CN109956823A - A kind of production method of potassium sulfate fertilizers particle - Google Patents
A kind of production method of potassium sulfate fertilizers particle Download PDFInfo
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- CN109956823A CN109956823A CN201910338089.5A CN201910338089A CN109956823A CN 109956823 A CN109956823 A CN 109956823A CN 201910338089 A CN201910338089 A CN 201910338089A CN 109956823 A CN109956823 A CN 109956823A
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- CN
- China
- Prior art keywords
- potassium sulfate
- oxide red
- iron oxide
- production method
- powder
- Prior art date
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- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 title claims abstract description 107
- 229910052939 potassium sulfate Inorganic materials 0.000 title claims abstract description 107
- 235000011151 potassium sulphates Nutrition 0.000 title claims abstract description 107
- 239000003337 fertilizer Substances 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 239000002245 particle Substances 0.000 title claims abstract description 37
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000011230 binding agent Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 26
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 80
- 229960005191 ferric oxide Drugs 0.000 claims description 80
- 239000000843 powder Substances 0.000 claims description 46
- 238000001035 drying Methods 0.000 claims description 45
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 21
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 20
- 238000012216 screening Methods 0.000 claims description 15
- 239000012153 distilled water Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000008187 granular material Substances 0.000 abstract description 13
- 238000005469 granulation Methods 0.000 abstract description 6
- 230000003179 granulation Effects 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 235000015097 nutrients Nutrition 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000010410 dusting Methods 0.000 abstract description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 21
- 229940072033 potash Drugs 0.000 description 21
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 21
- 235000015320 potassium carbonate Nutrition 0.000 description 21
- 238000004458 analytical method Methods 0.000 description 10
- 238000010561 standard procedure Methods 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical group [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- 239000011591 potassium Substances 0.000 description 6
- 229910001950 potassium oxide Inorganic materials 0.000 description 6
- 239000001062 red colorant Substances 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 5
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 239000001103 potassium chloride Substances 0.000 description 3
- 235000011164 potassium chloride Nutrition 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000015895 biscuits Nutrition 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000020983 fruit intake Nutrition 0.000 description 1
- 239000001056 green pigment Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- DWCZIOOZPIDHAB-UHFFFAOYSA-L methyl green Chemical compound [Cl-].[Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC(=CC=1)[N+](C)(C)C)=C1C=CC(=[N+](C)C)C=C1 DWCZIOOZPIDHAB-UHFFFAOYSA-L 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000879 optical micrograph Methods 0.000 description 1
- 239000003895 organic fertilizer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Abstract
The present invention relates to a kind of production method of potassium sulfate fertilizers particle, which includes that potassium sulfate is crushed with iron oxide red, potassium sulfate is mixed with iron oxide red, binder is prepared and granulation.The granular potassium sulfate fertilizer product uniform particle sizes produced using the method for the present invention, particle rounding, surface is smooth, and granule strength reaches national fertilizer nutrient standard.In transport and application, is not in dusting, can be used as the raw material of compound fertilizer.
Description
[technical field]
The invention belongs to technical field of fertilizer production.More particularly it relates to a kind of life of potassium sulfate fertilizers particle
Production method.
[background technique]
The principal item of potash fertilizer is potassium chloride and potassium sulfate, and in addition there are a small amount of potassium nitrate.No matter import or domestic potassium
Fertilizer is based on powdery.Powdery fertilizer should not dispense, Yi Qichen and loss, and be not easy to realize mechanized application.Currently, the world
The 40% of potash fertilizer is processed to granular pattern.Granular fertilizer is compared with powdered fertilizer, granulated fertilizer good physical performance, loads and unloads Shi Buqi
Dirt, long-term storage do not agglomerate, good fluidity, applies fertilizer and easily dispenses, and can mechanical fertilization, while may also function as appropriate slow releasing function,
Improve the utilization rate of fertilizer.Granulated fertilizer similar in size can realize direct blending, obtain the Blending Fertilizer of low cost.
