CN1769248A - Granule potassium chloride production method - Google Patents

Granule potassium chloride production method Download PDF

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Publication number
CN1769248A
CN1769248A CN 200410067909 CN200410067909A CN1769248A CN 1769248 A CN1769248 A CN 1769248A CN 200410067909 CN200410067909 CN 200410067909 CN 200410067909 A CN200410067909 A CN 200410067909A CN 1769248 A CN1769248 A CN 1769248A
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China
Prior art keywords
potassium chloride
granulation
binding agent
granule potassium
manufacture method
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CN 200410067909
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Chinese (zh)
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CN100361941C (en
Inventor
曹卫宇
陈国华
周志英
潘振玉
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Shanghai Research Institute of Chemical Industry SRICI
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Shanghai Research Institute of Chemical Industry SRICI
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Priority to CNB2004100679095A priority Critical patent/CN100361941C/en
Publication of CN1769248A publication Critical patent/CN1769248A/en
Application granted granted Critical
Publication of CN100361941C publication Critical patent/CN100361941C/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a method for preparation of potassium chloride particles, which contains steps of preparation of adhesive and granulation of powdery potassium chloride. In a hydrolysis autoclave, adding water and starch by ratio, mechanically stirring and heating to hydrolyze, then hydrolysis starch adhesive is prepared. The particle potassium chloride product for blending fertilizer is prepared by: adding powdery potassium chloride into a disc pelletizer or a drum pelletizer, spraying hydrolysis starch adhesive by ratio to granulate, drying and sifting. The method is characterized in that the operation process is simple, the production capability is big, the production cost is low, the grain size of the product is in a large range, the particle is round, and the intensity is high.

