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Potassium magnesium fertilizer and its preparation method

A technology of potassium magnesium fertilizer and potassium feldspar, which is applied in the field of fertilizers, can solve the problems of soil compaction, acidity and alkali, small crop absorption, and low crop absorption, and achieve the effect of improving soil structure, changing soil compaction, and broad market prospects

Inactive Publication Date: 2006-06-14
李书礼
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Potassium fertilizer is an indispensable constant fertilizer in the growth process of various crops. According to the soil survey in China, the soil in the whole country is generally deficient in potassium. The Ministry of Agriculture has carried out soil potassium supplementation projects nationwide. The existing technology uses potassium feldspar to be calcined in a blast furnace. Potassium fertilizer not only has high production cost, but also has a small amount of crop absorption; magnesium fertilizer is a necessary medium amount fertilizer in the growth process of various crops. China's soil census shows that magnesium deficiency in the country's soil is becoming more and more serious. The existing technology uses magnesium sulfate as fertilizer. Not only is the price high, but long-term application will cause soil compaction and acid-base imbalance
China's soil census also shows that the soil in 60% of the country is deficient in calcium and silicon, especially in the southern rice planting area and the Central Plains. The existing technology uses quicklime as fertilizer, but the absorption of crops is less

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] The formula embodiment 1 of a kind of potassium-magnesium fertilizer of the present invention adopts the following mineral raw materials in parts by weight: 30% of potassium feldspar, 25% of dolomite, 30% of limestone, and 15% of anthracite; 1-2cm 3 Granular, mixed in proportion, ground into 80-120 mesh powder by ball mill, and made into 0.3-1.5cm by adding water into ball machine 3 The spherical shape is sent to the vertical kiln for calcination, and the temperature is controlled at 1100-1300 ° C. The agglomerated cooked balls are crushed by a crusher and then sent to a ball mill to be ground into a powder of 100-120 mesh. After the powdery product is granulated by a ball forming machine, it is dried and packaged to become a granular finished product.

Embodiment 2

[0009] The formula embodiment 2 of a potassium magnesium fertilizer of the present invention adopts the following mineral raw materials in parts by weight, potassium feldspar 55%, dolomite 20%, limestone 15%, anthracite 10%, and is prepared by the production process of embodiment 1.

Embodiment 3

[0010] The formula embodiment 3 of a potassium magnesium fertilizer of the present invention adopts the following mineral raw materials in parts by weight: 42% of potassium feldspar, 15% of dolomite, 25% of limestone, and 18% of anthracite, prepared according to the production process of embodiment 1.

[0011] In the above formula examples, during the production and preparation, the clinker material was sampled and tested, and it contained K 2 O3.5-8%, containing MgO4.5-8.5%, containing CaO15-25%, containing SiO 2 20-52%.

[0012] This potassium-magnesium fertilizer trial product of the present invention has been tested in the cotton field at Youlipo Base, Hebei Province by Professor Lu XX of China Agricultural University respectively. Reached a significant level; Liu ×× senior agronomist from the Soil and Fertilizer Research Institute of Henan Academy of Agricultural Sciences conducted a random wheat field test in Lilaozhuang, Zhenping County, Henan Province, and the yield w...

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Abstract

The present invention provides a raw material formula of potassium-magnesium fertilizer and its preparation method. It is mainly characterized by that it is a potassium-magnesium fertilizer which has cirtric solubility and contains several elements of potassium, magnesium, calcium and silicon, etc. and is prepared by using mineral raw materials of 30-55% of potash feldspar, 15-25% of magnesian spar and 15-30% of limestone through a í‹two-grinding one-calciningíŒ process.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and relates to a formula of potassium magnesium fertilizer and a preparation method thereof. Background technique [0002] Potassium fertilizer is an indispensable constant fertilizer in the growth process of various crops. According to the soil survey in China, the soil in the whole country is generally deficient in potassium. The Ministry of Agriculture has carried out soil potassium supplementation projects nationwide. The existing technology uses potassium feldspar to be calcined in a blast furnace. Potassium fertilizer not only has high production cost, but also has a small amount of crop absorption; magnesium fertilizer is a necessary medium amount fertilizer in the growth process of various crops. China's soil census shows that magnesium deficiency in the country's soil is becoming more and more serious. The existing technology uses magnesium sulfate as fertilizer. Not only is the pric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05D11/00C05D1/04C05D5/00
Inventor 沙国强梁来福李书礼
Owner 李书礼
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