Method for extracting aluminum potassium product from associated alum quarry tailings

A technology of ore tailings and alunite, applied in the field of resources, can solve the problem of less development and utilization of associated alunite ore tailings, achieve preliminary separation and improve the effect of leaching rate

Active Publication Date: 2012-09-12
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many domestic research reports on primary alunite mines and some of them have been applied industrially, but there are few reports on the development and utilization of associated alunite mine tailings

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for extracting aluminum potassium product from associated alum quarry tailings
  • Method for extracting aluminum potassium product from associated alum quarry tailings
  • Method for extracting aluminum potassium product from associated alum quarry tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The associated alunite tailings were mixed with 20% sulfuric acid solution at a liquid-to-solid ratio of 2:1, and put into a muffle furnace for roasting at 300°C for 3 hours. After taking it out and cooling it down to room temperature naturally, add the deionized water required for the liquid-solid ratio of 1:1 with the ore sample before roasting, and let it stand for crystallization for 36 hours. The obtained crystal (its XRD spectrogram, physical photo and XRF analysis results are shown in figure 2 , image 3 and Table 1) After collection, the remaining slag was mixed with deionized water at a liquid-solid ratio of 8:1, stirred in a water bath at 90°C for 3 hours, and filtered. Pour the filtrate obtained after the acid melting-water immersion treatment into the crystallizer, let it stand for crystallization at room temperature for 24 hours, and take out the crystal (the XRD spectrum, physical photo and XRF analysis results are respectively shown in Figure 4 , Fi...

Embodiment 2

[0030] With example 1, change 20% sulfuric acid solution into 30% sulfuric acid solution, also can obtain three kinds of crystals similar to embodiment 1 in three steps. At the same time, the leaching rates of Al and K were slightly increased.

Embodiment 3

[0032] Same as Example 1, the acid melt roasting temperature is reduced from 300 DEG C to 280 DEG C, compared with Embodiment 1, the first crystallization weight reduces by 10%, and there is no significant difference in the second and third crystallization weights. At the same time, the leaching rate of Al remains unchanged, while the leaching rate of K decreases slightly.

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

Aiming at the characteristic that associated alum quarry tailings in domestic enterprises are higher in aluminum potassium content and are simple in phase composition and contain main impurities, i.e. SIO2, the invention provides a novel acid fusion-water immersion method for treating the tailings to extract a high-value aluminum potassium product. After an ore sample is strengthened and roasted by low-temperature acid and is immersed into water with a temperature of 90 DEG C for treatment, the extraction rates of Al and K respectively reach 94.6 percent and 92.9 percent, which show better industrial application prospect. By adopting a fractional crystallization method, aluminum sulfate hydrate and alum crystals with higher purity are respectively obtained, and the preliminary separation of aluminum from potassium is realized.

Description

technical field [0001] The invention belongs to the field of resources. Aiming at the contradiction that our country's potassium resources are relatively poor on the one hand, and on the other hand, there are a large amount of potassium-containing associated alunite ore tailings that are left idle, a new acid melting-water leaching method is proposed. The treatment process greatly improves the leaching rate of Al and K. And through the fractional crystallization method, aluminum sulfate hydrate and alum crystals with high purity were obtained respectively, and the preliminary separation of aluminum and potassium products was realized. Background technique [0002] Potassium resources in my country are relatively poor (only 5% of the world's total resources), and soluble potassium resources are in serious shortage. Over the years, due to the relatively low mining cost of soluble potassium resources, a large number of developments have caused the depletion of soluble potassiu...

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): C01F7/76C01F7/74
Inventor 赵伟齐涛秦鸣王丽娜初景龙曲景奎黎少华薛天艳余志辉
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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