CN105985036A - Processing method for phosphogypsum - Google Patents
Processing method for phosphogypsum Download PDFInfo
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- CN105985036A CN105985036A CN201510075955.8A CN201510075955A CN105985036A CN 105985036 A CN105985036 A CN 105985036A CN 201510075955 A CN201510075955 A CN 201510075955A CN 105985036 A CN105985036 A CN 105985036A
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- gypsum
- gypsum fibrosum
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- storage tank
- ardealite
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Abstract
The invention provides a processing method for phosphogypsum, belonging to the field of building materials. The processing method comprises the following steps: adding phosphogypsum into a feed apparatus; adding 5% or less quicklime into a feeding apparatus by using a lime feeding system; feeding a material into a calciner by using an integrated material feeding apparatus; carrying out calcining by using a secondary drying and calcining machine, wherein the end part of the secondary drying and calcining machine is provided with a flaming furnace and the discharge outlet of the secondary drying and calcining machine adopts hierarchical outlets, and delivering gypsum at the outlet into a blending, homogenizing, reducing and conveying apparatus to allow the gypsum to fully contact with air and fully reduced; conveying defective gypsum to a defective gypsum storage tank while qualified gypsum to a semi-finished gypsum product storage tank by using the conveying apparatus; and conveying the gypsum in the defective gypsum storage tank into a gypsum crystal structure conversion apparatus for processing so as to change the crystal structure of phosphogypsum. A phosphogypsum processing and production line is used for completing the whole processing procedure; so phosphogypsum doing harm to the environment is converted into a useful building material, and the use the characteristic of utilization of the waste is obtained.
Description
Art
The invention belongs to building material field, particularly to the processing method of a kind of ardealite.
Background technology
Ardealite is to produce phosphatic a kind of side-product, it it is the insoluble difficulty of one faced in detergents and cosmetic and related chemistry commercial production, each producer spends substantial amounts of place and expense for storing and processing ardealite, cause severe contamination to surrounding enviroment, annoying the production and operation of relevant enterprise；Along with the coal-burning boiler raising to emission request, the side-product that wherein sulfur removal technology produces also is Gypsum Fibrosum；Gypsum Fibrosum application on building materials is that the Gypsum Fibrosum containing two water of crystallization is sintered into the Gypsum Fibrosum containing half water of crystallization, referred to as semi-hydrated gypsum mostly；In the calcination process of dihydrate gypsum, Gypsum Fibrosum is heated to 1300C-2300C so that separate out containing free moisture and water of crystallization in Gypsum Fibrosum, become semi-hydrated gypsum, in order to be applied to building field；At present, mostly use stove external heat, control in-furnace temperature 1650About C, through after a while, makes dihydrate gypsum become semi-hydrated gypsum, when temperature is more than 2300C, will change into anhydrous gypsum, and Gypsum Fibrosum is a kind of construction material that building trade is conventional, has setting rate fast, lightweight, adhesive strength advantages of higher；Be commonly used as construction material is semi-hydrated gypsum, owing to ardealite being dihydrate gypsum and the phosphate ion containing remnants mostly, and fluoride etc., use conventional gypsum calcining and processing method cannot be converted into the Gypsum Fibrosum that can be used for construction material.
