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Preparation method for preparing foliage fertilizer raw material from leather making chromium containing leather meal

A technology of chrome leather shavings and foliar fertilizers, applied in liquid fertilizers, fertilizer mixtures, nitrogen fertilizers, etc., can solve the problems of backward technology, high price of organic fertilizers, and lack of widespread use, and achieve the effect of increasing the hydrolysis rate

Active Publication Date: 2018-08-17
晋江全杰生物科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Since 2016, all parts of the country have successively carried out the zero-growth campaign of chemical fertilizer use, but organic fertilizers are still not widely used due to high prices, backward organic fertilizer technology of production enterprises, and lagging behind in transformation. According to calculations, by 2020, the national The market gap of commercial organic fertilizer will reach nearly 9 million tons

Method used

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  • Preparation method for preparing foliage fertilizer raw material from leather making chromium containing leather meal

Examples

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Effect test

example 1

[0024] A method for preparing foliar fertilizer raw materials from tanning chromium-containing leather scraps, characterized in that:

[0025] (1) Accurately weigh 15g of tanning chromium-containing leather shavings in a three-necked bottle, add 5 times of water, and then add 4% sodium hydroxide (based on the weight of tanning shavings, the following percentages are based on the same basis, such as self-made mixed alkali 0.5%, that is, the weight of chromium-containing leather shavings multiplied by the percentage), calcium hydroxide 4% (0.6g) and self-made mixed alkali A0.5% (0.075g), the hydrolysis time is 8h, the stirring hydrolysis temperature is 70°C, and the filter Filter residue, obtain gained filtrate A; (2) with the obtained filter residue of step (1), add 5 times of water (based on filter residue weight, this step other chemicals add all with it as basis), then add sodium hydroxide 1% , 1% of propyltriethoxysilane isocyanate, 3% of aluminum diethylphosphinate and 1% ...

example 2

[0030] A method for preparing foliar fertilizer raw materials from tanning chromium-containing leather scraps, characterized in that:

[0031] (1) Accurately weigh 15g of tanning chrome-containing leather shavings in a three-necked bottle, add 8 times of water, add 10% sodium hydroxide (based on the weight of leather shavings, the same below), 7% calcium hydroxide and homemade Mixed alkali A 1.4%, hydrolysis time is 16h, stirring hydrolysis temperature is 95°C, filter the filter residue to obtain the obtained filtrate A;

[0032] (2) With the filter residue obtained in step (1) (based on the weight of the filter residue, the addition of other chemicals in this step is based on it), add 8 times of water, then add 4% sodium hydroxide, propyl isocyanate Ethoxysilane 2%, aluminum diethylphosphinate 5% and substance A 4%, stirring and hydrolysis time is 12 hours, hydrolysis temperature is 75°C, precipitate and filter to obtain filtrate B;

[0033] (3) Filtrate A and filtrate B wer...

example 3

[0036] A method for preparing foliar fertilizer raw materials from tanning chromium-containing leather scraps, characterized in that:

[0037] (1) Accurately weigh 15g of tanning chromium-containing leather scraps in a three-necked bottle, add 6.5 times of water, add 7% sodium hydroxide (based on the weight of leather scraps), 5.5% calcium hydroxide and self-made mixed alkali A1 %, the hydrolysis time is 12h, the stirring hydrolysis temperature is 80°C, and the filter residue is filtered to obtain the obtained filtrate A;

[0038] (2) Add 6.5 times of water to the filter residue obtained in step (1), then add 2.5% sodium hydroxide, 1.5% isocyanate propyltriethoxysilane, 4% aluminum diethylphosphinate and substance A2.5%, the stirring hydrolysis time is 9.5h, the hydrolysis temperature is 75°C, precipitate and filter to obtain the obtained filtrate B;

[0039] (3) Filtrate A and filtrate B were combined to obtain the raw material for preparing foliar fertilizer from tanning ch...

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Abstract

The invention relates to a preparation method for preparing a foliage fertilizer raw material from leather making chromium containing leather meal. The preparation method comprises the following steps: weighing 15g of leather making chromium containing leather meal in a three-necked flask, adding 5-8 times of water, adding 4%-10% of sodium hydroxide (on the basis of the weight of leather meal), 4%-7% of calcium hydroxide and 0.5%-1.4% of self-made mixed bases A, wherein the hydrolysis time is 8-16 h, and the stirring hydrolysis temperature is 70-95 DEG C, and filtering filter residue, therebyobtaining a filtrate A; adding 5-8 times of water in the obtained filtrate, adding 1-4% of sodium hydroxide, 1-2% of 3-isocyanatopropyltriethoxysilane, 3-5% of aluminium diethylphosphinate and 1-4% ofmatters A, wherein the stirring hydrolysis time is 7-12 h, and the hydrolysis temperature is 75 DEG C, precipitating and filtering, thereby obtaining a filtrate B; and merging the filtrate A and thefiltrate B, thereby obtaining the foliage fertilizer raw material from leather making chromium containing leather meal. The obtained filtrates are low in chromium content, the product hydrolysis rateis high, the waste residue generation rate is low, and secondary pollution can be reduced.

Description

technical field [0001] The invention relates to solving the pollution of chromium-containing leather shavings in tanning, and relates to a preparation method for preparing foliar fertilizer raw materials from chromium-containing tanning shavings. Background technique [0002] China is the world's largest leather producer and consumer, with an annual leather output of about 100 million square meters, accounting for a quarter of the world's total output. In China, leather industry clusters based on Zibo in Shandong, Haining in Zhejiang, Jinjiang in Fujian and Xinji in Hebei have been formed. High production capacity is also accompanied by high waste. Chinese tannery enterprises generate as much as 1.4 million tons of solid waste every year. Every year, millions of tanning wastes are burned or buried, which wastes a lot of protein resources and brings huge processing costs to related companies. As of August 1, 2016, every ton of chrome-containing leather shavings that the tan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C01G37/08
CPCC01G37/08C05C11/00C05G5/20C05G3/00
Inventor 段宝荣刁屾龚俊豪闫博雯李霄夏爽张傲东胡宏智葛淑华王全杰
Owner 晋江全杰生物科技有限公司
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