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Process for producing slow releasing silicon potassium compound fertilizer by potassium feldspar

A technology for compound fertilizer and potassium feldspar, which is applied in the production field of producing silicon-potassium compound fertilizer, can solve problems such as not being developed, and achieve the effects of solving the shortage of potash fertilizer, lowering the roasting temperature and cheap reserves.

Inactive Publication Date: 2006-06-28
SICHUAN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art has not yet developed a slow-release composite silicon-potassium fertilizer that itself contains a variety of plant nutrient components. In addition to direct application, it can also be used as a slow-release coating for quick-acting nitrogen fertilizers such as urea.

Method used

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  • Process for producing slow releasing silicon potassium compound fertilizer by potassium feldspar

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The method for producing slow-release composite silicon-potassium fertilizer with potassium feldspar, the technological process of the present embodiment is as attached figure 1 shown. Potassium feldspar and dolomite ore are crushed to a size of 15 to 30mm, and coke is crushed to a size of 30 to 60mm, and then placed in the feed bin according to the weight ratio of potassium feldspar: dolomite: coke = 1:1.2:2.4 Proceed to the ingredients. In this embodiment, the proportions by weight of potassium feldspar, dolomite and coke can be in the range of 1:0.6-2.0:2.0-2.8. The prepared raw materials are put into a high-temperature reaction furnace for roasting, the roasting temperature is controlled at about 1300°C (range of 1250-1450°C), and the roasting time is about 1 hour. After the roasting is completed, the molten slurry is quenched by impacting with water, cooled to ambient temperature to form a sand-like semi-finished product, and after drying, it is crushed into a po...

Embodiment 2

[0033] The method for producing slow-release compound silicon-potassium fertilizer with potassium feldspar, the process flow of this embodiment is basically as attached figure 1 As shown, only the drying section is missing. Potassium feldspar, dolomite, and serpentine ore are crushed to a size of 5-15 mm, coke is crushed to a size of 10-30 mm, and then potassium feldspar: dolomite: serpentine: coke = 1: 0.6: 0.8: The ratio of parts by weight of 2.5 is batched in the silo. In this embodiment, the proportions by weight of potassium feldspar, dolomite, serpentine and coke can be in the range of 1:0.4-1.2:0.6-1.0:2.2-3.0. The prepared raw materials are put into a high-temperature reaction furnace for roasting, the roasting temperature is controlled at about 1400°C (the range of 1250-1450°C), and the roasting time is about 1.5 hours. After the roasting is completed, the molten slurry is dispersed by air flow for quenching, cooled to ambient temperature to form a sand-like semi-fi...

Embodiment 3

[0035] The method for producing slow-release composite silicon-potassium fertilizer with potassium feldspar, the technological process of the present embodiment is as attached figure 1 As shown, it is basically the same as Example 1. Potassium feldspar, dolomite, serpentine, and gypsum ore are crushed to a size of 15-20mm, coke is crushed to a size of 30-50mm, and then potassium feldspar: dolomite: serpentine: gypsum: coke = 1: The ratio of parts by weight of 1.6:1.8:1.0:2.6 is batched in the silo. In this embodiment, the proportions by weight of potassium feldspar, dolomite, serpentine, gypsum and coke can be in the range of 1: 1.0-1.6: 1.6-2.2: 0.5-2.6: 2.0-2.6. The prepared raw materials are put into a high-temperature reaction furnace for roasting, the roasting temperature is controlled at about 1550°C (1350-1550°C range), and the roasting time is about 2.5 hours. After the roasting is completed, the molten slurry is dispersed with gas and water for quenching, cooled to ...

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Abstract

The invention discloses a method using potash feldspar to produce slow release compounding silicon potash fertilizer. It uses potash feldspar, dolomite or / and serpentine, carbon as raw material. After mixing, heating to melting state to take baking reaction, cooling to natural temperature to form sand form semi-product after quenching, drying and grinding, the slow release compounding silicon potash fertilizer is gained. The invention would replace potash fertilizer and could use directly. The method has short technology process, low cost and is easy to produce.

Description

1. Technical field [0001] The invention relates to a production method of silicon-potassium compound fertilizer, more specifically, relates to a production method of producing silicon-potassium compound fertilizer by using a feldspar as raw material. 2. Background technology [0002] Crop growth mainly requires 16 essential nutrients, among which potassium ranks third in terms of importance. In China's agricultural fertilization, the ratio of nitrogen (N), phosphorus (P) and potassium (K) has been out of balance for a long time, which is lower than the reasonable level, especially the imbalance of potassium fertilizer is more serious. The reason is that China has less potash resources that can be directly used to produce potash fertilizers, and cannot produce a large amount of potash fertilizers, so it has to import a large amount from abroad. Taking 1991 as an example, the annual output of potassium fertilizer in the country was only 127,000 tons, which was far from meetin...

Claims

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Application Information

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IPC IPC(8): C05D1/04C05G1/00
Inventor 刘代俊谢克难何泽操汪会云陈述清罗洪波蒋绍志
Owner SICHUAN UNIV
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