CN104355772A - Preparation method and preparation device of compound fertilizer - Google Patents
Preparation method and preparation device of compound fertilizer Download PDFInfo
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- CN104355772A CN104355772A CN201410640747.3A CN201410640747A CN104355772A CN 104355772 A CN104355772 A CN 104355772A CN 201410640747 A CN201410640747 A CN 201410640747A CN 104355772 A CN104355772 A CN 104355772A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
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Abstract
The invention discloses a preparation method and a preparation device of a compound fertilizer. The preparation method of the compound fertilizer comprises the following steps: A, feeding, namely respectively adding urea, ammonium sulfate, ammonium hydrogen carbonate, monoammonium phosphate, potassium sulfate and calcium superphosphate into a stirrer in sequence and mixing; B, crushing, namely crushing materials by virtue of crushers by adopting a two-step process of rough crushing and fine crushing; C, pelletizing, namely pelletizing the materials in a mixing and pelletizing region and polishing particles in a particle polishing region; D, drying, namely drying by virtue of a dryer, wherein the drying process is a secondary pelletizing process; E, cooling, wherein the inner part of a cooler is divided into three parts, and the materials are introduced into a dust separating region after radiating to remove dust in the particles; F, sieving; G, polishing; and H, inspecting. The preparation device further comprises a rotary drum pelletizer, the dryer and the cooler. The preparation method and the preparation device of the compound fertilizer disclosed by the invention have the advantages that manufacturing is simple, cost is low, pelletizing effect is good, the energy consumption during drying of compound fertilizer particles is effectively reduced, the cooling effect of the dried particles is improved, and the pollution of the dust of the compound fertilizer on the environment is reduced.
Description
Technical field
The present invention relates to technical field of agricultural fertilizers, more specifically relate to a kind of Chemical Mixed Fertilizer preparation method, also relate to a kind of device of Chemical Mixed Fertilizer simultaneously, be suitable for Chemical Mixed Fertilizer fertilizer plant and produce inorganic composite mixed fertilizer, compound organic and inorganic fertilizer and organic-inorganic biological compound fertilizer.
Background technology
Fertilizer is the indispensable important material used for agriculture of higher yield of crops stable yields, the production of chemical fertilizer and use for raising crop yield, ensure that national food production and safety have important effect.But due to chemical fertilizer of simple substance as urea, phosphate fertilizer and potash fertilizer are wasted time and energy when using respectively, and in the usage ratio of azophoska, peasant is difficult to control, and causes some Fertilizer applications excessive, not only causes the waste of fertilizer, and cause environment eutrophication.Because Chemical Mixed Fertilizer prepares the nutrient contents such as N P and K according to various plant growth demand, how many some enterprises can also prepare the nutrient contents such as N P and K according to Soil Nutrients in Farmland content, Chemical Mixed Fertilizer is not only easy to use, and the crop utilization rate of the various fertilizer nutrient such as N P and K is high, therefore, Chemical Mixed Fertilizer has become dark fertilizer type of welcoming by vast farmers in our agriculture production current.But the production process of Chemical Mixed Fertilizer is comparatively complicated, particularly exist power consumption high, binding agent, product need be added easily to lump and in production process, dust causes the problems such as environmental pollution, be the insoluble limiting factor of compound fertilizer enterprises always.
In the manufacture method of Chemical Mixed Fertilizer, Chinese invention patent CN 100357230C (2007) announces a kind of compound organic and inorganic fertilizer and to reunite-wrap up no drying prilling process, the method utilizes the part material hydration reaction be added in material, part free-water in granulated fertilizer being changed into crystal water, the water content of fertile intragranular can be down to less than 10% without the need to drying; But the raw materials such as the semi-hydrated gypsum added and cement have a certain impact to compound organic and inorganic fertilizer.Chinese invention patent CN 10250367 B (2014) discloses a kind of biologic organic, inorganic three-in-one compound granular fertilizer production method and equipment, the method adopts segmentation comminution granulation, utilize the bio-fertilizer raw material after fermentation by adding biological bacteria after model granulator granulation, biological organic composite granulated fertilizer made by dressing, utilizes the fertile raw material of fermentation artifact to mix the organo-mineral complexing granular fertilizer made with inorganic fertilizer simultaneously; Then 2 kinds of composite particles are mixed in proportion, but the method is comparatively complicated.CN 102249818 B (2012) announces a kind of organic-inorganic controlled-release fertilizer special for isatidis root of material and Synthesis and applications thereof, mainly have employed sulfur coating urea, sulphur adds high molecular polymer coated carbamide, 5% humic acid membrane wrapping urea and 5% reclaims thermoplastic resins coated carbamide Substitute For Partial urea and prepare slow-release compound fertilizer, although this Chemical Mixed Fertilizer can slow down the release of blood urea nitrogen, add preparation cost.CN 101298396 B (2011) discloses a kind of biological organic inorganic composite fertiliser and preparation method thereof, have employed 2 furnace drying methods after granulation, namely by making particle water content be reduced to 5%-7% from 10%-15% after first drying, again by making particle water content be reduced to 1%-2% after secondary drying, this method effectively reduces particle water content, but method is complicated, consume energy high, cost is high.CN 1245358C (2006) discloses a kind of compound organic and inorganic fertilizer adhesive for granulating and production method thereof, adopt binding agent prepared by starch, hydrogen peroxide, highly basic, molysite, borax, urea and potassium dihydrogen phosphate aqueous solution, the method is complicated, cost is higher, and highly basic has corrodibility to equipment simultaneously.CN 102503627 B (2014) discloses a kind of biologic organic, inorganic three-in-one compound granular fertilizer production method and equipment, low temperature (30-50 DEG C) freeze-drying is adopted to carry out drying to the particle after granulation, particle water content can be reduced to less than 10%, but its drying effect not fine.In addition, produce in the equipment of Chemical Mixed Fertilizer at present, because tablets press design is reasonable not, not only cause granulation efficiency low, and easily cause tablets press steel cylinders by the corrosion of Chemical Mixed Fertilizer powder; Due to the design defect of dryer, cause material to advance slow, material stirs weak effect in cylindrical shell, in addition the weak effect of heating plant and the problem such as dust-settling compartment is few, and drying course is consumed energy high, the dust of generation causes environmental pollution; Due to the design defect of cooler, the problems such as cause material to advance slow, material turning weak effect, cooling performance is poor, the dust removing effects difference of process of cooling.