Description

A kind of manufacture method of granule potassium chloride
Technical field
The present invention relates to fertilizer production technology, specifically relate to a kind of manufacture method that is used for the granule potassium chloride of bulk blended fertilizer use.
Background technology
Compare with powdered fertilizer, granulated fertilizer has many good physicalies.Do not play dirt when for example loading and unloading, long-term storage is not lumpd, good fluidity, and easy spreading during fertilising, and can realize aerial application.Simultaneously, granulated fertilizer also can play certain slow releasing function, can improve fertilizer utilization ratio.In addition, the fertilizer of the different varieties that granular size is close can carry out direct blending, obtains bulk blended fertilizer (some place is called BB fertilizer) cheaply, has the fertilizer efficiency same with compound manure.Recent two decades comes, and production developments such as granular urea, phosphorus ammonium, compound manure are rapid in the world, and fertiliser granulates changes into and is one of development trend of current chemical fertilizer.
The potash fertilizer of current production is mainly based on powder-like product.Because the inviscid and plasticity-of Repone K itself adopts conventional method to be difficult to granulation.Powdery Repone K is applicable to the production compound manure, but as directly using, then granulated fertilizer obviously is better than powder-like product.The required granule potassium chloride of bulk blended fertilizer factory is granular Repone K or block Repone K at present, and production cost is higher.And block Repone K can cause the component of bulk blended fertilizer inhomogeneous in use, influences quality product and result of use.Therefore, the shortage of particulate state Repone K has become the obstacle of bulk blended fertilizer development.
BB fertilizer is the product that multiple granulated fertilizer is made by mechanical blending.The fertile production technique of BB is simple, and prescription is flexible, and product has adaptability widely.But producing BB fertilizer must need granular potash fertilizer.At present, the granular potash fertilizer of the overwhelming majority all is to be raw material with powdery potash fertilizer, and production technique adopts the roll-type extrusion process to produce.Extruder grain has characteristics such as energy consumption is low, investment is less, limit of power is wide; but; the product particle roundness of extruder grain is poor; the fertilizer size range is difficult for regulating; fertilizer product is not suitable for being used for the production of BB fertilizer, and Squeezinggranulator unit throughput is limited, equipment consumable accessory transposing expense height; maintenance of equipment expense height also is not suitable for scale operation.
Summary of the invention
The objective of the invention is to adopt granulating disc or rotary drum granulator, do highly effective binder, Repone K is carried out granulation with hydrolyzed starch.It has, and operating procedure is simple, and throughput is big, low production cost, product cut size wide ranges, uniform particles rounding, characteristics such as granule strength height.Method of the present invention can be produced the granule potassium chloride of all size that can be used for bulk blended fertilizer by means of the prilling granulators of the multiple fertile manufacturing enterprises of present great majority.
The present invention is achieved in that the manufacture method step of this granule potassium chloride comprises:
(1) the granulation preparation of hydrolysis starch adesive: in hydrolytic reaction pot, add entry and starch in proportion, under the mechanical stirring, be heated to 50~120 ℃ and be hydrolyzed, constant temperature was kept 15~180 minutes, was made for the hydrolyzed starch binding agent of 0.5~20 weight %,
(2) the powdery Repone K of the granulation of powdery Repone K: fineness≤0.25mm joins granulation in granulating disc or the rotary drum granulator; the material bed tempertaure is controlled at 30~110 ℃; spray into the hydrolyzed starch binding agent of counting 0.2~10 weight % with butt in proportion; the spraying temperature of hydrolyzed starch binding agent is controlled at 20~90 ℃; the granulation balling-up; drying, screening makes the granule potassium chloride finished product.
Hydrolyzed starch binding agent among the present invention adopts wheat, corn, jowar, potato class, the preparation of beans native starch class.
The hydrolyzed starch binding agent preferred concentration of making among the present invention is 3~6 weight %.
Among the present invention during granulation the hydrolyzed starch binding agent be preferably 0.4~1.5 weight % in the consumption of butt.
Defective particle in the production process of the present invention can be used as returning charge and repeats granulation, and the weight ratio of returning charge and raw material is 0.5~4: 1.
The particle diameter of the granule potassium chloride that the bulk blended fertilizer that makes among the present invention is required is 2~4.5mm.
The Repone K granulation can be adopted disk or roller equipment among the present invention, and is identical with conventional compound manure production equipment.If raw materials for production are small-particle Repone K, need carry out pre-treatment earlier, be crushed to less than 0.25mm; If raw materials for production are powdery Repone K, directly processing treatment can be produced granule potassium chloride.
The used binding agent of method of the present invention is the hydrolyzed starch binding agent, can not produce any adverse influence to using of Repone K.
The granule potassium chloride that the inventive method is produced can be used for producing the multiple bulk blended fertilizer of high, medium and low concentration.
The present invention compared with prior art has the following advantages:
1, method of the present invention has that technical process is short, easy and simple to handle, production efficiency is high, energy consumption is low and characteristics such as reduced investment.
2, the granule potassium chloride product that adopts the inventive method to produce, granule strength is big, the fertiliser granulates rounding, surface lubrication does not have any caking phenomenon.
3, product of the present invention can be made into the compound manure that contains various trace elements, to adapt to the requirement of Different Crop, soil, weather.
Embodiment
In order to implement the present invention better, the present invention is further illustrated now to enumerate the following example, and still, embodiment is not a limitation of the present invention.
Embodiment 1
W-Gum 60 grams and 940 gram water mix, and mechanical stirring is heated to 90 ℃, constant temperature 60 minutes, and making concentration is the hydrolyzed starch binding agent of 6 weight %.
Exsiccant powdery Repone K 500 grams join in the granulating disc; the material bed tempertaure is controlled at 70 ℃; spraying into temperature is the hydrolyzed starch binding agent of 60 ℃ the above-mentioned concentration that the prepares 6 weight % of 120 grams; the granulation balling-up; again through super-dry, screening; be cooled to normal temperature, obtain qualified granule potassium chloride product 320 grams.
Embodiment 2
Wheat starch 30 grams and 970 gram water mix, and mechanical stirring is heated to 95 ℃, constant temperature 45 minutes, and making concentration is the hydrolyzed starch binding agent of 3 weight %.
In rotary drum granulator, add granularity and be not more than 60 purpose particulate Repone K, 230 grams; the material bed tempertaure is controlled at 30 ℃; spray into hydrolyzed starch binding agent 86 grams of the above-mentioned concentration for preparing 3 weight %; spraying temperature is controlled at 80 ℃, and the granulation balling-up is again through super-dry, screening; obtaining particle diameter is the qualified particle of 230 gram granule potassium chlorides of 2~4.4mm; particle diameter uses as returning charge through pulverizing the back greater than 4.5mm with less than the particle of 2mm, and the returning charge ratio is 1.13: 1.
Embodiment 3
Meet embodiment 2; returning charge 440 grams join in the rotary drum granulator with particulate Repone K 250 grams, and the material bed tempertaure is controlled at 80 ℃, hydrolyzed starch binding agent 85 grams of 3 weight % of spraying embodiment 2 preparations; spraying temperature is controlled at 80 ℃; the granulation balling-up, drying, screening; obtaining particle diameter is the qualified particle of 250 gram granule potassium chlorides of 2~4.4mm; particle diameter uses as returning charge through pulverizing the back greater than 4.5mm with less than the particle of 2mm, and the returning charge ratio is 1.76: 1.
Embodiment 4-11
The preparation method of hydrolyzed starch binding agent and the prilling process of Repone K are with embodiment 2, dewater and the numerical value of dosage, hydrolysis temperature, constant temperature time, material bed tempertaure, binding agent dosage, spraying temperature and the returning charge ratio of starch sees Table in 1 outside the data, all the other operations and parameter are with embodiment 2.
Table 1
Embodiment The hydrolyzed starch adhesive preparation The granulation of powdery Repone K
Starch g Water g Hydrolysis temperature ℃ Constant temperature time min Material bed tempertaure ℃ Binding agent dosage weight % (butt meter) Spraying temperature ℃ The returning charge ratio
4 5 995 50 180 110 0.2 20 4∶1
5 10 990 90 130 90 0.5 30 3.5∶1
6 20 980 95 135 85 0.5 40 3.5∶1
7 5 995 120 15 70 1.0 50 3∶1
8 10 990 120 20 70 2.0 50 3∶1
9 5 995 110 25 60 5.0 60 2.5∶1
10 100 900 120 40 50 8.0 80 1∶1
11 200 800 120 105 50 10 90 0.5∶1

