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A kind of soil conditioner and preparation method thereof

A technology of soil conditioner and bentonite, which is applied in the field of farmland soil improvement, can solve the problems that the quality and safety of agricultural products are difficult to be guaranteed, and achieve the effects of reducing the transfer of heavy metals, reducing the content of heavy metals, and being easy to use

Active Publication Date: 2020-01-14
蒋奇晋 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although there are various soil conditioners on the market that can be used to improve soil quality, their functions are mainly to solve the problems of soil acidification, salinization, compaction, excessive fertilization, etc., and cannot effectively reduce the impact of heavy metal pollution on soil. The negative impact of agricultural products, the quality and safety of agricultural products is still difficult to be guaranteed

Method used

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  • A kind of soil conditioner and preparation method thereof
  • A kind of soil conditioner and preparation method thereof
  • A kind of soil conditioner and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh the following raw materials according to weight ratio: Portland cement clinker 35%, limestone 25%, dolomite 10%, sepiolite 12%, zeolite 5%, bentonite 5%, iron ore 5%, activated carbon 3 %.

[0027] Limestone and dolomite are crushed to a size of 3 to 5 centimeters and then calcined in a kiln to 800°C, and then unloaded and cooled. Crush and grind sepiolite, zeolite, bentonite, iron ore and activated carbon to 80-100 meshes, heat to 100°C, keep warm for 2 hours, and then unload and cool. The material obtained in the above steps is mixed with Portland cement clinker, ground to 100-200 mesh, and sieved to obtain a soil conditioner, which is then inspected, packaged, and put into storage.

[0028] Measure the soil pH and heavy metal content before application, and according to the measurement results, evenly spread 100kg-400kg of the prepared soil conditioner per mu. After 1-2 times of rotary tillage, plant crops after an interval of about 2-5 days.

Embodiment 2

[0030] Weigh the following raw materials according to weight ratio: Portland cement clinker 25%, limestone 20%, dolomite 15%, sepiolite 15%, zeolite 5%, bentonite 10%, iron ore 8%, activated carbon 2 %.

[0031] Limestone and dolomite are crushed into 3-5 cm in size, then calcined in a kiln to 1000°C, and then unloaded and cooled. Crush and grind sepiolite, zeolite, bentonite, iron ore and activated carbon to 80-100 meshes, then heat to 200°C and keep it warm for 1 hour, then unload and cool. The material obtained in the above steps is mixed with Portland cement clinker, ground to 100-200 mesh, and sieved to obtain a soil conditioner, which is then inspected, packaged, and put into storage.

[0032] Measure the soil pH and heavy metal content before application, and according to the measurement results, evenly spread 100kg-400kg of the prepared soil conditioner per mu. After 1-2 times of rotary tillage, plant crops after an interval of about 2-5 days.

Embodiment 3

[0034] Weigh the following raw materials according to weight ratio: Portland cement clinker 10%, limestone 30%, dolomite 30%, sepiolite 6%, zeolite 10%, bentonite 1%, iron ore 3%, activated carbon 10% %.

[0035] Limestone and dolomite are crushed into 3-5cm sizes and then calcined in a kiln to 600°C, then unloaded and cooled. Crush and grind sepiolite, zeolite, bentonite, iron ore and activated carbon to 80-100 meshes, heat to 300°C, keep warm for 0.5 hours, and then unload and cool. The material obtained in the above steps is mixed with Portland cement clinker, ground to 100-200 mesh, and sieved to obtain a soil conditioner, which is then inspected, packaged, and put into storage.

[0036] Measure the soil pH and heavy metal content before application, and according to the measurement results, evenly spread 100kg-400kg of the prepared soil conditioner per mu. After 1-2 times of rotary tillage, plant crops after an interval of about 2-5 days.

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Abstract

The invention relates to a soil conditioner, and the soil conditioner is prepared from the following raw materials by weight: 10%-40% Portland cement clinker, 20%-30% of limestone, 10%-30% of dolomite, 5%-15% of sepiolite, 1%-10% of zeolite, 1%-10% of bentonite, 3%-8% of iron ore and 1%-10% of activated carbon. The invention also relates to a preparation method of the soil conditioner, and the preparation method is as follows: (1) breaking the limestone and the dolomite, calcining in a kiln, discharging and cooling; (2) breaking and grinding the sepiolite, the zeolite, the bentonite, the iron ore and the activated carbon, heating, thermally insulating, discharging and cooling; and (3) mixing the Portland cement clinker with the materials obtained by the step (1) and the step (2), grinding and sieving to obtain the soil conditioner. The soil conditioner can improve soil acidification, inhibit the absorption of heavy metals by crops, and increase crop yield.

Description

technical field [0001] The invention relates to the technical field of farmland soil improvement, in particular to a soil conditioner and a preparation method thereof. Background technique [0002] At present, a large number of industrial activities and excessive application of farmland chemical fertilizers in my country have led to intensified soil acidification. Coupled with the discharge of some industrial wastes, the total and effective content of heavy metals in the soil have increased, resulting in excessive heavy metal content in some crops. Therefore, in 2016, the Ministry of Environmental Protection issued the "Soil Pollution Prevention and Control Action Plan", which determined the farmland soil treatment policy with the overall idea of ​​ensuring the quality and safety of agricultural products. [0003] Although there are a variety of soil conditioners on the market that can be used to improve soil quality, their functions are mainly to solve problems such as soil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/10C09K101/00C09K109/00
CPCC09K17/10C09K2101/00C09K2109/00
Inventor 蒋奇晋吕书记
Owner 蒋奇晋