Therefore, about setting up, a set of power consumption is low, granulation good, cool Chemical Mixed Fertilizer preparation method fast, low in the pollution of the environment and equipment thereof, all has important effect and application prospect widely for production inorganic composite mixed fertilizer, compound organic and inorganic fertilizer and biological organic-inorganic compound fertilizer.
Summary of the invention
The object of the invention is the preparation method that there are provided a kind of Chemical Mixed Fertilizer, the method equipment is simple, cost is low, effective, practicality wide, be extensively suitable for applying during inorganic composite mixed fertilizer, compound organic and inorganic fertilizer and biological organic-inorganic compound fertilizer are produced.
Another object of object of the present invention is the device that there are provided a kind of Chemical Mixed Fertilizer, this device makes simple, cost is low, when adopting this device fabrication Chemical Mixed Fertilizer, granulation outcome is good, effectively can decrease energy consumption when compound fertilizer granule is dried, improve the cooling performance of drying particle, decrease the dust of production of compound fertilizer process generation to the pollution of environment.
In order to realize above-mentioned object, the present invention adopts following technical measures:
A kind of Chemical Mixed Fertilizer active constituent content is 40% (nitrogen content 22%, phosphorus pentoxide content 8%, being oxidized two potassium contents is 10%), with the cubage of weight percent, be made up of following ingredients: urea [carboxamide, CO (NH2) 2] 32%-35%, ammonium sulfate 20%-25%, bicarbonate of ammonia 3%-5%, monoammonium phosphate 3%-5%, potassium sulfate or Repone K 15%-20%, calcium superphosphate 12%-18%, anti-caking liquid TH-III 0.1%-1%, anti-hard caking agent TH-I 0.1%-1%.
A preparation method for Chemical Mixed Fertilizer, the steps include:
(1) feed intake: by specification of quality, respectively urea, ammonium sulfate, bicarbonate of ammonia, monoammonium phosphate, potassium sulfate or Repone K, calcium superphosphate are put in the type agitator of U260-50 by electronic measurement sequentially, carry out fully mixing and, after 0.5-4 minutes, by mixture control, material is sent into next program.
(2) pulverize: for meeting the requirement of granulation to material, breaking method adopts meal and fine powder two-step approach, first material is passed through T800-45 type vertical hilted broadsword single-deck pulverizer meal, material particular diameter is made to be less than 20 orders, again by T900-45 type vertical double-pole double plate pulverizer fine powder, material particular diameter is made to be less than 40 orders.
(3) granulation: granulation adopts 8M-15 type rotary drum granulator, and by blocking material ring, the cylindrical shell of rotary drum granulator is divided into Liang Ge district, proparea is mixing granulation district, and back zone is particle polishing district.At mixing granulation district front end material by spraying and importing the humidity (water content is 15%-18%) that steam makes to reach needed for granulation.Material after the granulation of mixing granulation district, then enters particle polishing district and carries out polishing to particle.Material obtains the particle that particle diameter is less than 6 millimeters after first time granulation.
(4) dry: oven dry is second time granulation process, is again drying process.Adopt M22-2.0-30 type dryer to dry, dryer is divided into 4 districts: comprise material and advance preheating zone, granulation zone, drying zone, granularity solidification polishing discharge zone.Material carries out preheating (temperature controls at 150-220 DEG C) in propelling preheating zone, then enters granulation zone granulation again, then enters drying zone drying, to be finally cured particle in granularity solidification polishing discharge zone and polishing and discharging.Drying blower fan adopts 72-4-6C type jetting type stainless steel blower fan directly to provide hot blast (temperature controls at 150-220 DEG C).Install top installation F4-72-10A type vacuum fan at dryer discharge port and carry out air draft, the wind of discharge is discharge after 6-15 cubic metres of dust-settling compartment dedustings through 3 volumes again.Generally, inlet temperature controls at 150-220 DEG C, and temperature out controls at 50-80 DEG C, and discharge port material water content controls 5%-8%.
(5) cool: adopt M15-1.5-11 type cooler to cool, in cooler, be divided into 3 districts: comprise material and advance district, radiating area, dust separation district.After particulate matter advances district by material, enter radiating area heat radiation, exhaust duct is installed in cooling zone be connected with F4-72-8A type vacuum fan, the water vapor produced during to discharge cooling and dust, in the wind of discharging, dust is discharged after falling dust room's dedusting that 3 volumes are 6-12 cubic metres again, prevents dust to air environmental pollution.Material, by entering dust separation district again after heat radiation, removes the dust in particulate matter further.
(6) sub-sieve: screening system arranges three cover separating screen devices, from the particle that the material of cooling system conveying is greater than 4.75 millimeters through M1.5-6 type screen-dividing machine removing particle diameter, again by the particle that M1.4-6 type screen-dividing machine removing particle diameter is less than 2.0 millimeters, then obtain by M1.4-5 type essence screen-dividing machine the semi-finished granules that particle diameter is 2.0-4.75 millimeters.The pellet transportation dividing the particle diameter sifted out to be greater than 4.75 millimeters is pulverized in pulverizer again, and the pellet transportation dividing the particle diameter sifted out to be less than 2.0 millimeters carries out granulation again in tablets press.
(7) polishing: adopt M1.2-8-7.5 type polishing machine improved to carry out polishing, in polishing machine barrel, installed thickness is that the polymer plastic flitch of 6 mm thick prevents materials from bonding in cylinder plate.The stainless steel injection spray pipe that diameter is 15 millimeters is installed at polishing machine feeding mouth place, for spraying into anti-caking liquid TH-III (production of From Zhongxiang Hubei Chen Hui Chemical Co., Ltd.), installing diameter at polishing machine discharge port is that 108 millimeters of weldless steel tubes are for spraying into anti-hard caking agent TH-I (production of From Zhongxiang Hubei Chen Hui Chemical Co., Ltd.).
(8) check: visual inspection is carried out in sampling, and carry out the analysis of effective component such as the nitrogen of fertilizer, phosphorus and potassium, obtain nitrogen-phosphorus-potassium compound fertilizer.
(9) pack: adopt automatic bagging metering, and carry out automated sewing bag, obtain nitrogen-phosphorus-potassium compound fertilizer finished product.