Summary of the invention
Discarding in a large number for existing ardealite, pollute environment, the present invention proposes the processing method of a kind of ardealite, it is characterised in that: comprise the following steps: 1, ardealite is put into feeding device；2, Calx feeding system is used to add the quick lime of less than 5% to charging gear；3, calcining machine feed is dried by comprehensive feeding device to two grades；4, using two grades to dry calcining machine to calcine, end configuration flame furnace, bocca temperature is higher than 8000C；5, drying the employing classification outlet of calcining machine discharging opening for two grades, the first order is semi-hydrated gypsum outlet temperature interval 1300C-2300C, the second level is that anhydrous gypsum II outlet temperature interval is higher than 2300C；6, the Gypsum Fibrosum feeding stirring of two grades of drying calcining machine outlets is homogenized reduction conveyer device to be fully contacted with air by mixed gypsum；7, using conveyer device that defective Gypsum Fibrosum is transported to defective Gypsum Fibrosum storehouse by distributing valve, qualified Gypsum Fibrosum sends into qualified Gypsum Fibrosum semi-finished product storehouse；8, the Gypsum Fibrosum in defective Gypsum Fibrosum storehouse is re-fed into two grades of drying calcining machines calcine；Qualified Gypsum Fibrosum is sent into gypsum crystal thaumatropy device and carries out crystal transformation, the flat crystal structure of ardealite is smashed and changes into needle-shaped crystal structure；9, Gypsum Fibrosum qualified after crystal transformation is sent into finished product Gypsum Fibrosum storehouse；10, finished product Gypsum Fibrosum is sent into carloader；11, finished product Gypsum Fibrosum being sent into air-transport system, another branch sends into packer；12, above operation is all carried out by ardealite machining production line.
Described ardealite machining production line includes, Calx feed system, is dried feed system at the beginning of ardealite, flame furnace, dries calcining machine for two grades, and stirring homogenizes reduction conveyer device, qualified Gypsum Fibrosum semi-finished product storage tank, defective Gypsum Fibrosum storage tank, gypsum crystal thaumatropy device, elevator, carloader, packer, air-transport system, finished product Gypsum Fibrosum storage tank；Described Calx feed system is arranged on the front end of ardealite machining production line, including quick lime loading hopper, quick lime ribbon conveyer, lime crusher, pulsaire collector, pulverized limestone bucket elevator, pulverized limestone frequency conversion conveying worm；It is mounted in parallel with being dried feed system at the beginning of ardealite, connects with two grades of charging apertures drying calcining machine；It is dried feed system at the beginning of described ardealite and is arranged on two grades of drying calcining machine front ends, parallel with Calx feed system, connect with two grades of charging apertures drying calcining machines；Including ardealite loading hopper, forcing to break up blender, ardealite frequency conversion ribbon conveyer, Pneumatic three-way flap valve, ardealite wind send pre-drying device, cyclone separator group, star-like discharging device, conveying worm, pulsaire collector, granite with water film smoke of gunpowder desulfurizing dust-collector；Described flame furnace be arranged on two grades dry calcining machines enter jet-burner, flame furnace flame temperature be higher than 8000C；Two grades of described drying calcining machine front ends connect flame furnace, and rear end connects feeding device, and front end is provided with two discharging openings, and one is semi-hydrated gypsum discharging opening, is positioned at temperature range 1300C-2300C, one is anhydrous II Gypsum Fibrosum discharging opening, and anhydrous II Gypsum Fibrosum discharging opening is higher than 230 near flame furnace one end temperature range0C；It is respectively arranged with temperature sensor in two exits；Described stirring homogenizes reduction conveyer device and is arranged on by two grades of drying calcining machines, its import is dried calcining machine discharging opening with two grades and is connected, its outlet is connected with distributing valve, its distributing valve is gathered signal by being arranged on two grades of temperature sensors dried on calcining machine, control system certified products Gypsum Fibrosum semi-finished product storage tank or defective Gypsum Fibrosum storage tank are led in the direction of the valve port unlatching controlling distributing valve；Certified products Gypsum Fibrosum semi-finished product storage tank is connected with the certified products Gypsum Fibrosum semi-finished product conveyer device after distributing valve；Its delivery outlet is connected with gypsum crystal thaumatropy device；Described defective Gypsum Fibrosum storage tank is connected with the defective Gypsum Fibrosum conveyer device after distributing valve；Its discharging opening and two grades of feed conveying devices drying calcining machine connect；Described gypsum crystal thaumatropy device front end is connected by conveyer device with certified products Gypsum Fibrosum storage tank, and its discharge end is connected with the conveyer device towards finished product Gypsum Fibrosum storage tank；Described hoist installation is between the charging aperture and conveyer device of each storage tank；Described carloader is arranged on finished product Gypsum Fibrosum storage tank exit, is connected with packer or air-transport system；It is parallel with Pneumatic conveyer that described packer is arranged on the conveyer device end being connected with carloader；Described Pneumatic conveyer is connected with carloader output device, is mounted in parallel with packer.