Currently, 90% granular potash fertilizer is all using powdery potash fertilizer as raw material in the world, using roller extruder method secondary operation system
?.The technological principle that roll-in is granulated is mainly that dry material is agglomerated into fine and close hard bulk (biscuit), biscuit under pressure
It is broken after screening again as granulated fertilizer.Intergranular air exhausted by squeezing, makes grain spacing from reaching close enough,
To generate such as Van der Waals force, crystal brige and embedded connection attraction.The particle of extrusion granulation is mainly the effect leaned between molecule
The granule strength that power is formed.Granulation time is partially long, and granule strength is limited；And since potassium sulfate is a kind of brittle material, not
It is easily broken in the case where using adhesive, and the particle surface of extrusion molding rougher is easily broken.
The method of preparation granular potash fertilizer has addition binder method, recrystallization method and mechanical pelleting method etc..Wherein, for adding
Adding additives method, more common binder type have clay class (including clay, kaolin coal slime, sepiolite powder, magnesia etc.), phosphorus
Gypsum, calcium magnesium phosphate etc..By adding binder in powdery potash fertilizer, then it is granulated, is dried using the method for disc granulation
It does, sieve and granular potash fertilizer is made.This method common problem is the incoherent useless with agricultural production of addition
Ingredient is more, so that effective fertilizer composition decreases, low strength.
CN 200910213838, denomination of invention " a kind of the manufacturing method of granular potash fertilizer and products thereof " disclose a kind of
The manufacturing method and products thereof of grain potash fertilizer mixes in proportion powdery potash fertilizer used in production granular potash fertilizer and ground phosphate rock
Acid solution is sprayed by sour usage ratio on the bed of material for being added in pelletizer, and moving into pelletizer and is granulated, it will
After granulation granule materials be dried, cool down, sieving, metering packing.
CN 201510190548, entitled " a kind of preparation method of rounded grain slow-release potassium fertilizer " disclose a kind of circle
The preparation method of particle slow release potash fertilizer, method includes the following steps: phosphoric acid or phosphoric acid slag acid that mass concentration is 10-60%
The activator for accounting for phosphoric acid or phosphoric acid slag acid solution quality 0.5-2% is added at a temperature of 80-120 DEG C in solution, activates 1-2h system
Obtain mixed liquor；Mixed liquor is sprayed onto potassium chloride or potassium sulfate crystal surface in Granulation Equipments, liquid coating is formed, then adds
Powder magnesia, the two react, and form the solidfied material with certain cohesive force and hardness, loop back and forth like this, mixed liquor
Replace addition with magnesia on potassium chloride or potassium sulfate crystal surface, little particle fertilizer is gradually wrapped up, is long under continuous roll
Greatly, the rounded grain slow-release potassium fertilizer that partial size is 4-5mm is obtained.Formation and its insoluble energy of the present invention due to solidfied material, the circle
Granulated fertilizer has good sustained release performance, contains the nutrients such as N, P, Mg in fertilizer.
In conclusion the fertilizer of powdery is easy to drift with the wind, it is unfavorable for Mechanization sowing, and granular potash fertilizer can solve these
Problem, it is also very big to the demand of granular potash fertilizer in the market, so manufacturer is just needed to produce stable granular potash fertilizer to expire
The sufficient market demand.There are many technical study of production granular potash fertilizer at present, but technical level is different, causes the life of granular potash fertilizer
It produces and application is still within the stage leaved for development.For China's potash fertilizer market status, if it is possible to develop a granular potash fertilizer
Production process route, properties of product produced stablize, and granule strength can reach country and refer to about the requirement of complex fertilizer
Mark, fertilizer efficiency is high, at low cost, can efficiently use Potash Resources, may advantageously facilitate the development of potash fertilizer industry.
