Method for producing composite particle slow release silicon fertilizer

A production method and composite technology, applied in the direction of fertilizer form, fertilization device, fertilizer mixture, etc., can solve the problems of complex production equipment, long production cycle, easy loss, etc., to reduce agricultural production costs, low production costs, and long production cycle short effect

Active Publication Date: 2008-09-10
MAANSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the existing silicon fertilizer production process, carbon solid acid sodium or sodium hydroxide and potassium hydroxide are generally used for melting reaction of silicon dioxide-containing raw materials. The process is cumbersome, the energy consumption is high, and the equipment investment is large.
Or use silicon-containing silicon dioxide raw materials to grind with liquid sodium hydroxide or potassium hydroxide to accelerate the reaction during grinding, but the silicon fertilizer obtained by this process has low silicon efficiency and is easy to lose. The production equipment is complex and the production cycle is long. The cost is also higher

Method used

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  • Method for producing composite particle slow release silicon fertilizer
  • Method for producing composite particle slow release silicon fertilizer

Examples

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Effect test

Embodiment 1

[0023] Such as figure 1 , figure 2 As shown, the liquid blast furnace slag 2 is poured from the blast furnace slag tank 1 into the tundish 3, and potassium carbonate is transported from the carbonate delivery pipe 4 to the tundish 3 at the same time. The bottom of the tundish is an inclined bottom 3, and the reaction is good. Molten silicon fertilizer utilizes gravity to flow out from outlet 31, and the molten blast furnace slag flow rate that adds in the tundish is 0.1 ton / minute, and when the silicon dioxide content is 33% in the blast furnace slag, the potash conveying capacity of regulating powder solid conveyer is 90kg / min. minute;

[0024] The lower part of the outlet 31 is provided with compressed air 5 and industrial steam 6, and the molten product is sheared by high-pressure air, and the air pressure is 4kg / cm 2 , flow 5m 3 / min, industrial steam 6 can disperse and cool the sheared molten silicon fertilizer at high temperature, and the industrial steam pressure is...

Embodiment 2

[0026] The liquid blast furnace slag 2 is poured from the blast furnace slag tank 1 into the tundish 3, and potassium carbonate is transported from the carbonate delivery pipe 4 to the tundish 3 at the same time. Fertilizer utilizes gravity to flow out from outlet 31, adds the molten blast furnace slag flow velocity 0.17 tons / min in the tundish, when the silicon dioxide content is 33% in the blast furnace slag, the sodium carbonate conveying capacity of adjusting powder solid conveyer is 90kg / min, at The lower part of the outlet 31 is equipped with compressed air 5 and industrial steam 6, and the molten product is sheared by high-pressure air, and the air pressure is 4kg / cm 2 , flow 5m 3 / minute, industrial steam 6 can disperse the sheared molten silicon fertilizer and cool it at high temperature, and the industrial steam pressure is 1.6kg / cm 2 , the flow rate is 90kg / min, and the wet granular silicon fertilizer 7 generated is dried by its own heat in the cooling chamber to ...

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Abstract

The invention discloses a manufacturing method of a composite granular slow-release siliceous fertilizer. The manufacturing method comprises the following: (a) mixing process: liquid blast furnace slag in a slag tank is poured into a tundish at the flow rate between 0.1 and 0.5 ton/minute, and carbonate is continuously fed in the tundish through a pipe at the same time; (b) granulation process: reacted melted siliceous fertilizer flows out from the outlet arranged on the sideface of the tundish under the action of gravity; moreover, the lower part of the tundish is provided with compressed air and industrial steam which blow the melted siliceous fertilizer to a cooling chamber to form wet granular siliceous fertilizer which is finally dried to form dry granular siliceous fertilizer by means of the heat of the wet granular siliceous fertilizer. Compared with the prior art, the manufacturing method, which has short production cycle, low energy consumption, less equipment investment and more than 50 percent reduction in production cost, is easy to realize mass production.

Description

technical field [0001] The invention belongs to a production method of a composite granular slow-release silicon fertilizer, in particular to a production method of a composite granular slow-release fertilizer using blast furnace slag as a raw material. Background technique [0002] The application of soluble silicon fertilizer to crops is helpful for stem growth, can increase lodging resistance and resistance to diseases and insect pests, and has a significant effect on increasing production. Foreign countries have used silicon fertilizer as a conventional fertilizer, and my country is still in its infancy. [0003] In the existing silicon fertilizer production process, carbon solid acid sodium or sodium hydroxide, potassium hydroxide containing silicon dioxide is generally used for melting reaction, the process is cumbersome, the energy consumption is high, and the equipment investment is large. Or use silicon-containing silicon dioxide raw materials to grind with liquid s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05G5/00
Inventor 陈广言丁陈来邱艳生张耀辉张恩
Owner MAANSHAN IRON & STEEL CO LTD
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