CN103664356A - Pellet potash fertilizer pelletizing technology - Google Patents
Pellet potash fertilizer pelletizing technology Download PDFInfo
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- CN103664356A CN103664356A CN201310599083.6A CN201310599083A CN103664356A CN 103664356 A CN103664356 A CN 103664356A CN 201310599083 A CN201310599083 A CN 201310599083A CN 103664356 A CN103664356 A CN 103664356A
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Abstract
The invention provides a pellet potash fertilizer pelletizing technology which comprises raw material mixing, raw material smashing, raw material pelletization, pellet drying and cooling, pellet screen separation and other processes in sequence, wherein a binding agent, which is a mixture of calcium carbonate, attapulgite and plant cellulose, is added in the process of raw material mixing; a proper amount of water or a plant cellulose water solution is sprayed in the process of raw material pelletization. Compared with the prior art, the technology has the advantages as follows: the total usage amount of the binding agent is low, and the binding agent is easy to obtain and low in cost, so that the production cost of pellet potash fertilizer is effectively reduced; meanwhile, nutrients of the potash fertilizer are not lost approximately and the quality of the potash fertilizer is high.
Description
Technical field
The present invention relates to a kind of potash fertilizer production technology, relate in particular to a kind of granular potash fertilizer production technology.
Background technology
Compare with powdered fertilizer, granulated fertilizer good physical performance, does not play dirt during handling, long-term storage is not lumpd, good fluidity, and easy spreading during fertilising, and can realize aircraft and broadcast fertilizer, also can play slow releasing function simultaneously, improve the utilization ratio of fertilizer.As the fertilizer of directly using, granulated fertilizer is better than powder-like product.
90% granular potash fertilizer is all that employing powdery potash fertilizer is the roll-type extrusion process that raw material carries out secondary processing in the world.The shortcoming of this method is that the shape of product is irregular particle, need to increase finishing process by the further rounding of particle.Also having the rounded grain potash fertilizer that adopts pellet granulation to produce, is all directly in raw material, to add a large amount of binding agents, has both increased cost, and the potassium oxide content of product significantly reduces (being less than 45%), does not meet the need of market.
The patent No. 201010537269.5 and 201010537286.9 discloses respectively the manufacture method of high density rounded grain potash fertilizer, all utilized the chemical reaction between granulation aid to generate colloidal cpd, and adopt round as a ball granulation, then drying, screening make potassium oxide content and reach as high as more than 60% rounded grain potash fertilizer products.These two inventions have that operating procedure is simple, cost is low, throughput is large, product particle is mellow and full, intensity high.But the gross weight of granulation aid is still larger, accounted for the more than 3% of raw material, unit price is also higher, and the production cost of rounded grain potash fertilizer is still higher.
Summary of the invention
Guaranteeing under the condition that effect of potassium fertilizer and grain roundness are higher, further reduce the production cost of rounded grain potash fertilizer, the invention provides a kind of rounded grain potash fertilizer granulation process, the adhesive for granulating a small amount of, cost is lower is only added in utilization in granular potash fertilizer, to realize, guaranteeing, under the condition of potash fertilizer quality, to reduce the object of rounded grain potash fertilizer production cost.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The invention provides a kind of rounded grain potash fertilizer granulation process, by raw material mixing, raw material crushing, raw material granulation, particle, dry with the process links such as cooling, granule sieving and form successively, it is characterized in that: in described raw material mixed processes link, raw material used is potash fertilizer raw material, calcium carbonate, attapulgite, plant cellulose; In described raw material granulating working procedure link, in granulation, water is sprayed in tablets press.
Further, in described feed proportioning process links, raw materials quality ratio used is followed successively by 1000:(2～6): (2～6): (1～6); In described raw material granulating working procedure link, to the total mass of the water of the use of spraying in tablets press, by the mass ratio of water and potash fertilizer raw material, be (10～12): 100 calculate.
Further, in described feed proportioning process links, raw materials quality ratio used is followed successively by 1000:3:4:3; In described raw material granulating working procedure link, to the total mass of the water of the use of spraying in tablets press, by the mass ratio of water and potash fertilizer raw material, be (10～12): 100 calculate.
