CN105731843A - Dustless production method of building gypsum powder - Google Patents
Dustless production method of building gypsum powder Download PDFInfo
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- CN105731843A CN105731843A CN201610043039.0A CN201610043039A CN105731843A CN 105731843 A CN105731843 A CN 105731843A CN 201610043039 A CN201610043039 A CN 201610043039A CN 105731843 A CN105731843 A CN 105731843A
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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
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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
- C04B11/02—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
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a dustless production method of building decorative gypsum powder. The method comprises crushers, a lifter, a crude material bin, a feeding machine, a dust settling chamber, a fluidized bed furnace, a dewaterer, a kiln head feed hood, a screw conveyer, a clinker bin, a pulverizer, a finished product bin, a packaging machine, a blast blower, a wet dust tank, a dust settling hopper, a cyclone dust collector, a desulfurizing tower, an induced fan and a chimney. The method is characterized in that the two stages of crushers are installed in a sealed crushing chamber; the jaw crusher and hammer crusher are connected in series up and down; an outlet is connected with the lifter; the material is sent into the crude material bin; an outlet of the crude material bin is provided with the feeding machine, and connected with an inlet of the discharge hood; the material is sent into the clinker bin; an outlet is provided with the pulverizer, and the material enters the finished product bin and enters the packaging machine; the roller of the dewaterer is arranged in the fluidized bed furnace; a dust settling chamber exhaust pipe is connected with a cyclone dust collecting system through the dust settling hopper; the smoke is discharged by the induced fan via the water-bath desulfurizing tower to the chimney; and the dust is discharged into the wet dust tank and transported out by a forklift. The invention provides an advanced dustless production method of gypsum powder, which is worthy of popularization.
Description
Technical field
The present invention relates to a kind of dustless production method of building gypsum plaster, specifically a kind of dustless production method of building gypsum plaster continuous way, belong to building material technical field.
Background technology
The old-fashioned production method of Gypsum Fibrosum powder, is the production method of a kind of clearance-type, and it is to utilize the marmite rotated, and adopts external heat that Gypsum Fibrosum is carried out dehydration, by hand stock, after dehydration certain time, then discharging of reversing, the work gone round and begun again.When this production system power consumption, consumption fuel, work consuming；And workshop dust from flying, working environment extreme difference, the ecological environment of surrounding several kilometers there is is considerable influence, has a strong impact on the healthy of resident and production activity.
Summary of the invention
For overcoming the defect in existing land plaster method, the present invention provides a kind of architectural decoration dustless production method of Gypsum Fibrosum powder continuous way.
In order to solve above technical problem, the present invention provides a kind of architectural decoration dustless production method of Gypsum Fibrosum powder continuous way, including: jaw crusher, hammer mill, seal crushing chamber, raw material elevator, raw material silo, disk feeder, dust-settling compartment, fluidized bed furnace, dewaterer barrel, kiln head cover, kiln hood, dust-settling compartment auger, grog elevator, grog storehouse, pulverizer, finished bin, packer, aerator, fluidized bed furnace bellows, wet ashpit, wet ashpit waterline, dust-settling compartment exhaustor, depositing dust bucket, depositing dust bucket exhaustor, cyclone dust extractor, cyclone dust extractor exhaustor, duplex cleaner unit, duplex cleaner unit exhaustor, water bath desulfurization tower exhaustor, water bath desulfurization tower, air-introduced machine, chimney, duplex relay valve, dewaterer exhaustor;It is characterized in that: the input at raw material silo is provided with two stage crusher and raw material elevator, is arranged in the sealing crushing chamber of opposing seal;nullThe outlet of jaw crusher connects with the charging aperture of hammer mill，The discharging opening of hammer mill connects with the charging aperture of raw material elevator，The discharging opening of raw material elevator connects with the charging aperture of raw material silo，The outlet diameter of raw material silo is not less than 500mm，Disk feeder is installed，Disk feeder disk diameter is not less than 1000mm，The discharge port of disk feeder connects with the charging aperture of dewaterer barrel and kiln head cover，Gypsum particle dehydration temperaturre of high temperature dehydration room in dewaterer barrel is 175-195 degree，Dewaterer barrel discharging opening is provided with kiln hood，Outlet connects with grog elevator charging aperture，Drop temperature will be very strict control within 140-150 degree，Grog elevator discharging opening connects with grog storehouse charging aperture，Grog is provided with radiating tube in storehouse，Vertically arranged radiating tube top and bottom are all stretched out outside feed bin，Between radiating tube, spacing is 500mm；Ripe bin outlet is provided with pulverizer, and the outlet of pulverizer connects with the charging aperture of finished bin, and the particle diameter after grog pulverizing is 80-150 order, and the outlet of finished bin is provided with packer, by packer by finished product Gypsum Fibrosum powder packaging warehouse-in.
