Composite boric fertilizer, and producing technical method

A manufacturing process and boron fertilizer technology, applied in the direction of magnesium fertilizer, inorganic fertilizer, fertilization device, etc., can solve the problems such as difficulty in increasing the yield of cotton and rapeseed, achieve the effect of enhancing the ability to absorb nutrients, simple production process, and early flowering

Inactive Publication Date: 2007-07-25
段贵华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The long-established method of using boric acid production waste liquid to produce crystalline boron-magnesium fertilizer is mainly used for cotton and rape planting, and its consumption is 70% of the total amount of boron-magnesium fertilizer. However, since the composition of crystalline boron-magnesium fertilizer only contains boron and magnesium, it cannot meet The growth of cotton and rapeseed requires other trace elements, which makes it difficult to increase the yield of cotton and rapeseed
There is no report on the boron-magnesium fertilizer and manufacturing process containing zinc and iron elements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 The main components of the waste liquid from boric acid production are: 4.8% boric acid, 0.4% sulfuric acid, and 24.1% magnesium sulfate.

[0028] Calculated on the basis of every hundred kilograms of compound boron fertilizers produced, 300kg of boric acid waste liquid is neutralized to pH6 with 4kg of lightly burned magnesium powder, press-filtered after neutralization, and the filtrate is concentrated to 240kg at 100-110°C, and the concentrated solution is set aside; Add 1.1kg of iron filings, 0.5 kg of zinc oxide and 30kg of concentrate in the kettle, add 1.4kg of sulfuric acid dropwise at room temperature until the iron filings and zinc oxide are fully reacted and completely dissolved, the reaction solution is sent to a crystallizer, add 210kg of concentrate, and Crystallize below 25°C, centrifuge after crystallization, and dry the obtained crystals at 60-70°C to obtain semi-finished products. After inspection, the boron content is 0.62, and 3.3 kg of bor...

Embodiment 2

[0030] The composition of embodiment 2 boric acid waste liquid is: boric acid 4%, sulfuric acid '0.4%, magnesium sulfate 25.6%, according to

[0031] The method of embodiment 1 changes proportioning, prepares active ingredient: boron 1%, magnesium>7%, zinc 0.2%, the compound boron fertilizer of iron 0.6%.

[0032] Boric acid waste liquid 300kg, light burnt magnesium 4kg neutralize and concentrate to 160kg, iron-zinc mixture: iron filings 0.7kg zinc oxide 0.3kg concentrate 30kg sulfuric acid 0.8kg crystallizer add concentrate 130kg.

[0033] The boron content of the prepared semi-finished product is 0.4%, and 3.4kg of boric acid is added. The measured active ingredients are: boron 1.02%, magnesium 7.8%, zinc 0.21%, iron 0.59%.

Embodiment 3

[0034] The composition of embodiment 3 boric acid waste liquid is: boric acid 5%, sulfuric acid '0.2%, magnesium sulfate 27.6%, change proportioning according to the method for embodiment 1, and preparation active ingredient is: boron 1.2%, magnesium>7%, zinc 0.1%, iron 0.4% compound boron fertilizer.

[0035] Boric acid waste liquid 300kg, lightly burned magnesium 2kg neutralized and concentrated to 160kg, iron-zinc mixture: iron filings 0.46kg

[0036] Zinc oxide 0.15kg concentrate 30kg sulfuric acid 0.48kg Add concentrate 130kg to the crystallizer.

[0037] The boron content of the prepared semi-finished product is 0.48%, and 4kg of boric acid is added. The measured active ingredients are: boron 1.2%, magnesium 7.9%, zinc 0.21%, iron 0.59%.

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Abstract

This invention discloses a method for producing compound boron fertilizer, which is white or light green crystal, and mainly composed of: B 1.0-1.2 wt.%, Zn 0.2-0.5 wt.%, Fe 0.6-1.0 wt.%, and Mg more than 7.0 wt.%. The method comprises: preparing concentrated solution, preparing Zn-Fe mixed solution, preparing semi-finished product, and preparing the final product. The compound boron fertilizer contains Fe and Zn that are necessary for the growth of cotton and rape. Thus, the compound boron fertilizer can compensate the defects of B-Mg fertilizer, promote the development of cotton and rape root systems, improve the ability to absorb nutrients, stimulate the development of gynoecia germens, accelerate the growth, promote photosynthesis, shorten the growth period, advance the mature time, and prevent deficiency symptom. The compound boron fertilizer has increased yield (by 15-25%), simple process, easy application, and no pollution.

Description

technical field [0001] The invention relates to an inorganic chemical fertilizer, in particular to a boron-magnesium fertilizer. Background technique [0002] The long-established method of using boric acid production waste liquid to produce crystalline boron-magnesium fertilizer is mainly used for cotton and rape planting, and its consumption is 70% of the total amount of boron-magnesium fertilizer. However, since the composition of crystalline boron-magnesium fertilizer only contains boron and magnesium, it cannot meet The growth of cotton and rape requires other trace elements, which makes it difficult to increase the yield of cotton and rape. There is no report on the boron-magnesium fertilizer containing zinc and iron elements and the manufacturing process. Contents of the invention [0003] Aiming at the deficiency of the present boron and magnesium fertilizer components, the invention proposes a compound boron fertilizer and a manufacturing process suitable for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00C05D9/02C05D5/00
Inventor 段贵华林炬
Owner 段贵华
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