Potassium sulfate is a kind of brittle material, easy to break using granular potassium sulfate made of some adhesives, and is squeezed
The particle surface of forming is rougher to be prone to wear.The present inventor in order to solve problem above, by repetition test, develops this hair
The production method of bright granular potassium sulfate.
[summary of the invention]
[technical problems to be solved]
The object of the present invention is to provide a kind of production methods of potassium sulfate fertilizers particle.
[technical solution]
The present invention is achieved through the following technical solutions.
The present invention relates to a kind of production methods of potassium sulfate fertilizers particle.
The step of production method, is as follows:
A, potassium sulfate and iron oxide red crush
Potassium sulfate or iron oxide red are added separately in electric air drier, dry 80 at 100~105 DEG C of temperature~
Then its temperature is reduced to room temperature, is crushed using pulverizer, then sieved using screening plant, collects grain respectively by 120min
Degree is the kalium slfuricum powder and ferric oxide red powder of 80~150 mesh；
B, potassium sulfate is mixed with iron oxide red
The kalium slfuricum powder and ferric oxide red powder that step A is obtained are added in mixing machine, 5~15min is stirred, obtains
Potassium sulfate and iron oxide red mixture；
C, prepared by binder
It is slowly added to concentrated phosphoric acid into distilled water, stirs evenly, its temperature is reduced to 30 DEG C, obtains the bonding
Agent；
D, it is granulated
The potassium sulfate and iron oxide red mixture that step B is obtained are added in granulating disc, turned in granulating disc
Under conditions of dynamic, the obtained binder of step C be added in granulating disc, spherical shape is made, then through drying, cooling, screening, obtained
To the potassium sulfate fertilizers particle of 2~4mm.
A preferred embodiment of the invention, in step, potassium sulfate, which is dried in electric air drier to water, to be contained
Amount is by weight 10% or less；It is by weight 10% or less that iron oxide red, which is dried in electric air drier to water content,.
According to another preferred method of implementation of the present invention, in step, the electric air drier is selected from box-type drying
Machine, band drier, pneumatic drier or conduction-type drying machine.
According to another preferred method of implementation of the present invention, in step, the pulverizer be selected from high speed disintegrator,
Ball mill or Universalpulverizer.
According to another preferred method of implementation of the present invention, in step, potassium sulfate is being dried extremely using high speed disintegrator
5~10min is crushed under 10% the following conditions of water content.
According to another preferred method of implementation of the present invention, in step, iron oxide red is using high speed disintegrator in drying
5~10min is crushed under to 10% the following conditions of water content.
According to another preferred method of implementation of the present invention, in stepb, the mixing weight of kalium slfuricum powder and ferric oxide red powder
Measuring ratio is 90~100:4~10.
According to another preferred method of implementation of the present invention, in step C, the mixed weight ratio of distilled water and concentrated phosphoric acid is
40~90:14~60.
According to another preferred method of implementation of the present invention, in step D, consumption of binder is potassium sulfate and iron oxide red
The 5%~15% of total weight of the mixture.
According to another preferred method of implementation of the present invention, in step D, globular material is made in granulating disc to exist
Dry 90~120min at 100~105 DEG C of temperature.
The present invention is described in more detail below.
The present invention relates to a kind of production methods of potassium sulfate fertilizers particle.
The step of production method, is as follows:
A, potassium sulfate and iron oxide red crush
Potassium sulfate or iron oxide red are added separately in electric air drier, dry 80 at 100~105 DEG C of temperature~
Then its temperature is reduced to room temperature, is crushed using pulverizer, then sieved using screening plant, collects grain respectively by 120min
Degree is the kalium slfuricum powder and ferric oxide red powder of 80~150 mesh；
In the present invention, the main function of iron oxide red is enhancing granular potassium sulfate intensity.
The iron oxide red that the present invention uses is current market sales of product, such as by the limited public affairs of the double green pigment in Xinxiang City
Take charge of the product sold with trade name ferric oxide red colorant.The potassium sulfate that the present invention uses usually is made in current technical field of fertilizers
Product.