The kiln that described fluidized bed furnace is made up of refractory material, is provided with spin-drier barrel in kiln, the blast cap of kiln body has fluidized bed furnace bellows and is connected with the outlet of aerator.
Described dust-settling compartment utilizes fluidized bed furnace waste heat, it is located at the top of fluidized bed furnace, the air inlet pipe of dust-settling compartment connects with dewaterer exhaustor, the top of dust-settling compartment is provided with the exhaustor of valve, this exhaustor and fluidized bed furnace exhaustor simultaneously enter in depositing dust bucket, most bigger grit is all fallen at this in depositing dust bucket, wet ashpit is entered again by duplex relay valve, the exhaustor of depositing dust bucket connects with cyclone dust extractor blast pipe, cyclone dust extractor exhaustor connects with duplex cleaner unit blast pipe, duplex cleaner unit exhaustor connects with water bath desulfurization tower blast pipe, water bath desulfurization tower exhaustor connects with air-introduced machine blast pipe, air-introduced machine exhaustor connects with chimney blast pipe.
Dust-settling compartment is formed by not welded steel plate, the leftover bits and pieces of oblique type room plate is provided with dust-settling compartment auger, the dehydracetic acid spray dust produced in dewaterer, high temperature is met by the water evaporates in acid mist dirt in dust-settling compartment, dry dust slips in dust-settling compartment auger, dust-settling compartment auger dry dirt is sent to kiln hood and simultaneously enters grog elevator feeding grog storehouse with grog.
Water bath desulfurization tower adopts the water bath dust-removing desulfurizing tower of sieve tray water-bath type aqueous alkali desulfurization, air inlet pipe outlet skewer enters water bath desulfurization tower waterline 30-50mm, emptying net plastics ball on sieve tray, improves dust-removal and desulfurizing effect, owing in fluidized bed furnace and dust-settling compartment tail gas, sulfurous gas chance water can synthesize dilute sulfuric acid, alkali or quick lime is added in pond, the acid-base value of water in neutralizing water tank, clear water flows into clear water reserviors, continued by water pump feeding water bath desulfurization tower and read to use, waste water enters wet ashpit, and closed cycle is free from environmental pollution.
Wet ash pond is located under fluidized bed furnace, is positioned at the side of dust pelletizing system, depositing dust bucket, cyclone dust extractor, duplex cleaner unit duplex relay valve dry dirt is entered wet ashpit, wet ashpit is equipped with the water of fixing water level, being soaked by dirt ash, wet ashpit one end is designed as slope pavement, it is simple to forklift ash discharge is got on the bus outward transport;The dry dirt of dust pelletizing system does not cause secondary pollution, and dust pelletizing system operates without special messenger.
Gypsum particle diameter after two-stage is broken is within 8mm.
The volume of raw material silo is designed as: within broken 8 hours, raw material can produce 24 hours for production line, can save artificial and the electricity charge.
The outlet diameter of raw material silo is not less than 500mm; disk feeder disk diameter is not less than 1000mm; this is the big invention of since the dawn of human civilization to design super large raw material silo; the too little meeting of outlet diameter is seriously drawn and is rung bin blanking; when raw meal particulate time of staying in feed bin is little more than 24 or after the longer time, raw meal particulate can reduce caking, arching; design strengthens outlet diameter, and blanking can be much smoother.
Jaw crusher charging aperture is equal with raw material storage ground, by forklift to jaw crusher feed.
Fluidized bed furnace fire box temperature 850-950 degree, gypsum particle is 175-195 degree in the dehydration temperaturre that the high temperature dehydration of dewaterer barrel is indoor, within grog drop temperature 140-150 degree, lower than 140 degree, gypsum dehydration is incomplete, after 150 degree, in product, anhydrous gypsum increases, and both can draw the intensity ringing Gypsum Fibrosum powder test block and setting time.