Beneficial effect
Having a mind of the present invention is, it is possible to environmentally hazardous ardealite is transformed into useful construction material, twice laid.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ardealite production line of the present invention
1. Calx feed system, is 2. dried feed system, 3. flame furnace at the beginning of ardealite, 4. dry calcining machine for two grades, 5. stirring homogenizes reduction conveyer device, the most qualified Gypsum Fibrosum semi-finished product storage tank, the most defective Gypsum Fibrosum storage tank, 8. gypsum crystal thaumatropy device, 9. elevator, 10. carloader, 11. packers, 12. air-transport systems, 13. finished product Gypsum Fibrosum storage tanks.
Detailed description of the invention
In order to further illustrate technical scheme, illustrate embodiments of the present invention in conjunction with accompanying drawing；Such as Fig. 1, Calx feed system 1 is arranged on the front end of feeding system, including block Calx feed hopper, select the Calx ribbon conveyer conveying equipment as block Calx of commercially available TD75-500-5M, select the lime crusher of PCH400X300, as block Calx breaker, select MC-24 pulsaire collector as the loading head of powdered lime；Additionally select GX133-3.1M frequency conversion conveying worm as powdered lime conveyer, select TD100-14.2M bucket elevator as powdered lime elevator, it is equipped with powdered lime storage tank simultaneously, is so able to adapt to the powdery feed state of Calx and the feed state of block Calx simultaneously；It is arranged on two grades of charging aperture front ends drying calcining machine 4 by being dried feed system 2 at the beginning of ardealite, selects TD75-500-33M frequency conversion ribbon conveyer as ardealite conveyer device respectively, be arranged on after ardealite loading hopper；Blast pipe and two grades of outer layers drying calcining machine 4 of ardealite blast system are connected, this makes it possible to utilize two grades of waste heats drying calcining machine 4 that the charging of ardealite is preheated, reduce the moisture of ardealite；Be easy to conveying and collect powdery ardealite, it is to avoid due to the water content of ardealite excessive and to carrying, collect, the adhesion of the equipment such as pulverizing and the phenomenon that causes equipment not operate, saved heating energy source simultaneously；Select screw type duster as the material-gathering device of ardealite blast system, it is to avoid the problem that conventional sack cleaner can not persistently work because the gumminess of Gypsum Fibrosum adheres to occurs；Afterbody at blast system installs the SXC-II-4 type granite with water film dust remover capable of eliminating smoke and desulphation cleaner as blast system itself, it is to avoid produces environment and pollutes；This example is selected coal powder injection stove as flame furnace 3, it is also possible to select oil spout stove and air jet furnace；SHC-24180 calcining dehydrator machine is selected to dry calcining machine 4 as after improving as requested as two grades, enter the calcining through different temperatures gradient of two grades of ardealites drying calcining machine 4 and lime mixture, harmful substance in ardealite can be vapored away, simultaneously can be by the moisture removal of most 2 water stone cream, thus change into semi-hydrated gypsum and anhydrous gypsum, select the temperature range near flame furnace 3 one end higher than 230 at two grades of discharging openings drying calcining machine 40The position of C arranges the discharging opening outlet as anhydrous II type Gypsum Fibrosum, and away from the appropriate location of flame furnace, its temperature range is 1300C-2300The position of C, as the discharging opening of semi-hydrated gypsum, is respectively arranged with temperature sensor at the two exit region and feed zone, for gathering the temperature of region, thus has control system to drive the operative orientation of the functional parts such as distributing valve,；FU400-15M conveyer is selected to homogenize reduction conveyer device 5 as stirring, by the two of discharging opening kinds of Gypsum Fibrosum mixing, and be sufficiently mixed and the contact with moisture in air on this device, experiment proves just anhydrous II type Gypsum Fibrosum to be converted