In this step, potassium sulfate is dried to water content as by weight 10% in electric air drier hereinafter, its water
Content is measured according to GB/T 35924-2018 standard method of analysis；Iron oxide red is dried in electric air drier to water content
For by weight 10% hereinafter, its water content is measured according to GB/T 35924-2018 standard method of analysis.
The water content control of potassium sulfate is to ensure that granular potassium sulfate composition is stablized in 10% main purpose below.
The water content control of iron oxide red is to guarantee iron oxide red in granular potassium sulfate in 10% main purpose below
Dosage.
Potassium sulfate or iron oxide red are when drying time is 80~120min in electric air drier respectively, if drying temperature
Lower than 100 DEG C, then potassium sulfate or the composition of iron oxide red in granular potassium sulfate can be reduced；If drying temperature is higher than 105 DEG C,
It will lead to potassium sulfate or iron oxide red agglomeration；Therefore, it is suitable that drying temperature, which is 100~105 DEG C,；
When drying temperature is 100~105 DEG C, if drying time is less than 80min, potassium sulfate or iron oxide red will lead to
It cannot sufficiently dry；If drying time is longer than 120min, potassium sulfate or iron oxide red over-drying can be caused to agglomerate, or wave
Take heat；Therefore, it is reasonable that drying time, which is 80~120min,；
The electric air drier used in production method of the present invention is selected from box drier, band drier, pneumatic conveying drying
Machine or conduction-type drying machine, they are all usually used fertilizer drying equipments in current field of fertilizer production, they are all
Current market sales of product, such as sold by Shanghai laboratory apparatus Co., Ltd., Factory with trade name electric drying oven with forced convection
Box drier, the band drier sold with trade name band drier by Changzhou Jiu Chuan drying equipment Co., Ltd, by
Chengdu Bei Li drying equipment Co., Ltd turns round the pneumatic drier of drum drier sale with trade name, by the graceful drying of Changzhou Butterworth
The conduction-type drying machine that Science and Technology Ltd. is sold with trade name vacuum rake dryer.
In step, dry potassium sulfate or iron oxide red need to be crushed using pulverizer after being reduced to room temperature,
So as to it is subsequent can be sufficiently mixed, be made meet particle as defined in concerned countries.
Potassium sulfate and iron oxide red use respectively high speed disintegrator it is dry to crush 5 under 10% the following conditions of water content~
10min。
The high speed disintegrator that the present invention uses is selected from high speed disintegrator, ball mill or Universalpulverizer, they are all in mesh
Usually used fertilizer disintegrating apparatus in preceding field of fertilizer production, they are all current market sales of products, such as by upper
High speed disintegrator that Hai Feilibo food instruments Co., Ltd is sold with trade name universal high speed disintegrator, by the macro instrument of Qidong City
Device instrument factory with the ball mill of trade name full-automatic planetary ball mill sale, by Jiangyin City outstanding person along Machinery Co., Ltd. with commodity
The Universalpulverizer of name Universalpulverizer sale.
The screening plant that the present invention uses is usually used, current market sales of in current field of fertilizer production
Screening fertilizer equipment.
In the present invention, it is in the basic object of 80~150 mesh ranges with the control of iron oxide red Powder Particle Size by kalium slfuricum powder
So that powder fine grained is come into full contact with, forms good granular potassium sulfate.
B, potassium sulfate is mixed with iron oxide red
The kalium slfuricum powder and ferric oxide red powder that step A is obtained are added in mixing machine, 5~15min is stirred, obtains sulphur
Sour potassium and iron oxide red mixture；
According to the present invention, kalium slfuricum powder and the mixed weight of ferric oxide red powder ratio are 90~100:4~10.
