CN204779366U - Rotatory crystallization of alpha gesso - Google Patents
Rotatory crystallization of alpha gesso Download PDFInfo
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- CN204779366U CN204779366U CN201520452057.5U CN201520452057U CN204779366U CN 204779366 U CN204779366 U CN 204779366U CN 201520452057 U CN201520452057 U CN 201520452057U CN 204779366 U CN204779366 U CN 204779366U
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Abstract
The utility model discloses a rotatory crystallization of alpha gesso, including frame (5, 8), the kiln body (6), feed end (2), discharge end (9), exhaust gas collection device (10), heat supply room (3), heat exchange tube (4), import head (1), export head (11), power transmission unit (7). The kiln body (6) and power transmission unit (7) is installed in frame (5, 8), and it is rotatory in frame (5, 8) that power transmission unit (7) can drive the kiln body (6), seals the import head (1) and an airtight space is constituteed to export head (11) the then kiln body (6), and the kiln body (6) inner wall is fixed with round and communicating heat exchange tube (4) that have the lifting blade effect concurrently in heat supply room. This kind of rotation crystallization is static into dynamic through the change, including trades the increase of heat pipe heat exchange area, adopts multiple technologies means make full use of heat energy, the reduction energy consumption, collection prebake, evaporate that to press crystallization, product to dry as an organic whole, reduced the technology step, reduced equipment quantity, shortened the production time, reduced manufacturing cost, do not have external high -temperature steam or aqueous solution participation heat transfer and reaction, the aquation is for dihydrate gypsum once more to prevent the plaster of paris, and product quality is more stable.
Description
Technical field
The utility model relates to a kind of gypsum processing units, is specifically related to a kind of alpha type high-strength gypsum powder and rotates crystallization.
Background technology
Alpha type high-strength gypsum is also referred to as alpha semi-hydrated gypsum, is called for short α gypsum.The fields such as mould, precision casting, high-grade construction decoration material are widely used in because of many advantages such as its high strength, high-density, high rigidity, high fluidities, at present, the preparation apparatus that α gypsum is conventional mainly contains two classes: horizontal, vertical type steaming platen press reactor and liquid phase method reactor, two kind equipments are all fixed apparatuses.
Horizontal, vertical type steaming platen press reactor mainly adopts the block plaster of paris to be raw material, is loaded by raw material after in still and passes into saturated steam steam pressure 7-12 hour, then dries and produce α gypsum in 10-24 hour.This processing mode, life cycle of the product is long, and energy consumption is huge.And this kind equipment can't directly apply to the processing of the industry by-product gypsums such as pulverous plaster of paris or desulfurated plaster.
Abroad for when adopting autoclave method to produce high-strength desulfurated plaster with desulfurated plaster, first desulfurated plaster to be squeezed into bulk, and then apply traditional autoclave method technique; The loaded down with trivial details process procedure that this technique not only increases briquetting---steam pressure again---pulverizes again, also further increases energy consumption.
Autoclave method is ripe, reliable as the traditional method of producing high strength gypsum, but the production cycle is long, energy consumption is high, and it mainly designs for autoclave method processes plaster of paris lumpy material, effectively cannot be applied to the tiny industry by-product gypsum of particle.China's plaster of paris resource mainly concentrates on central and west regions, and cost of winning is high, and the phenomenon destroying ecotope and waste resource is serious.Country had started the random mining limiting plaster of paris resource in recent years, and in Shandong, Hebei, the conventional gypsum mining area such as Hubei close down a collection of ore deposit point not meeting industry policy.Therefore can say, the proportion of the following plaster of paris shared by gypsum is produced will be more and more less.
Liquid phase method produces high strength gypsum, and major equipment is reactor, generally includes normal-pressure reaction kettle and reactor with pressure two class.Powder gypsum raw material adds in the aqueous solution in two class reactors, through effect and the heating crystalline reaction of admixture, can generate α gypsum.But because need be separated with the aqueous solution and dry, just need separately to establish Moisture separation device and drying unit.Whole process need keep constant temp prevent semi-hydrated gypsum again aquation be dihydrate gypsum.This technique, facility investment is large, and process is complicated, flow process is tediously long, and unstable product quality, the energy consumption of product and unit cost are the highest in all processing methodes.
