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

Comprehensive utilization method of chemical flotation to treat low-grade bauxite

A chemical flotation and bauxite technology, applied in chemical instruments and methods, inorganic chemistry, aluminum compounds, etc., can solve the problems of poor product quality, large construction investment, long production process, etc., and achieve less equipment and simple process flow , High recovery effect

Inactive Publication Date: 2017-03-22
洛阳国兴矿业有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

99% of the proven bauxite in my country is diaspore bauxite, which is characterized by hard grinding, insoluble, high silicon, and low aluminum-silicon ratio. At present, bauxite in my country is mainly used to produce alumina , mainly based on the hybrid production process, the production process is long, the energy consumption is high, the construction investment is large, and the product quality is poor

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
  • Comprehensive utilization method of chemical flotation to treat low-grade bauxite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0048] The chemical flotation silicon removal step provided by the present invention and the embodiment 1.1 of producing white carbon black and recovering fluorine resources include the following steps:

[0049] Chemical flotation silicon removal: provide low-grade bauxite raw ore as shown in Table 1, and place it in a crusher for crushing, then place the crushed low-grade bauxite in a grinder for grinding to obtain The particle size is 100 mesh low-grade bauxite particles; take 10.00 g of the 100 mesh low-grade bauxite particles and place them in a fluidized bed reactor, and pass hydrogen fluoride gas into the fluidized bed reactor at 110 ° C, After reacting for 30 minutes, a desiliconized solid residue and a gas product containing silicon fluoride were obtained; the desiliconized solid residue was washed with water and filtered to obtain 6.969 g of high-grade bauxite product. X-ray fluorescence analysis method is used to analyze and know: SiO in high-grade bauxite products ...

Embodiment 12

[0055] The difference between Example 1.2 and Example 1.1 of the chemical flotation silicon removal step provided by the present invention and the preparation of white carbon black and the recovery of fluorine resources is:

[0056]In the step of removing silicon by chemical flotation, the reaction temperature of the low-grade bauxite particles and the hydrogen fluoride gas was 70° C., and the reaction was performed for 15 minutes to obtain 5.400 g of high-grade bauxite products. X-ray fluorescence analysis was used to analyze: SiO in high-quality bauxite products 2 The content is 1.41%, the removal rate of silicon is 97.65%, the content of fluorine is 23.41%, and the Al 2 O 3 The content is 68.53%.

[0057] In the step of producing silica by gas absorption and ammonolysis, the gas product is passed into the absorption tower at -4kPa, the gas product is hydrolyzed at 80°C, and the ammonia solution is neutralized in the ammonolysis still. The pH of the substance was 8, and i...

Embodiment 13

[0060] The chemical flotation desiliconization step provided by the present invention and the difference between Example 1.3 and Example 1.1 of preparing silica and recovering fluorine resources are:

[0061] In the step of removing silicon by chemical flotation, the reaction temperature of the low-grade bauxite particles and the hydrogen fluoride gas was 20° C., and the reaction was performed for 20 min to obtain 5.410 g of high-grade bauxite products. X-ray fluorescence analysis was used to analyze: SiO in high-quality bauxite products 2 The content is 5.19%, the removal rate of silicon is 91.33%, the content of fluorine is 19.80%, and the Al 2 O 3 The content is 65.20%.

[0062] In the step of gas absorption and ammonolysis, the gas product is passed into the absorption tower at -5 kPa, and the gas product is hydrolyzed at 78°C, and the substances in the ammonolysis kettle are neutralized after ammonolysis. The pH was 8, and it was aged at 78 °C for 2 hours; 2.70 g of si...

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
specific surface areaaaaaaaaaaa
particle sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a comprehensive utilization method for processing low-grade bauxite through a chemical floating method. The method mainly comprises steps: silicon removal through chemical floating, aluminum dissolving through an alkali dissolution reaction, aluminum oxide preparation through carbon calcinations, white carbon black preparation through gas absorption aminolysis, fluorine resource recycle and the like. According to the provided comprehensive utilization method, a series of products of white carbon black, iron red, aluminum fluoride and the like can be prepared, thus the effective components in low-grade bauxite can be utilized fully, fluorine resource is subjected to solidification cyclic utilization through ammonium hydroxide and waste of fluorine is reduced. The whole flow is simple, and used devices are few. In the provided method, pretreatment of low-grade bauxite is not needed, simple operation is employed, and the product can be obtained. The technology conditions are mild, and the provided is suitable for large-scale production.

Description

technical field [0001] The invention relates to low-grade bauxite, in particular to a comprehensive utilization method for treating low-grade bauxite by chemical flotation. Background technique [0002] With the rapid and sustainable development of the national economy, my country's aluminum industry has also undergone earth-shaking changes. The rapid development of the aluminum industry has better satisfied the needs of national economic construction and social development, but it has also brought about the problem of massive consumption of resources and energy. In particular, the lack of bauxite resources has become a bottleneck restricting the sustainable development of my country's aluminum industry. According to statistics, between 2001 and 2007, the grade of bauxite used for alumina and aluminum fluoride production in my country dropped significantly, and the ore aluminum-silicon ratio dropped from an average of about 10 to an average of less than 7. The commissioning...

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 Patents(China)
IPC IPC(8): C01F7/20C01B33/12C01C1/16
Inventor 王智辉张保民秦传钧张建设宁站昭王二军肖郁良张斌魏俊峰
Owner 洛阳国兴矿业有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com