CN201052478Y - Bauxite pole type short flow path separation equipment - Google Patents

Abstract

The utility model relates to a bauxite column-style short flow process separation equipment, which comprises an ore pulp agitating vessel, a flotation column and a liquid level control system which comprises an electric control valve, a pressure sensor and a PID instrument, the flotation column comprises a roughing separation flotation column and a cleaning flotation column, the entrance of the roughing separation flotation column is connected with the ore pulp agitating vessel, a foam groove outlet of the roughing separation flotation column is connected with a feed port of the cleaning flotation column by a conduit line, a buffer pool is equipped under the underflow port of the cleaning flotation column, and a middling pump and a communication pipe are equipped between the buffer pool and the ore pulp agitating vessel. The flotation feed materials are got by mixing paste and are fed into the roughing separation flotation column in a gravity flow way, the underflow of the roughing separation flotation column is taken as tailings product, the roughing foam is conveyed into a two-stage flotation column for classification by a conduit pipe in a way of gravity flow, the cleaning foam is taken as cleaning product, and cleaning tailings return to the ore pulp for system reselection. The device has compact and reasonable structure, small investment, low power consumption, small accommodation area, low operating cost and extensive practicability.

Description

Bauxite column type short process separation equipment

technical field

The utility model relates to column-type short-flow sorting equipment for bauxite, which is especially suitable for the column-type sorting of coarse and fine-tuned integrated bauxite, and can also be used for the sorting of other fine particle metal ore or non-metallic ore.

technical background

my country is rich in bauxite resources, but most of them belong to the diaspore type with high aluminum, high silicon, fine intercalated particle size, and easy muddying, and the aluminum-silicon ratio is moderately low, so only the sintering method with high cost or hybrid method. With the development of production, high-grade bauxite resources are decreasing day by day, and the production capacity and economic benefits of alumina plants are gradually affected. Since the "Ninth Five-Year Plan", my country has successively developed a process such as fine grinding positive flotation, graded flotation, stage grinding and stage separation, stage grinding-coarse and fine separation, etc. At the same time, various high-efficiency flotation agents have been developed to promote The development of bauxite beneficiation technology.

At present, there are two kinds of bauxite separation processes that have been industrially applied: classification-flotation and stage grinding-coarse and fine separation, but both processes are based on traditional flotation machine separation, and the process flow is long. The amount of investment is large. However, the flotation column technology that is more suitable for the separation of fine-grained materials has not been applied in the separation of bauxite, and the report on this aspect is still blank.

The flotation of the traditional flotation machine used for sorting bauxite generally adopts the operation process of one rough, one sweep, two fine and one fine sweep, so as to obtain qualified concentrate and tailings products, that is, the flotation feed after slurry adjustment passes through The rougher concentrate and tailings are obtained after the rougher flotation machine is sorted; the rougher concentrate is separated by the two-stage selection flotation machine to obtain the concentrate product, and the underflow of the first stage of selection enters the fine scavenging, and the fine scavenging The foam product and the bottom flow of the second-stage selection return to the first-stage selection and re-election, and the fine-sweeping and roughing tailings are combined as qualified tailings. The process is long, the equipment is large, the power consumption is large, the investment is large, and the amount of maintenance is large. High operating costs.

Utility model content

The purpose of this utility model is to provide a bauxite column-type short-flow sorting equipment with simplified equipment, less investment, less power consumption, less maintenance and lower operating costs based on the shortcomings of the existing technology.

The technical solution adopted by the utility model: it includes a pulp mixing tank, a flotation column, a liquid level control system composed of an electric regulating valve, a pressure sensor and a PID instrument. The flotation column is divided into a rougher flotation column and a finer In the flotation column, the inlet of the rougher flotation column is connected to the pulp mixing tank, and the outlet of the foam tank of the rougher flotation column is connected with the inlet of the selected flotation column by a pipeline; A buffer pool is provided, and a medium ore pump and a connecting pipe are provided between the buffer pool and the slurry mixing tank.

The column-type short-flow separation equipment of the utility model adopts the cyclone-static micro-bubble flotation column as the main separation equipment, and the roughing flotation column can directly separate the bauxite tailings products, and the roughing foam passes through the subsequent After the flotation column is selected, the concentrate product is directly obtained, and only two operations are required, one rough and one fine, which greatly improves the concentrate grade and recovery rate. Compared with the traditional flotation machine sorting equipment, the column-type short-process sorting equipment is simplified, compact and reasonable in structure, easy to maintain, low in investment, low in power consumption, small in floor space, low in operating costs, and has a wide range of practicability.

Description of drawings

Accompanying drawing is the system diagram of the sorting equipment of the utility model.

In the figure: slurry mixing tank 1, rougher flotation column 2, rougher flotation column bottom outlet 3, bubble generator 4, circulation pump 5, pipeline 6, selection flotation column 7, selection flotation column bottom flow Mouth 8, tailings pipe 9, buffer tank 10, middling pump 11.

Detailed ways

The utility model will be further described below in conjunction with the embodiment in the accompanying drawings:

As shown in the drawings, the bauxite column-type short-process separation equipment of the present utility model is mainly composed of a pulp mixing tank 1, a roughing flotation column 2, a selection flotation column 7 and a liquid level control system. The two flotation columns 2 and 7 are arranged and connected according to the height difference. The rougher flotation column 2 is larger than the selected flotation column 7, which is convenient for the foam product on the upper layer of the rougher flotation column 2 to flow to the selected flotation column 7. Inside. The entrance of the roughing flotation column 2 is connected to the slurry mixing tank 1, and the outlet of the foam tank is connected to the feed port of the selected flotation column 7 through the pipeline 6, and a buffer pool 10 is provided under the outlet 8 of the selected flotation column. , There is a communication pipe between the buffer pool 10 and the slurry mixing tank 1 .

Its working process: Feed the raw ore B and the flotation agent A together into the pulp mixing tank 1, and stir through the impeller in the pulp mixing tank 1. The stirring time is 10 to 15 minutes, and the mass percentage of the flotation feed material formed by stirring is The concentration is 30% to 35%. The flotation feed material flows from the pulp mixing tank 1 to the rougher flotation column 2, and is roughed under the action of the bubble generator 4 and the circulation pump 5, and the rougher tailings D are discharged from the bottom outlet 3 of the rougher flotation column , the tailings are qualified bauxite tailings products. The foam in the upper layer of the roughing flotation column 2 is transported by the pipeline 6 to the refining flotation column 7 for refining, and the concentrated tailings C are discharged from the outlet 8 at the bottom of the refining flotation column and flow into the middling buffer pool 10; the buffer pool 10 The selected tailings C will return the selected tailings to the slurry mixing tank 1 through the medium ore pump 11, and then separate the selected tailings after comprehensive mixing with the flotation feed; the upper foam of the selected flotation column 7 is the final refined Mineral product E, the concentrate is discharged through the concentrate pipe 9.

Claims (1)

1. Bauxite column-type short-process separation equipment, which includes a pulp mixing tank, a flotation column, a liquid level control system composed of an electric control valve, a pressure sensor and a PID instrument, characterized in that: the flotation column For the rougher flotation column (2) and the selected flotation column (7), the inlet of the rougher flotation column (2) is connected to the pulp mixing tank (1), and the outlet of the foam tank of the rougher flotation column (2) is formed by The pipeline (6) is connected with the feed inlet of the selected flotation column (7); a buffer pool (10) is provided under the bottom outlet (8) of the selected flotation column (7), and the buffer pool (10) is connected with the pulp A middling pump (11) and a connecting pipe are arranged between the mixing barrels (1).

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