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Compound fertilizer capable of treating soil pollution

A soil pollution and compound fertilizer technology, which is applied in the production formula and preparation of compound fertilizers, can solve the problems of removing harmful heavy metal elements in the soil, soil compaction, etc., and achieve the effect of controlling heavy metals and avoiding absorption

Active Publication Date: 2015-04-22
CHANGSHA LVFENGYUAN BIOLOGICAL ORGANIC FERTILIZERCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing compound fertilizers mainly contain elements such as nitrogen, phosphorus, and potassium, but do not have the function of removing harmful heavy metal elements in the soil. In addition, long-term use of existing compound fertilizers may cause soil compaction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] 1. Put 3% peat into a Raymond mill and grind it into fine powder, pass through a 500-mesh sieve, and sieve the powder into peat powder, which is ready for use.

[0011] 2. Add 55% urea to the high-speed mixer, then add organic sulfur TMT-15 3% to the mixer, turn on the mixer, control the stirring speed to 1200γ / min, stop stirring after 3 minutes, turn on the mixer, and add sulfur Zinc 3%, ammonium dihydrogen phosphate 25%, potassium chloride 10%, peat powder and diatomaceous earth 1%, continue to stir for 15 minutes, release the material and send it to the DZJ type roller extrusion granulator to process the material For granulation, the particle size of the compound fertilizer is controlled to be Φ4mm, and the granulated material is the compound fertilizer.

Embodiment 2

[0013] 1. Put 3% peat into a Raymond mill and grind it into fine powder, pass through a 500-mesh sieve, and sieve the powder into peat powder, which is ready for use.

[0014] 2. Add 60% urea to the high-speed mixer, then add organic sulfur TMT-15 3% to the mixer, turn on the mixer, control the stirring speed to 900γ / min, stop stirring after 5 minutes, turn on the mixer, and add sulfur Zinc 3%, ammonium dihydrogen phosphate 20%, potassium chloride 10%, peat powder and diatomaceous earth 1%, continue to stir for 15 minutes, release the material and send it to the DZJ type double-roll extrusion granulator to process the material For granulation, the particle size of the compound fertilizer is controlled to be Φ3.5mm, and the granulated material is the compound fertilizer.

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Abstract

The invention belongs to the technical field of chemical industry, and relates to a production formula and manufacturing method of a compound fertilizer. The compound fertilizer is mainly composed of urea, potassium chloride, ammonium dihydrogen phosphate, zinc sulfide, organic sulfur TMT-15, peat and kieselguhr. The compound fertilizer not only contains nitrogen, phosphorus and potassium required by plant growth, but also contains zinc, iron, calcium, magnesium, sodium, silicon, sulfur and other minor elements required by plant production as well as peat capable of improving soil aggregate structure. Besides, the compound fertilizer also contains a complexing agent zinc sulfide capable of being complexed with heavy metals in soil and a chelator organic sulfur TMT-15, which can be combined with mercury, lead, copper, cadmium, nickel, manganese, chromium and other heavy metals in soil to form water-insoluble sulfides, thereby preventing the plants from absorbing the heavy metals in the soil and achieving the goal of treating heavy metals in soil.

Description

technical field [0001] The invention belongs to the technical field of chemical fertilizer manufacturing, and relates to a production formula and a preparation method of a compound fertilizer capable of controlling soil pollution. Background technique [0002] At present, soil pollution in some areas of my country is relatively serious, and heavy metals such as lead, cadmium, and mercury in the soil exceed the standard, which seriously affects the safety of crop production. Due to the increase in industrial pollution and the total use of automobiles, heavy metal dust enters the atmosphere in the form of aerosols, and enters the soil through natural sedimentation and precipitation, causing soil pollution. The pollution along the roads caused by automobile driving is particularly serious. The soil on both sides of the expressway in Jiangsu Province is seriously polluted, and the two sides of the road have become lead-polluted areas. The lead content in vegetables, tea and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05B7/00C05G3/80C05C9/00C05D1/02C05D9/00
Inventor 王崇高
Owner CHANGSHA LVFENGYUAN BIOLOGICAL ORGANIC FERTILIZERCO
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