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, resul

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

Example Embodiment

[0053] Example 1

[0054] (1) Crushing of ore: The block ore of potash feldspar, quicklime, magnesite, and boron-magnesium ore is crushed to materials with a particle size of less than 1 cm through a crusher;

[0055] (2) 38 parts of potash feldspar, 28 parts of quicklime, 11 parts of magnesite, 6 parts of boron magnesite, 12 parts of weathered coal and lignite mixture, 4 parts of activating auxiliary materials, mixed uniformly and transported to the ball mill for grinding to powder The particle size of the material is 100 mesh; the "parts" mentioned above are all parts by weight;

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

[0057] (4) Transport the bulk raw material formed by compression molding in step (3) to a continuous autoclave for reaction. The reaction conditions are ...

Example Embodiment

[0069] Example 2

[0070] a. Crushing of ore: The block ore, such as potash feldspar and quicklime, is crushed to materials with a particle size of less than 1cm through a jaw crusher.

[0071] b. Mixed grinding of ore: The required raw materials are: 35 parts of potassium feldspar, 25 parts of quicklime, 12 parts of magnesite, 7 parts of boron magnesia, 15 parts of weathered coal / lignite, and 5 parts of activating 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 and presses it into a block;

[0073] d. Hydrothermal autoclave reaction: Place the raw material block formed by compression molding on the autoclave, push it into the continuous autoclave device, close the kettle door of the continuous au...

Example Embodiment

[0075] Example 3

[0076] a. Crushing of ore: The block ore such as potash feldspar and quicklime is crushed to materials with a particle size of less than 1 cm through a jaw crusher.

[0077] b. Mixed grinding of ore: The required raw materials are 37 parts potassium feldspar, 28 parts quicklime, 10 parts magnesite, 5 parts boron magnesia, 10 parts weathered coal / lignite, 2 parts activation auxiliary materials according to the mass ratio, 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 and presses it into a block;

[0079] d. Hydrothermal autoclave reaction: put the raw material block formed by compression moulding on the autoclave car, push it into the continuous autoclave device, close the kettle door of the contin...

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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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