Claims (6)

1, a kind of manufacture method of granule potassium chloride is characterized in that the step of this method comprises:
(1) the granulation preparation of hydrolysis starch adesive: in hydrolytic reaction pot, add entry and starch in proportion, under the mechanical stirring, be heated to 50~120 ℃ and be hydrolyzed, constant temperature was kept 15~180 minutes, was made for the hydrolyzed starch binding agent of 0.5~20 weight %,
(2) the powdery Repone K of the granulation of powdery Repone K: fineness≤0.25mm joins granulation in granulating disc or the rotary drum granulator; the material bed tempertaure is controlled at 30~110 ℃; spray into the hydrolyzed starch binding agent of counting 0.2~10 weight % with butt in proportion; the spraying temperature of hydrolyzed starch binding agent is controlled at 20~90 ℃; the granulation balling-up; drying, screening makes the granule potassium chloride finished product.
2, the manufacture method of granule potassium chloride according to claim 1 is characterized in that described hydrolyzed starch binding agent adopts wheat, corn, jowar, potato class, the preparation of beans native starch class.
3, the manufacture method of granule potassium chloride according to claim 1 is characterized in that the hydrolyzed starch binding agent preferred concentration of making is 3~6 weight %.
4, the manufacture method of granule potassium chloride according to claim 1 preferably sprays into the hydrolyzed starch binding agent of counting 0.4~1.5 weight % with butt when it is characterized in that granulation.
5, the manufacture method of granule potassium chloride according to claim 1, when it is characterized in that granulation, defective particle is reused as returning charge, and the weight ratio of returning charge and raw material is 0.5~4: 1.
6, the manufacture method of granule potassium chloride according to claim 1 is characterized in that the particle diameter of the granule potassium chloride that makes is 2~4.5mm.
CNB2004100679095A 2004-11-05 2004-11-05 Granule potassium chloride production method Expired - Fee Related CN100361941C (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNB2004100679095A CN100361941C (en) 2004-11-05 2004-11-05 Granule potassium chloride production method

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CN100361941C CN100361941C (en) 2008-01-16

