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Process for separation and production of titanium-rich materials from titanium-containing blast furnace slag

A technology for blast furnace slag and titanium-rich material, which is applied in the field of separating and producing titanium-rich material from titanium-containing blast furnace slag, can solve the problems of poor effect, difficult to control cooling rate, long oxidation time, etc., and achieves reasonable process design and thermal energy utilization. High efficiency, practical and simple equipment

Inactive Publication Date: 2008-07-16
隋智通
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1. The use of ordinary slag tanks has poor heat preservation effect, difficult to control cooling rate, and cannot fully utilize the physical heat of titanium-containing blast furnace slag itself, resulting in high energy consumption and high production costs.
[0012] 2. By adding FeO x Waiting to adjust the oxygen position of the slag, the oxidation time is long, the effect is poor, a large amount of physical heat needs to be added, and the production cost is high
The slag temperature is lower than 1400°C, the relative viscosity of the slag is high, the enrichment and growth effect of perovskite is poor, it is not conducive to the separation of slag and iron, and the 6-8% entrained metallic iron in the slag cannot be recovered

Method used

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  • Process for separation and production of titanium-rich materials from titanium-containing blast furnace slag
  • Process for separation and production of titanium-rich materials from titanium-containing blast furnace slag
  • Process for separation and production of titanium-rich materials from titanium-containing blast furnace slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Weigh 200g of titanium-containing blast furnace slag, whose composition is 24.79%TiO 2 , 20.14% CaO, 8.89% MgO, 13.86% Al 2 o 3 , 3.10% FeO, 5.89% MFe and 18.60% SiO 2 . Put the weighed titanium slag in the slag pot, heat and melt it, spray flammable gas into the slag, and adjust the temperature of the slag at about 1400°C; when the temperature is constant, add 4g of additive CaO to the slag in the slag pot , while (or after) adding the additive, blow air into the slag, the oxidation time is 5min, and the partial pressure of oxygen is 1-10 2 In the kPa range, the titanium component is selectively enriched in the perovskite phase. Afterwards, the temperature of the slag increases by about 30°C due to oxidation, reaching 1430°C; the cooling rate is controlled at 2°C / min in the temperature range of 1430-1100°C, and the perovskite phase grows selectively as the furnace cools to room temperature . After cooling, the oxidized condensate is crushed and ground to a partic...

Embodiment 2

[0052] Weigh 200g of titanium-containing blast furnace slag, whose composition is 24.79%TiO 2 , 20.14% CaO, 8.89% MgO, 13.86% Al 2 o 3 , 3.10% FeO, 5.89% MFe and 18.60% SiO 2 . Put the weighed titanium slag in the slag tank, heat it with resistance to melt the slag, spray flammable gas into the slag, adjust the temperature of the slag to 1400C, keep the temperature constant, let air in the molten state, and add additives at the same time CaO 8g, oxidation time 5min, oxygen partial pressure in 1-10 2 Within the range of kPa; after oxidation, the temperature of the slag rises to 1420°C, and the temperature is lowered within the temperature range of 1420-1100°C, and the cooling rate is 2°C / min; the cooled oxidized slag is crushed and ground, and the particle size is +100 mesh~- 200 mesh, after re-election, flotation, and discharge of tailings, 40.3% TiO 2 In addition, 7.8g of metallic iron microspheres were deposited at the bottom of the slag tank, and were separated by magn...

Embodiment 3

[0054] Weigh 200g of titanium-containing blast furnace slag, whose composition is 24.79%TiO 2 , 20.14% CaO, 8.89% MgO, 3.86% Al 2 o 3 , 3.10% FeO, 5.89% MFe and 18.60% SiO 2 . Put the weighed titanium slag in the slag tank, heat it with resistance to melt the slag, spray flammable gas into the slag, adjust the temperature of the slag to 1400°C, keep the temperature constant, and feed oxygen in the molten state, and add additives at the same time CaO 8g, oxidation time 5min, oxygen partial pressure in 1-10 2 In the kPa range, the slag temperature rises to 1450°C after oxidation. The temperature is lowered within the temperature range of 1450-1100°C, and the cooling rate is 2.0°C / min. After cooling, the oxidized condensate is crushed and ground to a particle size of +100 mesh to -200 mesh. After gravity separation and flotation, the tailings are discarded to obtain 41.8% TiO 2 of titanium-rich concentrates. In addition, 8.5g of metallic iron microspheres were deposited on...

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Abstract

A method for separating titanium from the slag containing titanium component, contains the following three steps: heating the slag in the slag tank, adding additives at the same time or after that, blowing oxidizing gases into the tank, stirring the slag constantly, causing titanium components selectively to enrich in perovskite phase, then controlling cooling rate for the slag cooling to room temperature, perovskite phase selectively growing up, finally, crushing the cooling condensate residue grinding and ore dressing perovskite to obtain titanium-rich material, magnetic-separating iron magnetic beads deposited on the metal slag to obtain vanadiferous iron. The process is reasonably designed with practical equipment easy to operate and can make use of the own energy of the slag to regulate the slag temperature, promote oxidation reaction in the slag, has high thermal efficiency, facilitate the promotion of selective enrichment of various titanium scattered in the phase of titanium for the deposition of ironic beads entrained in the slag, and is profit to the realization of comprehensive utilization of titanium, vanadium resources, and is easy for industrial production, is energy-saving and pollution-free.

Description

technical field [0001] The invention relates to a treatment method for recovering titanium components from titanium-containing blast furnace slag, in particular to a method for fully utilizing the energy of the slag itself and the energy released by oxidation of the slag to adjust the temperature of the slag and promote the oxidation reaction of the slag. Selectively enrich the titanium components dispersed in various titanium-containing phases, deposit the metallic iron droplets entrained in the slag, realize the comprehensive utilization of titanium resources, and separate and produce rich titanium from titanium-containing blast furnace slag for industrial production This method is especially suitable for blast furnace slag with a titanium oxide content of 15-30%. Background technique [0002] As we all know, vanadium-titanium magnetite is one of the abundant polymetallic paragenetic ores in my country, which contains 30-45% iron, TiO 2 6-15%,. The composition of the min...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B34/12
CPCY02P10/20
Inventor 隋智通张力付念新娄太平
Owner 隋智通
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