Mineral processing method of protective scales for fine-grained crystalline graphite ore

Abstract

The beneficiation method of protecting scales for fine-grained crystalline graphite ore is firstly to coarsely grind the raw ore, and then perform four times of rapid flotation successively, and then carry out roughing and sweeping after the obtained rapid flotation tailings are rod-milled, and the obtained rapid flotation and Roughly selected rough concentrates are merged into the pre-selection stage, followed by two-stage concentration and rod milling, and then separated by a 100-mesh sieve; the obtained coarse concentrate products on the sieve enter the coarse-grained concentration stage, in this stage, Concentration and rod milling are carried out first, followed by three-stage selection, and finally separated by 50-mesh and 100-mesh sieves respectively. The products on the 50-mesh and 100-mesh sieves are the concentrate products, and the products under the 100-mesh sieve enter the fine-grained beneficiation stage; Finally, the under-screen coarse ore concentrate obtained from the 100-mesh sieve in the beneficiation budget stage enters the fine-grain beneficiation stage, and five-stage rod milling and five-stage beneficiation are carried out alternately to obtain a ‑100-mesh concentrate product.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a mineral processing method of protective scales for fine-grained crystalline graphite ore. Background technique [0002] Industrially, graphite ore is divided into two categories: crystalline (flaky) graphite ore and aphanitic (soily) graphite ore. Crystalline graphite ore can be divided into two types: scaly and dense. Graphite ore in China is mainly of scaly crystal type, followed by aphanitic crystal type. Dense crystalline graphite is only found in individual deposits such as Tokebula in Xinjiang, and has little industrial value. [0003] Crystalline (flaky) graphite: The crystallization of the ore is better, and the crystal particle size is greater than 1 μm, generally 0.05-1.5mm, and the large one can reach 5-10mm, mostly in the form of aggregates. Crystalline (flaky) graphite is widely used, and the larger the scale, the higher the economic value....

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Problems solved by technology

[0010] The object of the present invention is to provide a kind of beneficiation method of the protection scale that fine-grained crystalline graphite ore is used, for the fine-grained crystalline graphite ore with complicated state of occurrence, difficult monomer dissociation, still can obtain a part+100 order ( More than 100 mesh) graphite concentrate, overcome the disadvantage that the conventional multi-stage grinding and multi-stage selection flotation method is difficult to obtain +100 graphite concentrate products, at the same time, it is beneficial to protect graphite flakes, and can also be used for large scale crystalline graphite ore

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