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A method for enrichment and separation of vanadium-titanium magnetite

A vanadium-titanium magnetite enrichment technology, which is applied in the direction of improving process efficiency, can solve the problem of low Ti grade in magnetic separation tailings, and achieve the effect of avoiding high equipment requirements, stable equipment operation, and efficient capture

Active Publication Date: 2020-11-06
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This method puts forward a new idea for the comprehensive utilization of vanadium-titanium magnetite, and realizes the efficient separation of iron and titanium. However, the grade of Ti contained in the magnetic separation tailings of this method is low, and the further enrichment and utilization of Ti is the industrial application of this method. the key to further research and development

Method used

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  • A method for enrichment and separation of vanadium-titanium magnetite

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Experimental program
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Effect test

Embodiment 1

[0036] Take 1000g vanadium-titanium magnetite concentrate (TFe 53%, TiO 213.4%), mixed with 30gNaCl, 20gCaO, and 300g coal powder and mixed evenly. Among them, the particle size of vanadium titanomagnetite powder was 0.9mm, and the particle size of coal powder was 1.9mm. Add 200mL of polyacrylamide solution with a mass concentration of 1.5‰ as a The pellets were made into pellets, and the pellets were roasted at a constant temperature of 1000°C for 2 hours, then heated to 1200°C, roasted at a constant temperature for 3 hours, and the produced roasted balls were gradually cooled to 750°C for 6 hours, and then quenched and quenched in water after slow cooling, and the output of roasted balls was 830g; Baking ball crushing and ball milling, 75% of the particle size is less than 74μm, gravity separation on the slurry shaker, and 346g of gravity-selected iron concentrate (Fe 92.71%, TiO 2 2.07%), secondary concentrate 321g (Fe51.49%, TiO 2 28.32%) and gravity separation tailings...

Embodiment 2

[0038] Take 1000g vanadium-titanium magnetite concentrate (TFe 53%, TiO 2 13.4%), mixed with 40gCaCl 2 , 30gNa 2 CO 3 , 320g coal powder and mix well, wherein, vanadium-titanium magnetite ore powder particle size is 0.85mm, coal powder particle size is 1.8mm, add 30g sodium humate as binder to granulate, pellets are roasted at 1050°C for 1 hour and then heated to 1300°C, constant temperature roasting for 2 hours, the produced roasted balls were gradually cooled to 800°C for 8 hours, and then quenched and quenched in water after slow cooling, and the output roasted balls were 847g; the roasted balls were crushed and ball milled, and the particle size was less than 74μm, accounting for 68%. Separation, output gravity separation concentrate 415.5g (Fe 93.84%, TiO 2 1.02%), secondary concentrate 284g (Fe43.7%, TiO 2 31.73%) and tailings 147g (Fe 12.9%, TiO 2 26.24%); the sub-concentrate was ball milled again, and the particle size was less than 74μm, accounting for 92%, a...

Embodiment 3

[0040] Take 1000g vanadium-titanium magnetite (TFe 45%, TiO 2 24.5%), mixed with 40gKCl, 10gCaF 2 , 225g of coal powder and mix well, add 40g of asphalt as a binder to granulate, the pellets are roasted at a constant temperature of 1000°C for 1.5h, then heated to 1230°C, roasted at a constant temperature for 2.5h, and the baked balls produced are gradually cooled to 770°C for 5h. After slow cooling, water quenching and rapid cooling produced 860g of roasted balls; the roasted balls were crushed and ball milled, and the particle size was less than 74μm, accounting for 69%. 2 1.89%), secondary concentrate 394g (Fe 37.2%, TiO 2 49.72%) and tailings 158g (Fe 11.72%, TiO 2 27.38%); the sub-concentrate was ball milled again, and the particle size was less than 74μm, accounting for 91.2%. 2 2.13%), titanium concentrate 251.2g (Fe17.28%, TiO 2 76.8%); the iron enrichment rate of iron concentrate is 92%, and the titanium enrichment rate of titanium concentrate is 78%.

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Abstract

The invention discloses a vanadium-titanium magnetite enrichment and separation method. The method comprises steps that (1), vanadium-titanium magnetite mineral powder, coal powder, composite additives and binders are mixed together and pressed into pellets; (2), the pellets obtained in the step (1) is subjected to metallization reduction; (3), materials obtained in the step (2) is subjected to water quenching and rapid cooling after slow cooling; (4), the materials obtained in the step (3) is broken and subjected to ball milling, ball-milling pulp is obtained, then the ball-milling pulp is subjected to gravity concentration and separation, gravity concentration iron ore concentrate, sub-concentrate and gravity concentration tailings are obtained; and (5), the sub-concentrate obtained in the step (4) is subjected to fine grinding and magnetic separating, and magnetic separated iron ore concentrate and titanium concentrate are obtained. The vanadium-titanium magnetite enrichment and separation method fundamentally solves the problem of difficult recovery of titanium in titanium slag in a traditional blast furnace-converter method and reduction roasting-electric furnace method.

Description

technical field [0001] The invention belongs to the technical field of ore dressing, and in particular relates to a method for enriching and separating vanadium-titanium magnetite. Background technique [0002] Vanadium-titanium magnetite is an important mineral resource, and it is a raw material for iron smelting, vanadium extraction, production of important strategic metal titanium and manufacture of titanium dioxide. The world's known vanadium reserves are 160 million tons, 98% of which come from vanadium-titanium magnetite; the total amount of titanium resources is 2 billion tons, of which vanadium-titanium magnetite / ilmenite resources account for 92%. [0003] The traditional utilization method of vanadium-titanium magnetite industry is the "blast furnace-converter" process, only iron and vanadium are recovered, titanium enters blast furnace slag, and TiO in blast furnace slag 2 The content reaches 23~25%. The blast furnace method produces about 0.9 tons of blast furn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/244C22B1/02
CPCC22B1/02C22B1/2406C22B1/244Y02P10/20
Inventor 揭晓武张永禄阮书锋王振文崔成旺
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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