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Method for separating and extracting metal element from varadium-titanium magnetite

A vanadium-titanium magnetite and metal element technology, applied in the field of mineral processing, can solve the problems of difficult control of vanadium-titanium flow direction, long reduction time, long production process, etc., achieve significant social and economic benefits, and fast reduction reaction speed , The effect of shortening the production cycle

Inactive Publication Date: 2005-07-20
SICHUAN LOMON MINING & METALLURGY
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Problems solved by technology

The extraction process of sodium oxide is to extract vanadium by leaching and oxidizing the roasting water of the pellets first, and then directly reduce the pellets in the rotary kiln after soaking the vanadium-electric furnace melting, which can realize the comprehensive recovery of iron, vanadium and titanium, iron, vanadium The recovery rates of titanium and titanium are 85-89%, 58% and 74% respectively, but the production process is long, the consumption of sodiumizing agent is high, the strength of the pellets after vanadium extraction is poor, and the reduction in the rotary kiln is easy to pulverize and form rings. The recovery rate is low; the high-temperature reduction method is that the iron concentrate pellets are first consolidated by high-temperature preheating (900-1000°C), and then reduced by a rotary kiln----electric furnace melting to separate iron, vanadium and titanium, and molten iron blowing to extract vanadium Vanadium and titanium are recovered in or slag, and the recovery rates of iron, vanadium and titanium are 89%, 55% and 80% respectively, realizing the comprehensive recovery of iron, vanadium and titanium, reducing the consumption of sodiumizing agent, but there is still a long production process (two-step combustion) processing), high energy consumption, unstable separation effect of iron and vanadium and titanium during electric furnace melting, difficulty in controlling the flow direction of vanadium and titanium, and low recovery rate of vanadium and titanium
Application No. 99115348.0 Chinese Patent Application "Comprehensive Utilization of Vanadium-Titanium Magnetite New Technology" proposed "cold solidification pellet direct reduction method", which shortens the process flow, reduces the consumption of sodiumizing agent, and improves the iron content. The recovery rate of the three elements of vanadium and titanium, but there are still problems of long reduction time and low production efficiency

Method used

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  • Method for separating and extracting metal element from varadium-titanium magnetite

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Experimental program
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Effect test

Embodiment 1

[0021] As shown in Figure 1, the vanadium-titanium magnetite concentrate (composition is: TFe 58.64%, FeO 19.69%, TiO 2 11.06%, V 2 o 5 0.71%, Cr 2 o 3 0.021%, Co 0.010%, Ni 0.0015%, SiO 2 1.68%, Al 2 o 3 3.13%, CaO 0.38%, MgO 1.78%, S 0.093%, P 0.021%. Grinding particle size: -200 mesh size 85%. ), coal powder (composition: ash 9.93%, volatile matter 10.49%, fixed carbon 78.19%, calorific value 30.75MJ / kg; coal powder particle size: -120 mesh accounts for 86%, coal powder dosage: 230kg / t iron concentrate), additives (Na 2 CO 3 , the dosage is 3-5% of the mineral powder), binder (carboxymethyl cellulose, concentration: 0.3-0.5%, the dosage is 0.025-0.03% of the mineral powder) mixed in proportion and pressed into a diameter of 10-15mm spherical shape, dried at 80°C and then loaded into a rotary hearth furnace. The temperature of the furnace is controlled at 1200°C. After 60 minutes of reduction, it is cooled and taken out. The total reduction period is 150 minu...

