CN101255078A

CN101255078A - Production method of potassium-containing compound fertilizer

Info

Publication number: CN101255078A
Application number: CNA2008100707661A
Authority: CN
Inventors: 钟菊文
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-14
Filing date: 2008-03-14
Publication date: 2008-09-03

Abstract

The invention discloses a production method of potassium-contained compound fertilizer, which includes the following steps: taking nitrogen fertilizer, phosphate fertilizer and potash fertilizer as major raw materials, wherein the potash fertilizer can entirely or partly use cement kiln dust potash fertilizer; adding acid filler as the raw material to meet the ingredient ratio demand; mixing physically, balling and granulating, drying, packaging product after screening. The product meets the national standard GB15063-2001. This invention can make good use of waste and has effects of low cost and a guaranteed supply of raw materials.

Description

A kind of production method that contains the potassium composite fertilizer

One, technical field

The present invention relates to the chemical fertilizers production method, particularly contain the production method of potassium composite fertilizer.

Two, background technology

Composite fertilizer is one of fertilizer variety of present domestic maximum, product is carried out the GB15063-2001 national standard, it is more than 25% that its principal element N, P, K add up to content, present domestic composite fertilizer production is main raw material with nitrogenous fertilizer, phosphate fertilizer and potash fertilizer all, mix partly stopping composition such as stone flour, soil according to the difference of the fertile concentration of compound again, packaging final prod after physical mixed is carried out balling-up granulation, oven dry and sieved.

The raw material condition of present domestic production of compound fertilizer is: nitrogenous fertilizer has urea, ammonium chloride, sal epsom etc., and phosphate fertilizer has monoammonium phosphate, diammonium phosphate, calcium superphosphate etc., and potash fertilizer mainly is Repone K, vitriolate of tartar.In nitrogen, phosphorus, potassium element, nitrogen raw material all parts of the country all have, phosphorus ore mainly is distributed in the western several provinces of China, and potassium element is the most rare, the vitriolate of tartar that adopts is the reprocessing product of Repone K at present, and Repone K China Qinghai have produce on a small quantity outside, 70% left and right sides dependence on import, main supply country is a Russia and Canadian, China all will spend a large amount of foreign exchange imports every year, not only make the production of compound fertilizer cost high, but also because problems such as traffic often cause locality, seasonal there is lack of raw materials, influences the ordinary production and the supply of chemical fertilizer.

Three, summary of the invention

The purpose of this invention is to provide the production method that contains the potassium composite fertilizer that a kind of raw materials cost is low, be supplied with guarantee.

For reaching above purpose, a kind of production method that contains the potassium composite fertilizer of the present invention, when (1) compound fertilizer is that nitrogen, phosphorus, potassium compound are main raw material with nitrogenous fertilizer, phosphate fertilizer and potash fertilizer when fertile, (2) when compound fertilizer be that nitrogen, potassium compound are main raw material with nitrogenous fertilizer and potash fertilizer when fertile, (3) are phosphorus, are main raw material with phosphate fertilizer and potash fertilizer when the potassium compound is fertile when compound fertilizer; Described potash fertilizer comprises cement kiln ash potassium fertilizer, mixes acid stopping composition again, make to reach the proportioning components requirement, through physical mixed, balling-up granulation, dry, sieve after packaging final prod.

According to containing potassium composite fertilizer manufacturing enterprise particular case, described potash fertilizer raw material can all adopt cement kiln ash potassium fertilizer, also can partly adopt.

Because kiln ash potash fertilizer still has cement characteristics, and major part is strong basicity, so harden when kiln ash potash fertilizer directly the soil big area can occur when using as potash fertilizer, the problem that sticking leaf of ground farm crop and highly basic burn seedling, the present invention is particulate state by the potassium compound fertilizer that contains after processing, can not make soil compaction and surface crops glue leaf after being manured into soil again, the employing of acid stopping composition its highly basic effect that can neutralize, the phenomenon of having avoided highly basic to burn seedling.

Because of all there is distribution in the cement mill in China various places, use technical solution of the present invention, utilize kiln ash potash fertilizer to substitute or the potash fertilizer raw material of part when substituting production of compound fertilizer, can effectively alleviate China's potash fertilizer problem in short supply, save a large amount of foreign exchanges, reduce the composite fertilizer production cost comprehensively, improve production of compound fertilizer business economic benefit, and avoided raw material because of dependence on import causes locality, seasonal there is lack of raw materials, influence the ordinary production of chemical fertilizer and the problem of supply and take place.In addition, manufacture of cement producer dumps as waste product the kiln ash potash fertilizer major part of discharging from fly-ash separator at present, on a small quantity as filler, by implementing the present invention, turn waste into wealth, not only solve the stacking place and the discharge costs problem of refuse, also increased income, really played the effect of increasing income and economizing on spending.