Present invention also offers the using method of nitrogen-phosphorus-potassium compound fertilizer: used by the amount of application of nitrogen-phosphorus-potassium compound fertilizer by 360-400 kilograms/hectares, rice field can be used as base manure and spreads fertilizer over the fields before arable land, can carry out spreading fertilizer over the fields or spreading manuer in holes or row replacement in nonirrigated farmland.
A kind of 8M-15 type rotary drum granulator, it is by cylindrical shell, mixing granulation district, shelves material ring, overflow groove, particle polishing district, opening for feed, discharge port, polymer plastic flitch, atomization water pipe, the two mouth steam spray device of single tube, electric motor and gear composition, apart from 2-3 meters, opening for feed top welding one grade material ring in steel cylinders, shelves material ring is be 1.4-1.5 meters with the external diameter that No. 45 steel plates are made, internal diameter is 1.2-1.3 meters, and on shelves material ring equidistant arrange 3 long 2-3 centimetres, the overflow groove of wide 1-2 centimetres, namely angle formed by adjacent two overflow groove central points and shelves material ring circle center line connecting is 120 degree.Granulation efficiency of the present invention is made than the tablets press raising 7.1% not adding blocking material ring owing to the addition of blocking material ring.Cylindrical shell is divided into Liang Ge district by the blocking material ring be welded on cylindrical shell, is mixing granulation district near opening for feed one end, and is particle polishing district near discharge port one end, and mixing granulation district is connected by shelves material ring with particle polishing district.2 pieces of semicircle polymer plastic flitch of pad 2-8 mm thick on the steel barrel in mixing granulation district and particle polishing district, and double round plastic plate interface carries out thermo-welding, material not only can be prevented the corrosion of steel cylinders, granulation rate and the granulation quality of Chemical Mixed Fertilizer can be improved simultaneously.In opening for feed top, 5-60 centimeters distance barrels 5-15 centimetres install diameter is the two mouth steam spray device of single tube that 50 millimeters of stainless steel tubes are made, and during granulation, saturation steam has a small amount of humidification to material while providing heat; The atomization water pipe that the stainless steel tube that 5-60 centimeters distance barrel 5-15 centimeters also install 1 diameter 32 millimeters in opening for feed top is simultaneously made, sprays to material during granulation and makes it reach required humidity.Steam spray device 20 and atomization water pipe are fixed on independent support, are not connected with cylindrical shell.Cylindrical shell is connected with motor by 2 gears, by motor by 2 gear driven barrel body rotations.Opening for feed is by being highly that 5-20 centimetres of circular arcs No. 45 Plate Weldings are connected with cylindrical shell, and discharge port is also by being highly that 5-20 centimetres of circular arcs No. 45 Plate Weldings are connected with cylindrical shell.Cylindrical shell is supported by support.Motor is fixed by support.
A kind of M22-2.0-30 type dryer, it advances preheating zone and steel plate thereof by cylindrical shell, opening for feed, discharge port, electric motor, gear, material, granulation zone and steel plate thereof, drying zone and steel plate thereof, granularity solidify polishing area, jetting type stainless steel blower fan, vacuum fan, dust-settling compartment form.Steel cylinders front end is opening for feed, opening for feed by height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell, opening for feed center is provided with 72-4-6C type jetting type stainless steel blower fan and directly provides hot blast, jetting type stainless steel blower fan is fixed by independent support, be not connected with cylindrical shell, just hot air duct road stretches into 3-5 centimeters in opening for feed.In opening for feed to cylindrical shell, 1.6 meters is material propelling district, material advance district barrel is welded with thick 12 millimeters, height 180-220 millimeters, length 1.4-1.6 meters steel plate totally 8 pieces, the central point of adjacent two block plates and the angle of cylindrical shell circle center line connecting are 45 degree (namely 8 block plates are uniformly distributed and are welded on cylindrical shell), the steel plate of welding longitudinally with drum shaft to becoming 30 degree of angles.Granulation zone and material advance district to be connected, granulation zone length is 2.8 meters, the steel plate totally 6 pieces of throat thickness 12 millimeters, height 160-200 millimeters, length 2.6 meters on the barrel wall of granulation zone, adjacent two block plate central points and cylindrical shell circle center line connecting angle are 60 degree (namely 6 block plates are uniformly distributed and are welded on cylindrical shell).Drying zone is connected with granulation zone, drying zone length is 15.6 meters, drying zone barrel is welded with the steel plate totally 105 pieces of thickness 12 millimeters, height 23 centimetres, length 70 centimetres, steel plate is divided into 15 circles (distance between two adjacent rings steel plate about 33.3 centimetres), often enclose 7 pieces, in same circle, the angle of adjacent two block plate central points and cylindrical shell circle center line connecting is 51.4 degree, and the intersection dislocation welding of two adjacent rings light plate, advantageously in material tumble dried time dry.Granularity solidification polishing area is connected with drying zone, and its rear end is discharge port, discharge port by highly 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell.F4-72-10A type vacuum fan is installed above discharge port, the induced exhaust of vacuum fan one end puts in 10-20 centimeters in discharge port, vacuum fan and induced exhaust are fixed by support, be not connected with discharge port, the other end of vacuum fan is connected by the dust-settling compartment that pipeline and 3 volumes are 6-15 cubic metres, the air that vacuum fan is extracted out and dust by discharging after dust-settling compartment depositing dust, thus reduce the pollution of dust to air and environment.Cylindrical shell is connected with electric motor by gear, and electric motor is by gear driven barrel body rotation.Cylindrical shell is supported by support, and electric motor is fixed by support.
