Acid soil conditioner prepared from iron ore tailings and preparation method of acid soil conditioner

A technology for acidic soil and iron ore tailings, applied in the direction of application, organic fertilizer, fertilization device, etc., to achieve the effect of increasing utilization rate, improving transportation capacity, and improving acidic soil environment

Active Publication Date: 2016-07-20
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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  • Acid soil conditioner prepared from iron ore tailings and preparation method of acid soil conditioner
  • Acid soil conditioner prepared from iron ore tailings and preparation method of acid soil conditioner
  • Acid soil conditioner prepared from iron ore tailings and preparation method of acid soil conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

Embodiment 2

[0051] The straw is crushed to 4mm, the particle size and weight percentage of the iron ore tailings are: 0.15-0.3mm: 50.7%, 0.075-0.15mm: 20.7%, 0-0.075mm: 28.6%; The particle size and weight percentage of sand 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] Described iron ore tailings comprise the following components by weight percentage: 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 described acidic soil conditioner comprises the following steps:

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

[0055] (2) Mix the iron ore tailings, straw, feces, coarse sand, limestone and dolomite according to the above weight ratio, add water in 8 times during the mixing process, and then carry out material slaking, that i...

Embodiment 3

[0059] The straw is crushed to 50mm, and the particle size and weight percentage of the iron ore tailings 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 percent 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 weight percentage of the limestone and dolomite Its weight percentage is: 0.6-1mm: 50.5%, 0.1-0.6mm: 30.7%, 0-0.1mm: 18.8%.

[0060] Described iron ore tailings comprise the following components by weight percentage: 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 described acidic soil conditioner comprises the following steps:

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

[0063] (2) Mix the iron ore tailings, straw, excrement, coarse sand, limestone and dolomite according to the above weight ratio, add water in 5 times during the mixing process, an...

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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 improver made from iron ore tailings and a preparation method thereof. Background technique [0002] Acidic soil is a general term for low pH soil, including red soil, yellow soil, brick red soil, red soil and podzol. Acidic soils are widely distributed in the world, mainly in rainy temperate regions and 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 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 percentage of them less than 5.0 and some even lower. With the continuous development of my country's economy and society, the pressure on the environment i...

Claims

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Application Information

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Patent Type & Authority Applications(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
Owner 建平盛德日新矿业有限公司
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