Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for improving content of humic acid in weathered coal

A technology for weathering coal and humic acid, which is applied in the field of increasing the humic acid content of weathered coal, can solve the problems of low productivity of humic acid and the like, and achieve the effects of low cost and simple operation.

Active Publication Date: 2012-07-18
TAIYUAN UNIV OF TECH
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a method for increasing the content of humic acid in weathered coal to solve the problem of low productivity of humic acid in the existing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 100g of diesel oil, add it to a three-necked flask with stirring and reflux and heat to 40°C, then add 6g of butyric acid, stir for 10min, continue to heat up to 100°C, stop heating, keep it for 50min, add Zhongxin when the temperature drops to 30°C Alcohol is 12g, kept for 3h, when the temperature drops to room temperature, add 18g soybean oil, continue to stir and mix uniformly, and then filter to separate and remove impurities to obtain mixed additives.

[0021] The weathered coal is heated to 110°C with air in the drying tube, kept for 8 hours, and then cooled to room temperature. Take 150g of weathered coal and add it to the flotation tank of the 1.5L flotation machine. After the weathered coal is fully wetted, 0.17g of the prepared mixed additive is injected into the coal slurry in the flotation tank. After 3 minutes, it is aerated, and Scrape the bubble for 3 minutes, and finally suction filter and dry the coal slurry in the flotation tank. A sample of 136 g o...

Embodiment 2

[0024] Take 100g of kerosene, add it to a three-necked flask with stirring and reflux, and heat to 50°C, then add 2g of valeric acid, stir for 5min, continue to heat up to 90°C, stop heating, keep it for 1h, and add Zhongxin when the temperature drops to 40°C 60g of alcohol, heat preservation for 1h, when the temperature drops to room temperature, add 35g of waste catering oil, continue to stir and mix uniformly, and then filter to separate and remove impurities to obtain a mixed additive.

[0025] The weathered coal is heated to 80°C with air in the drying tube, kept for 3h, and then cooled to room temperature. Take 150g of weathered coal and add it to the flotation tank of the 1.5L flotation machine. After the weathered coal is fully wetted, 0.28g of the prepared mixed additive is injected into the coal slurry in the flotation tank. After 10 minutes, aerate and Scrape the bubble for 3 minutes, and finally suction filter and dry the coal slurry in the flotation tank. A 128g sam...

Embodiment 3

[0028] Take 100g of diesel oil, add it to a three-necked flask with stirring and reflux and heat to 50°C, then add 5g of caproic acid, stir for 7min, continue to heat up to 100°C, stop heating, keep it for 30min, add Zhongxin when the temperature drops to 40°C Alcohol 50g, heat preservation for 2h, when the temperature drops to room temperature, add 5g rapeseed oil, continue to stir and mix uniformly, and then filter to separate impurities to obtain a mixed additive.

[0029] The weathered coal is heated to 100°C with air in a drying tube, kept for 5 hours, and then cooled to room temperature. Take 150g of weathered coal and add it to the flotation tank of a 1.5L flotation machine. After the weathered coal is fully wetted, 0.2g of the prepared mixed additive is injected into the coal slurry in the flotation tank. After 8 minutes, it is aerated, and Scrape the bubble for 3 minutes, and finally suction filter and dry the coal slurry in the flotation tank. A sample of 133 g of high...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for improving the content of humic acid in weathered coal and belongs to the technical field of humic acid preparation. According to the invention, the method for improving the content of humic acid in the weathered coal is provided so that the problem that the existing humic acid production rate is low is solved. The adopted technical scheme comprises the following method steps: firstly, preparing a mixed additive, namely, adding non-polar oil into a reactor for heating, then adding organic acid, stirring, further heating and carrying out heat preservation, adding a foaming agent and then adding a reinforcing agent, and evenly mixing, and separating impurities so as to obtain the mixed additive; and introducing air into a drying tube and heating the weathered coal in the drying tube, adding the weathered coal into a flotation cell of a flotation machine, sufficiently wetting the weathered coal and then adding the mixed additive into the flotation cell, inflating and scrapping foam, and finally carrying out suction filtration on coal slurry and drying. The method provided by the invention is applied to the technical field of improvement of the content of humic acid in the weathered coal.

Description

Technical field [0001] The invention provides a method for increasing the humic acid content of weathered coal, which belongs to the technical field of humic acid preparation. Background technique [0002] Humic acid and its products have many uses. In agriculture, humic acid fertilizers combined with nitrogen, phosphorus, potassium and other elements (for example, humic acid can be made into ammonium humate fertilizer by neutralizing humic acid with ammonia), which can increase fertilizer efficiency, improve soil, and stimulate crop growth. Improve the quality of agricultural products and other functions; nitrohumic acid can be used as an acid regulator for raising rice seedlings; magnesium humate, zinc humate, and iron urea have good effects on supplementing soil magnesium deficiency, corn deficiency zinc, and fruit tree iron deficiency. ; Humic acid mixed with herbicides, atrazine and other pesticides can improve efficacy and inhibit residual poison; sodium humate is effectiv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08H99/00
Inventor 张继龙程小平王莉英彭素琴王之春帖呈陈艳慧郭明明
Owner TAIYUAN UNIV OF TECH