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A kind of treatment process of vanadium-titanium-iron symbiotic ore

A treatment process and symbiotic ore technology, applied in the field of metallurgy, can solve the problems of difficult realization of iron, vanadium and titanium resources, low degree of development and utilization, environmental pollution, etc., and achieve the effect of improving comprehensive utilization rate, strong applicability and reducing pollution

Active Publication Date: 2021-04-06
昆明禾丰环境研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the comprehensive utilization of vanadium-titanium magnetite resources at home and abroad mainly includes two steps, the separation of ores and the smelting of sorted products. Among them, the beneficiation technology of vanadium-titanium magnetite has become increasingly mature, and how to It is still difficult to realize the efficient utilization of iron, vanadium and titanium resources through subsequent smelting. Therefore, the difficulty and main work of the development and utilization of vanadium-titanium magnetite lies in the research and development of advanced smelting technology and industrial application
[0004] Studies and reports have shown that there are more than a dozen methods for the utilization of vanadium-titanium magnetite at home and abroad, among which the representative methods are shaft furnace reduction-electric furnace melting, sulfuric acid method and chlorination method to produce titanium dioxide, sodium roasting- Water leaching to extract vanadium, etc., but the overall development and utilization level is still very low, and the environmental pollution is also serious

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  • A kind of treatment process of vanadium-titanium-iron symbiotic ore

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Mix vanadium-titanium iron ore, anthracite, and sodium carbonate in a mass ratio of 100:15:5, mechanically press them into blocks, put the blocks into a Φ250±2 mm SiC refractory tank, and push them into 138 The reduction reaction is carried out in the rice tunnel kiln. The three-stage reduction temperature is 950, 1100, and 1200°C in sequence, and the total reduction time is 25 hours. After cooling to below 250°C, the kiln is discharged and the tank is unloaded.

[0053](2) Crushing and grinding the reduced product obtained in step (1) until the particle size is -320 mesh, accounting for 80%; after the grinding, the ore material enters the second-stage ball mill for regrinding, and the particle size of the second-stage grinding is -320 mesh, accounting for 95%. After the second-stage grinding, magnetic separation is carried out twice, and the magnetic field strength is 200mT. After magnetic separation, reduced iron powder and vanadium-containing titanium-rich slag ar...

Embodiment 2

[0059] (1) Mix vanadium-titanium iron ore, anthracite, and sodium carbonate at a mass ratio of 100:20:5, mechanically press them into blocks, put the blocks into a Φ250±2 mm SiC refractory tank, and push them into 138 The reduction reaction is carried out in the rice tunnel kiln. The three-stage reduction temperature is 1000, 1150, and 1200°C in sequence, and the total reduction time is 25 hours. After cooling to below 250°C, the kiln is discharged and the tank is unloaded.

[0060] (2) Crushing and grinding the reduced product obtained in step (1) until the particle size is -320 mesh, accounting for 80%; after the grinding, the ore material enters the second-stage ball mill for regrinding, and the particle size of the second-stage grinding is -320 mesh, accounting for 95%. After the second-stage grinding, magnetic separation is carried out twice, and the magnetic field strength is 200mT. After magnetic separation, reduced iron powder and vanadium-containing titanium-rich slag ...

Embodiment 3

[0066] (1) Mix vanadium-titanium iron ore, anthracite, and sodium carbonate at a mass ratio of 100:25:7, mechanically press them into blocks, put the blocks into a Φ250±2 mm SiC refractory tank, and push them into 138 The reduction reaction is carried out in the rice tunnel kiln. The three-stage reduction temperature is 1000, 1100, and 1200°C in sequence, and the total reduction time is 25 hours. After cooling to below 250°C, the kiln is discharged and the tank is unloaded.

[0067] (2) Crushing and grinding the reduced product obtained in step (1) until the particle size is -320 mesh, accounting for 80%; after the grinding, the ore material enters the second-stage ball mill for regrinding, and the particle size of the second-stage grinding is -320 mesh, accounting for 95%. After the second-stage grinding, magnetic separation is carried out twice, and the magnetic field strength is 150mT. After magnetic separation, reduced iron powder and vanadium-containing titanium-rich slag ...

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Abstract

The invention discloses a process for treating vanadium-titanium-iron symbiotic ore, which adopts a carbon reducing agent inside and an automatic tunnel kiln direct reduction method to reduce iron to a metal state, and after cooling, grind ore and magnetically separate iron powder; The obtained vanadium-titanium-containing mixture is used to improve the production process of sulfuric acid titanium dioxide, and acid-decompose the vanadium-titanium enrichment to obtain TiO 2 and vanadium-containing waste acid solution, adjust the pH value of the solution, and recover vanadium by ion exchange. By improving the traditional production process, this technology greatly reduces production energy consumption and labor intensity, reduces environmental pollution, realizes comprehensive utilization of resources, and ensures the quality of each product.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a process for treating vanadium-titanium-iron paragenetic ore. Background technique [0002] Vanadium ilmenite is a composite ore with multi-element symbiosis such as iron, vanadium and titanium. It is rich in reserves in Panxi, Chengde and Ma'anshan in my country. use value. As a province with a large mineral resource in my country, Yunnan Province not only has abundant tin, zinc, germanium, copper and other resources, but also has an important strategic resource. In the past 20 years, it has low-keyly supported the country's major industries and has not received due attention. And reputation, that is, the vanadium and titanium resources in Yunnan Province are currently in the early stage of development. [0003] At present, the comprehensive utilization of vanadium-titanium magnetite resources at home and abroad mainly includes two steps, the separation of ores a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B3/42C22B34/12C22B34/22B02C21/00B02C23/14B03C1/02
CPCB02C21/00B02C23/14B03C1/02C22B3/08C22B3/42C22B34/125C22B34/22Y02P10/20
Inventor 蒋朋钢武小琪张正忠
Owner 昆明禾丰环境研究所