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Method for preparing calcium-silicon-potassium-magnesium soil conditioner

A soil conditioner, silicon-calcium-potassium-magnesium technology, applied in calcium fertilizers, fertilizer mixtures, inorganic fertilizers, etc., can solve problems affecting yield and quality, uneven calcination, complicated operation, etc., to increase storage resistance and improve product quality value, effect of improving soil properties

Active Publication Date: 2015-03-04
HEBEI ZHONGRUI AGRI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complicated to operate and requires manual transfer, which is time-consuming and laborious. Although the effective potassium conversion rate has increased, the calcination is uneven, which seriously affects the yield and quality.

Method used

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  • Method for preparing calcium-silicon-potassium-magnesium soil conditioner
  • Method for preparing calcium-silicon-potassium-magnesium soil conditioner
  • Method for preparing calcium-silicon-potassium-magnesium soil conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A. Raw material preparation:

[0039] By weight, including potassium shale 60%, limestone 20%, dolomite 20%;

[0040] B. Grinding:

[0041] Grind the raw materials prepared in step A with a ball mill to 200 mesh;

[0042] C. Calcination:

[0043] Grind the raw materials in step B to 200 mesh, place them in a rotary kiln, and calcine them at 1200° C. to obtain clinker. During calcination, control the calcination time to 45 minutes, and the calcination pressure to 1 atmosphere;

[0044] D. Water quenching:

[0045] The clinker obtained after step D is calcined is immediately conveyed by a conveyor belt for water quenching to obtain a solid product. During water quenching, water spraying at 20°C is used, the water pressure is 1.5 atmospheres, and the conveying speed of the conveyor belt is controlled at 60-80cm / s;

[0046] E. Crushing:

[0047] The solid intermediate product obtained in step D is pulverized to 300 mesh by a pulverizer to obtain a powder;

[0048] F...

Embodiment 2

[0053] The difference from Example 1 is that the preparation of raw materials in step A includes 65% of potassium-containing shale, 17.5% of limestone and 17.5% of dolomite by weight ratio. In step C, the calcination temperature is 1160° C., and the calcination time is 50 min.

Embodiment 3

[0055] The difference from Example 1 is that the preparation of raw materials in step A includes, by weight ratio, 70% of potassium-containing shale, 15% of limestone, and 15% of dolomite. In step C, the calcination temperature is 1240° C., and the calcination time is 40 minutes.

[0056] Product analysis and application effect of the present invention are shown in Table 1-Table 4:

[0057] Table 1 Conversion rate of potassium in potassium-bearing shale into available potassium

[0058]

[0059] Table 2 Comparison results of the conversion rate of potassium in potassium-bearing shale into available potassium

[0060]

[0061] It can be clearly shown by Table 1 and Table 2 that the conversion rate of potassium in the potassium-containing shale of the technical solution of the present invention into available potassium is high, which can reach more than 98.6%, and the conversion rate of potassium can be significantly improved, which is obviously higher than current technol...

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Abstract

The invention provides a method for preparing a calcium-silicon-potassium-magnesium soil conditioner. The method comprises the following steps: A, preparing raw materials; B, grinding; C, calcining; D, water quenching; E, crushing; F, granulating; and G, drying. According to the preparation method, potassium-containing shale is utilized to prepare calcium-silicon-potassium fertilizer, so that potassium in the calcium-silicon-potassium fertilizer is sufficiently utilized as potassium fertilizer, and silicon oxide in the calcium-silicon-potassium fertilizer is sufficiently utilized to produce excellent silicon fertilizer; limestone and dolomite added into production are sufficiently utilized to produce calcium fertilizer and excellent soil conditioners; the raw materials are sufficiently utilized and converted into fertilizer, and the fertilizer cannot cause soil acidification, alkalization and hardening after being applied, the commodity quality and product quality of crops can be remarkably improved, and the crops have higher nutritional value.

Description

technical field [0001] The invention relates to a preparation method of a silicon-calcium-potassium-magnesium soil conditioner. Background technique [0002] The absorption of nitrogen, phosphorus and potassium by plants is carried out in proportion, and the three promote each other and cannot replace each other. For a long time, due to the outstanding role of chemical fertilizers in high crop yields, people have used chemical fertilizers as an important means of high crop yields, and began to use them in large quantities, resulting in soil compaction and fertilizer damage. Various organic matter and fertilizers in the soil A large number of trace elements are missing, which gradually reduces the effect of chemical fertilizers. [0003] Patent CN 103739341A discloses "a production process and equipment for silicon-calcium-potassium fertilizer". The process is: using water-insoluble potassium ore and limestone or dolomite as raw materials, sequentially crushing, grinding, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05D3/00C05D3/02C05D9/00
Inventor 王焱张路军杨永新姚金海李少云王奎英
Owner HEBEI ZHONGRUI AGRI SCI & TECH
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