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Method for separating and extracting valuable metal from iron vanadium titanium chrome multi-metal metallurgical materials

A valuable metal and multi-metal technology, which is applied in the field of separation and extraction of valuable metals from iron-vanadium-titanium-chromium multi-metallurgical materials, can solve the problems of high equipment requirements, low chromium leaching rate, low vanadium chromium leaching rate, etc., and achieve low cost , The effect of simple process

Inactive Publication Date: 2018-07-31
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium roasting can obtain high vanadium leaching, but the chromium leaching rate is lower than 70%; sulfuric acid plus sodium chlorate oxidation leaching, vanadium chromium leaching rate is lower than 80%
The leaching rate of vanadium and chromium in hydrochloric acid high-pressure leaching can exceed 90%, but the selectivity of hydrochloric acid pressure leaching is poor, and the leaching solution contains a large amount of iron in addition to vanadium and chromium. Only by treatment can high-quality titanium slag be obtained. In addition, hydrochloric acid pressure leaching is highly corrosive and requires high equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Take 500g of iron-vanadium-titanium-chromium polymetallurgical material containing 22.32% Ti, 6.89% Fe, 7.34% Mg, 8.31% Si, 6.28% Al, 2.47% Ca, 0.92% Cr, and 1.34% V with a particle size of negative 180 mesh , mix with a solution containing 1.5% ammonium chloride according to the solid-liquid ratio of 1:3g / mL and adjust the pH of the solution to 6, and control the air flow to 8m 3 / h, stirred and oxidized at a temperature of 100°C for 10 hours, and separated solid and liquid to obtain filtrate A1 and filter residue A1; filter residue A1 was mixed with a hydrochloric acid solution with a H+ concentration of 10mol / L at 90 The mixture was stirred and reacted at ℃ for 2 hours, and the solid and liquid were separated to obtain filtrate B1 and filter residue B1. Add sodium hydroxide to the filtrate B1 to adjust the pH of the solution to 3.5, react at 200°C for 0.5 hours, filter and dry at 110°C to obtain the product iron oxide red. Fe in iron red 2 o 3 The content is 97.5%...

Embodiment 2

[0070] Get the particle size that contains Ti 23.19%, Fe 4.32%, Mg 8.01%, Si 8.12%, Al 6.34%, Ca 2.21%, Cr1.51%, V 0.98% and be minus 200 mesh iron-vanadium-titanium-chromium polymetallurgical material 300g, According to solid-liquid ratio 1: 2g / mL mixes with the filtrate A1 that embodiment 1 obtains and adjusts solution pH to be 7, and control air flow is 3m 3 / h, stir and oxidize at room temperature for 20 hours, and separate solid and liquid to obtain filtrate A2 and filter residue A2; filter residue A2 is mixed with sulfuric acid solution with H+ concentration of 2mol / L at a solid-liquid ratio of 1:5g / mL and stirred at 100°C After reacting for 3 hours, solid-liquid separation was carried out to obtain filtrate B2 and filter residue B2. Add ammonia water to the filtrate B2 to adjust the pH of the solution to 7, react at 120°C for 4 hours, filter and dry at 110°C to obtain the product iron oxide red. Fe in iron red 2 o 3 The content is 96.8%, and the recovery rate of iron...

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Abstract

The invention belongs to the field of mineral waste recovery and particularly discloses a method for separating and extracting valuable metal from iron vanadium titanium chrome multi-metal metallurgical materials. The method includes the following steps that (1) air is blown into feed liquid where the iron vanadium titanium chrome multi-metal metallurgical materials are dispersed, an oxidation reaction is performed, then filter residues A are obtained through solid-liquid separation, and iron-rich filter liquid B and filter residues B are obtained by conducting acid leaching and solid-liquid separation on the filter residues A; and (2) the filter residues B, alkali and oxidizing agents are mixed and then react at the temperature of 300-600 DEG C, reaction products are subjected to water leaching and then solid-liquid separation, and vanadium and chrome-rich filter liquid C and titanium-rich filter residues C are obtained. The method has the advantages that the process is simple cost islow, iron, vanadium, chrome and titanium in the iron vanadium titanium chrome multi-metal metallurgical materials can be comprehensively used, and the method is suitable for industrial application.

Description

technical field [0001] The invention belongs to the field of mineral waste recycling, and in particular relates to a method for separating and extracting valuable metals from iron, vanadium, titanium, chromium polymetallurgical materials. Background technique [0002] Vanadium-titanium magnetite is a compound ore in which iron, vanadium, titanium, chromium and other valuable elements coexist, and has extremely high comprehensive utilization value. At present, the main treatment method of vanadium-titanium magnetite is the blast furnace-converter method, which can extract iron and vanadium, but titanium cannot be recovered after entering the blast furnace slag, and chromium is also difficult to extract and utilize. The solid phase reduction-grinding method is to selectively reduce the iron oxides in the vanadium-titanium magnetite to metallic iron under solid-state conditions, and make it grow to a certain particle size, while the elements such as vanadium, titanium, chromium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B1/00C22B3/06C22B3/04C22B34/12C22B34/22C22B34/32
CPCC22B1/005C22B3/04C22B3/06C22B7/006C22B7/007C22B34/1213C22B34/22C22B34/32Y02P10/20
Inventor 王明玉黄胜陈边防王学文杨明鄂葛奇杜艳苹刘彪
Owner CENT SOUTH UNIV
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