearwardly and upwardly.In this way, can be with
Material is avoided directly to fall to lower section from exhaust vent, while importantly, the direction can be preferably with material by self weight
The direction slid downwards is opposite, can preferably inversely brush material upwards to suspended state simultaneously and make material in the shape
It can be slided by self weight forward downward under state, so that material is completed heat exchange with thermal updrafts in this process, and be raised
High temperature hot gas stream directly takes away attached water and harmful substance ingredient.
In present embodiment, the exhaust vent that stock guide discharging section is equipped with is in horizontally forward or front lower place direction is set
It sets.
In this way, can preferably drive material to move ahead from the air-flow that exhaust vent on stock guide discharging section comes out realizes discharging,
Can avoid completely simultaneously stock guide discharging section due to after being reduced in inlet air plenum terminal position wind-force material fall into from exhaust vent.
, can also be further when implementation, between stock guide feed zone described in inlet air plenum and guide interlude and
Vertical partition is each provided between stock guide interlude and stock guide discharging section, in partition equipped with horizontal mounting hole, and
Wind control valve was installed on mounting hole.In such manner, it is possible to as desired by control valve de-regulation stock guide feed zone, lead
The ascending air amount of the high temperature of exhaust vent on flitch interlude and stock guide discharging section so that stock guide interlude, stock guide into
The ascending air amount and air pressure size of the high temperature of exhaust vent can be controlled as needed in material section and stock guide discharging section, full
Demand of the sufficient each section to treatment effect and wind-force size.Enable each section that completion is preferably cooperated to be dried.
In present embodiment, the shell 7 includes that the entirety of upper end is in the exhaust hood 15 of vertical tubular construction, row
The lower end of fan housing is arranged in flaring and is connected to hothouse upper end, and the upper end of exhaust hood in closing-in structure and is connected with vertical row
Air hose 16, the upper end of air-exhausting duct form the exhaust outlet.
In this way, on the one hand can convenient and dry processing industry by-product gypsum powder after air flow collection in be emitted into outside equipment
On the other hand portion can preferably avoid industry by-product gypsum powder from being blown to device external by air-flow.
In present embodiment, the calciner 2 include carrying roller 17 and can vertical rotating setting on carrying roller
The roller 18 of side；One end of roller is feed end and is used to be connected with screw feeding equipment discharge end；On the outside of roller feed end
Equipped with calcining air-flow supply equipment 19, calcines and be connected with discharge pipe on the air outlet of air-flow supply equipment and stretched from roller feed end
Enter into roller, the roller other end can vertical rotating be arranged with it is whole be in drum-shaped structure the cover 20 that gathers materials, gather materials cover
Downside surface is equipped with opening to form discharge end and for being connected with the feed end of chain row's conveyer；Along its circumference on inner wall of rotary drum
Direction is uniformly disposed with the lifting blade 21 of muti-piece strip, and lifting blade length direction is axially arranged along roller, lifting board width
The inside in direction is arranged towards centre of the drum；And lifting blade is the multiple groups being axially set in distance along roller.
In this way, by preamble drying equipment treated industry by-product gypsum powder after the conveying of screw feeding equipment,
Entering from the feed end on roller, roller vertical rotating simultaneously conveys under the drive of lifting blade towards the discharge end of calciner,
Air-flow supply equipment being calcined simultaneously, calcining air-flow being sent into from the feed end of roller by the discharge pipe of setting, calcining is transported with air-flow
Capable direction is from equipment feed end towards discharge end, so that calcining air-flow can play promotion industry pair to a certain extent
Produce the effect that gypsum powder transports forward.Also, the temperature of the calcining air-flow just come out from calcining air-flow supply equipment is in
Optimum calcinating temperature, so that calcining, which has just been come out with air-flow from calcining air-flow supply equipment after exporting, just acts on industry by-product gypsum
On powder, enable to more preferable to industry by-product gypsum powder calcination processing effect.In addition, being conveyed by screw feeding equipment
Afterwards, from roller feed end enter industry by-product gypsum powder be easy roller feed end accumulate, calcining with air-flow first
It acts at the feed end on roller, can preferably avoid accumulation problem.Further, the calcining air-flow supply equipment is
Neat gas burner.In this way, structure is simpler, the controlled range of the temperature for the hot wind being capable of providing is bigger, more convenient
It uses.
In present embodiment, roller feed end can vertical rotating be arranged with it is whole be in drum-shaped structure exhaust
Cover 22 is equipped with vertical exhaust pipe on hood.