A kind of M15-1.5-11 type cooler, it advances district and steel plate, radiating area and steel plate thereof, cooling zone, vacuum fan and dust-settling compartment to form by cylindrical shell, opening for feed, discharge port, electric motor, gear, material.Steel cylinders front end is opening for feed, and opening for feed place uses height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell.Be material propelling district 33 within the scope of 1.2 meters in opening for feed to cylindrical shell, material advances the steel plate totally 8 pieces barrel wall in district being welded with thickness 12 millimeters, high 140-150 millimeters, length 1.2 meters, the angle 45 degree (namely 8 block plates are uniformly distributed and are welded on barrel wall) of steel plate central point and cylindrical shell circle center line connecting, steel plate is oblique welded and installed, steel plate longitudinally with drum shaft to becoming 30 degree of angles.Radiating area and material advance district to be connected, the heat radiation head of district 12 meters, the barrel wall of radiating area is welded with the steel plate totally 48 pieces of 12 mm thick, length 700-800 centimetres, high 20-24 centimetres, steel plate is divided into 8 circles (distance between two adjacent rings steel plate is 50-60 centimetres), often enclose 6 pieces, in same circle, the angle of adjacent two block plate central points and cylindrical shell circle center line connecting is 60 degree (namely 6 block plates are uniformly distributed and are welded on cylindrical shell), the dislocation of two adjacent rings light plate intersection is welded on barrel, is conducive to particle and rotates heat radiation.Cooling zone is connected with radiating area, and the cooling head of district 2.8 meters is discharge port at cooling zone end, and discharge outlet uses height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell.F4-72-10A type vacuum fan is installed above discharge port, the induced exhaust of vacuum fan one end puts in 10-20 centimeters in discharge port, vacuum fan and induced exhaust are fixed by support, be not connected with discharge port, the other end of vacuum fan is connected by the dust-settling compartment that pipeline and 3 volumes are 6-15 cubic metres, the water vapor that vacuum fan is extracted out and dust by discharging after dust-settling compartment depositing dust, thus reduce the pollution to air and environment of dust in process of cooling.Cylindrical shell is connected with electric motor by gear, and electric motor is by gear driven barrel body rotation.Cylindrical shell is supported by support, and electric motor is fixed by support.
The present invention compared with prior art, has the following advantages and effect:
1. Chemical Mixed Fertilizer preparation method of the present invention and equipment, method is simple to operate, easy to use, and device fabrication is easy, and cost is few, and input cost is low, and production of compound fertilizer is effective;
2. due to the chemical property that utilizes different inorganic fertilizer and the mechanism of action reacted to each other thereof, thus do not need to add binding agent and can obtain good particle at granulation process; Reduce the cost of granulation in production process;
3. owing to being lined with polymer plastic flitch in tablets press, material can be prevented the corrosion of steel cylinders, simultaneously owing to the addition of blocking material ring, the granulation rate of Chemical Mixed Fertilizer can be made to bring up to 99.5% due to 92.4% of the past, and granulation rate improves 7.1%;
4. pair dryer inner structure is transformed, improve particle drying efficiency, the energy consumption of drying course is reduced, jetting type stainless steel blower fan of simultaneously sampling directly provides hot blast, energy consumption in oven dry can be reduced again, thus make granulation process saving energy consumption reach 52.4%;
5. the reasonable in internal structure of cooler, is conducive to the quick cooling of Chemical Mixed Fertilizer, meets the normal operation of production line, improves production efficiency, makes cooling efficiency improve 22.7% than method in the past;
6., at the wind of drying and discharge in process of cooling, discharged after dust removing by serial dust-settling compartment, effectively prevent the pollution to environment in production of compound fertilizer, make the dust removal efficiency of oven dry and process of cooling air draft reach about 98%;
7. the method adds anti-caking liquid and anti-hard caking agent, effectively prevent the agglomeration problems of compound organic and inorganic fertilizer, and Chemical Mixed Fertilizer caking rate dropped to 0.1% by 2.0% of the past;
8. practicality is wide, and this Chemical Mixed Fertilizer preparation method and equipment are suitable for the production of various inorganic composite mixed fertilizer, compound organic and inorganic fertilizer and biological organic-inorganic compound fertilizer.
Accompanying drawing explanation
Fig. 1 is a kind of preparation method's schema of Chemical Mixed Fertilizer.
Fig. 2 is a kind of 8M-15 type rotary drum granulator structural representations.
Wherein: cylindrical shell 11, mixing granulation district 12, shelves material ring 13, overflow groove 14, particle polishing district 15, opening for feed 16, discharge port 17, polymer plastic flitch 18, atomization water pipe 19, the two mouth steam spray device 20 (TD32-5) of single tube, electric motor 21 (Y2-4-7.5KW) and gear 22
Fig. 3 is a kind of M22-2.0-30 type drying machine structure schematic diagram.
Wherein: cylindrical shell 11, opening for feed 16, discharge port 17, electric motor 21 (Y2-4-18.5KW), gear 22, material advance preheating zone 23, steel plate 24, granulation zone 25, steel plate 26, drying zone 27, steel plate 28, granularity solidification polishing area 29, jetting type stainless steel blower fan 30 (Y2-4-5.5KW), vacuum fan 31 (Y2-4-30KW), dust-settling compartment 32.
Fig. 4 is a kind of M15-1.5-11 type Refrigerator structure schematic diagram.
Wherein: cylindrical shell 11, opening for feed 16, discharge port 17, electric motor 21 (Y2-4-11KW), gear 22, material advance district 33, steel plate 34, radiating area 35, steel plate 36, cooling zone 37, vacuum fan 38 (Y2-4-15KW) and dust-settling compartment 39.
Embodiment
Embodiment 1:
A kind of Chemical Mixed Fertilizer, it is made up of the raw material of following weight percent:
Described anti-caking liquid TH-III is that From Zhongxiang Hubei Chen Hui Chemical Co., Ltd. produces;
Described anti-hard caking agent TH-I is that From Zhongxiang Hubei Chen Hui Chemical Co., Ltd. produces.