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792334A (en) * 2010-02-10 2010-08-04 吉林市博达钾肥有限公司 Spherical potassium chloride particle and preparation method thereof
CN102690143A (en) * 2012-03-28 2012-09-26 河南力浮科技有限公司 Method for producing granular potassium chloride
CN102718601A (en) * 2012-07-10 2012-10-10 湖北富邦科技股份有限公司 Large circular potassium chloride granule granulating auxiliary agent and preparation method
CN102765994A (en) * 2012-08-15 2012-11-07 上海化工研究院 Method for preparing granular potash fertilizer
CN102898231A (en) * 2012-10-09 2013-01-30 湖北富邦科技股份有限公司 Big rounded-grain nitrogen potassium chlorine based binary compound fertilizer and preparation method
CN103553800A (en) * 2013-10-31 2014-02-05 湖北富邦科技股份有限公司 Production method of high-concentration potassium chloride pellet
CN104341228A (en) * 2013-07-31 2015-02-11 深圳市芭田生态工程股份有限公司 A potassium chloride particle fertilizer and a preparing method thereof
CN104355778A (en) * 2014-09-26 2015-02-18 成都新柯力化工科技有限公司 Potassium fertilizer granules and granulating method thereof
CN105481532A (en) * 2015-02-13 2016-04-13 荆门市万泰机械有限公司 Multidimensional extruding granulation method based on addition of organic binder and apparatus thereof
CN108424286A (en) * 2018-05-30 2018-08-21 江苏盛禾资源环境科技有限责任公司 A kind of prilling process of uniform particle sizes' potash fertilizer
CN109678608A (en) * 2019-02-19 2019-04-26 安徽瑞虎肥业有限公司 A kind of biomass fertilizers fertilizer-keeping agent and preparation method thereof
CN113004081A (en) * 2021-04-23 2021-06-22 湖北富邦科技股份有限公司 Preparation method of instant drying-free round particle potash fertilizer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1096264A1 (en) * 1982-11-15 1984-06-07 Институт общей и неорганической химии АН БССР Method for producing granulated potassium fertilizers
SU1567558A1 (en) * 1987-09-14 1990-05-30 Институт общей и неорганической химии АН БССР Method of obtaining granulated complex fertilizer
CN1187116C (en) * 2000-11-30 2005-02-02 南化集团研究院 Process for preparing granular fertilizer
CN1218908C (en) * 2003-03-10 2005-09-14 铜陵化学工业集团有限公司 Potassium chloride united pelleting process

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792334A (en) * 2010-02-10 2010-08-04 吉林市博达钾肥有限公司 Spherical potassium chloride particle and preparation method thereof
CN102690143A (en) * 2012-03-28 2012-09-26 河南力浮科技有限公司 Method for producing granular potassium chloride
CN102718601B (en) * 2012-07-10 2014-06-18 湖北富邦科技股份有限公司 Large circular potassium chloride granule granulating auxiliary agent and preparation method
CN102718601A (en) * 2012-07-10 2012-10-10 湖北富邦科技股份有限公司 Large circular potassium chloride granule granulating auxiliary agent and preparation method
CN102765994A (en) * 2012-08-15 2012-11-07 上海化工研究院 Method for preparing granular potash fertilizer
CN102898231A (en) * 2012-10-09 2013-01-30 湖北富邦科技股份有限公司 Big rounded-grain nitrogen potassium chlorine based binary compound fertilizer and preparation method
CN102898231B (en) * 2012-10-09 2014-10-22 湖北富邦科技股份有限公司 Big rounded-grain nitrogen potassium chlorine based binary compound fertilizer and preparation method
CN104341228A (en) * 2013-07-31 2015-02-11 深圳市芭田生态工程股份有限公司 A potassium chloride particle fertilizer and a preparing method thereof
CN103553800A (en) * 2013-10-31 2014-02-05 湖北富邦科技股份有限公司 Production method of high-concentration potassium chloride pellet
CN103553800B (en) * 2013-10-31 2014-12-31 湖北富邦科技股份有限公司 Production method of high-concentration potassium chloride pellet
CN104355778A (en) * 2014-09-26 2015-02-18 成都新柯力化工科技有限公司 Potassium fertilizer granules and granulating method thereof
CN105481532A (en) * 2015-02-13 2016-04-13 荆门市万泰机械有限公司 Multidimensional extruding granulation method based on addition of organic binder and apparatus thereof
CN108424286A (en) * 2018-05-30 2018-08-21 江苏盛禾资源环境科技有限责任公司 A kind of prilling process of uniform particle sizes' potash fertilizer
CN109678608A (en) * 2019-02-19 2019-04-26 安徽瑞虎肥业有限公司 A kind of biomass fertilizers fertilizer-keeping agent and preparation method thereof
CN113004081A (en) * 2021-04-23 2021-06-22 湖北富邦科技股份有限公司 Preparation method of instant drying-free round particle potash fertilizer

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