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Saline-alkali reoccurrence preventing agent prepared from iron tailings, and application thereof in saline-alkali land

A technology of iron tailings and saline-alkali agent, applied in application, land preparation methods, other chemical processes, etc., can solve problems such as secondary pollution of the environment, and achieve the effect of increasing grain production and improving the effect

Active Publication Date: 2013-02-20
ANSTEEL GRP MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If not properly disposed of, it will cause secondary pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Location: Longwang, Nong'an, Jilin Province, 1 Changdi

[0027] 1) First, measure the salinity of the paddy field that has been soaked in water, and the measured pH=10.31;

[0028] 2) According to the pH value of the alkalization degree in the paddy field, the amount of anti-saline alkali agent required for saline-alkali land is 200kg per 1 垧; that is, 120kg of iron tailings sludge, accounting for 60% of the weight ratio %, 70kg of fly ash accounts for 35% of the weight ratio, 6kg of aluminum sulfate accounts for 3% of the weight ratio and 4kg of dimethyl-dipropylene-grade ammonium chloride accounts for 2% of the weight ratio;

[0029] 3) Spread 200 kg saline-alkali land anti-salinization agent evenly on the surface of the paddy field, and immediately use a tractor plow to break up the wet soil and level the soil for stirring. The pH measured after two months is 7.55, basically no Back to alkali, output 6000kg.

Embodiment 2

[0030] Embodiment 2: implementation method is the same as embodiment 1

[0031] Location, Zhenlaiha, Jilin Province,

[0032] The measured pH=9.32, according to the alkalization pH value in the paddy field, the amount of anti-saline-alkali agent required for saline-alkali land is 200kg per 1 m, that is, 100kg of iron tailings sludge (50 %), 90kg of fly ash (45%), 8kg of aluminum sulfate (4%), 2kg of 2kg (1%) of diammonium chloride, and the measured pH=7.55 after two months, there is basically no return to alkali , output 14000kg.

Embodiment 3

[0033] Embodiment 3: implementation method is the same as embodiment 1

[0034] Place, Jilin Province Songyuan Cha dried flowers, implementation method is the same as embodiment 1,

[0035] Measured pH = 10.35, 1 垧, time May 28, 2011

[0036] According to the pH value of the alkalization degree in the paddy field, the amount of anti-saline-alkali agent used in saline-alkali land is 200kg per 1 垧. The difference is that iron tailings sludge is 80kg (40%), powder Coal ash 110kg (55%), sulfoaluminic acid 7kg (3.5%), diammonium chloride 3kg (1.5%), the measured pH=9.32 after two months, basically no return to alkali, the output is 7000kg .

[0018] An anti-saline-alkali agent prepared from iron tailings and its application in saline-alkali land is characterized in that:

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PUM

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Abstract

The invention relates to a saline-alkali reoccurrence preventing agent prepared from iron tailings, and an application thereof in saline-alkali land. The agent is characterized in that the agent is composed of the components of, by weight: 40-60% of iron tailings, 35-55% of fly ash, 3-4% of aluminum sulfate, and 1-2% of dimethyl diethyl ammonium chloride. Compared with prior arts, with the application provided by the invention, iron tailings such as iron tailing slurry, fly ash, and aluminum sulfate are economically and effectively utilized; and waste is turned into valuable matters. When the saline-alkali reoccurrence preventing agent provided by the invention is applied in a saline-alkali land, saline-alkali reoccurrence is basically prevented, a modification effect is good, and grain production is improved.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali land improvement, in particular to a saline-alkali anti-return agent prepared from iron tailings and its application in saline-alkali land. Background technique [0002] The improvement of saline-alkali land is a worldwide problem. The area of ​​saline-alkali land accounts for 1 / 10 of the earth's land area. The saline-alkali land in Northeast China belongs to one of the world's three major soda saline-alkali lands. The soil is highly alkaline and has a high pH value. The cause of saline-alkali land involves climate, topography (low-lying land), groundwater, seawater immersion, and human factors, etc., and it must go through the process of salt-accumulated soil and alkali-accumulated-salt-formed soil. Mainly due to capillary action, groundwater salt accumulates on the soil surface, and the evaporation of surface water intensifies the formation of saline soil, while rainwater or irrigation wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40A01B79/02C09K109/00
Inventor 邵安林崔湘浩刘润华刘畅
Owner ANSTEEL GRP MINING CO LTD
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