Artificial bed stone and gravity separation method for complex ores

Abstract

The invention relates to an artificial bed stone and a gravity separation method for complex ores. The method comprises the following steps: adding a selected ferric oxide material or an iron mixed material into adhesive and coal, mechanically molding the mixture to form circular balls, then burning the circular balls at the high temperature of between 1,150 and 1,500 DEG C in a common smelting furnace to make the circular balls in a molten state, pouring the molten circular balls into a spherical die, and cooling the circular balls to obtain the artificial bed stone with good abrasion resistance and breakage resistance and high hardness. The artificial bed stone is manufactured into the bed stone for a spherical jigging machine with specific gravity and specification and is applied to all jigging machines according to different proportion combinations of various specification so as to overcome the defects of conventional bed stones; the enrichment ratio of ore concentrate is high (2.5 times), the grade of tailings is low (the tin content of the tailings is less than 0.1 percent), the abandon rate is high (more than or equal to 30 percent), the separation efficiency is high (more than or equal to 92 percent), and each equipment has a handling capacity of 5 to 8 tons of ores per hour; and the artificial bed stone is an ideal separation medium for the jigging machine and can greatly improve the economic indicator of ore dressing technology and the economic benefit of all flows.

Description

technical field [0001] The invention relates to a bed stone required for a mineral processing method, in particular to a method for beneficiating complex ores with multiple metals and multiple mineral species by man-made bed stones. Background technique [0002] Jig machine is one of the common re-selection equipment used for roughing, with various types and specifications, large processing capacity (5-8 tons / unit. hour), wide range of sorting particle size (0.074-4.0mm), Small footprint, high productivity, easy operation and maintenance, etc., the main models are ladder jig, rectangular jig, garden jig, re-vibration jig, sawtooth jig, etc. It is one of the effective equipment for two or more minerals with large difference in specific gravity. It has a wide range of uses. It is often used in the pre-enrichment and separation of non-ferrous metals, coal mines, chemicals, rare and precious metals, etc. The structure of the existing jig machine is shown in the appendix of the m...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to deal with complex sulfide ores of low grade, multi-metal elements and multi-mineral types when the jig machine is dealing with large fluctuations in the enrichment ratio of the concentrate, large changes in the content of valuable metals in the concentrate, and tailings. Large changes in mineral production rate lead to difficulties in follow-up operations and low technical indicators of the whole process of beneficiation. While studying various technical parameters of the jig machine, the unfavorable factors of the conventional bed stone of the jig machine are studied, and the prepared Artificial bed stones are used to replace conventional bed stones, and in industrial applications, expected results have been achieved

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