When the amount of ferric oxide red powder is 4~10, if the amount of kalium slfuricum powder less than 90, will lead to sulphur in granular potassium sulfate
Sour potassium mass content is low；If the amount of kalium slfuricum powder is greater than 100, granular potassium sulfate intensity, therefore, kalium slfuricum powder can be reduced
Amount is suitable for 90~100；
When the amount of kalium slfuricum powder is 90~100, if less than 4, it is strong to reduce granular potassium sulfate for the amount of ferric oxide red powder
Degree；If the amount of ferric oxide red powder is greater than 10, potassium sulfate mass content in granular potassium sulfate can be reduced；Therefore, iron oxide red
It is appropriate that the amount of powder, which is 4~10,；
C, prepared by binder
It is slowly added to concentrated phosphoric acid into distilled water, stirs evenly, its temperature is reduced to 30 DEG C, obtains the bonding
Agent；
According to the present invention, the concentrated phosphoric acid is it should be understood that the phosphoric acid that concentration is by weight 83% or more.The present invention
Use concentrated phosphoric acid.
Distilled water and the mixed weight of concentrated phosphoric acid ratio are 40~90:14~60.Distilled water and concentrated phosphoric acid dosage are more than described
Range is all worthless because the caking property of the binder to overrun is low or binder cannot sufficiently with potassium sulfate or
It is iron oxide red to come into full contact with.
D, it is granulated
The potassium sulfate and iron oxide red mixture that step B is obtained are added in granulating disc, turned in granulating disc
Under conditions of dynamic, the obtained binder of step C be added in granulating disc, spherical shape is made, then through drying, cooling, screening, obtained
To the potassium sulfate fertilizers particle of 2~4mm.
In this step, consumption of binder is the 5%~15% of potassium sulfate and iron oxide red total weight of the mixture.Such as
Fruit consumption of binder is potassium sulfate and iron oxide red total weight of the mixture 5% hereinafter, then binder cannot be with potassium sulfate or oxygen
Change iron oxide red powder to come into full contact with, it is low so as to cause granular potassium sulfate intensity；If consumption of binder is potassium sulfate and iron oxide red
15% or more of total weight of the mixture, then granular potassium sulfate water content is excessively high, causes granule roundness low；Therefore, binder is used
Amount is reasonably preferably 8%~12% for the 5%~15% of potassium sulfate and iron oxide red total weight of the mixture.
In this step, be made in granulating disc globular material dry 90 at 100~105 DEG C of temperature~
120min。
When the drying time that globular material is made is 90~120min, if its drying temperature is lower than 100 DEG C, sulfuric acid
K particle drying is insufficient to cause granule strength low；If its drying temperature is higher than 105 DEG C, heating too fast leads to sulfuric acid
K particle is disintegrated；Therefore, it is desirable that its drying temperature, which is 100~105 DEG C,；
When the drying temperature that globular material is made is 100~105 DEG C, if its drying time is lower than 90min, sulphur
Sour k particle drying is insufficient to cause granule strength low；If its drying time is longer than 120min, caking property reduction causes
Granular potassium sulfate is disintegrated；Therefore, it is feasible that its drying time, which is 90~120min,；
Analysis determination is carried out according to GB 20406-2017 " potassium sulfate for agricultural use " standard, is obtained using production method of the present invention
The granular potassium sulfate arrived has following technical characteristics:
50% or more potassium oxide content；
2~4mm of grain diameter；
Granule strength 29.7N
The partial size for the granular potassium sulfate fertilizer for using production method of the present invention to obtain is 2~4mm.In production process of the present invention
Unqualified particle of the partial size of middle generation less than 2mm directly returns to be granulated in pelletizer, and partial size is unqualified greater than 4mm
Particle is returned after crushing crusher machine and is granulated again in pelletizer.
Certainly, people can also determine the particle size range of its potassium sulfate fertilizers particle according to needs of production.