Dewaterer barrel rotating speed is 0.8-1 rev/min, and rotating speed too high or too low all can drawing rings product quality.
Charging rate is controlled by the rotating speed of disk feeder, disk feeder uses variable-speed motor, the rotating speed of disk feeder is determined by drop temperature and product qualification rate, only when two above condition pays conjunction requirement all simultaneously, charging rate is the control rotating speed of disk feeder, data are tested in footpath when though it is equipment debugging, but process control parameter when namely producing.
A kind of dustless production method of building decoration Gypsum Fibrosum powder of the present invention is compared with original clearance-type production system, there is following progress: 1, the present invention steam to producing in gypsum particle dehydration and subsidiary dust and sulfurous gas, utilize the waste heat at fluidized bed furnace top, dust-settling compartment process and reclaim dust；2, the tail gas of fluidized bed furnace enters back into water bath desulfurization tower heel row to air after three-stage dust catcher, therefore, not only workshop dust pollution is little, particularly the ecological environment of surrounding is not polluted, writing environmental pollution expense, annual also recyclable hundreds of tons of finished product Gypsum dust can be reduced for enterprise;3, two stage crusher is arranged in the crushing chamber of sealing, decreases the environmental pollution to workshop and Factory Building surrounding.4. the production method of the present invention can reduce production cost, reduces energy resource consumption, is dropped to 9 yuan/ton of powder, power saving 167% through one ton of Gypsum Fibrosum powder of production on probation by 24-26 yuan/ton of powder of original electricity consumption;Fuel cost is dropped to 18 yuan/ton of powder by 45-50 yuan/ton of original powder, saves fuel cost 250%；5, can raising labour productivity, original clearance-type production system every workday produces about 3 tons, on average produces 10-15 ton with the every workday after the present invention, saves artificial 300-400%；Factory's production capacity of same scale is brought up to 4-5 ten thousand tons/year by original 1.8 ten thousand tons/year, improves production capacity 220%.6, wet ashpit under design fluidized bed furnace, Bottom Ash Produced From Fbc Boiler and dust pelletizing system dirt ash fully enter in wet ashpit by water-soaked, forklift entrucking transport outward, and decrease secondary pollution, and dust pelletizing system operates without special messenger.
In sum, the present invention is summing up for many years, the experience of Gypsum Fibrosum powder processing and failure, and development and Design goes out that this set of comparison is complete and a set of production method of relative maturity, its advantage is achieving the dustless production of Gypsum Fibrosum powder continuous way, high degree improve production environment;The process of fluidized bed furnace tail dirt, the processing method that design is optimum, it is in that multistage dust-removal and desulfurizing, can qualified discharge;Under stove, the processing method of wet ash is also the big invention of so far, and he has not only processed dirt ash nearby, moreover it is possible to alleviating secondary pollution, and can accomplish the direct entrucking outward transport of forklift, dust pelletizing system achieves unattended;Be put promote the FA plaster of Paris powder producing method of one.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is Figure 1A-A sectional view and dust pelletizing system structural representation.
