Method for producing high-grade fluorite concentrate through multistage discharge flotation method

Abstract

The invention discloses a method for protruding high-grade fluorite concrete through a multistage discharge flotation method. One flotation machine with four or five grooves is used for conducting rough flotation work, three floatation machines respectively with three grooves are connected in series to conduct continuous fine floatation work of the first fine floatation, the second fine floatation and third fine floatation, a motor of the last groove of each floatation machine is decelerated, an eight-stage motor is used for replacing an original six-stage motor, an air inlet pipe of the last groove is closed, the stirring amount of the last groove is reduced, impurities are settled in the grooves, multistage discharge is achieved, the impurities of tailings are prevented from being sequentially returned, and therefore the fine floatation environment is prevented from being deteriorated. Decontamination and purification are continuously conducted in the fine floatation procedure, high-grade concentrate is obtained, the comprehensive recovery rate of the concentrate is more than 95 percent, and the grade is more than 97 percent. The scavenging procedure in the prior art is omitted in the method, the technology procedures are simple, operation is easy and convenient to conduct, and the method is suitable for be popularized in small and medium size beneficiation enterprises.

Description

technical field

[0001] The invention relates to a beneficiation technology of fluorite ore, more specifically to a method for producing high-grade fluorite concentrate from fluorite ore by using multistage tailing flotation. Background technique

[0002] Fluorite is also known as fluorspar, and its chemical composition is CaF2. It emits blue or purple fluorescence when it is irradiated by ultraviolet rays, cathode rays or heated, hence its name. Fluorspar is one of my country's strategic non-metallic ore resources and the leading raw material for the fluorine chemical industry. my country is located in the circum-Pacific metallogenic belt, and fluorite resources are very rich, accounting for 35% of the world's fluorite reserves, but the proportion of high-grade fluorite ore in my country is small, most of which are low-grade paragenetic ore, and the grade is generally 35% to 40%. , and with the continuous development of my country's mineral resources, single rich ore fluorit...