Method for preparing chlorinated titanium-enriched materials by fine-particle Panxi titanium concentrates

Abstract

The invention discloses a method for preparing chlorinated titanium-enriched materials by fine-particle Panxi titanium concentrates. The method comprises the following steps: the fine-particle Panxi titanium concentrates are molded and pressed as balls after oxidation roasting and mixing and ball milling with carbon reducing agents, additives and binding agents, are heated under an Ar atmosphere after reduction, and are crushed, milled and magnetically separated to obtain magnetic products and nonmagnetic pulp; the nonmagnetic pulp is filtered and dried to obtain fine-particle titanium-enriched material semi-finished products; dilute hydrochloric acid is used for acid leaching; and the chlorinated titanium-enriched materials are obtained through fusion recrystallization, crushing and screening by the obtained fine-particle titanium-enriched materials. High-grade iron powder can be directly obtained after magnetic separation; the grade MFe of the iron powder is higher than 84%, so thatthe iron powder can be directly sold as products; the grade of titanium dioxide of the chlorinated titanium-enriched materials is higher than 90%; and through fusion recrystallization, the particle size remolding of the fine-particle titanium-enriched materials can be realized, the titanium-enriched materials of 60-140 meshes are more than 85%, and the particle size requirements of the chlorinatedtitanium-enriched materials can be met.

Description

technical field

[0001] The invention relates to the technical field of metallurgy, in particular to a method for preparing chlorinable titanium-rich material from fine-grained Panxi titanium concentrate. Background technique

[0002] Titanium-rich material generally refers to TiO 2 Titanium slag or artificial rutile with a content of not less than 75% is an important raw material for the production of high-grade rutile titanium dioxide and sponge titanium by the chlorination method. Artificial rutile or natural rutile and other titanium-rich materials react with chlorine gas to produce titanium tetrachloride, which is purified by rectification and then gas-phase oxidation; after rapid cooling, TiO is obtained through gas-solid separation. 2 . The chlorinable titanium-rich material used to prepare titanium tetrachloride should contain TiO 2 85%-95%, the impurity content should be as low as possible, and have a suitable particle size.

[0003] my country is a country rich ...

Examples

Embodiment 1

[0034] Such as figure 1 As shown, a method for preparing a chlorinable titanium-rich material from a fine-grained Panxi titanium concentrate comprises the following steps:

[0035] (1) Pre-oxidation of fine-grained Panxi titanium concentrate: the fine-grained Panxi titanium concentrate with a TiO2 content of 42% and a -200 mesh of 85% is used as a raw material, put into an atmosphere tube furnace, and heated in an air atmosphere. , oxidizing and roasting at 750°C for 30 minutes to obtain fine-grained titanium oxide concentrate;

[0036] (2) Configuration of carbon-containing pellets: the fine-grained titanium oxide concentrate obtained in step (1) is used as a raw material, and 2wt% Fe-Si powder and bituminous coal with a fixed carbon content of 50.14wt% are added as a reducing agent for batching Mixing, wherein the amount of carbon is formulated according to the C / O molar ratio of 1.3, and 100g of fine-grained Panxi titanium concentrate, 2g of Fe-Si powder and 19.1g of petrol...

Embodiment 2

[0045] A method for preparing chlorinable titanium-rich material from fine-grained Panxi titanium ore, comprising the steps of:

[0046] (1) Pre-oxidation of fine-grained Panxi titanium concentrate: TiO 2 The content is 50%, and the fine-grained Panxi titanium concentrate with a -200 mesh of 75% is used as a raw material, put into an atmosphere tube furnace, and oxidized and roasted at 950 ° C for 75 minutes in an air atmosphere to obtain a fine-grained titanium oxide concentrate mine;

[0047] (2) Configuration of carbon-containing pellets: the fine-grained titanium oxide concentrate obtained in step (1) is used as a raw material, and 0.5wt% Fe-Si powder and bituminous coal with a fixed carbon content of 54.14wt% are added as a reducing agent. The ingredients are mixed, and the amount of carbon is mixed according to the C / O molar ratio of 1.3. Weigh 100g of fine-grained Panxi titanium concentrate, 0.5g of Al powder and 20.4g of petroleum coke for mixing, and the mixing ingre...

Embodiment 3

[0056] A method for preparing chlorinable titanium-rich material from fine-grained Panxi titanium ore, comprising the steps of:

[0057] (1) Pre-oxidation of fine-grained Panxi titanium concentrate: TiO 2 The fine-grained Panxi titanium concentrate with a content of 45% and 80% of -200 mesh is used as a raw material, put into an atmosphere tube furnace, and oxidized and roasted at 850 ° C for 120 minutes in an air atmosphere to obtain a fine-grained titanium oxide concentrate mine;

[0058] (2) Configuration of carbon-containing pellets: the fine-grained titanium oxide concentrate obtained in step (1) is used as a raw material, and 1.25wt% Fe-Si powder and bituminous coal with a fixed carbon content of 55.23wt% are added as a reducing agent. The ingredients are mixed, wherein the amount of carbon is mixed according to the C / O molar ratio of 1.1, and 100g of fine-grained Panxi titanium concentrate, 1.25g of Al powder and 14.7g of bituminous coal are weighed for mixing, and the...

technical field

[0001] The invention relates to the technical field of metallurgy, in particular to a method for preparing chlorinable titanium-rich material from fine-grained Panxi titanium concentrate. Background technique

[0002] Titanium-rich material generally refers to TiO 2 Titanium slag or artificial rutile with a content of not less than 75% is an important raw material for the production of high-grade rutile titanium dioxide and sponge titanium by the chlorination method. Artificial rutile or natural rutile and other titanium-rich materials react with chlorine gas to produce titanium tetrachloride, which is purified by rectification and then gas-phase oxidation; after rapid cooling, TiO is obtained through gas-solid separation. 2 . The chlorinable titanium-rich material used to prepare titanium tetrachloride should contain TiO 2 85%-95%, the impurity content should be as low as possible, and have a suitable particle size.

[0003] my country is a country rich ...

Examples

Embodiment 1

[0034] Such as figure 1 As shown, a method for preparing a chlorinable titanium-rich material from a fine-grained Panxi titanium concentrate comprises the following steps:

[0035] (1) Pre-oxidation of fine-grained Panxi titanium concentrate: the fine-grained Panxi titanium concentrate with a TiO2 content of 42% and a -200 mesh of 85% is used as a raw material, put into an atmosphere tube furnace, and heated in an air atmosphere. , oxidizing and roasting at 750°C for 30 minutes to obtain fine-grained titanium oxide concentrate;

[0036] (2) Configuration of carbon-containing pellets: the fine-grained titanium oxide concentrate obtained in step (1) is used as a raw material, and 2wt% Fe-Si powder and bituminous coal with a fixed carbon content of 50.14wt% are added as a reducing agent for batching Mixing, wherein the amount of carbon is formulated according to the C / O molar ratio of 1.3, and 100g of fine-grained Panxi titanium concentrate, 2g of Fe-Si powder and 19.1g of petrol...

Embodiment 2

[0045] A method for preparing chlorinable titanium-rich material from fine-grained Panxi titanium ore, comprising the steps of:

[0046] (1) Pre-oxidation of fine-grained Panxi titanium concentrate: TiO 2 The content is 50%, and the fine-grained Panxi titanium concentrate with a -200 mesh of 75% is used as a raw material, put into an atmosphere tube furnace, and oxidized and roasted at 950 ° C for 75 minutes in an air atmosphere to obtain a fine-grained titanium oxide concentrate mine;

[0047] (2) Configuration of carbon-containing pellets: the fine-grained titanium oxide concentrate obtained in step (1) is used as a raw material, and 0.5wt% Fe-Si powder and bituminous coal with a fixed carbon content of 54.14wt% are added as a reducing agent. The ingredients are mixed, and the amount of carbon is mixed according to the C / O molar ratio of 1.3. Weigh 100g of fine-grained Panxi titanium concentrate, 0.5g of Al powder and 20.4g of petroleum coke for mixing, and the mixing ingre...

Embodiment 3

[0056] A method for preparing chlorinable titanium-rich material from fine-grained Panxi titanium ore, comprising the steps of:

[0057] (1) Pre-oxidation of fine-grained Panxi titanium concentrate: TiO 2 The fine-grained Panxi titanium concentrate with a content of 45% and 80% of -200 mesh is used as a raw material, put into an atmosphere tube furnace, and oxidized and roasted at 850 ° C for 120 minutes in an air atmosphere to obtain a fine-grained titanium oxide concentrate mine;

[0058] (2) Configuration of carbon-containing pellets: the fine-grained titanium oxide concentrate obtained in step (1) is used as a raw material, and 1.25wt% Fe-Si powder and bituminous coal with a fixed carbon content of 55.23wt% are added as a reducing agent. The ingredients are mixed, wherein the amount of carbon is mixed according to the C / O molar ratio of 1.1, and 100g of fine-grained Panxi titanium concentrate, 1.25g of Al powder and 14.7g of bituminous coal are weighed for mixing, and the...

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