Simultaneously, the invention provides another kind of rounded grain potash fertilizer granulation process, by raw material mixing, raw material crushing, raw material granulation, particle, dry with the process links such as cooling, granule sieving and form successively, it is characterized in that: in described raw material mixed processes link, raw material used is potash fertilizer raw material, calcium carbonate, attapulgite; In described raw material granulating working procedure link, in granulation, with the plant cellulose aqueous solution, in tablets press, spray.
Further, in described feed proportioning process links, material rate used is followed successively by 1000:(2～6): (2～6); In described raw material granulating working procedure link, to concentration and the total mass of the plant cellulose aqueous solution of the use of spraying in tablets press, can be 1000:(100～120 by the mass ratio of potash fertilizer raw material, water, plant cellulose): (2～6) calculate.
Further, in described feed proportioning process links, material rate used is followed successively by 1000:3:4; In described raw material granulating working procedure link, to concentration and the total mass of the plant cellulose aqueous solution of the use of spraying in tablets press, can be 1000:(100～120 by the mass ratio of potash fertilizer raw material, water, plant cellulose): 3 calculate.
Principle of work of the present invention: in rounded grain potash fertilizer granulation process, the binding agent of interpolation is the mixture of calcium carbonate, attapulgite, plant cellulose composition.Because the total amount of binding agent is few, easily obtain, low price, thereby effectively reduced rounded grain potash fertilizer production cost.Simultaneously, production technique provided by the invention, potash fertilizer nutrient does not lose substantially, and potash fertilizer quality is good, product circularity can reach 0.8, yield rate 90%, balling ratio 95%, also has that operating procedure is simple, cost is low, throughput is large, product particle is mellow and full, intensity high.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
A rounded grain potash fertilizer granulation process, comprises the following steps:
A, raw material mix: by potash fertilizer raw material, calcium carbonate, attapulgite, plant cellulose, be 1000:(2～6 in mass ratio): (2～6): (1～6) mixes, the mass ratio of optimization is 1000:3:4:3;
B, raw material crushing: in crusher, above-mentioned raw materials is broken into Powdered, granularity 60～100 orders;
C, raw material granulation: the raw material after fragmentation is added into granulating disc or rotary drum granulator, in material rolling process, by different spray nozzles simultaneously in the potash fertilizer raw material rolling evenly spray water carry out granulation, the quality of water, can be 100:(10～12 by the mass ratio of potash fertilizer raw material and water) calculate, wherein the quality of water need to be adjusted depending on the water content in potash fertilizer raw material;
D, particle are dried and cooling, granule sieving: granulation turned and dried 15～25 minutes through mixed fertilizer drying equipment at 180～220 ℃, and cooling under state of nature, granule sieving is made to rounded grain potash fertilizer products.
Embodiment two
A rounded grain potash fertilizer granulation process, comprises the following steps:
A, raw material mix: by potash fertilizer raw material, calcium carbonate, attapulgite, be 1000:(2～6 in mass ratio): (2～6) mix, and the mass ratio of optimization is 1000:3:4;
B, raw material crushing: in crusher, above-mentioned raw materials is broken into Powdered, granularity 60～100 orders;
C, raw material granulation: the raw material after fragmentation is added into granulating disc or rotary drum granulator, in material rolling process, by different spray nozzles, simultaneously to evenly spraying the plant cellulose aqueous solution in the potash fertilizer raw material rolling, carry out granulation, the concentration of the plant cellulose aqueous solution and total mass, can be 1000:(100～120 by the mass ratio of potash fertilizer raw material, water, plant cellulose): (2～6) calculate, the mass ratio of optimizing is 1000:(100～120): 3, wherein the quality of water need to be adjusted depending on the water content difference in potash fertilizer raw material;
D, particle are dried and cooling, granule sieving: granulation turned and dried 15～25 minutes through mixed fertilizer drying equipment at 180～220 ℃, and cooling under state of nature, granule sieving is made to rounded grain potash fertilizer products.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (6)
1. a rounded grain potash fertilizer granulation process, by raw material mixing, raw material crushing, raw material granulation, particle, dry with the process links such as cooling, granule sieving and form successively, it is characterized in that: in described raw material mixed processes link, raw material used is potash fertilizer raw material, calcium carbonate, attapulgite, plant cellulose; In described raw material granulating working procedure link, in granulation, water is sprayed in tablets press.