to semi-hydrated gypsum or the high strength gypsum can applied by construction material；Select 100 cubic metres of long-pending storage tanks as qualified Gypsum Fibrosum semi-finished product storage tank 6；Select the storage tank of 80 cubic metres of volumes as defective Gypsum Fibrosum storage tank 7, so-called defective Gypsum Fibrosum is two grades dries calcining machines 4 when just starting shooting, if being added without ardealite raw material, owing to the ejection temperature of flame furnace 3 is high, body of heater then can be caused to burn out, if adding ardealite, owing in calcining furnace, initial temperature is unstable, can not reach to calcine effect, therefore the Gypsum Fibrosum produced is by as defective Gypsum Fibrosum, and these are all controlled by the temperature sensor being arranged on two grades of two spout area and feed hole area drying calcining machine 4；Select the storage tank of 300 cubic metres of volumes as finished product storage tank 13；Between defective Gypsum Fibrosum storage tank 6 and qualified Gypsum Fibrosum semi-finished product storage tank and stirring conveying device 5, it is respectively arranged with conveyer device, and has distributing valve to control its opening direction to be directed towards defective work Gypsum Fibrosum storage tank 7 and be also directed towards qualified Gypsum Fibrosum semi-finished product storage tank 13；The ball mill selecting specification to be 1800X7000 millimeter is through being appropriately arranged with as gypsum crystal thaumatropy device 8, after using gypsum crystal thaumatropy device 8 that certified products Gypsum Fibrosum is carried out crystal structure conversion, the flat crystal structure of original ardealite is broken into needle-like, is beneficial in construction material, have better performance and intensity；Select NE30-30.7M bucket elevator as elevator 9；Select commercially available product car-loading machine as carloader 10；Select double mouth port type packer as packer 11；So ensure that the Gypsum Fibrosum of this production line output can either packing and storing, it is also possible to bulk shipment, also be able to connect the on-the-spot application that air-transport system 12 is gypsum product simultaneously；By above equipment erection sequence, being attached according to the method for the existing application of this equipment, just complete the enforcement of the present invention, the present embodiment is the one of numerous embodiment, does not represent all technical schemes of the present invention.
Claims (2)
1. the processing method of an ardealite, it is characterised in that: comprise the following steps: 1, ardealite is put into feeding device；2, Calx feeding system is used to add the quick lime of less than 5% to charging gear；3, calcining machine feed is dried by comprehensive feeding device to two grades；4, using two grades to dry calcining machine to calcine, end configuration flame furnace, bocca temperature is higher than 8000C；5, drying the employing classification outlet of calcining machine discharging opening for two grades, the first order is semi-hydrated gypsum outlet temperature interval 1300C-2300C, the second level is that anhydrous gypsum II outlet temperature interval is higher than 2300C；6, the Gypsum Fibrosum feeding stirring of two grades of drying calcining machine outlets is homogenized reduction conveyer device to be fully contacted with air by mixed gypsum；7, using conveyer device that defective Gypsum Fibrosum is transported to defective Gypsum Fibrosum storehouse by distributing valve, qualified Gypsum Fibrosum sends into qualified Gypsum Fibrosum semi-finished product storehouse；8, the Gypsum Fibrosum in defective Gypsum Fibrosum storehouse is re-fed into two grades of drying calcining machines calcine；Qualified Gypsum Fibrosum is sent into gypsum crystal thaumatropy device and carries out crystal transformation, the flat crystal structure of ardealite is smashed and changes into needle-shaped crystal structure；9, Gypsum Fibrosum qualified after crystal transformation is sent into finished product Gypsum Fibrosum storehouse；10, finished product Gypsum Fibrosum is sent into carloader；11, finished product Gypsum Fibrosum being sent into air-transport system, another branch sends into packer；12, above operation is all carried out by ardealite machining production line.