nullIn accompanying drawing: 1. jaw crusher、2. hammer mill、3. seal crushing chamber、4. raw material elevator、5. raw material silo、6. disk feeder、7. dust-settling compartment、8. fluidized bed furnace、9. dewaterer barrel、10. kiln head cover、11. kiln hood、12. dust-settling compartment auger、13. grog elevator、14. grog storehouse、15. pulverizer、16. finished bin、17、Packer、18. aerator、19. fluidized bed furnace bellows、20. wet ashpit、21. wet ashpit waterline、22. dust-settling compartment exhaustor、23. depositing dust bucket、24. depositing dust bucket exhaustor、25. cyclone dust extractor、26. cyclone dust extractor exhaustor、27. doubly-linked cleaner unit、28. doubly-linked cleaner unit exhaustor、29. water bath desulfurization tower exhaustor、30. water bath desulfurization tower、31. air-introduced machine、32. chimney、33. duplex relay valve、34. dewaterer exhaustor.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
With reference to accompanying drawing: the input at raw material silo 5 is provided with two stage crusher and raw material elevator 4, is arranged in the sealing crushing chamber 3 of opposing seal;nullThe outlet of jaw crusher 1 connects with the charging aperture of hammer mill 2，The discharging opening of hammer mill 2 connects with the charging aperture of raw material elevator 4，The discharging opening of raw material elevator 4 connects with the charging aperture of raw material silo 5，The outlet diameter of raw material silo 5 is not less than 500mm，Disk feeder 6 is installed，Disk feeder 6 disk diameter is not less than 1000mm，The discharge port of disk feeder 6 connects with the charging aperture of dewaterer barrel 9 and kiln head cover 10，The dehydration temperaturre of gypsum particle high temperature dehydration room in dewaterer barrel 9 is 175-195 degree，Dewaterer barrel 9 discharging opening is provided with kiln hood 11，Outlet connects with grog elevator 13 charging aperture，Grog drop temperature to be strict controlled within 140-150 degree very much，Grog elevator 13 discharging opening connects with grog storehouse 14 charging aperture，Grog storehouse 14 outlet is provided with pulverizer 15，The outlet of pulverizer 15 connects with the charging aperture of finished bin 16，The internal volume of finished bin 16 can not more than 1 cubic metre，Air it is full of in powder body after pulverizing，Its angle of repose is only small，Can significantly alleviate the load of packer 17，Improve packaging speed，Particle diameter after grog pulverizing is 80-150 order，The outlet of finished bin 16 is provided with packer 17 by finished product Gypsum Fibrosum powder packaging warehouse-in.
The kiln that described fluidized bed furnace 8 is made up of refractory material, is provided with spin-drier barrel 9 in kiln, the blast cap of kiln body has fluidized bed furnace bellows 19 and is connected with the outlet of aerator 18.
Described dust-settling compartment 7 utilizes the waste heat of fluidized bed furnace 8, it is located at the top of fluidized bed furnace 8, the air inlet pipe of dust-settling compartment 7 connects with dewaterer exhaustor 34, the top of dust-settling compartment 7 is provided with the dust-settling compartment exhaustor 22 of valve, the exhaustor of this exhaustor and fluidized bed furnace 8 simultaneously enters in depositing dust bucket 23, most bigger grit is all fallen at this in depositing dust bucket 23, wet ashpit 20 is entered again by duplex relay valve 33, the depositing dust bucket exhaustor 24 of depositing dust bucket 23 connects with cyclone dust extractor 25 blast pipe, cyclone dust extractor exhaustor 26 connects with duplex cleaner unit 27 blast pipe, duplex cleaner unit exhaustor 28 connects with water bath desulfurization tower 30 blast pipe, water bath desulfurization tower exhaustor 29 connects with air-introduced machine 31 blast pipe, air-introduced machine 31 exhaustor connects with chimney 32 blast pipe.
Dust-settling compartment 7 is welded by corrosion resistant plate, the leftover bits and pieces of oblique type room plate is provided with dust-settling compartment auger 12, the dehydracetic acid spray dust produced in dewaterer rolling element 9, high temperature is met by the water evaporates in acid mist dirt in dust-settling compartment 7, dry dust slips in dust-settling compartment auger 12, dust-settling compartment auger 12 be sent in kiln hood 11 by dry dirt and grog simultaneously enters grog elevator 13 and sends into grog storehouse 14.
Water bath desulfurization tower 30 adopts the water bath dust-removing desulfurizing tower 30 of sieve tray water-bath type aqueous alkali desulfurization, air inlet pipe outlet skewer enters water bath desulfurization tower 30 waterline 30-50mm, emptying net plastics ball on sieve tray, improve dust-removal and desulfurizing effect, owing in fluidized bed furnace 8 and dust-settling compartment 7 tail gas, sulfurous gas chance water can synthesize dilute sulfuric acid, alkali or quick lime is added in wet ashpit 20, neutralize the acid-base value of water in wet ashpit 20, clear water flows into clear water reserviors, sent into water bath desulfurization tower 30 by water pump and relay reading use, waste water enters wet ashpit 20, and closed cycle is free from environmental pollution.