Liquid phase method is because of its numerous and diverse technology and equipment, and the operating requirement of harshness causes the method still to rest on the experimental phase.Be applied to suitability for industrialized production even if even, also because constant product quality is poor, high in cost of production reason finally eliminate by market.So liquid phase method present stage also cannot really realize competitive commercial application.
Utility model content
The purpose of this utility model is just the defect overcoming above-mentioned prior art, a kind of processing step and number of devices, the shortening production time, energy-saving and cost-reducing of reducing is provided, and can a large amount of, efficiency utilization powder gypsum, especially the rotation crystallization of industry by-product gypsum production high-quality α gypsum.
In order to achieve the above object, technical solution of the present utility model is: a kind of alpha gypsum powder rotates crystallization, comprises frame, kiln body, heat transfer tube, import end socket, outlet end socket, supplies hot cell, power-driven gear, feed end, discharge end, tail gas collecting device; Described kiln body and power-driven gear are arranged in frame, described power-driven gear can drive kiln body to rotate in frame, closed described import end socket and described outlet end socket then described kiln body form an enclosed space, the heat transfer tube having material delivering plate effect concurrently that described kiln body inwall is fixed with a circle and communicates for hot cell.
A kind of optimal technical scheme, the circle heat transfer tube that described kiln body inwall is fixing, its cross section meter triangulation, the interior sky that this heat transfer tube trilateral is formed communicates with for hot cell, tail gas collecting device, leg-of-mutton outside surface contacts with gypsum material, increase cooling heat source face, trilateral the top of the horn protrudes to Yao Ti center simultaneously, trilateral heat transfer tube does not stop to rotate with kiln body, stir gypsum material, gypsum material is contacted with trilateral heat transfer tube, and substantially increase heat-transfer surface and the heat exchanger meeting of material, heat energy is fully used.This heat transfer tube can increase the heat transfer area of thermal source and gypsum material, can play again the effect of stirring the similar material delivering plate of material, to increase the heat exchanger meeting of material, material is heated evenly.
A kind of optimal technical scheme, the circle heat transfer tube that described kiln body inwall is fixing, its cross section is designed to cognate shape.
A kind of optimal technical scheme, described import end socket is movable is connected to kiln body feed end, opens import end socket, gypsum material can be sent into kiln body hollow in; Described outlet end socket is movable is connected to kiln body discharge end, opens outlet end socket, the gypsum processed can be reclaimed; Closed described import end socket and described outlet end socket then described kiln body form airtight space.
A kind of optimal technical scheme, described device for recovering tail gas is arranged on the afterbody of discharge end and kiln body, and this tail gas collecting device communicates with for hot cell and the heat transfer tube be fixed on described kiln body inwall, heat source exhaust can be discharged.
During production, first opening device transmission mechanism, makes rotation crystallization rotate, and then opens heat source system heat supply, is added in kiln body by industry by-product gypsum simultaneously from the import end socket opened.Material can be imported heat transfer tube place by the rotation of kiln body, and material starts intensification of being heated.Until after reaching design feeding quantity, stop reinforced, close import and export end socket, now kiln body inside forms closed environment.
Along with the continuous heating of thermal source, while kiln body rotates, heat continues stir material in kiln body and heat by heat transfer tube, material thermally equivalent is heated up, in the process heated up, free-water constantly evaporates, when temperature in kiln body continues to raise, gypsum material starts to slough partial crystallization water contained in molecule.The water vapour that the free-water evaporated in gypsum material and crystal water are formed makes to form certain pressure in kiln body gradually, and constantly increases along with the amount of the water vapour evaporated, and pressure and temperature also constantly raises.After temperature, pressure are elevated to technique preset value, keep this temperature, constant pressure, and continue uniform stirring steam pressure for some time, until gypsum material sloughs free-water and 3/2 crystal water completely, become semi-hydrated gypsum crystal.Now dehydration reaction completes, and starts pressure release gradually and discharges water vapour, and to dry product at a certain temperature, until after product becomes dry semi-hydrated gypsum completely, open outlet end socket and release material.So far the transformation of gypsum material from raw material to product is completed.
