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Soil conditioner containing calcium cyanamide and preparation method thereof

A soil conditioner, calcium cyanamide technology, applied in the fields of agriculture, soil conditioner and fertilizer, can solve the problems of reduced fertilizer efficiency, resource consumption, fertilizer efficiency decline, etc., to achieve balanced nitrogen and calcium ratio, significant killing effect, enhanced killing The effect of the extinction effect

Inactive Publication Date: 2012-10-10
SHENZHEN BATIAN ECOTYPIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, based on the chemical reaction of calcium cyanamide mixed with urea and ammonium nitrate, ammonium carbonate will be formed, which will cause ammonia volatilization and significantly reduce fertilizer efficiency.
In the above-mentioned schemes, calcium cyanamide is mixed with urea and other fertilizers in the production process. Therefore, the decline in fertilizer efficiency and resource loss have become a new round of constraints.

Method used

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  • Soil conditioner containing calcium cyanamide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First use a drum dryer to dry the straw powder and agricultural product processing waste to a water content of 6% to 13%, remove free water, take the above-mentioned dried straw powder 10kg, yeast processing wastewater concentrate, monosodium glutamate processing wastewater concentrate, One or more mixtures of tea leaves and furfural total 14kg, crush it into 1-3mm particles with a hammer mill, add 66kg of calcium cyanamide and 10kg of fried food waste oil, soybean oil or both After the mixture is stirred evenly, it is extruded and granulated with a double-roll extruder to make granules of 2 to 4 mm, then dried with a hot air dryer, then cooled with a drum machine, and measured and packaged.

Embodiment 2

[0029] First use a drum dryer to dry the straw powder and agricultural product processing waste to a water content of 6% to 13%, remove free water, take the above-mentioned dried straw powder 7kg, yeast processing wastewater concentrate, monosodium glutamate processing wastewater concentrate, One or more mixtures of tea residue and furfural total 8kg, crush it into 1-3mm particles with a hammer mill, add 72kg of calcium cyanamide and 13kg of fried food waste oil, soybean oil or both After the mixture is stirred evenly, it is extruded and granulated with a double-roll extruder to make granules of 2 to 4 mm, then dried with a hot air dryer, then cooled with a drum machine, and measured and packaged.

Embodiment 3

[0031] First use a drum dryer to dry the straw powder and agricultural product processing waste to a water content of 6% to 13%, remove free water, take the above-mentioned dried straw powder 15kg, yeast processing wastewater concentrate, monosodium glutamate processing wastewater concentrate, One or more mixtures of tea leaves and furfural total 27kg, crush it into 1-3mm particles with a hammer mill, add 50kg of calcium cyanamide and 8kg of fried food waste oil, soybean oil or both After the mixture is stirred evenly, it is extruded and granulated with a double-roll extruder to make granules of 2 to 4 mm, then dried with a hot air dryer, then cooled with a drum machine, and measured and packaged.

[0032] Using the water used in the traditional granulation molding process as a blending agent, to prepare 100kg of calcium cyanamide-containing soil conditioner as a reference example, the following comparison instructions are carried out:

[0033] Example

Carbon-...

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Abstract

The invention relates to a soil conditioner containing calcium cyanamide and a preparation method thereof. The soil conditioner comprises, by weight percentage, 20-60% of carbonaceous organic material, 30-80% of calcium cyanamide, and 5-15% of grease. The preparation method includes: drying the carbonaceous organic material, crushing, well mixing the carbonaceous organic material, the calcium cyanamide and the grease according to the weight percentage, and extruding and granulating. By the preparation method, the problems that the calcium cyanamide particles is easy to resolve in water to generate cyanide ammonia gas causing effective components loss of the calcium cyanamide, and harm to human bodies can be caused by the cyanide ammonia gas can be well solved. When the soil conditioner containing calcium cyanamide is used in soil fumigation, the calcium cyanamide can be reacted with water to generate the cyanide ammonia gas which has evident killing effect to various soil-borne diseases. In the meantime, heat and ammonia generated during fermentation and decomposition process of the carbonaceous organic material can enhance the killing effect of the calcium cyanamide.

Description

Technical field: [0001] The invention relates to the field of agriculture, soil conditioner and fertilizer, in particular to the soil conditioner containing calcium cyanamide. Background technique: [0002] Calcium cyanamide (CaNCN) is slightly soluble in water and has an alkaline reaction. It is usually made of gaseous ammonia and calcium carbide (calcium carbide) in an electric furnace heated to about 1000°C to form a cohesive block, which is crushed and ground after cooling. , and its components also contain calcium oxide, calcium carbide, graphite carbon and other components and a small amount of residual calcium carbide. Calcium cyanamide is used as a chemical fertilizer. The nitrogen contained in it cannot be directly absorbed by plants. It must react with water in the soil to first generate calcium hydroxide and cyanamide. absorb. Among them, the generated cyanamide also has the functions of disinfection, insecticide and disease prevention. [0003] As a soil fumig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/02C05G3/00C05G3/60C05G3/80
Inventor 邵海峰段继贤汪争先罗树生王宗抗唐枫胡华敏
Owner SHENZHEN BATIAN ECOTYPIC ENG
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