Method for preparing titanium solution by wet-processing on vanadium-titanium magnetite concentrates

Abstract

The invention belongs to the wet-process metallurgical filed and in particular relates to a method for preparing titanium solution by wet-processing on vanadium-titanium magnetite concentrates. The method for preparing titanium solution by wet-processing on vanadium-titanium magnetite concentrates comprises the following steps of: (1), mixing the vanadium-titanium magnetite concentrate with hydrochloric acid, and leaching to obtain an intermediate sizing agent; (2), filtering the intermediate sizing agent to obtain leaching liquor and leaching residues; (3), carrying out water-washing on the leaching slag to obtain washing water and washing slag; (4), carrying out fused-salt reaction on the washing slag to obtain fused-salt reaction materials; (5), carrying out water-washing and filtering on the fused-salt reaction materials to obtain water-washing materials; (6), carrying out acid pickling on the water-washing materials to obtain sizing agent, and filtering to obtain the acid-pickled sizing agent; (7), carrying out acid dissolving on the acid-pickled materials by using a sulfuric acid solution to obtain acid-dissolved materials; and (8), adding the acid-dissolved materials to the sulfuric acid solution for extracting, and filtering to obtain extracting solution which is the titanium solution. According to the method for preparing titanium solution by wet-processing on vanadium-titanium magnetite concentrates disclosed by the invention, the titanium in the iron concentrate is sufficiently utilized, so that the titanium resource utilization rate is high and the recovery rate of the titanium in the titanium concrete is higher than 90%.

Description

technical field

[0001] The invention belongs to the field of hydrometallurgy. Specifically, the invention relates to a method for preparing liquid titanium by wet processing vanadium-titanium magnetite concentrate. Background technique

[0002] Vanadium-titanium magnetite is a compound ore in which iron, vanadium, titanium and other valuable elements coexist. It is the main source of vanadium and titanium products in my country, and is mainly distributed in Panxi, Chengde and Ma'anshan areas of China. However, the comprehensive utilization rate of vanadium and titanium resources in the traditional steel-oriented blast furnace smelting technology system is very low. For example, the comprehensive utilization rate of vanadium and titanium in Panzhihua Iron and Steel (calculated from raw ore to product) is only 39% and 14.5%. Resources become waste, serious waste of resources, and serious environmental pollution. In recent years, with the development of my country's economy, t...

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