2. a kind of rounded grain potash fertilizer granulation process according to claim 1, is characterized in that: in described feed proportioning process links, raw materials quality ratio used is followed successively by 1000:(2～6): (2～6): (1～6); In described raw material granulating working procedure link, to the total mass of the water of the use of spraying in tablets press, by the mass ratio of water and potash fertilizer raw material, be (10～12): 100 calculate.
3. a kind of rounded grain potash fertilizer granulation process according to claim 2, is characterized in that: in described feed proportioning process links, raw materials quality ratio used is followed successively by 1000:3:4:3; In described raw material granulating working procedure link, to the total mass of the water of the use of spraying in tablets press, by the mass ratio of water and potash fertilizer raw material, be (10～12): 100 calculate.
4. a rounded grain potash fertilizer granulation process, by raw material mixing, raw material crushing, raw material granulation, particle, dry with the process links such as cooling, granule sieving and form successively, it is characterized in that: in described raw material mixed processes link, raw material used is potash fertilizer raw material, calcium carbonate, attapulgite; In described raw material granulating working procedure link, in granulation, with the plant cellulose aqueous solution, in tablets press, spray.
5. a kind of rounded grain potash fertilizer granulation process according to claim 4, is characterized in that: in described feed proportioning process links, material rate used is followed successively by 1000:(2～6): (2～6); In described raw material granulating working procedure link, to concentration and the total mass of the plant cellulose aqueous solution of the use of spraying in tablets press, can be 1000:(100～120 by the mass ratio of potash fertilizer raw material, water, plant cellulose): (2～6) calculate.
6. a kind of rounded grain potash fertilizer granulation process according to claim 5, is characterized in that: in described feed proportioning process links, material rate used is followed successively by 1000:3:4; In described raw material granulating working procedure link, to concentration and the total mass of the plant cellulose aqueous solution of the use of spraying in tablets press, can be 1000:(100～120 by the mass ratio of potash fertilizer raw material, water, plant cellulose): 3 calculate.
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| CN201310599083.6A CN103664356A (en) | 2013-11-25 | 2013-11-25 | Pellet potash fertilizer pelletizing technology |
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| CN201310599083.6A CN103664356A (en) | 2013-11-25 | 2013-11-25 | Pellet potash fertilizer pelletizing technology |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261903A (en) * | 2014-09-04 | 2015-01-07 | 辽宁鑫水化工集团有限公司 | Method and equipment of processing rounded potassium sulfate grains |
| 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 |
| CN106278609A (en) * | 2016-08-15 | 2017-01-04 | 湖北富邦科技股份有限公司 | A kind of low concentration Multi-functional circular granular potash fertilizer and preparation method |
| CN113105292A (en) * | 2021-04-23 | 2021-07-13 | 湖北富邦科技股份有限公司 | Production method of synergistic potash fertilizer capable of improving yield |
| CN113173817A (en) * | 2021-04-23 | 2021-07-27 | 湖北富邦科技股份有限公司 | Granulating agent special for round granular phosphorus-potassium fertilizer and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261903A (en) * | 2014-09-04 | 2015-01-07 | 辽宁鑫水化工集团有限公司 | Method and equipment of processing rounded potassium sulfate grains |
| 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 |
| CN106278609A (en) * | 2016-08-15 | 2017-01-04 | 湖北富邦科技股份有限公司 | A kind of low concentration Multi-functional circular granular potash fertilizer and preparation method |
| CN113105292A (en) * | 2021-04-23 | 2021-07-13 | 湖北富邦科技股份有限公司 | Production method of synergistic potash fertilizer capable of improving yield |
| CN113173817A (en) * | 2021-04-23 | 2021-07-27 | 湖北富邦科技股份有限公司 | Granulating agent special for round granular phosphorus-potassium fertilizer and application thereof |
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Application publication date: 20140326 |