CN1986428A - Wet production processs and apparatus of granular ferrous sulfate monohydrate - Google Patents
Wet production processs and apparatus of granular ferrous sulfate monohydrate Download PDFInfo
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- CN1986428A CN1986428A CN 200610124163 CN200610124163A CN1986428A CN 1986428 A CN1986428 A CN 1986428A CN 200610124163 CN200610124163 CN 200610124163 CN 200610124163 A CN200610124163 A CN 200610124163A CN 1986428 A CN1986428 A CN 1986428A
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- sulfate monohydrate
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Abstract
The present invention relates to production process and apparatus of granular ferrous sulfate monohydrate. The technological process includes the following steps: water washing and filtering ferric sulfite heptahydrate to purify, dissolving via heating, re-crystallizing, centrifugal drying to obtain ferric sulfite monohydrate powder with Fe content of 30-32 wt%, and returning the centrifugal mother liquid to the dissolving reactor; tabletting the ferric sulfite monohydrate powder, crushing, 2-60 mesh sieving in a vibrating sieve and packing.
Description
Technical field
The present invention relates to a kind of production method of ferrous sulfate monohydrate product, particularly the byproduct ferrous sulfate with titanium powder plant or Steel Plant is the production method and the equipment of the particulate state ferrous sulfate monohydrate of raw material production.
Background technology
Ferrous sulfate monohydrate, molecular formula FeSO
4H
2O, proterties: canescence has astringent taste to cream-coloured powder.Mainly by FeSO
4H
2O forms, and contains a spot of FeSO
44H
2O, more difficult oxidation, than the ferrous easy preservation of crystalline sulfuric acid, it is acid and muddy that the aqueous solution is, and generates the tawny precipitation gradually.Absorb water into three water or seven water salt in the damp atmosphere, be heated to 120 ℃ of not dehydrations.Boil altogether with water and to be transformed into subsulphate, slowly be dissolved in cold water (16.6g/100ml, 20 ℃), heating is dissolving rapidly then, is insoluble to ethanol, is dissolved in 50% sulfuric acid hardly, and iron-holder is by 20%.Medically Chang Zuowei improves hypoferric anemia, supplies with as source of iron.In various ferruginous accessory substances, general all with the standard of ferrous sulfate as bioavailability, promptly with the relative biological value of ferrous sulfate as 100, as the standard of comparison of various molysite.Quality index FCC, (1996) content (FeSO
4) 86.0%～89.0%; Insoluble substance≤0.05%; Heavy metal content≤10mg/kg such as lead, mercury, cadmium, chromium; Because ferrous sulfate monohydrate is than three aqueous ferrous sulfates, four aqueous ferrous sulfates, iron vitriol iron-holder height, be not easy oxidation, so the use of fields such as medicine industry, pigment, dyestuff, Treatment of Industrial Water and chemical reagent, fodder additives, trace element fertilizer is more.But a water sulfurous acid iron crystallization is tiny, transportation pressurized after the pack, sometimes also be subjected to ambient moisture and Temperature Influence, the moisture absorption is lumpd easily, the ferrous sulfate hardness of forming after the bulk is higher, need before the use to pulverize again, use just very inconvenient like this, a lot of users advise that ferrous sulfate manufacturer solves agglomeration problems, but never be achieved at present, and because a water sulfurous acid iron crystallization is tiny, dust from flying during use has influenced health of operators, forms easily when spreading fertilizer over the fields and is difficult for settled dust and is taken away by wind carrying out aircraft as iron fertilizer.
The production method of ferrous sulfate monohydrate is more, and the preparation method of textbook introduction adds dilute sulphuric acid in the iron filings, and during water dissolution during crystallization＞64.4 ℃, gained is a water salt, or crystalline sulfuric acid iron is dried to powder and gets under 40 ℃.Be dissolved in crystal water when being heated to 45～50 ℃ and dissolve slow while stirring evaporative crystallization water.The limit of weight loss on drying is 35%～36%, generates granule state fine powder, makes powder, and sealing is preserved.
The method that at present domestic most of enterprises produce ferrous sulfate monohydrate is to be raw material production with the iron vitriol, and great majority adopt dry production, and its processing step is: with FeSO
47H
2O hot water dissolving's recrystallization, dry in hotblast stove then, obtain powdered FeSO
4H
2The O product.