A preparation method for Chemical Mixed Fertilizer, specifically comprises the steps:
(A) urea, monoammonium phosphate, Repone K and ammonium sulfate are joined U260-50 type stirrer for mixing 1-4 minutes by predetermined proportion, in said mixture, add calcium superphosphate and bicarbonate of ammonia by predetermined proportion again and continue mixing 0.2-2 minutes, obtain mixture 1, by mixture control, material is sent into next program;
(B) mixture 2 of step (A) gained is carried out meal and fine powder, it is made to arrive particle diameter needed for granulation, material particular diameter is made to be less than 20 orders after first pulverizing meal by T800-45 type vertical hilted broadsword single-deck pulverizer, use T900-45 type vertical double-pole double plate pulverizer to carry out fine powder again, crushing rear material particle diameter is less than 40 orders 2;
(C) material transferring obtained after step (B) being pulverized is in the type rotary drum granulator of 8M-15, first material moisture is made to arrive 15%-20% in front end, mixing granulation district by spraying and importing steam, carry out granulation again, then enter polishing area and carry out polishing to particle, material obtains the particle 3 that particle diameter is less than 6 millimeters after first time granulation;
(D) step (C) is obtained particulate matter to be transported in M22-2.0-30 dryer and to carry out drying 4; Drying is second time granulation process, is again drying process; Dryer is divided into 4 districts: comprise material and advance preheating zone, granulation zone, drying zone, granularity solidification polishing discharge zone.Material carries out preheating in propelling preheating zone, then enters granulation zone granulation again, then enters drying zone drying, to be finally cured particle in granularity solidification polishing discharge zone and polishing and discharging.Drying blower fan adopts 72-4-6C type jetting type stainless steel blower fan directly to provide hot blast, and the control of hot blast speed for there to be tiny structure to be principle in drying machine.Install top installation F4-72-10A type vacuum fan at dryer discharge port and carry out air draft, the wind of discharge is discharge after 6-15 cubic metres of dust-settling compartment dedustings through 3 volumes again.Low temperature Wind Volume is the prerequisite guaranteeing the drying of organic-inorganic high concentration fertilizer, and generally, import barrier is at 150-220 DEG C, and control of export is at 50-80 DEG C, and discharge port material water content controls 5%-8%;
(E) particulate matter after oven dry step (D) obtained is transported in M15-1.5-11 type cooler carries out cooling 5, is divided into 3 districts in cooler: comprise material and advance district, radiating area, dust separation district.After particulate matter advances district by material, enter radiating area heat radiation, exhaust duct is installed in cooling zone be connected with F4-72-8A type vacuum fan, the water vapor produced during to discharge cooling and dust, in the wind of discharging, dust is discharged after falling dust room's dedusting that 3 volumes are 6-12 cubic metres again, prevents dust to air environmental pollution.Material, by entering dust separation district again after heat radiation, removes the dust in particulate matter further;
(F) the cooled particulate matter that step (E) obtains is carried out sub-sieve 6 by screening system, screening system arranges three cover separating screen devices, from the material of cooling system conveying first through the M1.5-6 type screen-dividing machine removing particle diameter particle that is greater than 4.75 millimeters, again through the particle that M1.4-6 type screen-dividing machine removing particle diameter is less than 2.0 millimeters, and then obtain through M1.4-5 type essence screen-dividing machine the semi-finished granules that particle diameter is 2.0-4.75 millimeters.The pellet transportation dividing the particle diameter sifted out to be greater than 4.75 millimeters pulverizes 2 again in pulverizer, and the pellet transportation dividing the particle diameter sifted out to be less than 2.0 millimeters carries out granulation 3 again in tablets press.
(G) the semi-finished granules thing obtained after step (F) sub-sieve is transported to M1.2-8-7.5 type polishing machine and carries out polishing 7, in polishing machine barrel, installed thickness is that the height plastic plate of 6 mm thick prevents materials from bonding cylinder plate.Install the stainless steel injection spray pipe that diameter is 15 millimeters at polishing machine feeding mouth place, for spraying into anti-caking liquid TH-III, installing diameter at polishing machine discharge port is that 108 millimeters of weldless steel tubes are for spraying into anti-hard caking agent TH-I.
(H) get the finished product compound fertilizer granule after the polishing that step (G) obtains, carry out particle appearance inspection, and carry out the inspections 8 such as N P and K available nutrient content, obtain nitrogen-phosphorus-potassium compound fertilizer;
(J) nitrogen-phosphorus-potassium compound fertilizer that step (H) obtains is carried out packaging 9 automatically, nitrogen-phosphorus-potassium compound fertilizer finished product 10 of the present invention can be obtained.
Embodiment 2:
A kind of 8M-15 type rotary drum granulator, according to Fig. 2, it is by cylindrical shell 11, mixing granulation district 12, shelves material ring 13, overflow groove 14, particle polishing district 15, opening for feed 16, discharge port 17, polymer plastic flitch 18, atomization water pipe 19, the two mouth steam spray device 20 of single tube, electric motor 21 and gear 22 form, it is characterized in that: apart from 2-3 meters, opening for feed 16 top welding one grade material ring 13 in steel cylinders 11, shelves material ring 13 is be 1.4-1.5 meters with the external diameter that No. 45 steel plates are made, internal diameter is 1.2-1.3 meters, and on shelves material ring 13 equidistant arrange 3 long 2-3 centimetres, the overflow groove 14 of wide 1-2 centimetres, namely angle formed by adjacent two overflow groove central points and shelves material ring 13 circle center line connecting is 120 degree.Granulation efficiency of the present invention is made than the tablets press raising 7.1% not adding blocking material ring owing to the addition of blocking material ring 13.Cylindrical shell 11 is divided into Liang Ge district by the blocking material ring 13 be welded on cylindrical shell 11, is mixing granulation district 12 near opening for feed 16 one end, and is particle polishing district 15 near discharge port 17 one end, and mixing granulation district 12 is connected by shelves material ring 13 with particle polishing district 15.2 pieces of semicircle polymer plastic flitch 18 of pad 2-8 mm thick on the steel barrel in mixing granulation district 12 and particle polishing district 15, and double round plastic plate 18 interface carries out thermo-welding, material not only can be prevented the corrosion of steel cylinders 11, granulation rate and the granulation quality of Chemical Mixed Fertilizer can be improved simultaneously.In opening for feed 16 top, 5-60 centimeters distance barrels 5-15 centimetres install diameter is the two mouth steam spray device 20 of single tube that 50 millimeters of stainless steel tubes are made, and during granulation, saturation steam has a small amount of humidification to material while providing heat; The atomization water pipe 19 that the stainless steel tube that 5-60 centimeters distance barrel 5-15 centimeters also install 1 diameter 32 millimeters in opening for feed 16 top is simultaneously made, sprays to material during granulation and makes it reach required humidity.Steam spray device 20 and atomization water pipe 19 are fixed on independent support, are not connected with cylindrical shell 11.Cylindrical shell 11 is connected with motor 21 by 2 gears 22, drives cylindrical shell 11 to rotate by motor 21 by 2 gears 22.Opening for feed 16 is by being highly that 5-20 centimetres of circular arcs No. 45 Plate Weldings are connected with cylindrical shell 11, and discharge port 17 is also by being highly that 5-20 centimetres of circular arcs No. 45 Plate Weldings are connected with cylindrical shell 11.Cylindrical shell 11 is supported by support.Motor 21 is fixed by support.
