Device for selecting aluminum from phosphorite

Abstract

A device for selecting aluminum from phosphorite comprises a crusher, a belt weigher, a grinding machine, a multi-stage cyclone, a mixing barrel and a first flotation tank which are sequentially connected, a discharging opening in the bottom of the first flotation tank is sequentially connected with a concentrate tank, a first thickener and a concentrate storage tank, and a discharging opening in the upper end of the first flotation tank is sequentially connected with a tailing tank, a second thickener, a filter and a storage yard sunlight room. And the mixing barrel is connected with the medicament adder. The device is used for solving the problems that low-grade phosphorite occupies a large amount of land resources, consumes a large amount of manpower and material resources and is easy to cause environmental pollution.

Description

Technical Field

[0001] The utility model relates to a device for selecting aluminum from phosphate ore. Background Art

[0002] There is a large amount of phosphate rock in my country, but the grade is not high and the impurity content is high. Impurities such as magnesium and aluminum have a great negative impact on subsequent processing and production. It is difficult to produce high-concentration phosphate fertilizer using low-grade phosphate rock with high impurities. High-grade phosphate rock is not only in small quantity, in short supply, and expensive, but also does not meet the requirements for the comprehensive use of phosphate rock. If a large amount of low-grade phosphate rock excavated is not used in production units, it will not only occupy a large amount of land resources and consume a lot of manpower and material resources, but also face the problem of being easily brought into the water environment by rainwater when stored, causing environmental pollution. It is particularly important to use it after processing it into a high-grade and low-impurity ore. At present, the main methods for aluminum selection from phosphate ore are chemical leaching, flotation, biological method, high-temperature metallurgy and combined method. Among them, the most widely used method is flotation, which is restricted by cost and recovery rate. It has the characteristics of simple operation, easy to realize intelligent control and low cost. Utility Model Content

[0003] The utility model aims to provide a device for selecting aluminum from phosphate ore, which is used to solve the problems that low-grade phosphate ore occupies a large amount of land resources, consumes a large amount of manpower and material resources, and easily causes environmental pollution.

[0004] In order to solve the above problems, the technical solution of the utility model is:

[0005] A device for selecting aluminum from phosphate ore comprises a crusher, a belt scale, a grinder, a multi-stage cyclone, a mixing barrel and a first flotation tank which are connected in sequence, wherein a bottom discharge port of the first flotation tank is connected in sequence to a concentrate tank, a first thickener and a concentrate storage tank, an upper discharge port of the first flotation tank is connected in sequence to a tailings tank, a second thickener, a filter and a stockpile sun room, and the mixing barrel is connected to a reagent additive.

[0006] An online pH sensor is arranged in the first flotation tank, the online pH sensor is connected to the input end of the controller, and the reagent additive is connected to the output end of the controller.

[0007] A plurality of aerators are arranged in the first flotation tank, and the aerators are connected to the air pump through the air inlet pipe.

[0008] A plurality of second flotation cells are sequentially connected between the first flotation cell and the tailings cell. The bottom discharge port of the first-stage second flotation cell is connected to the feed port of the first flotation cell, and the bottom discharge port of the tail-stage second flotation cell is connected to the feed port of the first-stage second flotation cell.

[0009] The invention also includes a suppressant injector, which is connected to the first flotation tank and the second flotation tank.

[0010] A liquid level sensor is arranged in the first flotation tank.

[0011] The beneficial effects of the utility model are as follows: the different hydrophilicities of aluminum-containing ore and phosphate ore are utilized to separate the aluminum-containing ore and the phosphate ore, thereby reducing the content of aluminum in the phosphate ore, improving the grade of the phosphate ore, and maximizing the utilization of resources. The utility model solves the problem that low-grade phosphate ore occupies a large amount of land resources, consumes a large amount of manpower and material resources, and easily causes environmental pollution. The utility model has the characteristics of simple operation, easy to realize intelligent control and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings:

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the connection relationship between various electrical components of the utility model.

[0015] In the figure: the first flotation tank 1, the crusher 2, the belt scale 3, the grinder 4, the multi-stage cyclone 5, the online pH sensor 6, the mixing barrel 7, the reagent adder 8, the tailings tank 9, the second thickener 10, the filter 11, the yard room 12, the second flotation tank 13, the inhibitor injector 14, the concentrate storage tank 15, the collector 16, the first thickener 17, the concentrate tank 18, the air pump 19, the aerator 20, and the liquid level sensor 21. DETAILED DESCRIPTION

[0016] A device for selecting aluminum from phosphate ore comprises a crusher 2, a belt scale 3, a grinder 4, a multi-stage cyclone 5, a mixing barrel 7 and a first flotation tank 1. The bottom slag discharge port of the multi-stage cyclone 5 is connected to the grinder 4 through a pipeline. A stirrer is provided in the first flotation tank 1 and the second flotation tank 13 described below. A collector 16 is provided above the first flotation tank 1 and the second flotation tank 13. The bottom discharge port of the first flotation tank 1 is connected to a concentrate tank 18, a first thickener 17 and a concentrate storage tank 15 in sequence. The upper collector discharge port of the first flotation tank 1 is connected to a tailings tank 9, a second thickener 10, a filter 11 and a yard house 12 in sequence. The mixing barrel 7 is connected to a reagent additive 8.

