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Silico-calcium magnesium-potassium mineral multielement compound fertilizer and preparation method thereof

A multi-element, silicon-calcium-magnesium technology, applied in the field of mineral multi-element compound fertilizer, can solve the problem of lack of awareness and habit of silicon fertilizer, and achieve the effect of convenient source of raw materials, improving soil structure, and alleviating the lack of potassium fertilizer

Inactive Publication Date: 2010-09-22
NORTHWEST A & F UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although many nutrition experts currently treat silicon as a macro element, silicon is still treated as a trace element traditionally, and there is no awareness and habit of simply applying silicon fertilizer in actual production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The silicon calcium magnesium potassium mineral multi-element compound fertilizer is prepared through the following steps:

[0041] 1) Coarse crushing: The potassium-rich rock, dolomite and limestone are crushed into stones with a particle size of 20-40mm by a jaw crusher, and it is enough for the stones to pass through a 40×40mm screen.

[0042] 2) Fine crushing: Send the three kinds of stones obtained by coarse crushing into the hammer crusher for further crushing, and crush them into fragments with a particle size of 5-10mm, and the fragments can pass through a 10×10mm screen.

[0043] 3) One-time ball milling: use a ball mill to mill the three kinds of fragments obtained by fine crushing, until the fineness is 200 mesh; because the hardness of the three kinds of ore raw materials is different, the soft ones are first ground into the machine, and the hard ones are out of the machine. machine.

[0044] 4) Homogenizing and sieving: The three kinds of stone powders after...

Embodiment 2

[0049] The silicon calcium magnesium potassium mineral multi-element compound fertilizer is prepared through the following steps:

[0050] 1) Coarse crushing: The potassium-rich rock, dolomite and limestone are crushed into stones with a particle size of 20-40mm by a jaw crusher, and it is enough for the stones to pass through a 40×40mm screen.

[0051] 2) Fine crushing: Send the three kinds of stones obtained by coarse crushing into the hammer crusher for further crushing, and crush them into fragments with a particle size of 5-10mm, and the fragments can pass through a 10×10mm screen.

[0052] 3) One-time ball milling: use a ball mill to mill the three kinds of fragments obtained by fine crushing, until the fineness is 250 mesh; because the hardness of the three kinds of ore raw materials is different, the soft ones are first ground into the machine, and the hard ones are out of the machine. machine.

[0053] 4) Homogenizing and sieving: pass the ball-milled three stone pow...

Embodiment 3

[0058] The silicon calcium magnesium potassium mineral multi-element compound fertilizer is prepared through the following steps:

[0059] 1) Coarse crushing: The potassium-rich rock, dolomite and limestone are crushed into stones with a particle size of 20-40mm by a jaw crusher, and it is enough for the stones to pass through a 40×40mm screen.

[0060] 2) Fine crushing: Send the three kinds of stones obtained by coarse crushing into the hammer crusher for further crushing, and crush them into fragments with a particle size of 5-10mm, and the fragments can pass through a 10×10mm screen.

[0061] 3) Primary ball milling: respectively mill the three kinds of fragments obtained by finely crushing with a ball mill until the fineness is 200 mesh.

[0062] 4) Homogenizing and sieving: the three kinds of stone powders after ball milling are sieved three times through 85-mesh sieves, so that each stone powder is stirred evenly.

[0063] 5) Forming into balls: In terms of mass parts, ...

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Abstract

The invention discloses silico-calcium magnesium-potassium mineral multielement compound fertilizer and a preparation method thereof. The mineral multielement compound fertilizer is a water-insoluble dissolving resisting fertilizer prepared based on potassium-rich rock and comprises microelement potassium, secondary element silicon, calcium, magnesium and multiple trace elements, wherein the mass fraction of potassium oxide is larger than or equal to 8%; the total mass fraction of the silica, the calcium oxide and the magnesium oxide is larger than or equal to 5%; the mass fraction of water is less than or equal to 3%; and simultaneously the trace elements are considered. The silico-calcium magnesium-potassium mineral multielement compound fertilizer is the water-insoluble dissolving resisting fertilizer and is characterized by non-infiltration, non-infiltration and non-loss, can not cause the acidification, alkalization and hardening of the soil after being used, can be used as the base fertilizer or top application, and is of great benefit to improving the soil structure and increasing the efficient nutrition components.

Description

technical field [0001] The invention belongs to the technical field of mineral multi-element compound fertilizers, and relates to a silicon-calcium-magnesium-potassium mineral multi-element compound fertilizer and a preparation method thereof. Background technique [0002] Potassium-deficient arable land in my country has accounted for 56% of the total arable land, and insufficient potassium fertilizer has become one of the restrictive factors for agricultural development in my country. In the past ten years, my country has relied on potash fertilizer imports for a long time. In 2008, the gap between my country's actual demand for potash fertilizers and domestic production has reached 7.7 million tons. my country's potash fertilizer demand accounts for about 1 / 4 of the world's total output, and the market value will exceed 1.4 billion US dollars. In recent years, the price of imported potash fertilizers has begun to surprise farmers. [0003] According to a research report...

Claims

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Application Information

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IPC IPC(8): C05D11/00
Inventor 李丙智李延荣端木合顺李兴发陈伟星
Owner NORTHWEST A & F UNIV
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