Method for fluoride-free extraction of valuable components from ilmenorutile

A technology of rutile and ferroniobium, applied in chemical instruments and methods, inorganic chemistry, process efficiency improvement, etc., can solve problems such as hazardous waste gas, and achieve high economic value, high-efficiency extraction, full and rapid release

Active Publication Date: 2021-09-14
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] But due to volatility, about 6-7% of HF is lost in the process, which leads to hazardous waste gas, fluorine-containing waste water and fluorite residue discharge

Method used

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  • Method for fluoride-free extraction of valuable components from ilmenorutile
  • Method for fluoride-free extraction of valuable components from ilmenorutile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment provides a method for extracting valuable components without fluorine from ferro-niobium rutile, said method comprising the following steps:

[0053] (1) Carry out the first roasting and the second roasting successively to ferro-niobium rutile to obtain the roasted material; the auxiliary agent in the first roasting includes triethanolamine; the addition amount of the auxiliary agent in the first roasting is the ferroniobium 15% of rutile; the temperature of the first roasting is 300°C; the time of the first roasting is 80min; the auxiliary agent in the second roasting is salt, sodium carbonate; the auxiliary agent in the second roasting The mass ratio of the added amount to the niobium-iron rutile is 1.2:1; the temperature of the second calcination is 700°C; the time of the second calcination is 4h;

[0054] (2) The roasted material obtained in step (1) is subjected to water treatment and acid treatment successively to obtain an acid treatment liquid, a...

Embodiment 2

[0057] This embodiment provides a method for extracting valuable components without fluorine from ferro-niobium rutile, said method comprising the following steps:

[0058] (1) Carry out the first roasting and the second roasting successively to ferro-niobium rutile to obtain the roasted material; the auxiliary agent in the first roasting includes triethanolamine; the addition amount of the auxiliary agent in the first roasting is the ferroniobium 12% of rutile; the temperature of the first roasting is 250°C; the time of the first roasting is 70min; the auxiliary agent in the second roasting is alkali, potassium hydroxide and; the auxiliary agent in the second roasting The mass ratio of the additive amount of the agent to the niobium iron rutile is 1:1; the temperature of the second calcination is 600°C; the time of the second calcination is 2h;

[0059] (2) The roasted material obtained in step (1) is subjected to water treatment and acid treatment successively to obtain an a...

Embodiment 3

[0062] This embodiment provides a method for extracting valuable components without fluorine from ferro-niobium rutile, said method comprising the following steps:

[0063] (1) Carry out the first roasting and the second roasting successively to ferro-niobium rutile to obtain the roasted material; the auxiliary agent in the first roasting includes triethanolamine; the addition amount of the auxiliary agent in the first roasting is the ferroniobium 10% of rutile; the temperature of the first roasting is 200°C; the time of the first roasting is 60min; the auxiliary agent in the second roasting is alkali; the alkali is sodium hydroxide; the second The mass ratio of the amount of additives added during calcination to the niobium-iron rutile is 0.6:1; the temperature of the second calcination is 500°C; the time of the second calcination is 1h;

[0064] (2) The roasted material obtained in step (1) is subjected to water treatment and acid treatment successively to obtain an acid tre...

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Abstract

The invention relates to a method for fluoride-free extraction of valuable components from ilmenorutile. The method comprises the following steps of (1) sequentially carrying out primary roasting and secondary roasting on the ilmenorutile to obtain a roasted material; and (2) sequentially performing water treatment and acid treatment on the roasted material obtained in the step (1) to obtain acid treatment liquid, and then performing extraction and reverse extraction to obtain niobium-containing material liquid, wherein an auxiliary agent in the primary roasting comprises triethanolamine. The triethanolamine is introduced for roasting, the valuable components in rutile are activated and then released through pre-roasting treatment and interaction of functional groups of the triethanolamine and mineral phases in the rutile in the roasting process, then valuable metal is released more sufficiently and rapidly through subsequent roasting, and the release effect is enhanced; and the efficient extraction of niobium can be realized by introducing a small amount of oxalic acid in the acid treatment process, namely the efficient extraction of the niobium can be realized in a non-whole oxalic acid system.

Description

technical field [0001] The invention relates to the field of hydrometallurgy, in particular to a method for extracting valuable components from ferroniobium rutile without fluorine. Background technique [0002] Due to its high temperature resistance, corrosion resistance, and good superconductivity, the rare metal niobium is widely used in important fields such as steel, aerospace, superconducting materials, cutting-edge electronics, medical care, and nuclear industry, and has become an indispensable key strategy in modern industry. Metal. Most of the niobium resources in my country are characterized by low grade, complex distribution, and difficulty in decomposition, making resource utilization difficult. At the same time, the uneven distribution of niobium resources in the world has resulted in a high monopoly in the niobium market, and the price is determined by foreign industry giants. If the international situation changes significantly, it will seriously affect my co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/24
CPCC22B34/24C22B1/02C22B3/04C22B34/124C01G23/0532Y02P10/20
Inventor 齐涛孙林泉王丽娜于宏东陈德胜赵宏欣刘亚辉甄玉兰孟凡成
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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