Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oredressing method for removing sesquioxide of iron and aluminum

A technology of sesquioxide and beneficiation method, which is applied in flotation, solid separation and other directions, can solve the problems of phosphorus mineral loss, large mud content and high degree of weathering, and can reduce the content, simplify the purification process, and reduce the impurity content. low effect

Active Publication Date: 2011-09-14
YUNNAN PHOSPHATE CHEM GROUP CORP
View PDF5 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the large and fine mud content of collophosite and the high degree of weathering, there is no suitable high-efficiency desliming equipment to classify the raw ore, and it is easy to cause a large amount of direct loss of phosphorus minerals

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
  • Oredressing method for removing sesquioxide of iron and aluminum
  • Oredressing method for removing sesquioxide of iron and aluminum
  • Oredressing method for removing sesquioxide of iron and aluminum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Ore samples from Jinning Phosphate Mining Area, Yunnan, raw ore P 2 o 5 Content 19.74wt%, MgO content 1.31wt%, Fe 2 o 3 Content 1.68wt%, Al 2 o 3 The content is 2.69wt%. According to the above-mentioned process scheme of the present invention, phosphorus enrichment by forward and reverse flotation + reverse flotation to remove R under normal temperature conditions 2 o 3 The combined process flow to obtain phosphorous concentrate P 2 o 5 Content 30.40wt%, MgO content 0.26wt%, Fe 2 o 3 Content 0.90wt%, Al 2 o 3 Content 1.09wt%, where Fe 2 o 3 Exclusion rate: 72.51wt%, Al 2 o 3 Exclusion rate: 81.10wt%. Phosphate concentrate (Fe 2 o 3 +Al 2 o 3 +MgO)≤2.3wt%, CaO / P 2 o 5 =1.39, MgO / P 2 o 5 =0.86wt%, Fe 2 o 3 / P 2 o 5 =2.96wt%, Al 2 o 3 / P 2 o 5 =3.59wt%, MER=7.40wt% (Note: MER (impurity index) = (Fe 2 o 3 +Al 2 o 3 +MgO) / P 2 o 5 ).

Embodiment 2

[0035] Ore samples from Jinning Phosphate Mining Area, Yunnan, raw ore P 2 o 5 Content 20.03wt%, MgO content 1.13wt%, Fe 2 o 3 Content 1.73wt%, Al 2 o 3 The content is 3.21wt%. According to the above-mentioned technological scheme of the present invention, phosphorus-enriching + reverse flotation is used to remove R at room temperature. 2 o 3 The combined process flow to obtain phosphorous concentrate P 2 o 5 Content 30.96wt%, MgO content 0.60wt%, Fe 2 o 3 Content 0.81wt%, Al 2 o 3Content 0.79wt%, where Fe 2 o 3 Exclusion rate: 74.93wt%, Al 2 o 3 Exclusion rate: 82.06wt%. Phosphate concentrate (Fe 2 o 3 +Al 2 o 3 +MgO)≤2.2wt%, CaO / P 2 o 5 =1.39, MgO / P 2 o 5 =1.94wt%, Fe 2 o 3 / P 2 o 5 =2.62wt%, Al 2 o 3 / P 2 o 5 =2.55wt%, MER=7.11wt% (Note: MER (impurity index) = (Fe 2 o 3 +Al 2 o 3 +MgO) / P 2 o 5 ).

Embodiment 3

[0037] Mining sample of Kunyang Phosphate Mine in Yunnan Province, raw ore P 2 o 5 Content 23.47wt%, MgO content 4.98wt%, Fe 2 o 3 Content 1.31wt%, Al 2 o 3 The content is 1.19wt%. According to the above-mentioned technological scheme of the present invention, under normal temperature conditions, phosphorus enrichment through single reverse flotation + reverse flotation to remove R 2 o 3 The combined process flow to obtain phosphorous concentrate P 2 o 5 Content 30.66wt%, MgO content 0.55wt%, Fe 2 o 3 Content 0.81wt%, Al 2 o 3 Content 0.98wt%, where Fe 2 o 3 Exclusion rate: 51.62wt%, Al 2 o 3 Exclusion rate: 48.27wt%. Phosphate concentrate (Fe 2 o 3 +Al 2 o 3 +MgO)≤2.34wt%, CaO / P 2 o 5 =1.46, MgO / P 2 o 5 =1.79wt%, Fe 2 o 3 / P 2 o 5 =2.64wt%, Al 2 o 3 / P 2 o 5 =3.20wt%, MER=7.63wt% (Note: MER (impurity index) = (Fe 2 o 3 +Al 2 o 3 +MgO) / P 2 o 5 ).

[0038] In the 3 examples, the obtained phosphorus concentrate indicators all reached the fir...

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 relates to an oredressing method for pertinently reducing content of sesquioxide of iron and aluminum (R2O3) in the collophanite floatation process in advance. The process comprises the following steps of: (1) levigating raw collophanite until grains with the grain size of 0.038mm are more than or equal to 76 weight percent, and controlling the pulp mixing concentration to be 25-40 weight percent; (2) introducing ore pulp into a mineralizing agitation tank of a floatation machine, adding an agent for floating conventional mid-low grade collophanite for pneumatic flotation, ensuring that a spindle speed of the floatation machine is 1,800-2,100r / min, the floating aeration quantity is 0.05-0.10m<3> / h and the floating scraper speed is 20-30r / min, and obtaining phosphate concentrate subjected to rough concentration; and (3) controlling the pH of the phosphate concentrate subjected to rough concentration to be 4.5-5.5, adding a collector for removing R2O3, performing pneumatic flotation for 4 to 8 minutes, removing an impurity of R2O3 from foam, and obtaining base flow, namely a high grade phosphate concentrate product. By the method, the R2O3 content in the concentrate can be obviously reduced, the quality of the phosphate concentrate is improved, and production processes, flows and cost during purification in the subsequent acid making process can be reduced.

Description

Technical field [0001] The invention relates to a method for reducing impurity iron and aluminum sesquioxides (R 2 o 3 ) content, to obtain high-grade phosphorus concentrate with low impurity content, to reduce the difficulty of phosphoric acid production and purification, and to simplify the phosphoric acid purification process and operating cost of the beneficiation method. Background technique [0002] With the rapid development of the phosphate fertilizer industry, the mining and consumption of phosphate rock have also increased sharply, the overall grade of phosphate rock has been declining, and the impurity components in phosphoric acid have become more and more complex. In particular, impurities such as iron, aluminum, and magnesium seriously affect the quality of phosphoric acid and the quality of further purification processing and high-end products. When raw material R 2 o 3 When the content exceeds 3wt%, it will reduce the production capacity of the fertilizer...

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): B03D1/00B03B1/00B03D1/018
Inventor 罗廉明杨稳权夏敬源刘鑫刘丽芬谢国先彭杰李若兰张树洪
Owner YUNNAN PHOSPHATE CHEM GROUP CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com