Advantage of the present utility model: alpha gypsum powder rotates crystallization, integrate prebake, steam pressure crystallization and product to dry, in production, import and export end socket keeps airtight, whole equipment rotates under the drive of power-driven gear, gypsum material uniform stirring in drive equipment, the heat exchange of material and thermal source is more abundant.Heat continues to heat gypsum material in kiln body by the heat exchange pipeline be connected with for hot cell, the design of heat transfer tube had both added the contact area of material and thermal source, moved by the not stall of heat transfer tube together with kiln body again, ceaselessly material is stirred as material delivering plate, add the heat exchange frequency of material, material is heated more even, heat utilization rate significantly improves.In steam pressure crystallisation process, this equipment participates in heat exchange and reaction without the need to external high temperature steam or the aqueous solution, utilize material self contained humidity to be formed in airtight heat-processed and stablize saturated vapor environment, ensure that the reaction of dihydrate gypsum sufficient crystallising generates the high-strength semi-hydrated gypsum of α type.Technological process becomes dynamic rotary steam pressure from the static steam pressure of legacy equipment, terra alba mixing and stirring, sufficient reacting, comprises prebake, steam pressure crystallization, product oven dry, and the production time of product shortens to 3-4 hour.Because not importing external source, need the free-water of oven dry little, energy consumption also reduces greatly.Prebake, steam pressure crystallization and product are dried and are all completed in same equipment, avoid the impact of multiple operation, ensure that the high-quality of quality product, stablize.Its advantage can be summarized as in sum: 1, passing through to become static state is dynamic rotary crystallization, adds that heat transfer tube heat interchanging area increases, and adopts multiple technologies means to make full use of heat energy, reduces energy consumption; 2, integrate prebake, steam pressure crystallization, product oven dry, decrease processing step, decrease number of devices, shorten the production time, reduce production cost; 3, participate in heat exchange and reaction without external high temperature steam or the aqueous solution, prevent semi-hydrated gypsum again aquation be dihydrate gypsum, quality product is more stable.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch that the utility model alpha gypsum powder rotates crystallization.
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2, a kind of alpha gypsum powder rotates crystallization, comprises frame (5,8), kiln body 6, heat transfer tube 4, import end socket 1, outlet end socket 11, feed end 2, discharge end 9, supplies hot cell 3, power-driven gear 7, tail gas collecting device 10.Kiln body 6 inwall is fixed with the heat transfer tube 4 that a circle cross section is hollow triangle, and it is hollow cognate shape that heat transfer tube 4 can also be designed to cross section, to be designed with for hot cell 3 at feed end 2 position, and hollow triangle heat transfer tube 4 communicates with confession hot cell 3.Kiln body 6 is arranged in frame (5,8), can rotate under power-driven gear 7 drives.Be designed with tail gas collecting device 10 at discharge end 9 position, this tail gas collecting device 10 communicates with heat transfer tube 4.Be connected with import end socket 1 the end face of kiln body 6 feed end 2 is movable, be connected with outlet end socket 11 the end face of kiln body 6 discharge end 9 is movable, open import end socket 1, material can be sent in kiln body 6; Open outlet end socket 11, the recyclable discharging of the product processed; Close import end socket 1 and outlet end socket 11, kiln body 6 forms an airtight space.
