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Method for producing high efficiency multi-element compounded fertilizer

A production method and multi-element technology, applied in urea compound fertilizer, nitrogen fertilizer, potash fertilizer, etc., can solve the problems of limited ability to solve pollution sources, high production cost, and no scale production, so as to prolong the service life and work space, shorten The effect of reducing production cycle and energy consumption

Inactive Publication Date: 2009-03-25
李鑫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Now, many scientific institutes and enterprises have successfully tested some methods of using boron mud, but the results are mostly unsatisfactory.
Either there is secondary pollution; or boron mud is not used as the main production raw material, and the ability to solve pollution sources is limited; or, the production process is complicated, the production cost is too high, or the application of the product is narrow
Therefore, there has been no mass production

Method used

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  • Method for producing high efficiency multi-element compounded fertilizer
  • Method for producing high efficiency multi-element compounded fertilizer
  • Method for producing high efficiency multi-element compounded fertilizer

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] (1) Chemical composition adjustment in boron mud

[0030] Take a certain amount of naturally air-dried boron mud with a water content below 5%, and at room temperature, add 92% concentrated sulfuric acid evenly under constant stirring. At this time, the insoluble magnesium, calcium, boron, iron and free SO 4 2- The ionic reaction makes the pH value of the boron mud finally reach neutral, and the pH value is 6-7. After drying and crushing, it becomes a boron mud-based fertilizer for use;

[0031] Its main chemical reaction formula is:

[0032] CaCO 3 +H 2 SO 4 →CaSO 4 ↓+CO 2 ↑+H 2 o

[0033] MgCO 3 +H 2 SO 4 → MgSO 4 +CO 2 ↑+H 2 o

[0034] (2) Boron adjustment fertilization and granulation

[0035] Take 180 kg of the above-mentioned boron mud base fertilizer, then add 350 kg of urea, 250 kg of monoammonium phosphate, 220 kg of potassium chloride, and 50 kg of humic acid in sequence, mix and granulate, the particle size is 2.00-6.00 mm, and then carry out ...

example 2

[0041] Boron mud base fertilizer in this example is identical with example 1;

[0042] Take 340 kg of the above-mentioned boron mud-based fertilizer, then add 250 kg of urea, 180 kg of monoammonium phosphate, 180 kg of potassium chloride, and 100 kg of humic acid in sequence, mix and granulate, the particle size is 2.00-6.00 mm, and then carry out Drying, sieving, cooling to below 40°C when the water content is less than 4%, and packaging, it is the finished product of multi-element compound fertilizer. The total amount of N, P, K, boron, magnesium, calcium, iron, and humic acid in the finished product Content: 58.82%, of which N, P, and K contents are 33.82% (see Table 3 for details). The selected raw materials are listed in Table 1.

[0043] table 3

[0044]

example 3

[0046] Boron mud base fertilizer in this example is identical with example 1;

[0047] Take 400 kg of the above-mentioned boron mud-based fertilizer, then add 200 kg of urea, 150 kg of monoammonium phosphate, 180 kg of potassium sulfate, and 150 kg of humic acid in sequence, mix and granulate, the particle size is 2.00-6.00 mm, and then dry , sieve, cool to below 40°C when the water content is less than 4%, and pack it, which is the finished product of multi-element compound fertilizer. The total content of N, P, K, boron, magnesium, calcium, iron, and humic acid in the finished product : 58.8%, wherein N, P, K content 27.8% (see Table 4 for details). The selected raw materials are listed in Table 1.

[0048] Table 4

[0049]

[0050] The concrete fertilization method of above-mentioned example 1-3 multi-element compound fertilizer is as follows:

[0051] When used for wheat crops, generally 30-40 kg per mu as base fertilizer, 60% evenly applied when plowing and land pre...

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Abstract

The invention relates to a production method of a high-efficient multielement compound / mixed fertilizer, which comprises the steps: firstly, the adjustment of chemical components in boric sludge is carried out, a certain amount of boric sludge which is naturally withered with the water content less than 5 percent is taken, sulphuric acid of 50 to 98 percent is continuously and evenly added into the sludge while stirring at normal temperature to lead the pH value of the boric sludge to between 6 and 7, a boric sludge base fertilizer is obtained for later use after drying and crushing; and then, the base fertilizer is adjusted towards boric fertilizer and carried out with pelleting: a certain amount of urea, monoammonium phosphate, potassium chloride or potassium sulphate is added into the boric sludge base fertilizer sequentially, then pelleting, drying and sieving are carried out after evenly mixing, the mixture is cooled to below 40 DEG C when the water content is less than 4 percent, at the moment, the pH value is between 6.5 and 7.5, and packing is carried out to get the finished compound / mixed fertilizer. By utilizing the waste residue from the production of borax and carrying out acidizing, insoluble elements of B, Mg, Ca and the like are transformed to soluble substances, thus fundamentally substituting compounds separately added with monomers of Mg, Ca and the like, therefore, the fertilizer is applicable to various crops and soils.

Description

technical field [0001] The invention belongs to the technical field of agricultural compound fertilizers, in particular to a production method of high-efficiency multi-element compound fertilizers using boron mud as a carrier. Background technique [0002] Boron mud is the remaining impurity in the production of boron products. Since boron mud contains alkaline (insoluble) elements such as boron, magnesium, and calcium, the chemical analysis of boron mud shows that its main components include soluble free alkali 4-5 %, containing 25-30% of magnesium carbonate and magnesium oxide, 12-13% of calcium carbonate and calcium oxide, 5-6% of boron, 12-14% of insoluble phosphorus, and a small amount of iron, zinc, manganese, etc. Elements, if not treated, will be lost after stacking or directly scattered in the soil. If it flows to the land, it will endanger the green plants to die, and if it flows to the water, it will harm the aquatic organisms and destroy the ecological balance o...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05D9/02C05C9/00C05B7/00C05D1/02
Inventor 李鑫
Owner 李鑫
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