Anti-caking agent for mineral composite fertilizer and production method and use thereof

The technology of an anti-caking agent and a manufacturing method is applied in the directions of application, fertilization device, fertilizer mixture, etc., and can solve the problems of applicable soil and surrounding environment pollution, low particle forming strength, and difficulty in improving soil, etc. The effect of protecting soil and facilitating crop absorption

Inactive Publication Date: 2009-06-10
XIANGFAN LONGFU MINING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, compound fertilizer anticaking agents are generally chemical synthesis agents, and the disadvantages are: 1. Pollution of the applicable soil and the surrounding environment cau

Method used

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  • Anti-caking agent for mineral composite fertilizer and production method and use thereof
  • Anti-caking agent for mineral composite fertilizer and production method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Raw material ingredients according to the following weight and physical index requirements:

[0033] 1. Use pure natural high-quality talc (telc): 80%; physical index requirements: whiteness ≥ 90%, refractive index: 1.57, dry brightness 85-92%, average particle size 0.25-0.5 μm, relative density 2.70-2.75, Oil-absorbing base 25-35ml / 100g, silicon dioxide content ≥ 61%, magnesium oxide content ≥ 31%;

[0034] 2. Potassium feldspar (KAlSi308): 10%; physical index requirements: K2O.Al2O3.6SiO2 of which K2O 9.55%, Al2O3 above 16%, SiO2 70%, density 2.56g / cm 3 , Mohs hardness: 6, monoclinic crystal system, the color is white, milky white,

[0035] 3. Attapulgie CIay: 5%, physical index requirements: mg023.8% siO 2 52.96%H 2 O19.21%, Mohs hardness 2-3, specific gravity 2.05-2.32; attapulgite clay has cation exchangeability, all kinds of attapulgite clay can exchange calcium ions of 7.5-12.5mmol / 100g, and can exchange magnesium The ion content is 2.5~7.5mmol / 100g. After a...

Embodiment 2

[0039] Raw material batching by following weight ratio:

[0040] Excellent grade talc (telc): 90%; potassium feldspar (KAlSi308): 5%; natural pure white purified attapulgite (Attapulgie CIay) 5%.

[0041] The talc is crushed by dry process, such as figure 1 . Production process: firstly, the screened talc is sent to the hammer crusher for crushing by the feeder; the crushed material enters the Raymond mill for fine grinding through the bucket elevator and vibrating feeder; the finely ground The talcum powder enters the jet mill for ultra-fine crushing, and is collected by a cyclone collector. The final product fineness can reach 500-5000 mesh (d 97 =30-5um). The calcining temperature of talc is 600-1200℃, and the potassium feldspar and attapulgite after mineral processing and purification are respectively crushed to 2-10 microns, and then finely classified to 500-2500 mesh; then the potassium feldspar, attapulgite Put the rod stones into a continuous vortex powder surface mo...

Embodiment 3

[0043] Raw material batching by following weight ratio:

[0044] Use pure natural high-grade talc: 85%; potassium feldspar (KAlSi308): 10%, illite: 5%.

[0045] Production process: the high-speed mechanical impact ultra-fine powder ore process of talc is as follows: figure 2 . First, the selected high-quality talc blocks are crushed to 8mm by a hammer crusher, and then directly fed into a high-speed mechanical impact ultrafine pulverizer. The pulverized products are classified by a turbine fine classifier and collected by a cyclone collector. The coarse-grained products after classification can be returned to the mill or used as products alone; the modification mainly adopts dry modification process; it is calcined in a continuous vortex powder surface modification machine (SLG type). The calcining temperature is generally 600-1200°C. Within this temperature range, the higher the temperature, the higher the whiteness of the calcined talc, and the calcined whiteness can reac...

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Abstract

The invention provides a mineral composite fertilizer anti-caking agent. The anti-caking agent comprises the following raw materials by weight percentage: 80 to 90 percent of talc, and 10 to 20 percent of additives which comprises potash feldspar, attapulgite and/or illite. The anti-caking agent is obtained through mineral dressing and purification, fine grinding and superfine grinding, surface modification and mixing preparation. The anti-caking agent is applied to the composite fertilizer, can delay the caking time of the composite fertilizer, improve the air permeability and bulkiness of the applied soil, prolong the fertilizer effect and facilitate the growth of crops. Compared with the prior art, the anti-caking agent also has the advantages of good anti-caking performance, simple processing, convenient use method, low cost, pure naturalness, environmental protection, no pollution, long fertilizer effect, and the like.

Description

technical field [0001] The invention relates to an anti-caking agent for compound fertilizer. The present invention also relates to a manufacturing method of the anti-caking agent and its application in compound fertilizers. Background technique [0002] In the prior art, anti-caking agents for compound fertilizers are generally chemical synthetic agents, which have the following disadvantages: 1. Different procedures cause pollution to the applicable soil and the surrounding environment. Second, the cost is high. 3. The pellet forming strength is low, the fertilizer effect is short, and it is not easy to improve the soil or be absorbed by crops. 5. Poor anti-caking performance. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the existing technology and provide a mineral compound fertilizer anti-caking that is simple in processing, low in use cost, good in anti-caking performance, purely natural ...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 赵卓成
Owner XIANGFAN LONGFU MINING IND
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