Preparation method of artificial rutile

A technology of artificial rutile and acid-soluble titanium slag, which is applied to the removal of solid waste, titanium oxide/hydroxide, titanium dioxide, etc., can solve the problems of high investment cost, low quality of titanium-rich materials, and increase the difficulty of technical operation. Improved purity, improved efficiency, and easy leaching effects

Active Publication Date: 2015-08-26
YUNNAN MINZU UNIV
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Problems solved by technology

CN 100455683C discloses a method for producing titanium-rich material from electric furnace titanium slag. The method uses titanium slag from a certain place in Yunnan as raw material, and proposes an acid-base combined leaching method to

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  • Preparation method of artificial rutile
  • Preparation method of artificial rutile
  • Preparation method of artificial rutile

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0076] Example 1: Preparation of artificial rutile

[0077] The implementation steps of this embodiment are as follows:

[0078] A. Modification treatment

[0079] The acid-soluble titanium slag obtained from Panzhihua Iron and Steel Group Titanium Industry Co., Ltd. was analyzed by the method described in this manual. Its chemical composition is TiO by weight. 2 72.0%, SiO 2 9.5%, 1.5% MgO and 0.5% CaO; the particle size of the acid-soluble titanium slag is -100 mesh which is 80% by weight.

[0080] According to the weight ratio of acid-soluble titanium slag and modifier of 5:1.4, the acid-soluble titanium slag and sodium carbonate modifier were mixed uniformly, and then the microwave box reactor (HM Type) in the microwave reactor sold under the conditions of microwave reactor frequency of 912MHz and temperature of 780°C for 2.4 hours to obtain a modified acid-soluble titanium slag, which is tested by the method described in this manual. Chemical composition is Na 2 Fe 2 Ti 6 O 16...

Example Embodiment

[0085] Example 2: Preparation of artificial rutile

[0086] The implementation steps of this embodiment are as follows:

[0087] A. Modification treatment

[0088] The acid-soluble titanium slag obtained from Yunnan Xinli Nonferrous Metals Co., Ltd. was analyzed using the method described in this manual. Its chemical composition is TiO by weight. 2 72.5%, SiO 2 9.2%, MgO 1.2% and CaO 0.5%; the particle size of the acid-soluble titanium slag is -100 mesh, which is 80 86 82 84 84 83% by weight.

[0089] According to the weight ratio of acid-soluble titanium slag and modifier of 5:1.6, the acid-soluble titanium slag and sodium hydroxide modifier are mixed uniformly, and then the product is used in a microwave box reactor under the trade name of Kunming University of Science and Technology ( HM type) microwave reactor sold under the conditions of microwave reactor frequency of 915MHz and temperature of 800 ℃ modified treatment for 3.6 hours to obtain a modified acid-soluble titanium sla...

Example Embodiment

[0094] Example 3: Preparation of artificial rutile

[0095] The implementation steps of this embodiment are as follows:

[0096] A. Modification treatment

[0097] The acid-soluble titanium slag obtained by Yuntong Group Titanium Industry Co., Ltd. was analyzed by the method described in this manual. Its chemical composition is TiO by weight. 2 72.8%, SiO 2 9.0%, MgO 0.9% and CaO 0.2%; the particle size of the acid-soluble titanium slag is -100 mesh, which is 82% by weight.

[0098] According to the weight ratio of acid-soluble titanium slag and modifier of 5:1.0, mix the acid-soluble titanium slag with sodium carbonate, sodium hydroxide, phosphorus pentoxide, sodium phosphate or ammonium dihydrogen phosphate modifier uniformly , And then in a microwave reactor sold under the trade name microwave box reactor (HM type) by Kunming University of Science and Technology under the conditions of a microwave reactor frequency of 918MHz and a temperature of 750°C for 2.0h to obtain a Modifi...

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Abstract

The invention relates to a preparation method of artificial rutile. The method comprises steps of acid-soluble titanium slag modification treatment, acid impurity removal, calcination and the like. The artificial rutile prepared with the method completely meets the requirement for production of titanium white with a chlorination process, and raw materials have high adaptability. A microwave heating manner is selected, the required equipment investment is 17% lower than that of the prior art, the energy consumption is reduced by 25%, the purity of the artificial rutile is higher than 91%, byproducts are fewer, environmental pollution is low, and requirement of energy saving, emission reduction and clean metallurgy are met.

Description

【Technical field】 [0001] The invention belongs to the technical field of preparation of inorganic crystals. More specifically, the present invention relates to a method for preparing artificial rutile. 【Background technique】 [0002] Acid-soluble titanium slag and metallic iron can be obtained by smelting ilmenite in an electric furnace. The smelting process is mainly to remove iron, but the ability to remove non-ferrous impurities is poor, so the product quality is greatly affected by the raw materials. At present, the main production method of titanium slag is mainly to use ilmenite as raw material, and adopt the method of electric furnace smelting to make acid-soluble high-titanium slag or process it into high-titanium slag and artificial rutile after enrichment treatment. [0003] Titanium-rich materials prepared by traditional electric furnace smelting ilmenite generally contain TiO 2 60%-75% by weight, and the content of calcium and magnesium can reach 4%-7%. The p...

Claims

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Application Information

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IPC IPC(8): C01G23/047B09B3/00
CPCB09B3/00C01G23/047
Inventor 陈菓陈晋彭金辉张利波郭胜惠周俊文
Owner YUNNAN MINZU UNIV
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