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Production method and continuous steam-pressure device of acid soil improver

An acid soil and production method technology, applied in soil conditioning materials, fertilization devices, chemical instruments and methods, etc., can solve the problems of low energy utilization efficiency, high cost, large pressure loss, etc., to improve production efficiency and energy utilization. efficiency, improving soil micro-ecological environment, and being suitable for a large number of applications

Active Publication Date: 2015-12-16
SHANDONG AGRI UNIV FERTILIZER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, the existing autoclaving device for processing soil conditioners generally includes a pressure cylinder and a cover at both ends of the pressure cylinder. When feeding is required, open the cover at one end, put the material into the pressure cylinder, and then autoclave and discharge. When the pressure is released, the pressure relief time is long and continuous production cannot be performed during the pressure relief process, resulting in low efficiency, especially for materials with a long reaction time, which seriously affects the normal operation of other processes and significantly reduces production efficiency, and the above-mentioned intermittent autoclaving device basically releases the pressure in the autoclaving device due to its intermittent pressure release and pressurization, the pressure loss is huge, the energy utilization efficiency is low, and the cost remains high

Method used

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  • Production method and continuous steam-pressure device of acid soil improver
  • Production method and continuous steam-pressure device of acid soil improver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Crushing of ore: crush potassium feldspar, quicklime, magnesite, boronite lump ore through a pulverizer to a material with a particle size of less than 1cm;

[0055] (2) Mix 38 parts of potassium feldspar, 28 parts of quicklime, 11 parts of magnesite, 6 parts of boronite, 12 parts of a mixture of weathered coal and lignite, and 4 parts of activated auxiliary materials, and transport them to a ball mill for grinding until powder The particle size of the material is 100 mesh; the above-mentioned "parts" are parts by weight;

[0056] (3) Put the ground material in step (2) into the mixer, add water and stir evenly, so that the moisture content of the material is about 25%, and then send the material into the compression mold in the compression molding machine, and press it into a block;

[0057] (4) Transfer the bulk raw material formed by compression molding in step (3) to a continuous autoclaving device for reaction. The reaction conditions are: feed high temperature...

Embodiment 2

[0070] a. Crushing of ores: The massive ores such as potassium feldspar and quicklime are crushed into materials with a particle size of less than 1cm through a jaw crusher.

[0071] b. Mixed grinding of ore: The required raw materials are according to the mass ratio: 35 parts of potassium feldspar, 25 parts of quicklime, 12 parts of magnesite, 7 parts of boron magnesium ore, 15 parts of weathered coal / lignite, 5 parts of activated auxiliary materials, Mix evenly, enter the ball mill, and grind until the particle size of the powder is greater than 100 mesh;

[0072] c. Powder compression molding: the ground mixed powder enters the mixer, adds water and stirs evenly to form a wet material with a water content of 20-30%, and then enters the compression molding machine to be pressed into blocks;

[0073] d. Hydrothermal autoclaving reaction: put the compression molded raw material block on the steam curing car, push it into the continuous autoclaving device, close the kettle door...

Embodiment 3

[0076] a. Crushing of ores: The massive ores such as potassium feldspar and quicklime are crushed into materials with a particle size of less than 1cm through a jaw crusher.

[0077] b. Mixed grinding of ore: The required raw materials are according to the mass ratio: 37 parts of potassium feldspar, 28 parts of quicklime, 10 parts of magnesite, 5 parts of boron magnesium ore, 10 parts of weathered coal / brown coal, 2 parts of activated auxiliary materials, Mix evenly, enter the ball mill, and grind until the particle size of the powder is greater than 100 mesh;

[0078] c. Powder compression molding: the ground mixed powder enters the mixer, adds water and stirs evenly to form a wet material with a water content of 20-30%, and then enters the compression molding machine to be pressed into blocks;

[0079] d. Hydrothermal autoclaving reaction: put the molded raw material block on the steam curing car, push it into the continuous autoclaving device, close the kettle door of the c...

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Abstract

The invention belongs to the technical field of soil regulation and repairing, and particularly relates to a production method of an acid soil improver, and also relates to a continuous steam-pressure device used in the production of the improver. The acid soil improver is characterized in that potassium-containing minerals such as potassium feldspar, quick lime, decomposed coal or brown coal rich in humic acid and the like are used as raw materials, by utilizing high-temperature high-pressure saturation steam, the potassium-containing mineral such as the potassium feldspar is enabled to have high-temperature high-pressure hydrothermal reaction under the co-effect of the quick lime, decomposed coal / brown coal and other auxiliary activating agents, active elements such as silicon, potassium, calcium, magnesium, iron and the like in the mineral are activated and converted to form soluble active nutrients, so that the obstacle-type soil can be effectively improved, especially the acidified soil can be improved, the soil structure is improved, the continuous-cropping obstacle is eliminated, the crop growth is promoted, and the crop quality is improved.

Description

technical field [0001] The invention belongs to the technical field of soil conditioning and restoration, and in particular relates to a production method of an acidic soil conditioner, and also relates to a continuous autoclaving device used in the production of the above-mentioned conditioner. Background technique [0002] Due to the influence of soil parent material, planting mode, fertilization, climate and other factors, there are currently about 2 [0003] million hectares of acidic soil. Most acidic soils have a pH of less than 5.5, and some are even lower. The total soil area of ​​Shandong Province [0004] The area of ​​acid brown soil is 12.11 million hectares, and the area of ​​acid brown soil is 1.7062 million hectares. Especially in Shandong Jiaodong area, the pH value of some orchard soil even reaches 4.5, which seriously affects the growth of fruit trees. In protected vegetable production, due to years of continuous cropping and excessive application of che...

Claims

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Application Information

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IPC IPC(8): C09K17/40B65G49/00B65G33/14C09K109/00
Inventor 丁方军马学文吴钦泉陈士更孟庆羽胡斌
Owner SHANDONG AGRI UNIV FERTILIZER TECH CO LTD
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