Wet ashpit 20 is located at the lower section of fluidized bed furnace 8 and dust pelletizing system, depositing dust bucket 23, cyclone dust extractor 25, duplex cleaner unit 27 duplex relay valve 33 dry dirt is entered wet ashpit 20, wet ashpit 20 is equipped with the water of fixing wet ashpit waterline 21, dirt ash is soaked, wet ashpit 20 one end is designed as slope pavement, being easy to forklift ash discharge get on the bus outward transport, the dry dirt of dust pelletizing system does not cause secondary pollution, and dust pelletizing system operates without special messenger.
During work, through Hubei Province, broken first the breaking of machine 1 enters back into hammer mill 2 thin broken to selected gypsum raw ore, require that pellet diameter is at below 8mm, enter back into raw material elevator 4 to be loaded by raw material in raw material silo 5, the outlet of raw material silo 5 is equipped with disk feeder 6, quantitatively raw material are sent in dewaterer barrel 9, through fluidized bed furnace 8 thermal dehydration, gypsum dehydration temperature 175-195 degree in dewaterer barrel 9, fluidized bed furnace 8 fire box temperature 850 DEG C-950 DEG C, generating semi-hydrated gypsum, drop temperature is strict controlled within 140-150 degree very much.
Dewaterer barrel 9 discharging opening is provided with kiln hood 11, outlet connects with grog elevator 13 charging aperture, grog elevator 13 discharging opening connects with grog storehouse 14 charging aperture, grog entrance grog storehouse 14 homogenizing enters pulverizer 15 and pulverizes after 24 hours, about powder particle diameter 80-150 order, enter back into packer 17 after entering finished bin 16 and carry out packaging warehouse-in.
The acid mist dirt generated in dewaterer barrel 9 enters dust-settling compartment 7 through dewaterer exhaustor 34, bake through high temperature, water evaporates, dry dirt is sent into kiln hood 11 by dust-settling compartment auger 12 and is recycled, and dry dirt and grog simultaneously enter grog elevator 13 charging aperture and send into homogenizing in grog storehouse 14.
The air inlet pipe of dust-settling compartment 7 connects with dewaterer exhaustor 34, and dust-settling compartment 7 tail gas is simultaneously entered depositing dust bucket 23 by Valve controlling flow with fluidized bed furnace 8 tail gas through dust-settling compartment exhaustor 22;Dust-containing tail gas enters cyclone dust extractor 25 after depositing dust bucket 23, enters back into duplex cleaner unit 27, and subsequently into water bath desulfurization tower 30, tail gas is entered chimney 32 discharged to air by air-introduced machine 31 by the tail gas of water bath desulfurization tower 30.
Claims (6)
1. the dustless production method of building decoration Gypsum Fibrosum powder, including: jaw crusher, hammer mill, seal crushing chamber, raw material elevator, raw material silo, disk feeder, dust-settling compartment, fluidized bed furnace, dewaterer barrel, kiln head cover, kiln hood, dust-settling compartment auger, grog elevator, grog storehouse, pulverizer, finished bin, packer, aerator, fluidized bed furnace bellows, wet ashpit, wet ashpit waterline, dust-settling compartment exhaustor, depositing dust bucket, depositing dust bucket exhaustor, cyclone dust extractor, cyclone dust extractor exhaustor, duplex cleaner unit, duplex cleaner unit exhaustor, water bath desulfurization tower exhaustor, water bath desulfurization tower, air-introduced machine, chimney, duplex relay valve, dewaterer exhaustor;It is characterized in that: the input at raw material silo is provided with two stage crusher and raw material elevator, is arranged in the sealing crushing chamber of opposing seal;The outlet of jaw crusher connects with the charging aperture of hammer mill, the discharging opening of hammer mill connects with the charging aperture of raw material elevator, the discharging opening of raw material elevator connects with the charging aperture of raw material silo, the discharging opening that raw material silo strengthens is provided with disk feeder, the discharge port of disk feeder connects with the charging aperture of dewaterer barrel and kiln head cover, dewaterer barrel discharging opening is provided with kiln hood, outlet connects with grog elevator charging aperture, grog elevator discharging opening connects with grog storehouse charging aperture, ripe bin outlet is provided with pulverizer, the outlet of pulverizer connects with the charging aperture of finished bin, the outlet of finished bin is provided with packer, by packer, finished product packing is put in storage;The