Some open source literatures have been reported the production method of some ferrous sulfate monohydrates in recent years, and we also find following Chinese patent through retrieval:
1, application (patent) number: 95101641.5 applyings date: 1995.02.24 title: production of ferrous sulfate monohydrate with liquid-phase forced dewatering method, application (patent right) people: Liu Yifeng, address: No. 6, No. 17 building, Haidian South Road, Beijing 16 floor, summary: the present invention relates to a kind of production method of inorganic salt ferrous sulfate monohydrate, its principal character is: ferrous sulfate monohydrate generates by making iron vitriol forced dehydration in the dewatering agent sulphuric acid soln under certain condition; And if produce ferrous sulfate monohydrate with sulfuric acid and iron or iron-bearing material, then sulfuric acid must at first use as the liquid-phase dehydration agent of iron vitriol, just generates the reaction of iron vitriol then with iron or iron-bearing material.Compare with existing processing method, the present invention can very cut down the consumption of energy, improve throughput significantly, obtains the reliable and stable pure white ferrous sulfate monohydrate product of good quality.Principal claim: a kind of novel method of producing ferrous sulfate monohydrate, it is characterized in that: ferrous sulfate monohydrate generates by making iron vitriol forced dehydration in the dewatering agent sulphuric acid soln under certain condition, and if with sulfuric acid and iron or iron-bearing material production ferrous sulfate monohydrate, then sulfuric acid must be at first uses as the liquid-phase dehydration agent of iron vitriol, just generates the reaction of iron vitriol then with iron or iron-bearing material.
2, application (patent) number: 00120755.5 applying date: 2000.07.12, title: a kind of production method application (patent right) people of high-purity ferrous sulfate monohydrate: Tiandao Longyang High Molecular Tech. Co., Ltd., Beijing, address: No. 1 strong Xiang mountain villa, 100029 A Huayanbeili ,Chaoyang District ,Beijing City A6 building Yuan Xiao China summary: the present invention be a kind of be raw material with the disused auxiliary matter that contains ferrous sulfate, select method targetedly with compound impurity elimination purification style production of high purity in next life ferrous sulfate monohydrate.This method have raw material applied widely, take off assorted purify thoroughly, energy consumption is low, free from environmental pollution, production control reliable and be convenient to mass-producing quantity-produced characteristics.The gained high-purity ferrous sulfate monohydrate has stability in storage and high reactivity, is widely used in fields such as medicine, food and fodder additives, fine chemistry industry, microelectronics.The production method of claims 1, a kind of high-purity ferrous sulfate monohydrate: through operations such as washing, filtration, removal of impurities, crystallization, dryings; It is characterized in that: the disused auxiliary matter that contains ferrous sulfate that utilizes some commercial runs to produce is made raw material, in the operation of its solution being carried out removal of impurities, use Iron sulfuret powder (FeS, granularity is 1 μ-3mm) and iron powder (Fe, granularity is that 1 μ-3mm) and flocculation agent are as the impurity and purification agent, and feeding water vapor and little air, in the pH value is the scope of 2-5.5, solution is heated and stirs.
3, application (patent) number: 200510019362.6 applyings date: 2005.08.27 title: a kind of production method application (patent right) people of ferrous sulfate monohydrate: Guangxi HeZhou Chemland Co.,Ltd. address: send out in the west flat osmanthus, street branch post office and make a summary in Babu District Xi Wan town in Hezhou City, Guangxi Zhuang Autonomous Region: a kind of production method of ferrous sulfate monohydrate, iron vitriol is heated in the rolling progressive process in temperature is 380-500 ℃ rotary kiln, take off six crystal water and granulation, kiln discharge after fragmentation, sieve finished product.With the ferrous sulfate monohydrate that method of the present invention is produced, the discharging that constant product quality, energy consumption be low, free from environmental pollution, do not have secondary wastewater, be convenient to production control and mass-producing continuous production; And the ferrous iron biological value in the ferrous sulfate monohydrate of producing is than high, and wandering good dispersity does not destroy VITAMIN, and the biological respinse nerve stimulation is little, is absorbed by all kinds of animals and plants easilier.The production method of 1. 1 kinds of ferrous sulfate monohydrates of principal claim, iron vitriol is removed six crystal water to form, it is characterized in that iron vitriol is heated in the rolling progressive process in temperature is 380-500 ℃ rotary kiln, take off six crystal water and granulation, kiln discharge after fragmentation, sieve finished product.
