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Resource treatment method of titanium-bearing blast furnace slag and rich-titanium material acquiring method

A disposal method and blast furnace slag technology, applied in magnesium halide, aluminum halide, magnesium chloride and other directions, can solve the problems of high requirements for equipment and environmental measures, large acid consumption, low titanium leaching rate, etc. High levels, equipment and environmental measures require less demanding effects

Inactive Publication Date: 2017-11-17
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The method of directly leaching titanium components in titanium-containing blast furnace slag with hydrochloric acid consumes a lot of acid, and requires higher requirements for equipment and environmental measures
In addition, the main titanium-containing mineral perovskite in titanium-containing blast furnace slag does not react with hydrochloric acid, resulting in low titanium leaching rate

Method used

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  • Resource treatment method of titanium-bearing blast furnace slag and rich-titanium material acquiring method

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Effect test

Embodiment 1

[0037] In this embodiment, a method for enriching TiO in titanium-containing blast furnace slag 2 The method is implemented according to the following steps: crush titanium-containing blast furnace slag to 150-250 μm, remove iron by magnetic separation, and obtain blast furnace slag powder; Add 20% hydrochloric acid solution, filter at 90°C for 4 hours to obtain filtrate and acid leaching filter residue; the obtained acid leaching filter residue is according to the ratio of solid to liquid 1:1.2 (g / mL, the same below) Add it into 400g / L NaOH solution, react at a heating temperature of 50°C for 2 hours, then filter, and separate out the filter residue, which is titanium-rich material, the main components are perovskite and metatitanic acid, and a small amount that does not participate in the reaction residue.

Embodiment 2

[0039] In this embodiment, a method for enriching TiO in titanium-containing blast furnace slag 2 The method is implemented according to the following steps: crush the titanium-containing blast furnace slag to 150-250 μm, remove iron by magnetic separation, and obtain blast furnace slag powder; After leaching at 85°C for 4 hours, filter to obtain filtrate and acid leaching filter residue; add the obtained acid leaching filter residue to 380g / L NaOH solution according to the ratio of solid to liquid ratio of 1:1, and react at a heating temperature of 48°C After 2 hours, filter and separate the filter residue, which is titanium-rich material.

Embodiment 3

[0041] In this embodiment, a method for enriching TiO in titanium-containing blast furnace slag 2 The method is implemented according to the following steps: crush the titanium-containing blast furnace slag to 150-250 μm, remove iron by magnetic separation, and obtain the blast furnace slag powder; add the blast furnace slag powder into 22% hydrochloric acid solution according to the ratio of material to liquid 1:3.5, After leaching at 92°C for 3.5 hours, filter to obtain filtrate and acid leaching filter residue; add the obtained acid leaching filter residue to 350g / L NaOH solution according to the ratio of solid to liquid 1:1.5, and react at a heating temperature of 55°C After 3 hours, filter and separate the filter residue, which is titanium-rich material.

[0042] Based on the same inventive concept, the enrichment of TiO in titanium-containing blast furnace slag by acid-base combined process 2 At the same time, we can also further recycle other substances produced, such ...

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Abstract

The invention discloses a method for gathering TiO2 in titanium-bearing blast furnace slag and a resource treatment method of the titanium-bearing blast furnace slag and belongs to the technical field of comprehensive utilization of mineral resources. The method is implemented specifically according to the following steps that the titanium-bearing blast furnace slag is smashed to be 150-250 [mu]m, magnetic separation is conducted to remove iron, and blast furnace slag powder is obtained; the blast furnace slag powder is added into a hydrochloric acid solution with the concentration being 18-22% according to the solid-liquid rate of 1:2.5-3.5, the mixture is leached for 3.5-4 hours at the temperature of 85-92 DEG C and then filtered, and filtrate and acid-leaching filter residues are obtained; and the acid-leaching filter residues are added into a NaOH solution according to the solid-liquid rate of 1:1.0-1.5, the mixture is subjected to a reaction for 2-3 hours at the heating temperature of 48-55 DEG C and then filtered, filter residues are separated out, and the filter residues are a rich-titanium material. According to the method, titanium in the titanium-bearing blast furnace slag is gathered through an acid and alkali combined technology with high efficiency, low pollution and small acid consumption, the rich-titanium material with the high titanium content is prepared, and meanwhile other products are prepared.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of mineral resources, and in particular relates to a method for obtaining titanium-rich material through titanium-containing blast furnace slag and a resource disposal method for titanium-containing blast furnace slag. Background technique [0002] my country is rich in titanium resources, ranking first in the world, but the utilization rate of titanium resources is very low. At present, about 90% of my country's titanium resources are stored in the Panzhihua area in the form of vanadium-titanium magnetite. At present, Panzhihua Iron and Steel mainly uses the blast furnace process to smelt vanadium-titanium magnetite, and recovers iron and vanadium, while titanium is TiO 2 Form into blast furnace slag (mass fraction about 25%), due to the complex mineral phase structure, it is difficult to recycle. At present, more than 70 million tons of titanium-containing blast furnace slag ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B3/04C22B34/12C01F11/46C01F7/56C01F5/30C01B33/16
CPCC01B33/16C01F5/30C01F7/56C01F11/46C21B3/04C22B34/1213Y02P10/20Y02W30/50
Inventor 梁精龙李慧李运刚杨宇谢珊珊霍东兴
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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