The potassium oxide content highest for the granular potassium sulfate fertilizer for using production method of the present invention to obtain can achieve with weight
Meter 44.6%.If necessary to produce low content granular potassium sulfate fertilizer, people can add some fillers toward this fertilizer, such as
Secondary and micro-element fertilizers, organic fertilizer, zeolite powder, attapulgite or other fertilizer additives.
It is determined by optical microphotograph sem observation, the granular potassium sulfate fertilizer product partial size produced using production method of the present invention
Uniformly, particle rounding, surface are smooth；Analysis determination is carried out according to compound fertilizer GB15063-2001 standard, the particle of the product is strong
Degree reaches national granulated fertilizer standard requirements.
[beneficial effect]
The beneficial effects of the present invention are:
The granular potassium sulfate fertilizer product uniform particle sizes produced using production method of the present invention, particle rounding, surface is smooth,
Granule strength reaches national fertilizer nutrient standard.In transport and application, is not in dusting, can be used as compound fertilizer
Raw material.
Present invention process process is short, can Batch Process or continuous production, operating condition is simple, and production cost is low.It is existing
Complex fertilizer manufacturing enterprise can using present invention process produce granular potassium sulfate fertilizer.
[specific embodiment]
It will be better understood that the present invention by following embodiments.
Embodiment 1: the production of potassium sulfate fertilizers particle
The implementation steps of the embodiment are as follows:
A, potassium sulfate and iron oxide red crush
Potassium sulfate is added to the box dry sold by Shanghai laboratory apparatus Co., Ltd., Factory with trade name electric drying oven with forced convection
In dry machine, dry 120min, is surveyed according to potassium sulfate for agricultural use GB/T 20406-2017 standard method of analysis at 100 DEG C of temperature
Fixed, its water content reaches by weight 10.0%；
It is added to trade name ferric oxide red colorant by the long river drying equipment of Changzhou by Shuan Qing pigment Co., Ltd, Xinxiang City
In the band drier that Co., Ltd is sold with trade name band drier, the dry 100min at 102 DEG C of temperature, according to oxidation
The measurement of iron oxide red pigment GB/T 1863-1989 standard method of analysis, its water content are by weight 9.6%,
Then their temperature is reduced to room temperature, using by Shanghai Fei Libo food instruments Co., Ltd with trade name ten thousand
The high speed disintegrator of energy high speed disintegrator sale crushes respectively, is then sieved using screening plant, and collecting granularity respectively is 120 mesh
Kalium slfuricum powder and ferric oxide red powder；
B, potassium sulfate is mixed with iron oxide red
The kalium slfuricum powder and ferric oxide red powder that step A is obtained are added in mixing machine according to weight ratio 90:10, are stirred
5min obtains potassium sulfate and iron oxide red mixture；
C, prepared by binder
It is dense for by weight 90% to be slowly added to concentration into distilled water according to weight ratio 40:14 for distilled water and concentrated phosphoric acid
It in phosphoric acid, stirs evenly, its temperature is reduced to 30 DEG C, obtain the binder；
D, it is granulated
The potassium sulfate and iron oxide red mixture that step B is obtained are added in granulating disc, turned in granulating disc
Under conditions of dynamic, the obtained binder of step C be added in granulating disc, spherical shape is made, then the drying at 100 DEG C of temperature
90min, cooling, screening obtain the potassium sulfate fertilizers particle that granularity is 2~4mm.
