Titanium concentrate and vanadium-iron concentrate bulk concentrate acidic oxidized pellet and preparing method thereof

A technology of mixing concentrates and oxidizing pellets, applied in the field of metallurgy, can solve problems such as incomplete supporting industries, low thermal efficiency and titanium recovery rate, and difficult recycling, achieving considerable application prospects and improved metallurgical performance

Active Publication Date: 2018-08-03
PANZHIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the incomplete industrial chain and incomplete supporting industries, green alum accumulates everywhere, pollutes the environment, occupies land, and is difficult to recycle.
At the same time, due to the very small particle size of the titanium concentrate, it is difficult to feed the titanium slag during smelting, the gas permeability of the material layer in the furnace is poor, and the thermal efficiency and titanium recovery rate are low.

Method used

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  • Titanium concentrate and vanadium-iron concentrate bulk concentrate acidic oxidized pellet and preparing method thereof

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preparation example Construction

[0023] Specifically, a method for preparing acidic oxidation pellets of titanium concentrate and ferrovanadium concentrate mixed concentrate, the method comprises the following steps:

[0024] A. Mix titanium concentrate, ferrovanadium concentrate, water and organic binder evenly to obtain a mixture;

[0025] B. The mixture obtained in step A is pelletized to obtain wet pellets, and after the wet pellets are dried, dry pellets are obtained;

[0026] C. The dried pellets obtained in step B are oxidized and roasted, and cooled to obtain acidic oxidation pellets of titanium concentrate and ferrovanadium concentrate mixed concentrate.

[0027] The method of the present invention simultaneously utilizes the fine-grained titanium concentrate and vanadium-iron concentrate produced in the Panxi area, adjusts the ratio of the two to make acidic oxidation pellets with good metallurgical properties, and recycles the iron in them at the same time. , titanium and vanadium resources; titan...

Embodiment 1

[0039]Weigh 6.0 kg of titanium concentrate (accounting for 80.0%) according to the mass ratio of raw materials, of which -200 mesh accounts for 75.5% in its particle size composition, 1.5 kg of ferrovanadium concentrate (accounting for 20.0%), of which -200 mesh accounts for 82.3% of its particle size composition , add 220 grams of PVA (accounting for 2.9% of the total mass of titanium concentrate and vanadium concentrate), add 750g water (accounting for 10% of the total mass of titanium concentrate and vanadium concentrate), mix 15 minutes, get mixing material; use a disc pelletizer to pelletize the mixture to obtain wet pellets with a diameter of 9 to 23 mm. The pelleting rate of the wet pellets is measured to be 87.5%, and the water content is 15.5%. Random sampling of 20 wet pellets The average compressive strength of the pellets was measured to be 3.2N / ball, and the 0.5m high drop strength was 36 times / ball; the wet pellets were dried in a drying oven at a drying temperatu...

Embodiment 2

[0041] Weigh 6.0 kg of titanium concentrate (accounting for 66.7%) according to the mass ratio of raw materials, of which -200 mesh accounts for 82.5% of its particle size composition, 3.0 kg of ferrovanadium concentrate (accounting for 33.3%), of which -200 mesh accounts for 90.2% of its particle size composition , add 130 grams of PVA (accounting for 1.4% of the total mass of titanium concentrate and vanadium concentrate), add 1080g water (accounting for 12% of the total mass of titanium concentrate and vanadium concentrate), mix 12 minutes, get Mixed material; use a disc pelletizer to pellet the mixed material to obtain wet pellets with a diameter of 9 to 25 mm. The measured pelleting rate of the wet pellets is 93.8%, and the water content is 17.1%. Randomly sample 20 The average compressive strength of the wet pellets is 3.8N / ball, and the 0.5m high drop strength is 49 times / ball; the wet pellets are dried in a drying oven at a drying temperature of 150°C and a drying time ...

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Abstract

The invention discloses a titanium concentrate and vanadium-iron concentrate bulk concentrate acidic oxidized pellet and a preparing method thereof, and belongs to the field of metallurgy. The preparing method of the titanium concentrate and vanadium-iron concentrate bulk concentrate acidic oxidized pellet comprises following steps of uniform mixing of titanium concentrate, vanadium-iron concentrate and an organic binding agent, pelletizing, drying, oxidizing roasting, cooling, and obtaining the titanium concentrate and vanadium-iron concentrate bulk concentrate acidic oxidized pellet. The micro-size fraction titanium concentrate and the micro-size fraction vanadium-iron concentrate are used at the same time, the organic binding agent is arranged and used for pelletizing, under the high-temperature oxidizing atmosphere, roasting is carried out to prepare the acidic oxidized pellet, through control over the material proportion, pelletizing,, drying and roasting, the desulfurization degree reaches 95% or above, the pressure resisting strength of the titanium concentrate and vanadium-iron concentrate bulk concentrate acidic oxidized pellet is 1800N/pellet, and the S is smaller than 0.015%, and the application prospect is quite considerable.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a method for preparing acidic oxidation pellets of titanium concentrate and ferrovanadium concentrate mixed concentrate. Background technique [0002] The main elements of vanadium-titanium magnetite in Panxi area are iron, vanadium and titanium, and its resources are extremely rich. The total reserves account for 1 / 4 of the world's total reserves of vanadium-titanium magnetite, accounting for 95% of the national reserves. Each accounts for 35.17% and 7.3% of the world's total, and has great comprehensive utilization value. Two kinds of products, ferrovanadium concentrate and titanium concentrate, can be obtained through ore dressing. More than 90% of the ferrovanadium concentrate is used to prepare sinter and pellets, to produce vanadium-containing molten iron in blast furnace smelting, and to produce high-titanium blast furnace slag with a titanium dioxide content of 21% t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/244C22B1/02C22B34/12C22B34/22
CPCC22B1/02C22B1/2406C22B1/244C22B34/1209C22B34/22
Inventor 杨绍利廖鑫马兰李俊翰
Owner PANZHIHUA UNIV
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