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A kind of production method of titanium concentrate pellet

A production method and technology of titanium concentrate, applied in the production field of titanium concentrate pellets, can solve problems such as the influence of electric furnace lining and grade influence, and achieve the effects of reducing titanium S content, reducing consumption, and stabilizing reaction speed

Active Publication Date: 2018-05-08
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the production of titanium concentrate pellets by acidic oxidation pellets, the main problem is that the proportion of bentonite agent is 1.5-3.0%, and the titanium slag TiO 2 The grade has an influence. If water glass is used as the binder, Na ions will have a greater impact on the lining of the electric furnace.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The weight percentage of raw materials is: 80% titanium concentrate, 20% iron oxide, 1.5% bentonite externally, control the water content of green pellets to 9%, pelletize in a disc pelletizer, pelletize for 5 minutes, and test the compression resistance of green pellets The strength is 1.8N / piece, the drop strength is 3.3 times / piece, and the ball forming rate is 82.5%.

[0045] Put the raw balls into a drying oven to dry at a drying temperature of 200°C and a drying time of 2 hours, then transfer them to a muffle furnace for preheating and roasting, and cool the roasted cooked balls for a cooling time of 5 hours. Compressive strength and chemical composition, the result is: the compressive strength is 1350N / piece, TFe42.95, TiO 2 37.83%, SiO 2 3.33%, CaO 0.97%, S0.012%, desulfurization rate reaches 99.45%, TiO 2 The proportion in the amount of slag is 58.76%.

[0046] Compared with the basic example, the TFe content in the pellets in the embodiment increases due ...

Embodiment 2

[0048] The weight percentage of raw materials is: titanium concentrate%, 25% iron oxide, 1.5% bentonite externally, control the water content of green pellets to 9%, pelletize in a disc pelletizer, pelletize for 5 minutes, and test the compressive strength of green pellets It is 2.1N / piece, the drop strength is 3.7 times / piece, and the ball forming rate is 84.7%.

[0049] Put the raw balls into a drying oven to dry at a drying temperature of 200°C and a drying time of 2 hours, then transfer them to a muffle furnace for preheating and roasting, and cool the roasted cooked balls for a cooling time of 5 hours. Compressive strength and chemical composition, the results are: compressive strength 1430N / piece, TFe 44.58%, TiO 2 35.46%, SiO 2 3.18%, CaO 0.92%, S0.012%, desulfurization rate reaches 99.49%, TiO 2 The proportion in the amount of slag is 58.76%.

Embodiment 3

[0051] The weight percentage of raw materials is: 70% titanium concentrate, 30% iron oxide, 1.5% bentonite externally, control the water content of green pellets to 9%, pelletize in a disc pelletizer, pelletize for 5 minutes, and test the compression resistance of green pellets The strength is 2.6N / piece, the drop strength is 4.1 times / piece, and the ball forming rate is 87.3%.

[0052] Put the raw balls into a drying oven to dry at a drying temperature of 200°C and a drying time of 2 hours, then transfer them to a muffle furnace for preheating and roasting, and cool the roasted cooked balls for a cooling time of 5 hours. Compressive strength and chemical composition, the results are: compressive strength 1500N / piece, TFe 46.20%, TiO 2 33.10%, SiO 2 3.03%, CaO 0.87%, S0.011%, desulfurization rate reaches 99.52%, TiO 2 The proportion in the amount of slag is 58.76%.

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Abstract

The invention relates to a production method of a titanium concentrate pellet, and belongs to the field of steel and iron metallurgy. The technical problem to be solved by the invention is to provide a new production method of the titanium concentrate pellet, so that the titanium concentrate pellet is oxidized and solidified; and cooked spheres with high strength, low sulfur content and uniform particle size are produced. The method comprises the steps of: (A) burdening: 60-80 wt% of titanium concentrate and 20-40 wt% of iron oxide are weighed in percentage by weight; and 1.0-1.5 wt% of bentonite is externally mixed; (B) pelletizing; (C) drying: raw spheres are dried; (D) preheating and roasting; and (E) cooling: the titanium concentrate pellet is obtained through natural cooling. The method mainly uses the intergranular consolidation mechanism of the iron oxide in high-temperature roasting; meanwhile, the additive causes no influence on the grade of titanium slag; the coked pellet with uniform particle size can be obtained; the reaction speed in an electric furnace is stabilized during smelting of the electric furnace; the consumption of high-grade energy is reduced; and meanwhile, the pellet has the desulfurization effect during roasting, so that a brand new method is provided for production of the titanium concentrate pellet.

Description

technical field [0001] The invention relates to a production method of titanium concentrate pellets, belonging to the field of iron and steel metallurgy. Background technique [0002] When the inventor’s employer, Panzhihua Iron & Steel, used an electric furnace to produce high-titanium slag, due to the fine particle size of the titanium concentrate, the reaction speed was difficult to control, so it was necessary to pelletize the titanium concentrate to make titanium concentrate pellets, in order to facilitate the stable production of the electric furnace . When making pellets, it is necessary to consider the small amount of slag produced, so as not to reduce the TiO of titanium slag 2 grade. [0003] The pelletizing method currently used by the inventor is to mix titanium concentrate, carbonaceous reducing agent, and organic binder, press into pellets, and obtain pellets after drying. Among them, the binder accounts for 2%-4% of the titanium concentrate, the carbonaceou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/243
CPCC22B1/2406C22B1/243
Inventor 饶家庭胡鹏王禹键李占军
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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