In this way, when calcining air-flow is run in roller, first being run from feed end to out hood is arranged in roller feed end
Expect end, then detour to feed end is then exhausted from again, can be adequately using calcining air-flow to the industry by-product gypsum in roller
Powder carries out calcination processing；Further, it is possible to will preferably be discharged in the exhaust gas centralized after calcination processing.
In present embodiment, the delivery sheet 23 of strip, delivery sheet are fixedly connected on roller feed end inner wall
It is multiple in being evenly arranged along roll circumference direction；And delivery sheet front end in roller axially direction is whole to ipsilateral inclination
Setting.
In this way, at work, delivery sheet follows roller synchronous rotary；And inclined feedboard can generate screw feeding
Effect so that the industry by-product gypsum powder being deposited between inner wall of rotary drum and delivery sheet towards roller discharge end motion.
It can be good at avoiding the industry by-product gypsum powder entered from roller feed end to accumulate in roller feed end and from feed end end
Mouth drops out.
Further, screw feeding equipment export end extends inwardly to roller feed end port a distance and in feeding
In range locating for plate.The function and effect of delivery sheet can be preferably played in this way, and preferably avoid material from roller feed end
It drops out.
In present embodiment, the bin device includes the feed bin 24 that vertical entirety is in funnel-shaped structure, feed bin
Upper end opening formed material posting port；And the lower end of feed bin is discharge port, and discharge valve is provided on discharge port.
In such manner, it is possible to facilitate control feed bin discharging.It further include control section structure, control section knot in present embodiment
Structure includes the sensor module of time control module and feed bin inside bottom, and the signal output end of sensor module and time control
The signal input part of module is connected, and the signal output end of time control module is connected with the automatically controlled end of discharge valve.In this way, when material
Sensor module in storehouse has detected that material enters feed bin and issues signal to time control module, at this time time control module
Start timing (setting time is the duration that material needs to be aged in feed bin, usually 4h), after reaching the preset time, time
Control module issues signal to the automatically controlled end of discharge valve, and controls outlet valve unlatching, starts to discharge.It can guarantee to be aged in this way
Time is enough, and stable half-H 2 O calcium sulphate is obtained after ageing, guarantees the stability of product, while making whole equipment more intelligent
Change, reduces human cost.
Claims (10)
1. a kind of industry by-product gypsum product method for innocent treatment, by powdered industry by-product gypsum raw material, through high temperature plus
Hot calcination processing obtains sulfate hemihydrate calcium powder, and becomes the environmentally friendly raw material of industry by-product gypsum product, which is characterized in that adds
Heated drying contacts industry by-product gypsum powder with the ascending air of high temperature and pressure in the sky, first realizes physical separation,
Attached water and harmful substance by taking away calcium sulfate surface with the ascending air of high temperature and pressure；Then surface nuisance will have been separated
The land plaster of matter carries out crystallization water calcining again, so that it is discarded a crystallization water, obtain semi-hydrated gypsum powder as industrial by-product
Plastering environmental protection material.
2. a kind of industry by-product gypsum product method for innocent treatment according to claim 1, it is characterised in that: physics point
Drying stage from attached water and harmful substance, drying temperature range are 700-900 DEG C, and dry environment high temperature gas flow enters the wind pressure
Greater than 9,000 Pa；Calcination stage, calcination temperature range are 150-200 DEG C, and it is 400-700Pa that calcination environment air-flow, which enters the wind pressure,.
3. a kind of industry by-product gypsum product method for innocent treatment according to claim 2, it is characterised in that: physics point
From rear, the exhaust gas formed after attached water and harmful substance is taken away to ascending air and carries out harmless treatment；When harmless treatment, first
Exhaust gas is imported into neutralisation treatment tank, by neutralisation treatment tank by harmful substance in tail gas, first passes through water-soluble aquation, then pass through double alkali
Method carries out desulfurization neutralization, and the water after neutralization becomes neutral water recycling；Then the exhaust gas after neutralizing is condensed again, makes gas
The vapor and remaining gas impurity of state return in the water of liquid, no longer generation emission, realize whole recycle.
4. a kind of industry by-product gypsum product method for innocent treatment according to claim 2, it is characterised in that: dry temperature
Degree is 800 DEG C, and dry environment high temperature gas flow air inlet pressure wind pressure is 10,000 Pa, and calcination temperature is 170 DEG C, calcination environment air-flow air inlet
Pressure is 500Pa.