2.A kind ofArdealite machining production line includes, it is characterised in that: it is dried feed system at the beginning of Calx feed system, ardealite, flame furnace, dries calcining machine for two grades, and stirring homogenizes reduction conveyer device, qualified Gypsum Fibrosum semi-finished product storage tank, defective Gypsum Fibrosum storage tank, gypsum crystal thaumatropy device, elevator, carloader, packer, air-transport system, finished product Gypsum Fibrosum storage tank；Described Calx feed system is arranged on the front end of ardealite machining production line, including quick lime loading hopper, quick lime ribbon conveyer, lime crusher, pulsaire collector, pulverized limestone bucket elevator, pulverized limestone frequency conversion conveying worm；It is mounted in parallel with being dried feed system at the beginning of ardealite, connects with two grades of charging apertures drying calcining machine；It is dried feed system at the beginning of described ardealite and is arranged on two grades of drying calcining machine front ends, parallel with Calx feed system, connect with two grades of charging apertures drying calcining machines；Including ardealite loading hopper, forcing to break up blender, ardealite frequency conversion ribbon conveyer, Pneumatic three-way flap valve, ardealite wind send pre-drying device, cyclone separator group, star-like discharging device, conveying worm, pulsaire collector, granite with water film smoke of gunpowder desulfurizing dust-collector；Described flame furnace be arranged on two grades dry calcining machines enter jet-burner, flame furnace flame temperature be higher than 8000C；Two grades of described drying calcining machine front ends connect flame furnace, and rear end connects feeding device, and front end is provided with two discharging openings, and one is semi-hydrated gypsum discharging opening, is positioned at temperature range 1300C-2300C, one is anhydrous II Gypsum Fibrosum discharging opening, and anhydrous II Gypsum Fibrosum discharging opening is higher than 230 near flame furnace one end temperature range0C；It is respectively arranged with temperature sensor in two exits；Described stirring homogenizes reduction conveyer device and is arranged on by two grades of drying calcining machines, its import is dried calcining machine discharging opening with two grades and is connected, its outlet is connected with distributing valve, its distributing valve is gathered signal by being arranged on two grades of temperature sensors dried on calcining machine, control system certified products Gypsum Fibrosum semi-finished product storage tank or defective Gypsum Fibrosum storage tank are led in the direction of the valve port unlatching controlling distributing valve；Certified products Gypsum Fibrosum semi-finished product storage tank is connected with the certified products Gypsum Fibrosum semi-finished product conveyer device after distributing valve；Its delivery outlet is connected with gypsum crystal thaumatropy device；Described defective Gypsum Fibrosum storage tank is connected with the defective Gypsum Fibrosum conveyer device after distributing valve；Its discharging opening and two grades of feed conveying devices drying calcining machine connect；Described gypsum crystal thaumatropy device front end is connected by conveyer device with certified products Gypsum Fibrosum storage tank, and its discharge end is connected with the conveyer device towards finished product Gypsum Fibrosum storage tank；Described hoist installation is between the charging aperture and conveyer device of each storage tank；Described carloader is arranged on finished product Gypsum Fibrosum storage tank exit, is connected with packer or air-transport system；It is parallel with Pneumatic conveyer that described packer is arranged on the conveyer device end being connected with carloader；Described Pneumatic conveyer is connected with carloader output device, is mounted in parallel with packer.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734064A (en) * | 2016-11-29 | 2017-05-31 | 贵阳开磷化肥有限公司 | The ardealite innocent processing unit and its method of a kind of phosphoric acid by wet process output |
