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

A method of using sodium salt to strengthen the separation effect of aluminum and iron in high aluminum limonite

A technology for high-aluminum limonite and limonite, which is applied in the direction of improving process efficiency and the like, can solve the problems of fine embedded particle size and poor monomer dissociation performance, and achieves low production cost, convenient operation and simple process. Effect

Active Publication Date: 2021-04-23
内蒙古中盛工程技术有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems existing in the prior art, especially for the ore processing problems of aluminum minerals and iron minerals with fine particle size, mutual cementation, iron-aluminum and lattice substitution in the ore, and poor monomer dissociation performance. The method of using sodium salt to strengthen the separation effect of aluminum and iron of high aluminum limonite, the invention uses sodium salt to strengthen the separation of aluminum and iron of high aluminum limonite to obtain aluminum minerals and iron minerals, which is suitable for the aluminum and iron of various aluminum-containing iron ores Separation process, especially for the ore treatment of aluminum minerals and iron minerals with fine particle size, mutual cementation, iron-aluminum and lattice substitution in the ore, and poor monomer dissociation performance

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
  • A method of using sodium salt to strengthen the separation effect of aluminum and iron in high aluminum limonite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: TFe content is 34.51% in the high aluminum limonite in the present embodiment, Al 2 o 3 The content is 15.72%;

[0021] A kind of method utilizing sodium salt to strengthen the separation effect of aluminum and iron of high aluminum limonite (see figure 1 ),Specific steps are as follows:

[0022] (1) Crush and finely grind high alumina limonite until the particle size is not greater than 0.074mm to obtain high alumina limonite powder, add sodium salt solution to high alumina limonite powder and mix evenly to obtain a muddy mixture; the sodium salt The solution is NaOH aqueous solution, the amount of sodium salt solution added is 12.5% ​​of the mass of alluminite limonite powder, and the concentration of NaOH aqueous solution is 0.50g / mL;

[0023] (2) Heating the muddy mixture in step (1) at a uniform speed to a temperature of 500°C and roasting at a constant temperature for 60 minutes to obtain a roasted product, cooling the roasted product to room temp...

Embodiment 2

[0026] Embodiment 2: TFe content is 34.51% in the high aluminum limonite in the present embodiment, Al 2 o 3 The content is 15.72%;

[0027] A kind of method utilizing sodium salt to strengthen the separation effect of aluminum and iron of high aluminum limonite (see figure 1 ),Specific steps are as follows:

[0028] (1) Crush and finely grind high alumina limonite until the particle size is not greater than 0.074mm to obtain high alumina limonite powder, add sodium salt solution to high alumina limonite powder and mix evenly to obtain a muddy mixture; the sodium salt The solution is an aqueous NaOH solution, the amount of the sodium salt solution added is 16% of the mass of the high-alluminous limonite powder, and the concentration of the aqueous NaOH solution is 0.50 g / mL;

[0029] (2) Heating the muddy mixture in step (1) at a uniform speed to a temperature of 700°C and roasting at a constant temperature for 40 minutes to obtain a roasted product, cooling the roasted pro...

Embodiment 3

[0032] Embodiment 3: TFe content is 34.51% in the high aluminum limonite in the present embodiment, Al 2 o 3 The content is 15.72%;

[0033] A kind of method utilizing sodium salt to strengthen the separation effect of aluminum and iron of high aluminum limonite (see figure 1 ),Specific steps are as follows:

[0034] (1) Crush and finely grind high alumina limonite until the particle size is not greater than 0.074mm to obtain high alumina limonite powder, add sodium salt solution to high alumina limonite powder and mix evenly to obtain a muddy mixture; the sodium salt The solution is an aqueous NaOH solution, the amount of the sodium salt solution added is 15% of the mass of the high alumina limonite powder, and the concentration of the aqueous NaOH solution is 0.60 g / mL;

[0035] (2) Heating the muddy mixture in step (1) at a uniform speed to a temperature of 900°C and roasting at a constant temperature for 30 minutes to obtain a roasted product, cooling the roasted produc...

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
particle diameteraaaaaaaaaa
concentrationaaaaaaaaaa
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for using sodium salt to strengthen the separation effect of aluminum and iron of high alumina limonite, which belongs to the technical field of mineral processing and metallurgy. In the present invention, the high-alumina limonite is crushed and finely ground until the particle size is not greater than 0.074mm to obtain high-alumina limonite powder, and the sodium salt solution is added to the high-alumina limonite powder and mixed uniformly to obtain a muddy mixture; the muddy mixture Heating at a constant speed to a temperature of 500-900°C and roasting at a constant temperature for 30-60 minutes to obtain a roasted product, cooling the roasted product to room temperature, and grinding until the particle size is not greater than 0.074mm to obtain a roasted powder; add the roasted powder to the alkaline solution , leaching at a temperature of 80-120°C for 20-40 minutes, and solid-liquid separation to obtain an aluminum-rich liquid phase and an iron-rich solid phase. The invention utilizes sodium salt to strengthen the separation of aluminum and iron from high-aluminum limonite to obtain aluminum minerals and iron minerals, and is suitable for the aluminum-iron separation process of various aluminum-containing iron ores, especially for aluminum minerals and iron minerals with fine grain size. , mutual cementation, iron-aluminum, lattice substitution in the ore, and ore treatment with poor monomer dissociation performance.

Description

technical field [0001] The invention relates to a method for strengthening the separation effect of aluminum and iron of high-alumina limonite by using sodium salt, and belongs to the technical field of silicon monoxide preparation. Background technique [0002] High alumina limonite is a typical complex and refractory iron ore, because of its A1 2 o 3 If the content is high, if it is directly used as raw material for ironmaking, it will cause the slag to be 2 o 3 If the content is too high, the fluidity will deteriorate, the desulfurization ability will decrease, the coke ratio will increase, and the operation of the blast furnace will be difficult. [0003] The key to realizing the comprehensive utilization of this kind of high-alumina limonite ore is to realize the efficient separation of aluminum and iron, so that aluminum and iron can be recovered at the same time. Literature analysis shows that the iron minerals and aluminum minerals of this kind of high-alumina li...

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): C22B1/02C22B3/12C22B21/00
CPCC22B1/02C22B3/12C22B21/0007C22B21/0015Y02P10/20
Inventor 郑善举李萌蘖卜恒勇田时泓陆鑫李玲
Owner 内蒙古中盛工程技术有限公司