Brucite granular fertilizer and its preparation method
A brucite particle and brucite technology, which is applied in magnesium fertilizers, inorganic fertilizers, fertilizer forms, etc., can solve the problems of low content of citric acid-soluble MgO, complicated granulation process, large dust environment, etc. and water-soluble MgO content, good disintegration, and the effect of reducing dust pollution and waste
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Embodiment 1
[0027] a, material mixing: take 970 kg of brucite powder with a particle size of 80 mesh and a mass content of citrate-soluble MgO of 57% and 30 kg of natural magnesium sulfate powder with a particle size of 80 mesh and a mass content of water-soluble MgO of 22%, add them to the mixer and stir for 10 minutes Mix well.
[0028] b. Granulation: Add the above-mentioned mixed powder into a granulator, add water with 15% of the above-mentioned mixed powder mass as a binder, and carry out granulation; when 70% of the particles in the granulator have reached the requirement of Φ2-4mm, Take out the granulated products from the granulator, screen and classify them with two-layer screens with apertures of 2mm and 4mm, and the qualified products enter the next step, and those with a diameter of less than 2mm are directly returned to the granulator for re-granulation; materials larger than 4mm , return to the granulator to re-granulate after crushing with a pulverizer;
[0029] c. Drying...
Embodiment 2
[0033] Get 990 kilograms of brucite powder with a particle size of 60 orders and a mass content of citrate-soluble MgO of 62% and 10 kilograms of natural magnesium sulfate powder with a particle size of 60 orders and a mass content of water-soluble Mg of 29%, add them to a mixer and stir for 10 minutes to mix evenly; 25% water of the mixed powder mass was used as binder, and brucite granule fertilizer was obtained according to Example 1.
[0034] The test results of the obtained product are: Appearance and particle size: Φ2-4mm spherical particles; 2-4mm aperture sieve pass rate: 100%; Hardness: 4.0kg / cm 2 Disintegration rate: 100%: mass content of citrate-soluble MgO: 62%; mass content of water-soluble MgO: 3%; mass content of water: 0.0%.
Embodiment 3
[0036] Get 870 kilograms of brucite powder with a particle size of 70 orders and a mass content of citrate-soluble MgO of 60% and 130 kilograms of natural magnesium sulfate powder with a particle size of 70 orders and a mass content of water-soluble MgO of 26%, add them to a mixer and stir for 10 minutes to mix; 20% water of the mixed powder quality is used as a binding agent, and the brucite granular fertilizer is obtained according to Example 1, also called mixed bitter soil balls.
[0037] The test results of the obtained product are: appearance and particle size: Φ2-4mm spherical particles; 2-4mm aperture sieve pass rate: 98%; hardness: 2.5kg / cm 2 ; Disintegration rate: 98%: citrate-soluble MgO mass content: 58%; water-soluble MgO mass content 4; water mass content: 1.0%.
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