Preparation method of carbon-based compound slow-release fertilizer

A slow-release fertilizer, carbon-based technology, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve problems such as ineffective utilization of straw, and achieve the effect of providing phosphorus utilization, simple production process, and increasing yield.
CN102964166AActive Publication Date: 2013-03-13克拉玛依市奥峰环保科技有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
克拉玛依市奥峰环保科技有限责任公司
Publication Date
2013-03-13

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Abstract

The invention provides a preparation method of a carbon-based compound slow-release fertilizer. Raw materials comprise, by weight, 5 to 10 parts of straw biological black carbon, 2 to 5 parts of pyroligneous liquor, 21 to 34 parts of enzyme-free bacteria chicken manure, 10 to 15 parts of bone meal, 18 parts of potassium sulfate, 22 to 24 parts of ammonium biphosphate, 11 to 12 parts of large-granule urea and 2 to 5 parts of water. The preparation method comprises putting the crushed enzyme-free bacteria chicken manure, straw biological black carbon, bone meal, large-granule urea, ammonium biphosphate and potassium sulfate into a ZLC-300 type mixer for mixing and stirring, putting them into a KP-300 type organic fertilizer granulator for granulating after uniformly mixing, adding 2 to 5 parts of the pyroligneous liquor and 2 to 5 parts of water while granulating, naturally cooling the resulting to be lower than 28 DEG C after the granulation, and packaging it, wherein the enzyme-free bacteria chicken manure is disinfected for 2 to 3 hours under 2 Pa in a disinfection pot, dried in a tumble dryer, crushed, and sieved by a 60-mesh sieve, with a water content being less than 11 %.
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Description

technical field

[0001] The invention relates to the preparation of compound slow-release fertilizers, in particular to the reasonable disposal of farmyard manure and straw, and the obtained fertilizers and methods have produced outstanding practical effects. Background technique

[0002] With new breakthroughs in chemical fertilizers and pesticides, the output of agricultural and forestry crops has increased year by year accordingly. How to effectively use straw waste in agricultural production and turn waste into treasure has attracted great attention. The carbon-based compound slow-release fertilizer is based on the good matrix adsorption, temperature increase and heat preservation of straw bio-black carbon. Through direct low-temperature carbonization of straw raw materials, the original micropores and high porosity are completely retained. The advantages make it an ideal long-acting slow-release fertilizer coating material.

[0003] As early as 1957, Japan used wood vin...

Claims

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