Embodiment 3:
A kind of M22-2.0-30 type dryer, according to Fig. 3, it advances preheating zone 23 and steel plate 24 thereof by cylindrical shell 11, opening for feed 16, discharge port 17, electric motor 21, gear 22, material, granulation zone 25 and steel plate 26 thereof, drying zone 27 and steel plate 28 thereof, granularity solidify polishing area 29, jetting type stainless steel blower fan 30, vacuum fan 31, dust-settling compartment 32 form.It is characterized in that: steel cylinders 11 front end is opening for feed 16, opening for feed 16 by height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell 11, opening for feed 16 center is provided with 72-4-6C type jetting type stainless steel blower fan 30 and directly provides hot blast, jetting type stainless steel blower fan 30 is fixed by independent support, be not connected with cylindrical shell 11, just hot air duct road stretches into 3-5 centimeters in opening for feed 16.Interior 1.6 meters of opening for feed 16 to cylindrical shell 11 is material propelling district 23, material advance district 23 barrel is welded with thick 12 millimeters, height 180-220 millimeters, length 1.4-1.6 meters steel plate 24 totally 8 pieces, the central point of adjacent two block plates and the angle of cylindrical shell circle center line connecting are 45 degree (namely 8 block plates 24 are uniformly distributed and are welded on cylindrical shell 11), and the steel plate 24 of welding longitudinally axially becomes 30 degree of angles with cylindrical shell 11.Granulation zone 25 and material advance district 23 to be connected, granulation zone 25 length is 2.8 meters, the steel plate 26 totally 6 pieces of throat thickness 12 millimeters, height 160-200 millimeters, length 2.6 meters on the barrel wall of granulation zone 25, adjacent two block plate 26 central points and cylindrical shell 11 circle center line connecting angle are 60 degree (namely 6 block plates 26 are uniformly distributed and are welded on cylindrical shell 11).Drying zone 27 is connected with granulation zone 25, drying zone length is 15.6 meters, drying zone 27 barrel is welded with the steel plate 28 totally 105 pieces of thickness 12 millimeters, height 23 centimetres, length 70 centimetres, steel plate 28 is divided into 15 circles (distance between two adjacent rings steel plate 28 about 33.3 centimetres), often enclose 7 pieces, in same circle, the angle of adjacent two block plate central points and cylindrical shell circle center line connecting is 51.4 degree, and the intersection dislocation welding of two adjacent rings light plate, advantageously in material tumble dried time dry.Granularity solidification polishing area 29 is connected with drying zone 27, and its rear end is discharge port 17, discharge port 17 by highly 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell 11.F4-72-10A type vacuum fan 31 is installed above discharge port 17, the induced exhaust of vacuum fan 31 one end puts in 10-20 centimeters in discharge port 17, vacuum fan 31 and induced exhaust are fixed by support, be not connected with discharge port 17, the other end of vacuum fan 31 is connected by the dust-settling compartment 32 that pipeline and 3 volumes are 6-15 cubic metres, the air that vacuum fan 31 is extracted out and dust by discharging after dust-settling compartment 32 depositing dust, thus reduce the pollution of dust to air and environment.Cylindrical shell 11 is connected with electric motor 21 by gear 22, and electric motor 21 drives barrel body rotation by gear 22.Cylindrical shell 11 is supported by support, and electric motor 21 is fixed by support.
Described dust-settling compartment 32 is made up of the brick mix structure houselet of 1.2 meters wide, 2 meters high, 2 meters long between 3.The exhaust duct (diameter 600 millimeters) of vacuum fan 31 is communicated with first house, first house is connected with the plastics tubing being 580 millimeters with diameter between the 3rd house with between second house and second house, and being provided with diameter in the other one end in the 3rd house is that the plastics tubing of 580 millimeters is for air draft.
Embodiment 4:
A kind of M15-1.5-11 type cooler, according to Fig. 4, it advances district 33 and steel plate 34, radiating area 35 and steel plate 36 thereof, cooling zone 37, vacuum fan 38 and dust-settling compartment 39 to form by cylindrical shell 11, opening for feed 16, discharge port 17, electric motor 21, gear 22, material.It is characterized in that: steel cylinders 11 front end is opening for feed 16, opening for feed 16 place uses height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell 11.For material advances district 33 within the scope of interior 1.2 meters of opening for feed 16 to cylindrical shell 11, material advances the steel plate 34 totally 8 pieces barrel wall in district 33 being welded with thickness 12 millimeters, high 140-150 millimeters, length 1.2 meters, the angle 45 degree (namely 8 block plates 34 are uniformly distributed and are welded on barrel wall) of steel plate 34 central point and cylindrical shell 11 circle center line connecting, steel plate 34 is oblique welded and installed, and steel plate 34 longitudinally axially becomes 30 degree of angles with cylindrical shell 11.Radiating area 35 and material advance district 33 to be connected, long 12 meters of radiating area 35, the barrel wall of radiating area 35 is welded with the steel plate 36 totally 48 pieces of 12 mm thick, length 700-800 centimetres, high 20-24 centimetres, steel plate 36 is divided into 8 circles (distance between two adjacent rings steel plate 36 is 50-60 centimetres), often enclose 6 pieces, in same circle, the angle of adjacent two block plate central points and cylindrical shell circle center line connecting is 60 degree (namely 6 block plates 36 are uniformly distributed and are welded on cylindrical shell 11), the dislocation of two adjacent rings light plate intersection is welded on barrel, is conducive to particle and rotates heat radiation.Cooling zone 37 is connected with radiating area 35, and long 2.8 meters of cooling zone 37 is discharge port 17 at cooling zone 37 end, and discharge port 17 place uses height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell 11.F4-72-10A type vacuum fan 38 is installed above discharge port 17, the induced exhaust of vacuum fan 38 one end puts in 10-20 centimeters in discharge port 17, vacuum fan 38 and induced exhaust are fixed by support, be not connected with discharge port 17, the other end of vacuum fan 38 is connected by the dust-settling compartment 39 that pipeline and 3 volumes are 6-15 cubic metres, the water vapor that vacuum fan 38 is extracted out and dust by discharging after dust-settling compartment 39 depositing dust, thus reduce the pollution to air and environment of dust in process of cooling.Cylindrical shell 11 is connected with electric motor 21 by gear 22, and electric motor 21 drives cylindrical shell 11 to rotate by gear 22.Cylindrical shell 11 is supported by support, and electric motor 21 is fixed by support.