It is detected using the method that present specification describes, the granular potassium sulfate which obtains has following skills
Art characteristic:
Potassium oxide content 50.1%；
2~4mm of grain diameter；
Granule strength 27.1N
Embodiment 2: the production of potassium sulfate fertilizers particle
The implementation steps of the embodiment are as follows:
A, potassium sulfate and iron oxide red crush
Potassium sulfate is added to the belt by being sold by Changzhou Jiu Chuan drying equipment Co., Ltd with trade name band drier
In drying machine, the dry 100min at 102 DEG C of temperature, according to potassium sulfate for agricultural use GB/T 20406-2017 standard method of analysis
Measurement, its water content reach by weight 9.4%；
Added with the iron oxide red that trade name ferric oxide red colorant is sold by Chengdu times by Shuan Qing pigment Co., Ltd, Xinxiang City
Power drying equipment Co., Ltd is turned round with trade name in the pneumatic drier of drum drier sale, dry at 105 DEG C of temperature
120min is measured according to ferric oxide red colorant GB/T 1863-1989 standard method of analysis, its water content is by weight
9.2%；
Then their temperature is reduced to room temperature, using by full-automatic with trade name by Qidong City Hong Hong instrument and equipment factory
The ball mill of planetary ball mill sale crushes, and is then sieved using screening plant, collects the potassium sulfate that granularity is 80 mesh respectively
Powder and ferric oxide red powder；
B, potassium sulfate is mixed with iron oxide red
The kalium slfuricum powder and ferric oxide red powder that step A is obtained are added in mixing machine according to weight ratio 95:4, are stirred
10min obtains potassium sulfate and iron oxide red mixture；
C, prepared by binder
It is dense for by weight 86% to be slowly added to concentration into distilled water according to weight ratio 65:38 for distilled water and concentrated phosphoric acid
It in phosphoric acid, stirs evenly, its temperature is reduced to 30 DEG C, obtain the binder；
D, it is granulated
The potassium sulfate and iron oxide red mixture that step B is obtained are added in granulating disc, turned in granulating disc
Under conditions of dynamic, the obtained binder of step C be added in granulating disc, spherical shape is made, then the drying at 102 DEG C of temperature
120min, cooling, screening obtain the potassium sulfate fertilizers particle that granularity is 2~4mm.
It is detected using the method that present specification describes, the granular potassium sulfate which obtains has following skills
Art characteristic:
Potassium oxide content 50.4%；
2~4mm of grain diameter；
Granule strength 29.4N
Embodiment 3: the production of potassium sulfate fertilizers particle
The implementation steps of the embodiment are as follows:
A, potassium sulfate and iron oxide red crush
Potassium sulfate, which is added to, to be done by Chengdu Bei Li drying equipment Co., Ltd with the air-flow of trade name revolution drum drier sale
In dry machine, dry 80min, is surveyed according to potassium sulfate for agricultural use GB/T 20406-2017 standard method of analysis at 105 DEG C of temperature
Fixed, its water content reaches by weight 9.8%；
It is added to the iron oxide red that trade name ferric oxide red colorant is sold by Shanghai by Shuan Qing pigment Co., Ltd, Xinxiang City
It is dry at 100 DEG C of temperature in the box drier that laboratory apparatus Co., Ltd., Factory is sold with trade name electric drying oven with forced convection
80min, measures according to ferric oxide red colorant GB/T 1863-1989 standard method of analysis, its water content reaches by weight
10.0%；
Then their temperature is reduced to room temperature, using by Shanghai Fei Libo food instruments Co., Ltd with trade name ten thousand
The Universalpulverizer of energy high speed disintegrator sale crushes, and is then sieved using screening plant, collects the sulphur that granularity is 150 mesh respectively
Sour potassium powder and ferric oxide red powder；
B, potassium sulfate is mixed with iron oxide red
The kalium slfuricum powder and ferric oxide red powder that step A is obtained are added in mixing machine according to weight ratio 100:7, are stirred
15min obtains potassium sulfate and iron oxide red mixture；
C, prepared by binder
It is dense for by weight 88% to be slowly added to concentration into distilled water according to weight ratio 90:60 for distilled water and concentrated phosphoric acid
It in phosphoric acid, stirs evenly, its temperature is reduced to 30 DEG C, obtain the binder；
D, it is granulated
The potassium sulfate and iron oxide red mixture that step B is obtained are added in granulating disc, turned in granulating disc
Under conditions of dynamic, the obtained binder of step C be added in granulating disc, spherical shape is made, then the drying at 105 DEG C of temperature
105min, cooling, screening obtain the potassium sulfate fertilizers particle that granularity is 2~4mm.