5. a kind of industry by-product gypsum processing system, which is characterized in that filled including drying equipment (1), calciner (2) and feed bin
It sets (3), drying equipment is equipped with dry discharge port and the dry feed mouth for being placed in for industry by-product gypsum powder；And it is described
It is connected between dry discharge port and calciner feed end by horizontally disposed screw feeding equipment (4)；Go out in calciner
The linking of material end is provided with chain row conveyer (5), and the material posting port of chain row conveyer (5) discharge end and bin device upper end
Between by setting elevator (6) linking.
6. industry by-product gypsum processing system according to claim 4, it is characterised in that: the drying equipment (1) includes
Horizontally disposed shell (7) is equipped with the stock guide (8) being integrally inclined to set in shell, and stock guide separates enclosure interior
At the hothouse (9) of top and the inlet air plenum (10) of lower section, shell upper end is equipped with vertical exhaust outlet and is connected with the hothouse
It is connected；Position corresponding with stock guide top and bottom is each provided with opening and corresponding formation dry feed on hothouse side wall
Mouth and dry discharge port；And several exhaust vents, the dry feed described in the face on inlet air plenum side wall are equipped on stock guide
Mouthful lower section is equipped with dry air inlet, further includes dry gas stream supply equipment (11), and the outlet air end of dry gas stream supply equipment with
Dry air inlet is connected.
7. industry by-product gypsum processing system according to claim 5, it is characterised in that: the stock guide (8) is in drying
It is integrally designed in the three-stage of bending on the spacing direction of feed inlet and dry discharge port, and stock guide includes stock guide feed zone
(12), stock guide interlude (13) and stock guide discharging section (14), and the tilt angle of stock guide interlude is greater than stock guide
The tilt angle of discharging section and stock guide feed zone.
8. industry by-product gypsum processing system according to claim 6, it is characterised in that: go out on stock guide feed zone (14)
The forward upward that is set as of air holes in the longitudinal direction is obliquely installed；
Exhaust vent on stock guide interlude (13) is integrally obliquely installed rearwardly and upwardly；
The exhaust vent that stock guide discharging section (12) is equipped with is in horizontally forward or front lower place direction is arranged；
The shell (7) includes that the entirety of upper end is in the exhaust hood (15) of vertical tubular construction, and the lower end of exhaust hood is in flaring
It is arranged and is connected to hothouse upper end, the upper end of exhaust hood in closing-in structure and is connected with vertical air-exhausting duct (16), air-exhausting duct
Upper end form the exhaust outlet.
9. industry by-product gypsum processing system according to claim 4, it is characterised in that: the calciner (2) includes
Carrying roller (17) and can vertical rotating the roller (18) being arranged in above carrying roller；One end of roller is feed end and is used for and spiral shell
Revolve the linking of feeder equipment discharge end；Calcining air-flow supply equipment (19) is equipped on the outside of roller feed end, calcining air-flow supply is set
Be connected with discharge pipe on standby air outlet and extend into roller from roller feed end, the roller other end can vertical rotating set
Equipped with it is whole be in drum-shaped structure the cover that gathers materials (20), the downside surface for the cover that gathers materials be equipped with opening with formed discharge end and for
Chain arranges the feed end linking of conveyer；The lifting blade of muti-piece strip is uniformly disposed on inner wall of rotary drum along its circumferencial direction
(21), lifting blade length direction is axially arranged along roller, and the inside of lifting blade width direction is arranged towards centre of the drum；And it raises
Flitch is the multiple groups being axially set in distance along roller；
Roller feed end can vertical rotating be arranged with it is whole be in drum-shaped structure hood (22), be equipped on hood
Vertical exhaust pipe.
10. industry by-product gypsum processing system according to claim 8, it is characterised in that: on roller feed end inner wall
It is fixedly connected with the delivery sheet (23) of strip, delivery sheet is multiple in being evenly arranged along roll circumference direction；And delivery sheet
Front end is integrally obliquely installed to ipsilateral in roller axially direction；
The bin device includes the feed bin (24) that vertical entirety is in funnel-shaped structure, and the upper end opening of feed bin forms material and sets
Entrance；And the lower end of feed bin is discharge port, and discharge valve is provided on discharge port.
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| JPS6234687B2 (en) * | 1979-11-09 | 1987-07-28 | Sumitomo Cement Co | |
| CN101186422A (en) * | 2007-12-14 | 2008-05-28 | 东南大学 | Enclosed multi-chamber fluidized bed drying method for sludge |
| CN201367395Y (en) * | 2009-03-22 | 2009-12-23 | 张建兵 | Combined production device of building plaster powder |
| CN103553386A (en) * | 2013-11-19 | 2014-02-05 | 罗甚先 | Gypsum drying and calcining machine |
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| CN111333353B (en) | 2022-04-19 |
| CN111333353A (en) | 2020-06-26 |
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