Embodiment 2

[0023] As shown in Figure 1, the vanadium-titanium magnetite concentrate (composition is: TFe 59.98%, FeO 20.06%, TiO 2 10.97%, V 2 o 5 0.76%, Cr 2 o 3 0.023%, Co 0.012%, Ni 0.011%, SiO 2 1.52%, Al 2 o 3 3.05%, CaO 0.19%, MgO 1.70%, S 0.018%, P 0.024%. The particle size of the iron concentrate is: 84-87% of the particle size of -200 mesh. ), coal powder (composition is: ash content 8.62%, volatile matter 17.73%, fixed carbon 73.47%, S 0.56%, particle size is -200 mesh particle size 70-75%, coal powder dosage is 260kg / t iron concentrate ore), additives (Na 2 CO 3 , the dosage is 4-6% of the mineral powder), binder (carboxymethyl cellulose, the concentration is about 0.5%, the dosage is 0.03-0.035% of the mineral powder) mixed in proportion and pressed into a diameter of 10- 15mm spherical shape, dried at 2 56%±, V 2 o 5 3.89%. It can be used as raw material for extracting vanadium and titanium. After melting, the recovery rate of iron is over 96%, and the re...

Embodiment 3

[0025] As shown in Figure 1, the vanadium-titanium magnetite concentrate (composition is: TFe 56.36%, FeO 23.67%, TiO 2 13.58%, V 2 o 5 0.55%, Cr 2 o 3 0.002%, Co 0.014%, Ni 0.008%, SiO 2 1.17%, Al 2 o 3 3.86%, CaO 0.21%, MgO 3.03%, S 0.24%, grinding particle size: -200 mesh size 85%. ), coal powder (high volatile lignite, composition: C58.20%, V32.63%, A8.44%, S0.83%; coal powder particle size: -120 mesh, accounting for 80% to 85%; coal Powder dosage: 280kg / t iron concentrate), additives (Na 2 CO 3 , the amount is 3-5% of the mineral powder), binder (polyvinyl alcohol, concentration: 1%, the dosage is 0.03-0.035% of the mineral powder) mixed in proportion and pressed into a diameter of 10-15mm Spherical, dried and loaded into a rotary hearth furnace. The temperature of the furnace is controlled at 1400°C. After 35 minutes of reduction, it is cooled and taken out. The total reduction period is 90 minutes, and the metallization rate reaches 93%. Then it is melted ...

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Abstract

The technological process of separating and extracting metal elements from V-Ti iron ore includes the steps of: agglomerating ore powder of mixing V-Ti iron ore powder, reductant, additives and adhesive, pressing the mixture into 10-25 mm diameter agglomerates and drying at 80-90 deg.c; reducing inside one bottom rotating furnace to obtain metal products; smelting the metal products in an electric furnace to obtain molten iron and V-Ti slag component, and smelting the V-Ti slag component to obtain V-Cr oxide and Ti slag as the material for producing titanium while. The present invention has high reduction temperature, fast reduction speed, short reduction time, high production efficiency, high metal and V-Ti recovering rate and less environmental pollution.

Description

Technical field: [0001] The invention relates to a mineral processing method, in particular to a method for separating and extracting metal elements from vanadium-titanium magnetite. Background technique: [0002] Vanadium-titanium magnetite is a composite iron ore containing beneficial elements such as iron, titanium, vanadium, and chromium. For the separation, extraction and comprehensive utilization of vanadium-titanium magnetite, the traditional methods are mainly two methods: high-temperature oxidized sodium roasting and high-temperature reduction (Edited by Wang Wenzhong, "Comprehensive Utilization of Composite Ore"). The extraction process of sodium oxide is to extract vanadium by leaching and oxidizing the roasting water of the pellets first, and then directly reduce the pellets in the rotary kiln after soaking the vanadium-electric furnace melting, which can realize the comprehensive recovery of iron, vanadium and titanium, iron, vanadium The recovery rates of tita...

Claims

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Application Information

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IPC IPC(8): C21B3/00C21B3/02C21B3/04C22B7/04
CPCY02P10/20Y02W30/50
Inventor 李家权范先国陈厚生傅文章龚家竹胡晓秦廷许洪益成杨绍利程国荣温铭箴马华云黄守华
Owner SICHUAN LOMON MINING & METALLURGY
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