A kind of mixed roughing method of extra-large flake graphite ore
A flake graphite, roughing technology, applied in the field of mineral processing, can solve the problems of low recovery rate of concentrate ore and high carbon content
Active Publication Date: 2022-07-12
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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[0007] The present invention proposes a mixed roughing method for extra-large flake graphite ore, which solves the problems of high fixed carbon content in tailings and low recovery rate of concentrate while fully protecting large flake graphite for extra-large flake graphite ore
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Embodiment 1
[0042] Using the mixed roughing method for extra-large flake graphite ore according to the present invention, the closed-circuit screening sieve size of the high-pressure roller mill is 2.5 mm, and the consumption of kerosene in the rapid flotation is 60 g / t, accounting for 40% of the total consumption of kerosene in the roughing section. ; The consumption of No. 2 oil is 40g / t, accounting for 44% of the total consumption of No. 2 oil in the roughing section. The amount of mixed roughing kerosene is 90g / t, accounting for 60% of the total amount of kerosene in the roughing section; the amount of No. 2 oil is 50g / t, accounting for 56% of the total amount of No. 2 oil in the roughing section. The selected concentrate enters the quality separation operation to obtain coarse-grained low-quality products and fine-grained high-quality products. Concentrate 2 is obtained after two stages of grinding and selection. See closed circuit process and dosage figure 2 , the sorting index i...
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The invention proposes a mixed roughing method for extra-large flake graphite ore, which includes the following steps: (1) the raw ore is closed-circuit pulverized by a high-pressure roller mill, and the pulverized product that reaches the required particle size enters rapid flotation; (2) rapid flotation tailings Carry out pre-screening operation to obtain coarse-grained products and fine-grained products, and the coarse-grained products are subjected to stirring and grinding before returning to the pre-screening operation; (3) The fine-grained products are combined with the rapid flotation concentrate for mixed roughing. operation, to obtain rougher concentrate and rougher tailings, rougher tailings enter the sweeping operation to obtain sweeping concentrate and sweeping tailings, rougher concentrate enters the beneficiation operation to obtain selected concentrate and selected tailings (4) The scavenging concentrate and the selected tailings are combined and enter the pre-screening operation; the selected concentrate enters the quality separation operation, and the swept and selected tailings are the final tailings. Aiming at extra-large flake graphite ore, the invention solves the problems of high content of fixed carbon in tailings and low recovery rate of concentrate while fully protecting large flake graphite.
Description
technical field [0001] The invention relates to the technical field of beneficiation, in particular to a mixed roughing method for extra-large flake graphite ore. Background technique [0002] Due to its excellent physical, chemical and mechanical properties, flake graphite has high utilization value and is widely used in metallurgy, chemical industry, machinery, electronics, medical treatment, nuclear industry and national defense and other fields. The natural flake graphite with 48 mesh and 80 mesh and above has high fixed carbon content, and it is easy to prepare multifunctional carbon materials with large expansion volume. This material has a well-developed network pore structure, high specific surface area and surface activity, and has the characteristics of heat resistance, radiation resistance, sealing and self-lubrication, corrosion resistance and anisotropy, and can be made into excellent electrical and thermal conductivity. , heat insulation, heat preservation and...
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IPC IPC(8): B03B9/00B03B1/00
CPCB03B9/00B03B1/00Y02P10/20
Inventor 刘磊郭理想张海啟张然
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD