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A kind of method that utilizes manganese slag to produce forest silicon-calcium-manganese compound mineral fertilizer

A technology of composite minerals and manganese slag, applied in the direction of calcium fertilizer, application, inorganic fertilizer, etc., can solve the problems of endangering human health, growing polluted soil, and poor fertilizer efficiency, and achieve the effect of no three wastes discharge, simplified process, and simple process

Active Publication Date: 2021-05-11
重庆市地质矿产测试中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, electrolytic manganese slag has been used to prepare fertilizers. Although the full price fertilizer prepared by it can increase the fertilizer efficiency to a certain extent, its fertilizer effect is not as good as that of ordinary nitrogen and phosphorus fertilizers.
In addition, electrolytic manganese slag also contains many harmful elements, which will pollute the soil while promoting the growth of crops and endanger human health

Method used

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  • A kind of method that utilizes manganese slag to produce forest silicon-calcium-manganese compound mineral fertilizer
  • A kind of method that utilizes manganese slag to produce forest silicon-calcium-manganese compound mineral fertilizer

Examples

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Effect test

Embodiment 1

[0044] A kind of method utilizing manganese slag to produce forestry silicon-calcium-manganese compound mineral fertilizer, comprises the steps:

[0045] (1) Manganese slag pretreatment

[0046] Get electrolytic manganese slag 1000g, after adding 3000mL water and carry out slurry adjustment, add ammonium bicarbonate 213g wherein to react, control slurry terminal pH to be 9, stir at normal temperature for 1 hour, filter and separate to obtain slag phase and pretreatment liquid;

[0047](2) Take the slag phase obtained after the pretreatment of step (1), mix it with ground quicklime and sodium hydroxide and add 3000mL of water to stir and mix evenly, the mass percentage of the slag phase, quicklime and sodium hydroxide is 65% :30% :5%;

[0048] (3) transfer the mixed material to the pipeline pressure reaction device;

[0049] (4) The pipeline pressure reaction device was hydrothermally reacted for 150 minutes under the saturated steam pressure of 180°C, and cooled naturally to...

Embodiment 2

[0056] A kind of method utilizing manganese slag to produce forestry silicon-calcium-manganese compound mineral fertilizer, comprises the steps:

[0057] (1) Manganese slag pretreatment

[0058] Get electrolytic manganese slag 5000g, after adding 15L water and carry out slurry adjustment, add ammonium bicarbonate 1100g wherein to react, control slurry terminal pH to be 10, stir at normal temperature for 1.5 hours, filter and separate to obtain slag phase and pretreatment liquid;

[0059] (2) Get the slag phase obtained after the pretreatment of step (1), mix it with ground quicklime and sodium hydroxide, add 12L of water and stir and mix evenly, the mass percentage of the slag phase, quicklime and sodium hydroxide is 65% :30% :5%;

[0060] (3) transfer the mixed material to the pipeline pressure reaction device;

[0061] (4) The pipeline pressure reaction device was hydrothermally reacted for 600 minutes under the saturated vapor pressure of 120°C, and cooled naturally to ro...

Embodiment 3

[0068] A kind of method utilizing manganese slag to produce forestry silicon-calcium-manganese compound mineral fertilizer, comprises the steps:

[0069] (1) Manganese slag pretreatment

[0070] Get electrolytic manganese slag 50Kg, after adding 130L water and carry out slurry adjustment, add ammonium bicarbonate 12Kg wherein to react, control slurry terminal pH to be 10.0, stir at normal temperature for 2.0 hours, filter and separate to obtain slag phase and pretreatment liquid;

[0071] (2) Get the slag phase obtained after step (1) pretreatment, add 140L water stirring and mixing with ground quicklime, sodium hydroxide, the mass percent of described slag phase, quicklime and sodium hydroxide is 62%:34 %:4%,;

[0072] (3) transfer the mixed material to the pipeline pressure reaction device;

[0073] (4) The pipeline pressure reaction device was hydrothermally reacted for 300 minutes under the saturated steam pressure of 150°C, and cooled naturally to room temperature;

[...

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Abstract

The invention provides a method for producing forest silicon-calcium-manganese composite mineral fertilizer by using manganese slag, which belongs to the technical field of mineral fertilizer preparation. The preparation method of the present invention comprises the following steps: (1) ammonium bicarbonate pretreatment manganese slag (2) get pretreated manganese slag, unslaked lime, reaction promoting activator and mix, add water and stir and mix, generate water in pipeline pressure reaction device Thermal reaction; the temperature of the hydrothermal reaction is 120°C to 260°C, and the time is 60min to 600min; (3) Take out the product after the hydrothermal reaction, perform press filtration, granulate and dry the reaction slag, and obtain forestry silicon Calcium manganese compound mineral fertilizer. Adopting the method of the present invention to prepare mineral fertilizers can realize clean production in the manganese slag fertilizer making process, and no harmful substances are added to the produced mineral fertilizers, and the natural material composition characteristics of manganese slags are retained, and the fertilizer effect is remarkable, and can be used in forestry In terms of production, the yield of forestry crops can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of mineral fertilizer production for forestry, and in particular relates to a method for producing silicon-calcium-manganese compound mineral fertilizer for forestry using manganese slag. Background technique [0002] my country is the world's largest producer, consumer and exporter of electrolytic manganese metal, with a production capacity of more than 2 million tons, accounting for 98% of the world's total production capacity of electrolytic manganese. Electrolytic manganese slag is the filtered acid slag produced after the electrolysis of metal manganese, and is a key pollutant in the electrolytic manganese industry. The production of electrolytic manganese slag reaches 7-11 tons per ton of manganese, and the annual production is about 20 million tons. At present, enterprises have not yet found a way to properly dispose of the electrolytic manganese slag, and generally transport the electrolytic mangane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05D11/00
CPCC05D3/00C05D9/00C05D9/02
Inventor 何光益秦宗兴黎立刁憬平来宏周春吉丁涛
Owner 重庆市地质矿产测试中心
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