Described dust-settling compartment 39 is made up of the brick mix structure houselet of 1.2 meters wide, 2 meters high, 2 meters long between 3.The exhaust duct (diameter 600 millimeters) of vacuum fan 38 is communicated with first house, first house is connected with the plastics tubing being 580 millimeters with diameter between the 3rd house with between second house and second house, and being provided with diameter in the other one end in the 3rd house is that the plastics tubing of 580 millimeters is for air draft.
Present invention also offers the using method of nitrogen-phosphorus-potassium compound fertilizer: used by the amount of application of nitrogen-phosphorus-potassium compound fertilizer by 360-400 kilograms/hectares, rice field can be used as base manure and spreads fertilizer over the fields before arable land, can carry out spreading fertilizer over the fields or spreading manuer in holes or row replacement in nonirrigated farmland.
Below the comparative result about a kind of Chemical Mixed Fertilizer preparation method and equipment:
One, Chemical Mixed Fertilizer preparation method and equipment comparative result
Table 3 compound fertilizer pelletizing, oven dry and method of cooling effectiveness comparison
Table 4 mixed fertilizer drying and process of cooling exhausting-dusting effect and preventing blocking effect compare
Claims (4)
1. a preparation method for Chemical Mixed Fertilizer, the steps include:
A, to feed intake: respectively urea, ammonium sulfate, bicarbonate of ammonia, monoammonium phosphate, potassium sulfate or Repone K, calcium superphosphate to be put in the type agitator of U260-50 fully mixing by priority program and, after 0.5-4 minutes, by mixture control, material sent into next program;
B, pulverizing: adopt meal and fine powder two-step approach, first pass through T800-45 type vertical hilted broadsword single-deck pulverizer meal by material, make material particular diameter be less than 20 orders, then by T900-45 type vertical double-pole double plate pulverizer fine powder, make material particular diameter be less than 40 orders;
C, granulation: adopt 8M-15 type rotary drum granulator, by blocking material ring, the cylindrical shell of rotary drum granulator is divided into Liang Ge district, proparea is mixing granulation district, back zone is particle polishing district, at mixing granulation district front end material by spraying and importing the humidity that steam makes to reach needed for granulation: water content is 15%-18%, material after the granulation of mixing granulation district, then enters particle polishing district and carries out polishing to particle, and material obtains the particle that particle diameter is less than 6 millimeters after first time granulation;
D, dry: oven dry is second time granulation process, M22-2.0-30 type dryer is adopted to dry, dryer is divided into 4 districts: comprise material and advance preheating zone, granulation zone, drying zone, granularity solidification polishing discharge zone, material carries out preheating in propelling preheating zone: temperature controls at 100-170 DEG C, then granulation zone granulation is again entered, enter drying zone drying again, finally in granularity solidification polishing discharge zone, particle is cured and polishing and discharging, drying blower fan adopts 72-4-6C type jetting type stainless steel blower fan directly to provide hot blast: temperature controls at 150-220 DEG C, at dryer discharge port, top installation F4-72-10A type vacuum fan is installed and carries out air draft, the wind of discharging is discharge after 6-15 cubic metres of dust-settling compartment dedustings through 3 volumes again, inlet temperature controls at 150-220 DEG C, temperature out controls at 50-80 DEG C, discharge port material water content controls 5%-8%,
E, cooling: adopt M15-1.5-11 type cooler to cool, 3 districts are divided into: comprise material and advance district, radiating area, dust separation district in cooler, after particulate matter advances district by material, enter radiating area heat radiation, exhaust duct is installed in cooling zone be connected with F4-72-8A type vacuum fan, the water vapor produced during to discharge cooling and dust, in the wind of discharging, dust is discharged after falling dust room's dedusting that 3 volumes are 6-12 cubic metres again, material, by entering dust separation district again after heat radiation, removes the dust in particulate matter further;
F, sub-sieve: screening system arranges three cover separating screen devices, from the particle that the material of cooling system conveying is greater than 4.75 millimeters through M1.5-6 type screen-dividing machine removing particle diameter, again by the M1.4-6 type screen-dividing machine removing particle diameter particle that is less than 2.0 millimeters, then obtain by M1.4-5 type essence screen-dividing machine the semi-finished granules that particle diameter is 2.0-4.75 millimeters, the pellet transportation dividing the particle diameter sifted out to be greater than 4.75 millimeters is pulverized in pulverizer again, and the pellet transportation dividing the particle diameter sifted out to be less than 2.0 millimeters carries out granulation again in tablets press;
G, polishing: adopt M1.2-8-7.5 type polishing machine improved to carry out polishing, in polishing machine barrel, installed thickness is that the height plastic plate of 6 mm thick prevents materials from bonding in cylinder plate, the stainless steel injection spray pipe that diameter is 15 millimeters is installed at polishing machine feeding mouth place, for spraying into anti-caking liquid TH-III, installing diameter at polishing machine discharge port is that 108 millimeters of weldless steel tubes are for spraying into anti-hard caking agent TH-I;
H, inspection: visual inspection is carried out in sampling, and carry out the analysis of effective component such as the nitrogen of fertilizer, phosphorus and potassium, obtain nitrogen-phosphorus-potassium compound fertilizer.
2. a kind of 8M-15 according to claim 1 type rotary drum granulator, it is by cylindrical shell (11), mixing granulation district (12), shelves material ring (13), overflow groove (14), particle polishing district (15), opening for feed (16), discharge port (17), polymer plastic flitch (18), atomization water pipe (19), the two mouth steam spray device (20) of single tube, electric motor (21) and gear (22) composition, it is characterized in that: described expects ring (13) apart from 2-3 meters, opening for feed (16) top welding one grade in steel cylinders (11), shelves material ring (13) are for be 1.4-1.5 meters with the external diameter that No. 45 steel plates are made, internal diameter is 1.2-1.3 meters, shelves material ring (13) upper equidistant arrange 3 long 2-3 centimetres, the overflow groove (14) of wide 1-2 centimetres, formed by adjacent two overflow groove (14) central points and shelves material (13) ring circle center line connecting, angle is 120 degree, cylindrical shell (11) is divided into Liang Ge district by the blocking material ring (13) be welded on cylindrical shell (11), opening for feed (16) one end is mixing granulation district (12), discharge port (17) one end is particle polishing district (15), by shelves, mixing granulation district (12) expects that ring (13) is connected with particle polishing district (15), 2 pieces of semicircle polymer plastic flitch (18) of pad 2-8 mm thick on the steel barrel of mixing granulation district (12) and particle polishing district (15), double round plastic plate interface carries out thermo-welding, in opening for feed (16) top, 5-60 centimeters distance barrels 5-15 centimetres install a diameter is the two mouth steam spray device (20) of single tube that 50 millimeters of stainless steel tubes are made, the atomization water pipe (19) that the stainless steel tube that 5-60 centimeters distance barrel 5-15 centimeters also install 1 diameter 32 millimeters in opening for feed (16) top is made, steam spray device (20) and atomization water pipe (19) are fixed on independent support, be not connected with cylindrical shell (11), cylindrical shell (11) is connected with motor (21) by 2 gears (22), opening for feed (16) is by being highly that 5-20 centimetres of circular arcs No. 45 Plate Weldings are connected with cylindrical shell (11), discharge port (17) is by being highly that 5-20 centimetres of circular arcs No. 45 Plate Weldings are connected with cylindrical shell (11), motor (21) is fixed by support.