| CN106946482A (en) * | 2017-05-11 | 2017-07-14 | 郑州三迪建筑科技有限公司 | Industry by-product gypsum calcines flame furnace |
| CN106946483A (en) * | 2017-05-11 | 2017-07-14 | 郑州三迪建筑科技有限公司 | Industry by-product gypsum reduction apparatus |
| CN106977124A (en) * | 2017-05-27 | 2017-07-25 | 郑州三迪建筑科技有限公司 | A kind of modularized production equipment processed applied to ardealite |
| CN107140857A (en) * | 2017-05-27 | 2017-09-08 | 郑州三迪建筑科技有限公司 | A kind of method of modular applications ardealite |
| CN107217781A (en) * | 2017-07-20 | 2017-09-29 | 郑州三迪建筑科技有限公司 | A kind of hollow gypsum batten |
| CN107902931A (en) * | 2017-11-09 | 2018-04-13 | 南京吉普森节能科技有限公司 | The gypsum system of falling storehouse |
| CN108996534A (en) * | 2018-07-09 | 2018-12-14 | 铜陵菻科工业石膏综合利用有限责任公司 | A method of reducing industry by-product gypsum moisture content |
| CN109081620A (en) * | 2018-10-08 | 2018-12-25 | 郑州三迪建筑科技有限公司 | A kind of production method of high-temperature calcination industry by-product gypsum |
| CN110803878A (en) * | 2019-11-25 | 2020-02-18 | 江苏一夫科技股份有限公司 | Device and method for producing II type anhydrous gypsum by using phosphogypsum |
| CN110818302A (en) * | 2019-12-12 | 2020-02-21 | 郑州三迪建筑科技有限公司 | Production equipment for calcining building gypsum by phosphogypsum |
| CN111606588A (en) * | 2019-07-09 | 2020-09-01 | 中建材创新科技研究院有限公司 | Novel horizontal equipment capable of producing gypsum with different crystal water contents simultaneously |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734064A (en) * | 2016-11-29 | 2017-05-31 | 贵阳开磷化肥有限公司 | The ardealite innocent processing unit and its method of a kind of phosphoric acid by wet process output |
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| CN106946483B (en) * | 2017-05-11 | 2019-07-26 | 郑州三迪建筑科技有限公司 | Industry by-product gypsum reduction apparatus |
| CN106977124A (en) * | 2017-05-27 | 2017-07-25 | 郑州三迪建筑科技有限公司 | A kind of modularized production equipment processed applied to ardealite |
| CN107140857A (en) * | 2017-05-27 | 2017-09-08 | 郑州三迪建筑科技有限公司 | A kind of method of modular applications ardealite |
| CN107217781A (en) * | 2017-07-20 | 2017-09-29 | 郑州三迪建筑科技有限公司 | A kind of hollow gypsum batten |
| CN107902931A (en) * | 2017-11-09 | 2018-04-13 | 南京吉普森节能科技有限公司 | The gypsum system of falling storehouse |
| CN108996534A (en) * | 2018-07-09 | 2018-12-14 | 铜陵菻科工业石膏综合利用有限责任公司 | A method of reducing industry by-product gypsum moisture content |
| CN109081620A (en) * | 2018-10-08 | 2018-12-25 | 郑州三迪建筑科技有限公司 | A kind of production method of high-temperature calcination industry by-product gypsum |
| CN111606588A (en) * | 2019-07-09 | 2020-09-01 | 中建材创新科技研究院有限公司 | Novel horizontal equipment capable of producing gypsum with different crystal water contents simultaneously |
| CN110803878A (en) * | 2019-11-25 | 2020-02-18 | 江苏一夫科技股份有限公司 | Device and method for producing II type anhydrous gypsum by using phosphogypsum |
| CN110818302A (en) * | 2019-12-12 | 2020-02-21 | 郑州三迪建筑科技有限公司 | Production equipment for calcining building gypsum by phosphogypsum |
| CN110818302B (en) * | 2019-12-12 | 2021-10-22 | 郑州三迪建筑科技有限公司 | Production equipment for calcining building gypsum by phosphogypsum |
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