The characteristics of the method that No. 95101641.5, above-mentioned patent documentation are the sulfuric acid dewatering agent need be added forced dehydration in the iron vitriol solution in production process, can cause production cost to raise like this, equipment manufacturing cost height (require corrosion resistance good).
The disused auxiliary matter that contains ferrous sulfate that patent documentation 00120755.5 utilizes some commercial runs to produce is made raw material, use Iron sulfuret powder and iron powder and flocculation agent as the impurity and purification agent in the operation of its solution being carried out removal of impurities, the ferrous sulfate monohydrate that this method is worked it out is the product of fine powdered.
The feature of patent documentation 200510019362.6 is that iron vitriol is heated in the rolling progressive process in temperature is 380-500 ℃ rotary kiln, takes off six crystal water and granulation, kiln discharge after fragmentation, sieve finished product.The shortcoming of this method is that time of stopping in rotary kiln of iron vitriol is long, ferrous iron is easy to be oxidized to ferric iron, also is easy to caking, and product contains ferrous sulfate products such as two relatively large water, three water, four water, iron level does not reach 20%, so can only produce low grade products.
Summary of the invention
The purpose of this invention is to provide that a kind of can to overcome an existing water sulfurous acid iron crystallization tiny, dust from flying when the easy oxidation of production process, use, the shortcoming of packing and accumulating, use inconvenience, and the particulate state ferrous sulfate monohydrate and the production method of the effective constituent iron level in can stable prod.
Wet production particulate state ferrous sulfate monohydrate of the present invention comprises following processing step:
1, washing.Seven water sulfurous acid iron are used clear water flush away surface impurity earlier, because no matter be the iron vitriol that titanium powder plant byproduct or pickling iron and steel are produced, all there are some free acids or metatitanic acid, heavy metal ion and can be tolerant etc. impurity, the process of cleaning is earlier clear water and seven water sulfurous acid iron to be poured into the washing of washing and filtering pond, the ratio of seven water sulfurous acid iron and clear water is that seven per 100 kilograms water sulfurous acid iron add water 5-30 kilogram, whipping appts can be set, stirred 5-10 minute, only put 10-20 minute, removal floats over top floating matter, filter then, water is drained, obtain purified seven water sulfurous acid iron.Filtering water can recovery part seven water sulfurous acid iron through concentrating.
2, solubilizing reaction.Seven water sulfurous acid iron of above-mentioned washing filter solid carbon dioxide are put in the container dissolve, dissolved solution is the mother liquor that clear water and back operation reclaim, the amount that per 100 kilogram of seven water sulfurous acid iron adds clear water and mother liquor is the 2-5 kilogram, temperature is elevated to 70-100 ℃ makes its dissolving fully, got final product in general stirring reaction 10-30 minute, and temperature is reduced to just can makes seven water sulfurous acid iron be transformed into the ferrous sulfate monohydrate crystallization below 65 ℃.
3, centrifugal.With the above-mentioned ferrous sulfate monohydrate crystallization that obtains be put into whizzer carry out centrifugal, the mother liquor of telling return second the step dissolving, promptly with clear water mixed dissolution seven water sulfurous acid iron; The ferrous sulfate monohydrate solid of telling enters next step drying.
4, drying.Ferrous sulfate monohydrate after centrifugal is put into moisture eliminator carries out drying, the exsiccant method can adopt direct drying method or contact drying method, and direct drying method is with air stream drying or microwave drying.Air stream drying is that material is put on the fluidized-bed, contacts rapidly with 150 to 250 ℃ heated dry airs, and takes away air-flow with induced draft fan, just ferrous sulfate monohydrate can be dried to water content less than 10% powder; Microwave drying is that material is put in the microwave oven, heats 3-10 minute; Contact drying is that moisture eliminator is made the board-like or votator of vibration, hot blast or the interlayer of boiler hot flue gas outside ferrous sulfate monohydrate is housed pass through, and ferrous sulfate monohydrate obtains the heat of hot blast or boiler hot flue gas and evaporates free-water and obtain drying under the situation of the board-like or helical stir of vibration.The exsiccant technical indicator is that analysis one water sulfurous acid iron powder iron-holder is that 30-32% (weight content) is as the criterion.
