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A kind of acidic soil conditioner made from iron ore tailings and preparation method thereof

A technology for acid soil and iron ore tailings, applied in the application, organic fertilizer, fertilization device and other directions, to achieve the effect of being conducive to absorption, improving acid soil environment, and improving physical and chemical conditions

Active Publication Date: 2017-04-19
建平盛德日新矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to provide an acidic soil conditioner made from iron ore tailings to improve acidic soil and prevent problems such as grain production reduction and soil degradation caused by its continuous deterioration

Method used

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  • A kind of acidic soil conditioner made from iron ore tailings and preparation method thereof
  • A kind of acidic soil conditioner made from iron ore tailings and preparation method thereof
  • A kind of acidic soil conditioner made from iron ore tailings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The acidic soil conditioner made from iron ore tailings contains the following components by weight: iron ore tailings: 15t, organic fertilizer: 30t, coarse sand: 40t, and stone: 15t. Wherein, the above-mentioned organic fertilizer is corn stalk and pig feces, and the weight ratio of the stalk and feces is 0.2:1, that is, the weight of the above-mentioned straw is 5t, and the weight of the above-mentioned feces is 25t. Described stone material is limestone and dolomite, and its weight ratio of limestone and dolomite is 0.2:1, namely the weight of above-mentioned limestone is 2.5t, and the consumption of above-mentioned dolomite is 12.5t.

[0041] Described straw is pulverized to 2mm, described iron ore tailings particle size and its weight percentage are: 0.3-0.6mm: 1%, 0.15-0.3mm: 70%, 0.075-0.15mm: 10%, 0-0.075mm : 19%; the particle size of the coarse sand and its weight percentage are: 1mm-4mm: 1%, 0.6-1mm: 40%, 0.1-0.6mm: 49%, 0-0.1mm: 10%; the The particle size an...

Embodiment 2

[0051] The straw is crushed to 4mm, the iron ore tailings particle size and its weight percentage are: 0.15-0.3mm: 50.7%, 0.075-0.15mm: 20.7%, 0-0.075mm: 28.6%; The particle size of sand and its weight percentage are: 0.6-1mm: 30.5%, 0.1-0.6mm: 52.6%, 0-0.1mm: 16.9%; the particle size and weight percentage of the limestone and dolomite are: 1mm-4mm : 0.8%, 0.6-1mm: 48.2%, 0.1-0.6mm: 42.1%, 0-0.1mm: 8.9%.

[0052] The iron ore tailings contain the following components by weight: SiO 2 : 65.3%, Al 2 O 3 : 15.5%, Fe 2 O 3 : 10.1%, CaO: 2.1%, MgO: 0.8%, K 2 O: 0.5%, Na 2 O: 0.5%, P: 0.1%, MnO 2 : 0.1%.

[0053] The preparation method of the acid soil conditioner comprises the following steps:

[0054] (1) pulverize the straw to 4mm;

[0055] (2) mix described iron ore tailings, straw, excrement, coarse sand, limestone and dolomite according to the above-mentioned weight ratio, add water 8 times in the mixing process, and then carry out material ripening, that is, at a te...

Embodiment 3

[0059] The straw is crushed to 50mm, the iron ore tailings particle size and its weight percentage are: 0.3-0.6mm: 2.1%, 0.15-0.3mm: 30.2%, 0.075-0.15mm: 50.8%, 0-0.075mm : 16.9%; the particle size and weight percentage of the coarse sand are: 0.6-1mm: 20.1%, 0.1-0.6mm: 65.1%, 0-0.1mm: 14.8%; the particle size and Its weight percentage is: 0.6-1mm: 50.5%, 0.1-0.6mm: 30.7%, 0-0.1mm: 18.8%.

[0060] The iron ore tailings contain the following components by weight: SiO 2 : 67.8%, Al 2 O 3 : 10.6%, Fe 2 O 3 : 8.4%, CaO: 4.4%, MgO: 3.2%, K 2 O: 0.8%, Na 2 O: 0.8%, P: 0.1%, MnO 2 : 0.1%.

[0061] The preparation method of the acid soil conditioner comprises the following steps:

[0062] (1) pulverize the straw to 50mm;

[0063] (2) mix described iron ore tailings, straw, excrement, coarse sand, limestone and dolomite according to the above-mentioned weight ratio, add water 5 times in the mixing process, and then carry out material aging, that is, at a temperature of 50 ℃, ...

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Abstract

The invention discloses an acid soil conditioner prepared from iron ore tailings.The acid soil conditioner comprises, by weight, 15-70 parts of the iron ore tailings, 1-30 parts of organic fertilizer, 1-40 parts of coarse sand and 1-20 parts of building stones, wherein the organic fertilizer comprises straw and excrement, and the building stones comprise either or both of limestone and dolomite.Meanwhile, the invention discloses a preparation method of the acid soil conditioner prepared from the iron ore tailings.By means of the acid soil conditioner, the acid soil environment can be remarkably improved, nutrient substances are provided, the void ratio of soil is increased, water retention capability and nutritional ingredient conveying capability of the soil are improved, it is beneficial to absorption of crops, and the utilization rate of the fertilizer is remarkably raised.

Description

technical field [0001] The invention relates to the field of soil improvement, in particular to an acidic soil conditioner made from iron ore tailings and a preparation method thereof. Background technique [0002] Acidic soil is a general term for soils with low pH value, including red soil, yellow soil, brick red soil, red soil and podzol soil. Acidic soils are widely distributed around the world, mainly in rainy temperate regions, as well as in tropical and subtropical regions. A large area of ​​acidic soil is widely distributed in the south of the Yangtze River in my country, mainly in southern provinces such as Zhejiang, Jiangxi, Fujian, Guangdong, Guangxi, Yunnan and Guizhou, and also in Henan, Hebei, Liaoning and Inner Mongolia in the north of the Yellow River. The total area is about 200 million hectares. [0003] Most acidic soils have a pH of less than 5.5, with a large proportion of them less than 5.0, and some even lower. With the continuous development of my c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05D9/02C05G3/80C05F3/00C05F11/00
Inventor 刘永海毕建平魏忠义石昕皓王孟娟王景学付超麻俐曲静徐文达
Owner 建平盛德日新矿业有限公司
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