Four, embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.

Embodiment 1: adopt kiln ash potash fertilizer to make potash fertilizer raw material production composite fertilizer fully, the composite fertilizer content of production is nitrogen 12%, phosphorus 5%, potassium 8%:

Raw material: urea (N46.3%), phosphorus one ammonium (contains N11%, P ₂O ₅44%), kiln ash potash fertilizer (contains K ₂O 16%).

It is as follows to prepare burden: 1000 kilograms of every granulation dish blankings, 230 kilograms in urea (N10.65%) wherein, phosphorus one amine 110 kilograms of (N1.21%, P ₂O ₅4.84%) 540 kilograms of (K of kiln ash potash fertilizer, ₂O 8.64%), sour earth filler 120 kg; N, P, K total content are: N11.86%+P4.84%+K8.64%=25.34%.Meet composite fertilizer GB15063 standard-required.

Making step: confected materials put into to contain the granulation dish of going into 1000 kilograms, start disk and be rotated granulation, rotating disk quantizes water spray on one side on one side, time is about 30-40 minute, when forwarding 70% granular size to and being the 1-4.5 millimeter material being sent into air-dry tube carries out air-dry, feeding speed is 3-5 ton (regulating according to furnace temperature and raw material water content) per hour, air-dry to moisture lower concentration 4%, high density 1.5% is sieved when following, making its particle size is that 1-4.5 millimeter ratio reaches 95%, granular even, smooth in appearance.It is back with exsiccant packaging bags, stacking, the sale of dispatching from the factory after check to sieve.

Embodiment 2: partly adopt kiln ash potash fertilizer to make potash fertilizer raw material production composite fertilizer, the composite fertilizer content of production is nitrogen 15%, phosphorus 5%, potassium 10%:

Raw material: urea (N46.3%), phosphorus one ammonium (contains N 11%, P ₂O ₅44%) kiln ash potassium (K, ₂O 12%), Russian Repone K (K ₂O 60%).

Batching: 1000 kilograms of every granulation dish blankings, 350 kilograms in urea (N13.89%), phosphorus one ammonium 110 kilograms of (N1.21%, P ₂O ₅4.84%) 350 kilograms of (K of kiln ash potash fertilizer, ₂O 4.2%), 100 jin of (K of Russian Repone K ₂O6%), 90 kilograms of sour earth stopping composition, N, P, K total content are: N 15.1%+P ₂O ₅4.84%+K ₂O 10.2%=30.14%.

Making step is with embodiment 1.

By the requirement of GB15063, composite fertilizer divides element and two elements.N+P ₂O ₅+ K ₂The O total content is not less than 25%, each indicates that element must not be lower than 4%, but each element this ± 1.5% can support mutually, high benefit is obvious more more for the many more or content of the kiln ash potash fertilizer per-cent that mixes aborning, so nitrogen, phosphorus raw material adopt the high density product when selecting nitrogen, phosphorus, potassium raw material for use as far as possible, so that can mix kiln ash potash fertilizer, and to select neutral raw material and acid filler for use, to reduce product alkalescence more as far as possible.

Adopting the composite fertilizer of kiln ash potash fertilizer production is release and release control fertilizer, helps the dietetic alimentation of most crop, but if should soak in water after 3-6 hour and can use as watering fertilising.

Claims

1, a kind of production method that contains the potassium composite fertilizer, when

(1) compound fertilizer is that nitrogen, phosphorus, potassium compound are main raw material with nitrogenous fertilizer, phosphate fertilizer and potash fertilizer when fertile;

(2) compound fertilizer is that nitrogen, potassium compound are main raw material with nitrogenous fertilizer and potash fertilizer when fertile;

(3) compound fertilizer is that phosphorus, potassium compound are main raw material with phosphate fertilizer and potash fertilizer when fertile;

Mix stopping composition again, make to reach the proportioning components requirement, through physical mixed, balling-up granulation, dry, sieve after packaging final prod, it is characterized in that: described potash fertilizer comprises cement kiln ash potassium fertilizer.