5, compressing tablet.With tabletting machine an above-mentioned water sulfurous acid iron that comes out from moisture eliminator is pressed into immediately the sheet iron vitriol of thickness 2-10mm by the method for pressurization.In the compressing tablet process,, make its increase in density, be difficult for pulverizing because a water sulfurous acid iron is carried out high compression.
4, granulation.With crusher the sheet ferrous sulfate monohydrate is broken into granular ferrous sulfate monohydrate.
5, screening.Ferrous sulfate monohydrate above-mentioned size distribution is wider by vibratory screening apparatus sieves separation, collects 2-60 order particle and packs, and the powder that sifts out turns back to the workshop of front, mixes with a dried water sulfurous acid iron, again compressing tablet.
The equipment that production method adopted of above-described particulate state ferrous sulfate monohydrate comprises washing (stirring) filtering basin, solubilizing reaction, whizzer, moisture eliminator, tabletting machine, crusher and sieve apparatus.
Described washing and filtering pond is that filter screen and valve are arranged at the bottom, fasten valve during use earlier, toward the interior water filling of filtering basin, add iron vitriol again, only put for some time after the stirring, removal floats over top floating matter, opens valve from sewage draining exit venting impurity, goes out the free-water of iron vitriol then with strainer filtering.Agitator can be installed in inside, washing and filtering pond.
Described moisture eliminator adopts hotblast stove or boiler hot smoke air dry device, type of heating adopt pneumatic dryer, microwave heater,, the board-like moisture eliminator of vibration or votator, the structure of interchanger is that hot blast or the interlayer of boiler hot flue gas outside ferrous sulfate monohydrate is housed pass through, and ferrous sulfate monohydrate obtains the heat of hot blast or boiler hot flue gas and evaporates free-water and obtain drying under the situation of the board-like or helical stir of vibration.
Described tabletting machine adopts the roller press type tabletting machine, top is hopper, the middle part is motor-operated two cylinders up and down, powdered iron vitriol material enters cylinder from hopper, be pressed into the sheet iron vitriol of thickness 2-10mm, also can adopt the vertical pressure machine, purpose is that the ferrous sulfate monohydrate with lenticular is pressed into the bigger sheet of density.
Described crusher adopts hammer crusher, and its similar is existing to be broken into about 2-60 order (1-10mm) particulate crusher with the sheet iron vitriol, no longer describes in detail herein.
Described sieve apparatus adopts the whirling vibration sieve apparatus, and the particle of 2-60 purpose iron vitriol is collected in the specification major control of screen cloth.
Above-mentioned crusher and sieve apparatus can be made of one, and promptly drive crushing mechanism and screening mechanism simultaneously by an electric motor, once finish fragmentation and screening process.
Compared with prior art, outstanding substantive distinguishing features of the present invention and obvious improvement are:
1, overcome the tiny shortcoming of existing ferrous sulfate monohydrate powder, packing and accumulating are all very convenient.
2, production process technology is uncomplicated, and equipment design or type selecting are easy.
3, can utilize some used heat, energy consumption is not high, the production process three-waste free pollution.
4, particle is moderate, is particularly suitable for big area and spreads fertilizer over the fields with aircraft when applying fertilizer as iron fertilizer separately.
Description of drawings
Fig. 1 is the technical process and the apparatus sketch of wet production particulate state ferrous sulfate monohydrate of the present invention.
From figure, recognize, equipment comprises washing and filtering pond 1, dissolution reactor 2, whizzer 3, moisture eliminator 4, tabletting machine 5, crusher 6, sieve apparatus 7 and wrapping machine 8, the tap water inlet is arranged at 1 top, washing and filtering pond, agitator can be equipped with in inside, discharge port is arranged at the bottom, blowdown is arranged at washing filter 1 bottom, seven water sulfurous acid iron of washing and filtering pond 1 outlet are delivered to dissolution reactor 2, dissolution reactor 2 has opening for feed and discharge port, tap water and mother liquor inlet are arranged at top, dissolution reactor 2 materials are delivered to whizzer 3, and the material of whizzer 3 outlets is delivered to tabletting machine 5, and whizzer 3 isolating mother liquors return dissolution reactor 2 and reuse.Tabletting machine 5 material outlets are crusher 6 inlets, crusher 7 outlet installation kit installations 8.