Claims (5)
1. an alpha gypsum powder rotates crystallization, comprise frame (5,8), kiln body (6), feed end (2), discharge end (9), tail gas collecting device (10), for hot cell (3), it is characterized in that: it also comprise heat transfer tube (4), import end socket (1), outlet end socket (11), power-driven gear (7); Described kiln body (6) and power-driven gear (7) are arranged on frame (5,8) on, described power-driven gear (7) can drive kiln body (6) in frame (5,8) upper rotation, closed described import end socket (1) and described outlet end socket (11) then described kiln body (6) form an enclosed space, the heat transfer tube (4) having material delivering plate effect concurrently that described kiln body (6) inwall is fixed with a circle and communicates for hot cell.
2. alpha gypsum powder according to claim 1 rotates crystallization, it is characterized in that: circle heat transfer tube (4) that described kiln body (6) inwall is fixing, its cross section is designed to trilateral, the interior sky that this heat transfer tube (4) trilateral is formed communicates with for hot cell (3), tail gas collecting device (10), leg-of-mutton outside surface contacts with gypsum material, trilateral the top of the horn protrudes to Yao Ti center simultaneously, and this heat transfer tube (4) can not stop to rotate with kiln body (6).
3. alpha gypsum powder according to claim 1 rotates crystallization, it is characterized in that: circle heat transfer tube (4) that described kiln body (6) inwall is fixing, and its cross section is designed to cognate shape.
4. the alpha gypsum powder according to claim 1,2 or 3 rotates crystallization, it is characterized in that: described import end socket (1) is movable is connected to kiln body (6) feed end (2), opens import end socket (1), and this kiln body (6) termination is opening for feed; Described outlet end socket (11) is movable is connected to kiln body (6) discharge end (9), and open outlet end socket (11), this kiln body (6) termination is discharge port; Closed described import end socket (1) and described outlet end socket (11) then described kiln body (6) form airtight space.
5. alpha gypsum powder according to claim 2 rotates crystallization, it is characterized in that: described tail gas collecting device (10) is arranged on discharge end (9) the i.e. afterbody of kiln body, this tail gas collecting device (10) communicates for hot cell (3) and described heat transfer tube (4) with described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520452057.5U CN204779366U (en) | 2015-06-29 | 2015-06-29 | Rotatory crystallization of alpha gesso |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520452057.5U CN204779366U (en) | 2015-06-29 | 2015-06-29 | Rotatory crystallization of alpha gesso |
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| CN204779366U true CN204779366U (en) | 2015-11-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944816A (en) * | 2015-06-29 | 2015-09-30 | 湖南昌迅科技环保股份有限公司 | Rotary crystallization kiln for alpha gypsum powder |
| CN105800978A (en) * | 2016-06-08 | 2016-07-27 | 湖南昌迅科技环保股份有限公司 | Rotary alpha gypsum powder crystallization kiln |
| CN107935425A (en) * | 2017-11-14 | 2018-04-20 | 湖南昌迅科技环保股份有限公司 | One kind rotation crystallization |
| CN113521792A (en) * | 2021-07-15 | 2021-10-22 | 绵阳三香汇生物科技有限公司 | Static crystallization purification device |
-
2015
- 2015-06-29 CN CN201520452057.5U patent/CN204779366U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944816A (en) * | 2015-06-29 | 2015-09-30 | 湖南昌迅科技环保股份有限公司 | Rotary crystallization kiln for alpha gypsum powder |
| CN104944816B (en) * | 2015-06-29 | 2017-01-25 | 湖南昌迅科技环保股份有限公司 | Rotary crystallization kiln for alpha gypsum powder |
| CN105800978A (en) * | 2016-06-08 | 2016-07-27 | 湖南昌迅科技环保股份有限公司 | Rotary alpha gypsum powder crystallization kiln |
| CN105800978B (en) * | 2016-06-08 | 2017-09-01 | 湖南昌迅科技环保股份有限公司 | A kind of alpha gypsum powder rotates crystallization |
| CN107935425A (en) * | 2017-11-14 | 2018-04-20 | 湖南昌迅科技环保股份有限公司 | One kind rotation crystallization |
| CN113521792A (en) * | 2021-07-15 | 2021-10-22 | 绵阳三香汇生物科技有限公司 | Static crystallization purification device |
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