Regrinding and reconcentration method for recycling fluorite from tailings

Abstract

The invention provides a regrinding and reconcentration method for recycling fluorite from tailings. The regrinding and reconcentration method includes the following steps that firstly, the tailings containing the fluorite are collected, wherein the particle size of the tailings is smaller than or equal to 0.5 mm, and the grade of the fluorite in the tailings reaches 14% or above; secondly, the tailings are conveyed into an Aisha mill, nanometer ceramic balls are contained in the Aisha mill, ore grinding is conducted, the diameter size and ratio of the nanometer ceramic balls are selected, theore grinding concentration is arranged to be 60%, the ore grinding fineness is controlled to the degree that -200 mesh accounts for 80% or above; thirdly, a product obtained after ore grinding is directly fed into a stirring barrel without conducting desliming work, sodium carbonate used for size mixing, tannic acid or water glass used as an inhibitor and oleic acid used as a collecting agent aresequentially added and sufficiently and evenly mixed with ore pulp; and fourthly, the ore pulp which is evenly mixed is fed in a one-time roughing, six-time concentration and one-time scavenging flotation technological process, and a fluorite concentrate product with the fluorite grade being 87% or above is obtained.

Description

technical field [0001] The invention belongs to the field of reutilization of mineral resources, and specifically aims at tailings containing fluorite or associated fluorite tailings, and provides a regrinding and reselection process for recovering fluorite from tailings. Background technique [0002] Judging from the particle size distribution and grade distribution of fluorite in most single fluorite tailing pools, the content of -200 mesh in the tailings is high, and the distribution rate of fluorite metal content is high and the grade of fluorite is high. The main reason is that the uniformity of grinding at that time was not enough; the second is that the degree of dissociation during grinding was not enough. Therefore, the key to further recovering fluorite from the tailings pond is to choose a suitable regrinding process, so that the particle size distribution of the tailings is uniform during regrinding, and it is very important to avoid secondary fine mud caused by ...

AI Technical Summary

Problems solved by technology

[0003] In the recovery of fluorite from associated fluorite tailings, in addition to the fine particle size of the tailings (up to 95% of -200 mesh), the dosage is also very complicated. The surface of fluorite ore is covered by chemicals very seriously, and it is generally difficult to recover effectively.

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