Tailing pre-discarding method for andalusite ore separation

Abstract

The invention provides a tailing pre-discarding method for andalusite ore separation. The tailing pre-discarding method comprises the following steps: 1) andalusite crude ores are crushed until the particle sizes are not more than 20 mm; 2) the crushed raw materials are burned in a high-temperature furnace at the burning temperature of 700-900 DEG for 10-20 minutes, and then the crushed materials are cooled to room temperature in a cooling bed; and 3) the cooled materials are subjected to dry process selective ore grinding, ore grinding products are subjected to dry process grading so as to remove tailing discarding materials, and the residual materials enters into the sequent ore separation work to carry out separation and purification. According to the invention, some gangue minerals are removed by tailing discarding before separation, so that water resources are saved, the sequent separation efficiency is improved, and the ore separation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of andalusite ore beneficiation, and in particular relates to a pre-tailing method for andalusite ore beneficiation. Background technique [0002] The gangue minerals in andalusite ore are mainly mica, quartz and carbonaceous aggregates. At present, the technological process adopted by the andalusite ore dressing plant is as follows: figure 1 As shown, the pre-tailing process generally uses strong magnetic separation to remove weak magnetic biotite. There are also literature reports on the use of jigging for coarse crystal andalusite (Process Mineralogy Research of Huolagou andalusite Mine in Xinjiang, Zhu Huijuan, Zhao Xinfen, Li Hongchao, etc., Mineral Protection and Utilization, Issue 5, 2002) or friction-sieving process (Henan Research on beneficiation process of andalusite ore in Xixia Province, Song Xiangyu, dissertation for Master of Engineering, 2007) to carry out experimental research on pre-throw...

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Problems solved by technology

There are also reports in the literature that jigging is used for coarse crystal andalusite (Research on process mineralogy of Huolagou andalusite mine in Xinjiang, Zhu Huijuan, Zhao Xinfen, Li Hongchao, etc., Mineral Protection and Utilization, 2002 No. 5) or friction-sieving process (Henan Research on beneficiation process of andalusite ore in Xixia Province, Song Xiangyu, dissertation for Master of Engineering, 2007) to carry out experimental research on pre-throwing tailings, but some of these methods have low efficiency, and some have large loss of fine-grained andalusite ore, Disadvantages such as it is not suitable for implementation in areas where water resources are scarce

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