CN101703961A - Novel process of molybdenum ore dressing flow - Google Patents

Abstract

The invention belongs to the technical field of ore metallurgy, mainly providing a novel process of molybdenum ore dressing flow as follows: ore crushing, ore grinding, classification of swirler, reclassification of linear vibrating screen, roughing and selecting. The invention completely solves the problem of fineness of the ore pulp entering the flotation process through the reclassification of the linear vibration screen, thus ensuring that the proportion of the fineness of the ore pulp less than 0.074mm reaches over 68%, effectively improving the flotation effect of the ore pulp, improving ore dressing recovery rate and concentrate grade, wherein the ore dressing recovery rate can reach over 87% and the concentrate grade can reach over 48%.

Description

Novel process of molybdenum ore dressing flow

Technical field

The invention belongs to the ore metallurgical technology field, mainly propose a kind of novel process of molybdenum ore dressing flow.

Background technology

Floating separation is the main mode that current molybdenum ore sorts; Existing beneficiation flowsheet is: muck, and---ore grinding------roughly select---selected by cyclone classification; In this beneficiation flowsheet, because cyclone is subjected to the influence to ore deposit pressure, mine-supplying quantity fluctuation, the grading effect instability, often seedy level ore pulp enters flotation flowsheet and the molybdenum ore flotation flowsheet requires slurry fineness less than will the reaching more than 65% of 0.074mm, otherwise can have a strong impact on recovery rate in ore-dressing and concentrate grade.Adopt existing beneficiation flowsheet technology, obtain slurry fineness less than 0.074mm on average have only 53%, can not satisfy the requirement of molybdenum ore flotation flowsheet, cause recovery rate in ore-dressing and concentrate grade on the low side thus, recovery rate in ore-dressing can only reach 78%, and concentrate grade has only about 40%.How to solve this difficult problem, ore resource being reclaimed fully and utilize is the task that current urgent need solves in this area.

Summary of the invention

For solving the problems of the technologies described above, the objective of the invention is to propose a kind of novel process of molybdenum ore dressing flow, make it can effectively improve flotation conditions, improve recovery rate in ore-dressing and concentrate grade.

A kind of novel process of molybdenum ore dressing flow, its step is as follows:

(1), muck;

(2), ore grinding, deliver to grinding in ball grinder through the ore behind the muck;

(3), classification, give cyclone classification with the ore pulp behind ball mill grinding, sand return is partly returned ball mill and is regrinded after the classification;

(4), classification again, will give DC vibrating sieve through the ore pulp behind the cyclone classification and carry out classification again, after the classification, sieve top enters ball mill and regrinds;

(5), flotation, flotation is divided into roughly selects and thin choosing, will be distributed into the section of roughly selecting through the lower part of screen behind the DC vibrating sieve classification earlier, remove mine tailing after, rough concentrate is sent into selected section again, obtain concentrate, for the precision that guarantees concentrate can be carried out repeatedly rough concentrate selected.

A kind of novel process of molybdenum ore dressing flow that the present invention proposes, thoroughly solved the fineness problem of the ore pulp that enters flotation flowsheet by the classification again of linear vibrating screen, slurry fineness is reached more than 68% less than the ratio of 0.074mm, improved the flotation effect of ore pulp effectively, recovery rate in ore-dressing and concentrate grade have been improved, recovery rate in ore-dressing reaches more than 87%, and concentrate grade reaches more than 48%.

Description of drawings

Fig. 1 is original molybdenum mineral processing circuit figure.

Fig. 2 is a process chart of the present invention.

The specific embodiment

With specific embodiment the present invention is illustrated in conjunction with the accompanying drawings:

As shown in Figure 1 and Figure 2, a kind of novel process of molybdenum ore dressing flow, its step is as follows:

(1), muck;

(2), ore grinding, deliver to grinding in ball grinder through the ore behind the muck;

(3), classification, give cyclone classification with the ore pulp behind ball mill grinding, sand return is partly returned ball mill and is regrinded after the classification;

(4), classification again, will give DC vibrating sieve through the ore pulp behind the cyclone classification and carry out classification again, after the classification, sieve top enters ball mill and regrinds;

(5), flotation, flotation is divided into roughly selects and thin choosing, will be distributed into the section of roughly selecting through the lower part of screen behind the DC vibrating sieve classification earlier, remove mine tailing after, rough concentrate is sent into selected section again, obtain concentrate, for the precision that guarantees concentrate can be carried out repeatedly rough concentrate selected.

Claims (1)

1. novel process of molybdenum ore dressing flow, its step is as follows:

(1), muck;

(2), ore grinding, deliver to grinding in ball grinder through the ore behind the muck;

(3), classification, give cyclone classification with the ore pulp behind ball mill grinding, sand return is partly returned ball mill and is regrinded after the classification;

(4), classification again, will give DC vibrating sieve through the ore pulp behind the cyclone classification and carry out classification again, after the classification, sieve top enters ball mill and regrinds;

(5), flotation, flotation is divided into roughly selects and thin choosing, will be distributed into the section of roughly selecting through the lower part of screen behind the DC vibrating sieve classification earlier, remove mine tailing after, rough concentrate is sent into selected section again, obtain concentrate, for the precision that guarantees concentrate can be carried out repeatedly rough concentrate selected.

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