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Method for preparing primary titanium-rich material from high calcium-magnesium-titanium headings

A technology for titanium concentrates and titanium-rich materials, which is applied in the field of preparing primary titanium-rich materials from high permagnesium titanium concentrates, can solve problems such as difficult solutions, high technical difficulties, unreasonable economy, etc., and achieves fast heating speed and impurity acid. Good solubility and the effect of improving production efficiency

Inactive Publication Date: 2005-12-21
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

In 1980, Beijing General Research Institute of Nonferrous Metals and other units used Panzhihua ilmenite as raw material to test artificial rutile. This method used the thermodynamic difference of each component in ilmenite during the chlorination process to control the appropriate carbon content. Under the condition of 900℃~1000℃, the impurities are selectively chlorinated, while titanium is not chlorinated, and the chlorides are separated according to the physical and chemical characteristics to enrich TiO 2 The purpose of this method, the artificial rutile grade that this method makes is 83%, and calcium, magnesium content are higher, will further reduce impurity content, technical difficulty is larger, economically unreasonable, and a large amount of ferric chloride and Other by-products exist, and it is difficult to solve that calcium chloride and magnesium chloride are enriched and condensed at the bottom so that chlorination cannot be carried out; Liang Jingdong's "Flotation Theory and Smelting Practice" P377-394 (Metallurgical Industry Press, 1995.10), Disclosed a "new process for preparing acid-soluble titanium-rich material and high-quality iron powder - reduction grinding method"

Method used

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  • Method for preparing primary titanium-rich material from high calcium-magnesium-titanium headings

Examples

Experimental program
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Effect test

Embodiment 1

[0012] The composition of titanium concentrate in a certain area of ​​Panxi is TFe32.18%, TiO 2 48.84%, CaO1.56%, MgO5.56%, SiO 2 5.6%, grinding to a particle size of less than 0.074mm accounts for 60% by weight, adding 16% water, 5% binder sodium silicate, 10% coke, 2% additive sodium sulfate, 3% additive Iron powder and 3% additive potassium chloride are used to make composite pellets with a diameter of 10-15mm; the pellets are dried by microwave, the power of microwave drying is 750W, the drying temperature is 200°C, and the drying time is 12min. The content is less than 5% by weight; the microwave-dried pellets are placed in a microwave oven for reduction, and the extra coke accounts for 40% of the weight of the titanium concentrate; the reduction temperature of the pellets is 1150 ° C; the reduction time is 90 minutes; the reduced pellets Wet ball milling is carried out until the ore particle size is 0.074mm and the weight accounts for 70%. Iron powder and non-magnetic m...

Embodiment 2

[0014] The composition of titanium concentrate in a certain area of ​​Panxi is Tfe34.18%, TiO 2 46.42%, CaO2.28%, MgO5.86%, SiO 2 4.6%, grinding until the particle size is less than 0.074mm accounts for 80% by weight, adding 20% ​​water, 3% sodium silicate, 18% coke, 4% sodium sulfate, 1% iron powder, 5 % Potassium Chloride to make composite pellets with a diameter of 10-15mm; the pellets are microwave-dried, the microwave drying power is 1000W, the drying temperature is 300°C, and the drying time is 3min, and the microwave-dried pellets are placed in a microwave oven Reduction, adding coke accounts for 60% of the weight of the titanium concentrate, the reduction temperature of the pellets is 1120°C, and the reduction time is 120min. After reduction, the pellets are subjected to wet ball milling until the particle size is 0.074mm, accounting for 85% by weight. After magnetic separation Iron powder and non-magnetic matter are obtained by separation, and the non-magnetic matter...

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Abstract

The invention relates to a technique refining junior titanium-rich material with high calcium magnesium titanium fine ore. Crash titanium ore of purity 45.00 to 50.00 percent till particles of which the size is smaller than 0.074mm taking 60 to 80 percent weight, then add in with water 8 to 20 percent weight of the ore, adherent sodium silicate 3 to 5 percent, chark 10 to 20 percent, 1 to 5 percent addition sodium sulfate, 1 to 3 percent addition iron powder, 3 to 5 percent addition potassium chloride, making complex balls sized 10 to 15 mm, and acquire junior titanium-rich material after microwave drying, microwave heating and restoring, ore selecting and separating. As the titanium ore is highly wave absorptive, the heating speed is high, and the restore temperature is lowered by 80-120 deg.C, extraneous material calcium and magnesium are of good acid dissolvability which ensures the high purity of the junior titanium-rich material.

Description

[0001] (1) Technical field: metallurgical technical field (2) Background technology [0002] The known production methods for producing primary titanium-rich materials and iron powder from titanium concentrate mainly include electric furnace smelting, plasma smelting, selective chlorination and other thermal reduction methods, partial reduction-hydrochloric acid leaching and partial reduction-sulfuric acid leaching. (Generally referred to as acid leaching method), reduction rust method, full reduction-HCl leaching method and reduction grinding method, etc. In 1980, Beijing General Research Institute of Nonferrous Metals and other units used Panzhihua ilmenite as raw material to test artificial rutile. This method used the thermodynamic difference of each component in ilmenite during the chlorination process to control the appropriate carbon content. Under the condition of 900℃~1000℃, the impurities are selectively chlorinated, while titanium is not chlorinated, and the chlorid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/12
Inventor 彭金辉黄孟阳张世敏孙艳张利波汪云华范兴祥
Owner KUNMING UNIV OF SCI & TECH
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