kiln that described fluidized bed furnace is made up of refractory material, is provided with spin-drier barrel in kiln, the blast cap of kiln body has fluidized bed furnace bellows and is connected with the outlet of aerator;Described dust-settling compartment utilizes fluidized bed furnace waste heat, being located at the top of fluidized bed furnace, the air inlet pipe of dust-settling compartment connects with dewaterer exhaustor, and dust-settling compartment is provided with the exhaustor of valve, the exhaustor of this exhaustor and fluidized bed furnace simultaneously enters in depositing dust bucket, and dirt ash is entered wet ash pond by duplex relay valve;The exhaustor of depositing dust bucket connects with cyclone dust extractor blast pipe, cyclone dust extractor exhaustor connects with duplex cleaner unit blast pipe, duplex cleaner unit exhaustor connects with water bath desulfurization tower blast pipe, and water bath desulfurization tower exhaustor connects with air-introduced machine blast pipe, and air-introduced machine exhaustor connects with chimney blast pipe;Dust-settling compartment is formed by not welded steel plate, the leftover bits and pieces of oblique type room plate is provided with dust-settling compartment auger, the dehydracetic acid spray dust produced in dewaterer, in dust-settling compartment, pre-high temperature is by the water evaporates in acid mist dirt, dry dust slips in dust-settling compartment auger, by dust-settling compartment auger, dry dirt is sent to kiln hood, in kiln hood, simultaneously enters grog elevator charging aperture with grog send in grog storehouse;Water bath desulfurization tower adopts the water bath dust-removing desulfurizing tower of sieve tray water-bath type aqueous alkali desulfurization, air inlet pipe outlet skewer enters in water bath desulfurization tower waterline, emptying net plastics ball on sieve tray, owing in fluidized bed furnace and dust-settling compartment tail gas, sulfurous gas chance water can synthesize dilute sulfuric acid, alkali or quick lime is added in pond, the acid-base value of water in neutralizing water tank, clear water flows into clear water reserviors, water pump feeding water bath desulfurization tower continue and read to use;Wet ashpit is located under fluidized bed furnace and dust pelletizing system, depositing dust bucket, cyclone dust extractor, duplex cleaner unit duplex relay valve dry dirt is entered wet ashpit, dirt ash, equipped with the water of fixing water level, is soaked by wet ashpit, wet ashpit one end is designed as slope pavement, it is simple to forklift ash discharge is got on the bus outward transport.
2. a kind of dustless production method of building decoration Gypsum Fibrosum powder according to claim 1, is characterized in that: the outlet diameter of raw material silo is not less than 500mm, and disk feeder disk diameter is not less than 1000mm.
3. a kind of dustless production method of building decoration Gypsum Fibrosum powder according to claim 1, it is characterized in that: fluidized bed furnace fire box temperature 850-950 degree, gypsum particle dehydration temperaturre in dewaterer barrel is 175-195 degree, and the control that drop temperature will be very strict is within 140-150 degree.
4. a kind of dustless production method of building decoration Gypsum Fibrosum powder according to claim 1, is characterized in that: dewaterer barrel rotating speed is 0.8-1 rev/min.
5. a kind of dustless production method of building decoration Gypsum Fibrosum powder according to claim 1, is characterized in that: the particle diameter after grog pulverizing is 80-150 order.
6. a kind of dustless production method of building decoration Gypsum Fibrosum powder according to claim 1, is characterized in that: water bath desulfurization tower air inlet pipe outlet skewer enters water bath desulfurization tower waterline 30-50mm.
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| CN201610043039.0A CN105731843A (en) | 2016-01-23 | 2016-01-23 | Dustless production method of building gypsum powder |
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| CN201610043039.0A CN105731843A (en) | 2016-01-23 | 2016-01-23 | Dustless production method of building gypsum powder |
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| CN109011997A (en) * | 2018-09-14 | 2018-12-18 | 杨朴 | A kind of calcium sulphate dihydrate is dehydrated the processing method of acid cloud |
| CN110423026A (en) * | 2019-06-27 | 2019-11-08 | 康定龙源穗城石膏有限责任公司 | A kind of land plaster manufacture craft and system |
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Application publication date: 20160706 |