Method for upgrading production of mineralized metallurgical reagent by using low-rank coal, mineralized metallurgical reagent and application

A low-rank coal and agent technology, applied in the field of mineralization and metallurgy agents, can solve the problems of low mineralization efficiency and high agent dosage, and achieve the effects of strong applicability, low cost, and expanded production

Active Publication Date: 2021-07-30
ZHENGZHOU UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of low mineralization efficiency and high dosage of chemicals in the mineralization metallurgical process of humic acid extracted by conventional methods, the first purpose of the present invention is to provide a humic acid with fully activated active functional groups Mineralizing metallurgical agents, compared with the existing humic acid mineralizing metallurgical agents, have a higher proportion of activated functional groups, which can generate a considerable number of active free radicals, endowing them with excellent mineralizing and metallurgical properties

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

[0048] The low-rank lignite is crushed to 30mm in the first stage of the jaw crusher and finely crushed in the second stage, and the gangue in the material is removed by a jig; the coarsely selected lignite is finely ground to 0.075mm by an automatic vibrating mill, and then separated by an air fluidized bed. The sorting machine selects and removes silicon, calcium, magnesium and other ash in coal to obtain clean coal powder; the selected coal is 200μW / cm 2 Ultraviolet radiation for 10 minutes to obtain activated clean coal powder. Add 1mol / L NaOH and 0.05mol / L NaOH to the activated clean coal powder in sequence 4 P 2 o 7 Solution (volume ratio 3:1), liquid-solid ratio 10:1, heat and stir for 30 minutes until the active components in the clean coal are completely dissolved, centrifuge at 3500r / min for 30 minutes to obtain a solution containing a large amount of active components. Add (1+1) HCl to the solution to adjust the pH of the solution to 1.5, let it stand for 8 hours...

Embodiment 2

[0051]The low-rank lignite is crushed to 30mm in the first stage of the jaw crusher and finely crushed in the second stage, and the gangue in the material is removed by a jig; the coarsely selected lignite is finely ground to 0.075mm by an automatic vibrating mill, and then separated by an air fluidized bed. The sorting machine selects and removes silicon, calcium, magnesium and other ash in coal to obtain clean coal powder; the selected coal is 300μW / cm 2 Ultraviolet radiation for 8 minutes to obtain activated clean coal powder. Add 1mol / L NaOH and 0.05mol / L NaOH to the activated clean coal powder in sequence 4 P 2 o 7 Solution (volume ratio 3:1), liquid-solid ratio 8:1, heat and stir for 30 minutes until the active components in the clean coal are completely dissolved, centrifuge at 3500r / min for 30 minutes to obtain a solution containing a large amount of active components. Add (1+1) HCl to the solution to adjust the pH of the solution to 1.5, let it stand for 8 hours to...

Embodiment 3

[0054] The low-rank lignite is crushed to 30mm in the first stage of the jaw crusher and finely crushed in the second stage, and the gangue in the material is removed by a jig; the coarsely selected lignite is finely ground to 0.075mm by an automatic vibrating mill, and then separated by an air fluidized bed. Separator selects and removes silicon, calcium, magnesium and other ash in coal to obtain clean coal powder; the selected coal is 250μW / cm 2 Ultraviolet radiation for 10 minutes to obtain activated clean coal powder. Add 1mol / L NaOH and 0.05mol / L NaOH to the activated clean coal powder in sequence 4 P 2 o 7 Solution (volume ratio 3:1), liquid-solid ratio 10:1, heat and stir for 30 minutes until the active components in the clean coal are completely dissolved, centrifuge at 3500r / min for 30 minutes to obtain a solution containing a large amount of active components. Add (1+1) HCl to the solution to adjust the pH of the solution to 1.5, let it stand for 8 hours to precip...

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

PropertyMeasurementUnit
Compressive strengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for upgrading production of a mineralized metallurgical reagent by using low-rank coal, the mineralized metallurgical reagent and application. The method comprises the following steps: crushing a low-rank coal material, removing impurities and conducting deliming to obtain refined coal; activating the selected coal by ultraviolet irradiation, and conducting stirring with a caustic soda solution and a Na4P2O7 solution to react to obtain dissolved slurry; and subjecting the dissolved pulp to acidification treatment, centrifugal treatment, freeze drying and fine grinding treatment in sequence, and then conducting ultraviolet irradiation, so as to obtain the mineralized metallurgical agent. According to the method, humic acid active functional groups in the mineralization metallurgical reagent are fully activated, the mineralization metallurgical reagent is used for heavy metal ion flotation and metallurgical pellet binding agents, and compared with existing humic acid chelating agents and binding agents, the high-performance mineralization metallurgical reagent is obtained with the low-rank coal as the raw material via the method, the method not only can solve the recycling problem of a large amount of idle stockpiled low-rank coal, but also can improve the performance and applicability of mineralized metallurgical agents, and has remarkable economic and social benefits.

Description

technical field [0001] The present invention relates to a mineralization and metallurgy agent, in particular to a mineralization and metallurgy agent that can be used as a heavy metal ion chelating agent or a metallurgical pellet binder, and also relates to a mineralization and metallurgy agent that utilizes low-rank coal to improve the quality of the production of mineralization and metallurgy The pharmaceutical method belongs to the technical field of metallurgy. Background technique [0002] In my country's energy structure, oil and natural gas resources are scarce, and coal reserves are relatively abundant, accounting for nearly 70% of the energy structure and occupying a dominant position. At present, my country has proven coal reserves of 1,020 billion tons, more than 55% of which are low-rank coals with a low degree of coalification, and the volatile matter contained in them is equivalent to 100 billion tons of oil and gas resources. However, due to the high water co...

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
IPC IPC(8): B03D1/016C22B1/00C22B1/244
CPCB03D1/016C22B1/00C22B1/244B03D2203/02Y02P10/20
Inventor 韩桂洪黄艳芳刘兵兵苏胜鹏
Owner ZHENGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap