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Method for preparing titanium chloride slag from titanium concentrate

A titanium concentrate and titanium chloride technology, applied in the direction of titanium halide, etc., can solve the problems of small production scale, low grade, high cost, etc., and achieve the effect of easy operation, simple equipment, and improved grade

Pending Publication Date: 2022-02-25
武定国钛金属有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing titanium chloride slag from titanium concentrate, so as to solve the problems of small production scale, low grade, poor quality and high cost in existing titanium ore upgrading titanium chloride slag technology

Method used

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  • Method for preparing titanium chloride slag from titanium concentrate

Examples

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Embodiment 1

[0040] A Panzhihua titanium concentrate (TiO 246.83 wt%, TFe27.68 wt%, CaO 1.46 wt%, MgO3.5 wt%, SiO 2 3.39wt%) into a fluidized bed, oxidized and roasted at 680°C for 2 hours in an air atmosphere, ball milled for 10 minutes, and wet magnetic separation was carried out at a strength of 3000GS, and the obtained magnetic ore was added to starch for granulation (pelleting) ; then directly add the granulated sample and reducing agent coke into the smelting furnace, and after smelting at 1550°C for 8 hours, separate the slag and iron to obtain the slag; after crushing the slag, put it into the rotary kiln and oxidize it at 900°C for 1 hour in the air atmosphere , and then use coal as a reducing agent to reduce in a rotary kiln at 800°C for 1 hour to obtain modified slag; mix the modified slag with 21% hydrochloric acid at a liquid-solid ratio of 1:5, react at 120°C for 6 hours, and wash with water Dry, then calcined at 1000°C for 1h to obtain titanium chloride slag, the main comp...

Embodiment 2

[0042] A Panzhihua titanium concentrate (TiO 2 46.83wt%, TFe 27.68wt%, CaO 1.46wt%, MgO3.5wt%, SiO 2 3.39wt%) into a fluidized bed, oxidized at 750°C for 1 hour in an air atmosphere, ball milled for 15 minutes, and wet magnetic separation was carried out at a strength of 4000 GS, and the obtained magnetic ore was added to starch for granulation; The sample and the reducing agent coke are directly added to the smelting furnace, and after smelting at 1550°C for 6 hours, the slag and iron are separated to obtain slag; the slag is put into the rotary kiln and oxidized at 950°C for 1 hour in an air atmosphere, and then coal is used as the reducing agent. Reduction at 850°C for 1 hour in a rotary kiln to obtain modified slag; mix modified slag with 21% hydrochloric acid at a liquid-solid ratio of 1:8, react at 180°C for 2 hours, wash and dry, and then calcined at 1000°C 1h to get titanium chloride slag, its main composition TiO 2 91.93wt%, TFe0.32wt%, CaO0.18wt%, MgO0.94wt%, SiO...

Embodiment 3

[0044] A Panzhihua titanium concentrate (TiO 2 46.83 wt%, TFe27.68 wt%, CaO 1.46 wt%, MgO3.5 wt%, SiO 2 3.39wt%) into a fluidized bed, oxidized at 730°C for 1.5h under an air atmosphere, ball milled for 10min, and then wet magnetic separation was carried out at a strength of 3000GS, and the obtained magnetic ore was added to starch for granulation; Pellet samples and reducing agent coke are directly added to the smelting furnace, and after smelting at 1550°C for 9 hours, the slag and iron are separated to obtain slag; the slag is put into the rotary kiln and oxidized at 800°C for 1 hour in an air atmosphere, and then coal is used as the reducing agent , reduced at 750°C for 1 hour in a rotary kiln to obtain modified slag; mixed modified slag with 21% hydrochloric acid at a liquid-solid ratio of 1:6, reacted at 150°C for 2 hours, washed and dried, and then dried at 1000°C Calcined for 2 hours to obtain titanium chloride slag, the main composition of which is TiO 2 90.75wt%,...

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Abstract

The invention provides a method for preparing titanium chloride slag from titanium concentrate, and relates to the technical field of chemical metallurgy. The method mainly comprises the following steps: carrying out magnetizing roasting, ball milling, wet magnetic separation, granulation and smelting to obtain furnace slag, and sequentially carrying out oxidizing roasting, reducing roasting, pressure acid leaching and calcining on the furnace slag to obtain the titanium chloride slag. According to the method, magnetizing roasting, desilicication and decalcification and titanium chloride slag upgrading technologies are combined, and a low-calcium-magnesium and high-grade titanium chloride slag product suitable for large-scale fluidizing chlorination is prepared. According to the method, the content of impurities (especially calcium and magnesium) in the titanium chloride slag prepared from the titanium concentrate can be effectively reduced, the titanium chloride slag with the purity being 90% or above is prepared, and the impurity removal effect is good.

Description

technical field [0001] The invention relates to the technical field of chemical metallurgy, in particular to a method for preparing titanium chloride slag from titanium concentrate. Background technique [0002] The titanium industry focuses on the development of terminal products such as chloride-process titanium dioxide and high-end special titanium dioxide, accelerates the development of sponge titanium, metal titanium, titanium materials, etc., and actively develops aerospace, shipbuilding, medical and other military and civilian titanium alloy materials and deep-processed products. Compared with the sulfuric acid titanium dioxide process, the chloride titanium dioxide process produces no ferrous sulfate, reduces solid waste by 20-50%, and has higher product quality and stability, and is more widely used. Only by vigorously promoting the clean and environmentally friendly chloride titanium dioxide production process to replace the traditional sulfuric acid titanium dioxi...

Claims

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Application Information

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IPC IPC(8): C01G23/02
CPCC01G23/02
Inventor 陈建立李珍珍彭忠辉赵江伟陈树忠贺高峰高扬豆君闫广英王冬花
Owner 武定国钛金属有限公司
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