Production method is as follows:
Seven water sulfurous acid iron are used clear water flush away surface impurity earlier in service sink 1, the process of cleaning is earlier seven water sulfurous acid iron and clear water to be poured into washing in the washing and filtering pond 1, only put after the washing, removal floats over top floating matter, open the wash water valve below the service sink 1, venting be deposited in the bottom impurity, filter then, water is drained, obtain purified seven water sulfurous acid iron.Seven water sulfurous acid iron after the above-mentioned cleaning be put into dissolution reactor 2 be warmed to 70-100 ℃ melt after, be cooled to below 65 ℃, the recrystallization material is delivered to whizzer 3, the material of whizzer 3 outlets is delivered to moisture eliminator 4, obtaining iron-holder is the water sulfurous acid iron powder (weight content) of 30-32%, a water sulfurous acid iron that does not contain free-water, the mother liquor of whizzer 3 outlets is got back to dissolution reactor 2, dissolves seven water sulfurous acid iron; Pass to tabletting machine 5 again, an above-mentioned water sulfurous acid iron that does not contain free-water that comes out from moisture eliminator is pressed into immediately the sheet of thickness 2-10mm with tabletting machine 5, be broken into granular iron vitriol with crusher 7 again, sieve separation by vibratory screening apparatus 7 at last, collecting 2-60 order particle packs at wrapping machine 8, the powder that sifts out is got back to the workshop of front, mixes with a dried water sulfurous acid iron, again compressing tablet.
Embodiment
Embodiment 1
Titanium powder plant byproduct seven water sulfurous acid iron are poured into earlier in the washing and filtering pond 1 with clear water flush away surface impurity, the ratio of seven water sulfurous acid iron and clear water is that seven per 100 kilograms water sulfurous acid iron add water 5-30 kilogram, after the stirring, only put 10-20 minute, removal floats over top floating matter, venting be deposited in the bottom impurity, filter then, water is drained, obtain purified seven water sulfurous acid iron.Filtering water can recovery part seven water sulfurous acid iron through concentrating.With seven water sulfurous acid iron after the above-mentioned cleaning be put into dissolution reactor be warmed to 70-100 ℃ melt after, be cooled to below 65 ℃, it is centrifugal that the recrystallization material is delivered to whizzer, again boiler hot smoke air dry device indirect heating; Obtaining iron-holder is the water sulfurous acid iron powder (weight content) of 30-32%, does not contain a water sulfurous acid iron of free-water, and the isolating mother liquor of whizzer returns dissolution reactor and reuses.With tabletting machine an above-mentioned water sulfurous acid iron that does not contain free-water that comes out from moisture eliminator is pressed into immediately the sheet of thickness 2-10mm then, granulate with crusher in crushing again and sieve separation by vibratory screening apparatus at last, collecting 2-60 order particle packs, the powder that sifts out is got back to the workshop of front, mix with a dried water sulfurous acid iron, again compressing tablet.
Embodiment 2
Titanium powder plant byproduct seven water sulfurous acid iron are poured into earlier in the washing and filtering pond 1 with clear water flush away surface impurity, the ratio of seven water sulfurous acid iron and clear water is that seven per 100 kilograms water sulfurous acid iron add water 5-30 kilogram, after the stirring, only put 10-20 minute, removal floats over top floating matter, venting be deposited in the bottom impurity, filter then, water is drained, obtain purified seven water sulfurous acid iron.Filtering water can recovery part seven water sulfurous acid iron through concentrating.With seven water sulfurous acid iron after the above-mentioned cleaning be put into dissolution reactor be warmed to 70-100 ℃ melt after, be cooled to below 65 ℃, it is centrifugal that the recrystallization material is delivered to whizzer, uses in the pneumatic dryer dry again; Obtaining iron-holder is the water sulfurous acid iron powder (weight content) of 30-32%, does not contain a water sulfurous acid iron of free-water, and the isolating mother liquor of whizzer returns dissolution reactor and reuses.With tabletting machine an above-mentioned water sulfurous acid iron that does not contain free-water that comes out from moisture eliminator is pressed into immediately the sheet of thickness 2-10mm then, granulate with crusher in crushing again and sieve separation by vibratory screening apparatus at last, collecting 2-60 order particle packs, the powder that sifts out is got back to the workshop of front, mix with a dried water sulfurous acid iron, again compressing tablet.