3. a kind of M22-2.0-30 type dryer according to claim 1, it is by cylindrical shell (11), opening for feed (16), discharge port (17), electric motor (21), gear (22), material advances preheating zone (23) and steel plate (24) thereof, granulation zone (25) and steel plate (26) thereof, drying zone (27) and steel plate (28) thereof, granularity solidification polishing area (29), jetting type stainless steel blower fan (30), vacuum fan (31), dust-settling compartment (32) forms, it is characterized in that: described cylindrical shell (11) front end is opening for feed (16), opening for feed (16) by height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell (11), opening for feed (16) center is provided with 72-4-6C type jetting type stainless steel blower fan (30), jetting type stainless steel blower fan (30) is fixed by independent support, be not connected with cylindrical shell (11), opening for feed (16) interior 1.6 meters to cylindrical shell (11) is material propelling district (23), advance on district (23) barrel at material and be welded with thick 12 millimeters, height 180-220 millimeters, the steel plate (24) of length 1.4-1.6 meters totally 8 pieces, the central point of adjacent two block plates and the angle of cylindrical shell (11) circle center line connecting are 45 degree, 8 block plates (24) are uniformly distributed and are welded on cylindrical shell (11), the steel plate (24) of welding longitudinally axially becomes 30 degree of angles with cylindrical shell (11), granulation zone (25) and material advance district (23) to be connected, granulation zone (25) length is 2.8 meters, throat thickness 12 millimeters on granulation zone (25) barrel wall, height 160-200 millimeters, the steel plate (26) totally 6 pieces of long 2.6 meters, adjacent two block plates (26) central point and cylindrical shell (11) circle center line connecting angle are 60 degree, 6 block plates (26) are uniformly distributed and are welded on cylindrical shell (11), drying zone (27) is connected with granulation zone (25), drying zone (27) length is 15.6 meters, drying zone (27) barrel is welded with thickness 12 millimeters, height 23 centimetres, the steel plate (28) totally 105 pieces of long 70 centimetres, steel plate (28) is divided into 15 circles, distance between two adjacent rings steel plate (28) 33.3 centimetres, often enclose 7 pieces, in same circle, the angle of adjacent two block plate central points and cylindrical shell (11) circle center line connecting is 51.4 degree, the intersection dislocation welding of two adjacent rings light plate, granularity solidification polishing area (29) is connected with drying zone (27), discharge port (17) by height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell (11), in discharge port (17) top, F4-72-10A type vacuum fan (31) is installed, the induced exhaust of vacuum fan (31) one end puts in 10-20 centimeters in discharge port (17), vacuum fan (31) and induced exhaust are fixed by support, be not connected with discharge port (17), the other end of vacuum fan (31) is connected by the dust-settling compartment (32) that pipeline and 3 volumes are 6-15 cubic metres, cylindrical shell (11) is connected with electric motor (21) by gear (22), electric motor (21) is fixed by support.
4. a kind of M15-1.5-11 type cooler according to claim 1, it is by cylindrical shell (11), opening for feed (16), discharge port (17), electric motor (21), gear (22), material advances district (33) and steel plate (34) thereof, radiating area (35) and steel plate (36) thereof, cooling zone (37), vacuum fan (38) and dust-settling compartment (39) composition, it is characterized in that: described cylindrical shell (11) front end is opening for feed (16), opening for feed (16) place uses height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell (11), for material advances district (33) within the scope of opening for feed (16) to interior 1.2 meters of cylindrical shell (11), material advances on cylindrical shell (11) wall in district (33) and is welded with thickness 12 millimeters, high 140-150 millimeters, the steel plate (34) that length is 1.2 meters totally 8 pieces, the angle of steel plate (34) central point and cylindrical shell (11) circle center line connecting 45 degree, 8 block plates (34) are uniformly distributed and are welded on cylindrical shell (11) wall, steel plate (34) is oblique welded and installed, steel plate (34) longitudinally axially becomes 30 degree of angles with cylindrical shell (11), radiating area (35) and material advance district (33) to be connected, long 12 meters of radiating area (35), cylindrical shell (11) wall of radiating area (35) is welded with 12 mm thick, long 700-800 centimetres, the steel plate (36) of high 20-24 centimetres totally 48 pieces, steel plate (36) is divided into 8 circles, distance between two adjacent rings steel plate (36) is 50-60 centimetres, often enclose 6 pieces, in same circle, the angle of adjacent two block plate central points and cylindrical shell (11) circle center line connecting is 60 degree, 6 block plates (36) are uniformly distributed and are welded on cylindrical shell 11, the dislocation of two adjacent rings light plate intersection is welded on barrel, cooling zone (37) is connected with radiating area (35), long 2.8 meters of cooling zone (37), discharge port (17) place uses height 5-20 centimetres of circular arc No. 45 Plate Weldings on cylindrical shell (11), in discharge port (17) top, F4-72-10A type vacuum fan (38) is installed, the induced exhaust of vacuum fan (38) one end puts in interior 10-20 centimetres of discharge port (17), vacuum fan (38) and induced exhaust are fixed by support, be not connected with discharge port (17), the other end of vacuum fan (38) is connected by the dust-settling compartment (39) that pipeline and 3 volumes are 6-15 cubic metres, cylindrical shell (11) is connected with electric motor (21) by gear (22), cylindrical shell (11) is supported by support, electric motor (21) is fixed by support.
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