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

Bauxite tailings-based iron ore pellet binder and preparation method thereof

A bauxite and binder technology, which is applied in the field of bauxite dressing tailings-based iron ore pellet binder and its preparation, to reduce land occupation and harm to the environment, good pelletizing performance, and The effect of improved compressive and abrasion resistance

Active Publication Date: 2014-10-15
ZHENGZHOU UNIV
View PDF22 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods are limited to iron-containing tailings, and there is no report on the preparation of iron ore pellet binders from bauxite beneficiation 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
  • Bauxite tailings-based iron ore pellet binder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An iron ore pellet binder prepared from bauxite beneficiation tailings as the main raw material is made of the following raw materials in weight percentage:

[0025] 80% bauxite beneficiation tailings, its aluminum-silicon ratio is 1.2, the slurry potential of 10% mass concentration is -225 mV, and the particle size is ≤0.074 mm;

[0026] Carboxymethylcellulose sodium 15%, pH 10, average molecular weight 10,000 Daltons, solution viscosity of 3% mass concentration 1800 mPa.s, particle size ≤ 0.074 mm;

[0027] Polyferric chloride 3%, particle size <0.074 mm;

[0028] Na 2 CO 3 2%.

[0029] The preparation method of the above-mentioned binder comprises the following steps: first mix the polyferric chloride and the bauxite beneficiation tailings evenly, and then add carboxymethylcellulose sodium and Na 2 CO 3 Mix well, then add water to perform ball milling mechanical activation treatment; the high-energy ball milling speed is 600 r / min, the ball-to-material ratio is...

Embodiment 2

[0032] An iron ore pellet binder prepared from bauxite beneficiation tailings as the main raw material is made of the following raw materials in weight percentage:

[0033] Bauxite beneficiation tailings are 75%, its aluminum-silicon ratio is 1.0, the slurry potential of 10% mass concentration is -245 mV, and the particle size is <0.074 mm;

[0034] Carboxymethylcellulose sodium 15%, pH 10, average molecular weight 10,000 Daltons, solution viscosity of 3% mass concentration 1800 mPa.s, particle size ≤ 0.074 mm;

[0035] Polyferric chloride 5%, particle size <0.074 mm;

[0036] Na 2 CO 3 5%.

[0037] The preparation method of the above-mentioned binder comprises the following steps: first mix the polyferric chloride and the bauxite beneficiation tailings evenly, and then add carboxymethylcellulose sodium and Na 2 CO 3 Mix well, then add water for mechanical activation by ball milling; the high-energy ball milling speed is 800 r / min, the ball-to-material ratio is 30%, the ...

Embodiment 3

[0040] An iron ore pellet binder prepared from bauxite beneficiation tailings as the main raw material is made of the following raw materials in weight percentage:

[0041] 80% bauxite beneficiation tailings, its aluminum-silicon ratio is 1.2, the slurry potential of 10% mass concentration is -225 mV, and the particle size is <0.074 mm;

[0042] Humic acid 15%, pH 9.5, average molecular weight 15000 Daltons, solution viscosity of 3% mass concentration is 2100 mPa.s, particle size ≤ 0.074 mm;

[0043] Polyferric chloride 3%, particle size <0.074 mm;

[0044] Na 2 CO 3 2%.

[0045] The preparation method of the above-mentioned binder comprises the following steps: first mix the polyferric chloride and the bauxite beneficiation tailings evenly, and then add humic acid and Na 2 CO 3 Mix well, then add water to perform ball milling mechanical activation treatment; wherein the high-energy ball milling speed is 800r / min, the ball-to-material ratio is 50%, the activation time is...

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
Solution viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a bauxite tailings-based iron ore pellet binder. The bauxite tailings-based iron ore pellet binder is prepared by the following raw materials in percentage by weight: 70-85% of bauxite tailings, 10-20% of accelerant, 3-5% of polymerization ferric chloride, and 2-5% of Na2CO3. A preparation method of the binder comprises the following steps: after being evenly mixed, all the raw materials are activated by adopting a ball milling machine to obtain the bauxite tailings-based iron ore pellet binder. The invention aims at realizing efficient utilization of refractory secondary resources, and develops the bauxite tailings-based iron ore pellet binder which can serve as a substitute for a traditional binder (bentonite) in the iron ore pellet industry. Meanwhile, the land occupation by the tailings and the environmental harms caused by the tailings can be substantially reduced, so that the resource problem of the massive stacked tailings is solved and the production cost of pellets is reduced. Therefore, the bauxite tailings-based iron ore pellet binder has prominent economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a bauxite beneficiation tailings-based iron ore pellet binder and a preparation method thereof. Background technique [0002] my country is rich in bauxite resources, but there is a shortage of high-quality bauxite resources, mainly insoluble diaspore-type bauxite with high aluminum and high silicon, and the low aluminum-silicon ratio makes it difficult to meet the more economical conventional Bayer process. Requirements for the production of alumina technology. In order to make reasonable use of low- and medium-grade bauxite resources, Chinese scientific researchers began to use beneficiation methods to pre-treat low-quality bauxite, and achieved good aluminum-silicon separation effects, providing high-quality raw materials for the Bayer process and forming A new process for producing alumina by beneficiation Bayer process has been discovered, and it has b...

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): C22B1/242
Inventor 黄艳芳韩桂洪
Owner ZHENGZHOU UNIV
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