Embodiment 3
Titanium powder plant byproduct seven water sulfurous acid iron are poured into earlier in the washing and filtering pond 1 with clear water flush away surface impurity, the ratio of seven water sulfurous acid iron and clear water is that seven per 100 kilograms water sulfurous acid iron add water 5-30 kilogram, after the stirring, only put 10-20 minute, removal floats over top floating matter, venting be deposited in the bottom impurity, filter then, water is drained, obtain purified seven water sulfurous acid iron.Filtering water can recovery part seven water sulfurous acid iron through concentrating.With seven water sulfurous acid iron after the above-mentioned cleaning be put into dissolution reactor be warmed to 70-100 ℃ melt after, be cooled to below 65 ℃, it is centrifugal that the recrystallization material is delivered to whizzer, uses microwave heating 3-10 minute drying again; Obtaining iron-holder is the water sulfurous acid iron powder (weight content) of 30-32%, does not contain a water sulfurous acid iron of free-water, and the isolating mother liquor of whizzer returns dissolution reactor and reuses.With tabletting machine an above-mentioned water sulfurous acid iron that does not contain free-water that comes out from moisture eliminator is pressed into immediately the sheet of thickness 2-10mm then, granulate with crusher in crushing again and sieve separation by vibratory screening apparatus at last, collecting 2-60 order particle packs, the powder that sifts out is got back to the workshop of front, mix with a dried water sulfurous acid iron, again compressing tablet.
The present invention produces the product of the particulate state one water sulfurous acid iron that obtains and tests through provincial examination and test of products center: product is the canescence particulate state, 1-10mm (between the 2-60 order), and the iron weight content is 30-32%; The weight content 0.1-0.5% of free acid; Density: 2.0-4.0g/cm
3, insolubles 0.1-2.0%; Heavy metal such as chromium, cadmium gross weight content is less than 0.01%.
Claims (8)
1, a kind of technology of wet production particulate state ferrous sulfate monohydrate, be with seven water sulfurous acid iron be raw material through melting, crystallization and the dry process that obtains ferrous sulfate monohydrate, it is characterized in that: with the washing of seven water sulfurous acid iron process, solubilizing reaction crystallization then, centrifugal again, dry, compressing tablet, fragmentation and screening obtain iron weight content 30-32%, 2-60 order particulate one water sulfurous acid iron product.
2, the technology of wet production particulate state ferrous sulfate monohydrate according to claim 1, it is characterized in that: the process of washing is that clear water and seven water sulfurous acid iron are poured into the container for stirring washing, the ratio of seven water sulfurous acid iron and clear water is that seven per 100 kilograms water sulfurous acid iron add water 20-30 kilogram, stir after 5-10 minute, only put 10-20 minute, removal floats over top floating matter, venting is deposited in the silt and the bigger impurity of proportion of bottom, filter then, water is drained, obtain purified seven water sulfurous acid iron, filtering water can recovery part seven water sulfurous acid iron through concentrating.
3, the technology of wet production particulate state ferrous sulfate monohydrate according to claim 1, it is characterized in that: solubilizing reaction is that seven water sulfurous acid iron with above-mentioned washing filter solid carbon dioxide are put in the container and dissolve, dissolved solution is the mother liquor that clear water and back operation reclaim, the amount that per 100 kilogram of seven water sulfurous acid iron adds clear water and mother liquor is the 2-5 kilogram, temperature is elevated to 70-100 ℃ makes its dissolving fully, temperature is reduced to makes seven water sulfurous acid iron be transformed into the ferrous sulfate monohydrate crystallization below 65 ℃ then.
4, the production method of particulate state ferrous sulfate monohydrate according to claim 1, it is characterized in that: centrifugal process is the ferrous sulfate monohydrate crystallization that the solubilizing reaction recrystallization obtains to be put into whizzer carry out centrifugal, the mother liquor of telling returns the dissolving in second step, promptly with clear water mixed dissolution one water sulfurous acid iron; The ferrous sulfate monohydrate solid of telling enters next step drying.