It is detected using the method that present specification describes, the granular potassium sulfate which obtains has following skills
Art characteristic:
Potassium oxide content 50.2%；
2~4mm of grain diameter；
Granule strength 28.2N.
Claims (10)
1. a kind of production method of potassium sulfate fertilizers particle, it is characterised in that the step of this method is as follows:
A, potassium sulfate and iron oxide red crush
Potassium sulfate or iron oxide red are added separately in electric air drier, dry 80~120min at 100~105 DEG C of temperature, so
Its temperature is reduced to room temperature afterwards, is crushed using pulverizer, is then sieved using screening plant, collection granularity is 80~150 mesh
Kalium slfuricum powder and ferric oxide red powder；
B, potassium sulfate is mixed with iron oxide red
The kalium slfuricum powder and ferric oxide red powder that step A is obtained are added in mixing machine, 5~15min is stirred, obtains potassium sulfate
With iron oxide red mixture；
C, prepared by binder
It is slowly added to concentrated phosphoric acid into distilled water, stirs evenly, its temperature is reduced to 30 DEG C, obtains the binder；
D, it is granulated
The potassium sulfate and iron oxide red mixture that step B is obtained are added in granulating disc, in granulating disc rotation
Under the conditions of, the obtained binder of step C is added in granulating disc, spherical shape is made, then through drying, cooling, screening, obtain 2~
The potassium sulfate fertilizers particle of 4mm.
2. production method according to claim 1, it is characterised in that in step, potassium sulfate is done in electric air drier
It is dry to water content be by weight under 10% or less；It is by weight that iron oxide red, which is dried in electric air drier to water content,
10% or less.
3. production method according to claim 1 or 2, it is characterised in that in step, the electric air drier is selected from
Box drier, band drier, from box drier, pneumatic drier or conduction-type drying machine.
4. production method according to claim 1, it is characterised in that in step, the pulverizer is selected from high speed powder
Broken machine, ball mill or Universalpulverizer.
5. production method according to claim 1, it is characterised in that in step, potassium sulfate is existed using high speed disintegrator
5~10min is crushed under drying to 10% the following conditions of water content.
6. production method according to claim 1, it is characterised in that in step, iron oxide red uses high speed disintegrator
Dry to 5~10min of crushing under 10% the following conditions of water content.
7. production method according to claim 1, it is characterised in that in stepb, kalium slfuricum powder and ferric oxide red powder
Mixed weight ratio is 90~100:4~10.
8. production method according to claim 1, it is characterised in that in step C, the mixing weight of distilled water and concentrated phosphoric acid
Measuring ratio is 40~90:14~60.
9. production method according to claim 1, it is characterised in that in step D, consumption of binder is potassium sulfate and oxygen
Change the 5%~15% of iron oxide red total weight of the mixture.
10. production method according to claim 1, it is characterised in that in step D, spherical shape is made in granulating disc
Material dry 90~120min at 100~105 DEG C of temperature.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669298A (en) * | 2020-12-24 | 2022-06-28 | 南通泰禾化工股份有限公司 | Preparation method of carbonyl sulfide synthesis catalyst and preparation method of carbonyl sulfide |
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| CN1245156A (en) * | 1999-08-20 | 2000-02-23 | 杨传立 | Potassium sulfate fertilizer containing more trace elements |
| CN1631853A (en) * | 2004-11-26 | 2005-06-29 | 栖霞市宏翔微生物肥料有限公司 | Potassium sulfate composite fertilizer and its production process |
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| CN114669298A (en) * | 2020-12-24 | 2022-06-28 | 南通泰禾化工股份有限公司 | Preparation method of carbonyl sulfide synthesis catalyst and preparation method of carbonyl sulfide |
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| CN109956823B (en) | 2022-01-14 |
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