5, the technology of wet production particulate state ferrous sulfate monohydrate according to claim 1, it is characterized in that: drying process is the ferrous sulfate monohydrate after centrifugal to be put into moisture eliminator carry out drying, the exsiccant method can adopt direct drying method or contact drying method, and direct drying method is with air stream drying or microwave drying; Contact drying is that moisture eliminator is made the board-like or votator of vibration, hot blast or the interlayer of boiler hot flue gas outside ferrous sulfate monohydrate is housed pass through, ferrous sulfate monohydrate is dry under the situation of the board-like or helical stir of vibration, obtains the heat of hot blast or boiler hot flue gas and evaporates the water sulfurous acid iron powder that free-water obtains iron weight content 30-32%.
6, the technology of wet production particulate state ferrous sulfate monohydrate according to claim 1 is characterized in that: broken process is with crusher the sheet ferrous sulfate monohydrate to be broken into granular ferrous sulfate monohydrate.
7, the technology of wet production particulate state ferrous sulfate monohydrate according to claim 1, it is characterized in that: the process of screening is to sieve separation by the vibratory screening apparatus ferrous sulfate monohydrate that above-mentioned size distribution is wider, collecting 2-60 order particle packs, the powder that sifts out is got back to the workshop of front, mix with a dried water sulfurous acid iron, again compressing tablet.
8, a kind of equipment that technology adopted of wet production particulate state ferrous sulfate monohydrate as claimed in claim 1, comprise washing and filtering pond (1), dissolution reactor (2), whizzer (3), moisture eliminator (4), tabletting machine (5), crusher (6), sieve apparatus (7) and wrapping machine, the tap water inlet is arranged at top, washing and filtering pond (1), discharge port is arranged at the bottom, blowdown is arranged at washing filter (1) bottom, seven water sulfurous acid iron of washing and filtering pond (1) outlet are delivered to dissolution reactor (2), dissolution reactor (2) has opening for feed and discharge port, tap water and mother liquor inlet are arranged at top, dissolution reactor (2) material is delivered to whizzer (3), the material of whizzer (3) outlet is delivered to tabletting machine (5), the isolating mother liquor of whizzer (3) returns dissolution reactor (2) and reuses, tabletting machine (5) material outlet is crusher (a 6) inlet, crusher (7) outlet installation kit installation (8).
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| CN 200610124163 CN1986428A (en) | 2006-12-12 | 2006-12-12 | Wet production processs and apparatus of granular ferrous sulfate monohydrate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921000A (en) * | 2010-08-06 | 2010-12-22 | 安吉豪森药业有限公司 | Production method of pharmaceutical-grade ferrous sulfate |
| CN101955233A (en) * | 2010-08-30 | 2011-01-26 | 攀枝花圣地元科技有限责任公司 | Method for producing ferrous sulphate monohydrate |
| CN107089687A (en) * | 2017-03-14 | 2017-08-25 | 襄阳龙蟒钛业有限公司 | A kind of production method of granular ferrous sulfate monohydrate |
| CN107098399A (en) * | 2017-07-21 | 2017-08-29 | 襄阳龙蟒钛业有限公司 | A kind of device for producing particle proterties ferrous sulfate monohydrate |
-
2006
- 2006-12-12 CN CN 200610124163 patent/CN1986428A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921000A (en) * | 2010-08-06 | 2010-12-22 | 安吉豪森药业有限公司 | Production method of pharmaceutical-grade ferrous sulfate |
| CN101955233A (en) * | 2010-08-30 | 2011-01-26 | 攀枝花圣地元科技有限责任公司 | Method for producing ferrous sulphate monohydrate |
| CN101955233B (en) * | 2010-08-30 | 2012-07-11 | 攀枝花圣地元科技有限责任公司 | Method for producing ferrous sulphate monohydrate |
| CN107089687A (en) * | 2017-03-14 | 2017-08-25 | 襄阳龙蟒钛业有限公司 | A kind of production method of granular ferrous sulfate monohydrate |
| CN107098399A (en) * | 2017-07-21 | 2017-08-29 | 襄阳龙蟒钛业有限公司 | A kind of device for producing particle proterties ferrous sulfate monohydrate |
| CN107098399B (en) * | 2017-07-21 | 2019-04-09 | 襄阳龙蟒钛业有限公司 | A kind of device producing particle proterties ferrous sulfate monohydrate |
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