[0017] In this utility model:

[0018] The reagent adder 8 is used to add the acid inhibitor into the mixing barrel 7;

[0019] The multi-stage hydrocyclone 5 classification can grind the phosphate ore into smaller particles to a greater extent, thereby improving the flotation effect and providing guarantee for the subsequent flotation process;

[0020] The yard room 12 further reduces the moisture in the aluminum-containing tailings through natural air drying and sunlight to facilitate reuse.

[0021] An online pH sensor 6 is provided in the first flotation tank 1, and the online pH sensor 6 is connected to the controller input end, and the reagent additive 8 is connected to the controller output end. The controller is an on-site PLC controller, and the PLC controller is connected to the factory DCS system. The pH sensor 6 monitors the pH value of the slurry in the first flotation tank 1 in real time, controls the addition of the reagent additive 8 and acidic water, realizes intelligent addition, and reminds to reduce manual intervention.

[0022] It can be seen that the utility model utilizes the characteristics of the inhibitor effect of acidic wastewater, does not need to add new inhibitors, and the device can intelligently adjust the amount of inhibitor added according to the pH value.

[0023] A plurality of aerators 20 are provided in the first flotation tank 1, and the aerators 20 are connected to the air pump 19 through an air inlet pipe, so as to make the flotation foam richer.

[0024] A plurality of second flotation cells 13 are sequentially connected between the first flotation cell 1 and the tailings cell 9, the bottom discharge port of the first-stage second flotation cell 13 is connected to the feed port of the first flotation cell 1, and the bottom discharge port of the tail-stage second flotation cell 13 is connected to the feed port of the first-stage second flotation cell 13. The mineral particles floated out of the first flotation cell 1 are re-floated by the second flotation cell 13 twice, so that the mineral powder entering the tailings cell 9 has a higher purity.

[0025] It also includes an inhibitor injector, which is connected to the first flotation tank 1 and the second flotation tank 13. The spraying of the inhibitor can quickly break the flotation foam containing tailings, reducing the impact of the foam on the subsequent process.

[0026] A liquid level sensor 21 is provided in the first flotation tank 1. The liquid level sensor 21 is connected to the PLC controller, and the liquid level sensor 21 can monitor the liquid level of the slurry, which is more conducive to judging the condition of the flotation tank.

[0027] The filter 11 adopts a ceramic plate filter 11, which can reduce wear and erosion and increase the operating cycle.

[0028] The yard house 12 has a sun roof, which can be ventilated and utilize solar heat to improve the tailings drying effect and save energy.

[0029] The working process of the utility model is as follows: Figure 1As shown, the phosphate rock enters the crusher 2 and is crushed into small particles of mineral powder. After being measured by the belt scale 3, it enters the grinder 4 and is ground into finer mineral powder. Then, the powder is added with water and sent to the multi-stage cyclone for classification. The coarse mineral particles separated by the multi-stage cyclone are returned to the grinder 4, and the fine mineral particles enter the mixing barrel 7 and are fully mixed with the added flotation agent and acid inhibitor in the mixing barrel 7. Then, the mixed slurry is sent to the first flotation tank 1. Under the action of the aerator 20 and the stirring paddle, the aluminum-containing mineral particles are floated to the liquid surface by tiny bubbles. By adjusting the pH value to control the appropriate acidic environment, the best separation effect of aluminum-containing ore is guaranteed. Under the action of the collector, the high-aluminum phosphate ore is scraped out and enters the tailings tank 9. With the flushing of the inhibitor ejector 14, the foam layer is immediately broken. After dense sedimentation, the tailings enter the filter 11 to filter out most of the water and finally enter the yard for air drying. After dense sedimentation, the concentrate enters the concentrate storage tank 15.

[0030] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be deemed to be limited to the specific forms described in the embodiments. The protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art based on the concept of the utility model.

Claims

1. A device for separating aluminum from phosphate ore, characterized in that: The invention comprises a crusher (2), a belt scale (3), a grinder (4), a multi-stage cyclone (5), a mixing barrel (7) and a first flotation tank (1) which are connected in sequence. The bottom discharge port of the first flotation tank (1) is connected in sequence to a concentrate tank (18), a first thickener (17) and a concentrate storage tank (15). The upper discharge port of the first flotation tank (1) is connected in sequence to a tailing tank (9), a second thickener (10), a filter (11) and a yard house (12). The mixing barrel (7) is connected to a reagent additive (8). A plurality of aerators (20) are arranged in the first flotation tank (1). The aerators (20) are connected to an air pump (19) through an air inlet pipe.

2. The device for aluminum separation from phosphate ore according to claim 1, characterized in that: An online pH sensor (6) is provided in the first flotation tank (1); the online pH sensor (6) is connected to an input end of a controller, and the reagent adder (8) is connected to an output end of the controller.

3. The device for aluminum separation from phosphate ore according to claim 1 or 2, characterized in that: A plurality of second flotation cells (13) are sequentially connected between the first flotation cell (1) and the tailings cell (9); the bottom discharge port of the first-stage second flotation cell (13) is connected to the feed port of the first flotation cell (1), and the bottom discharge port of the tail-stage second flotation cell (13) is connected to the feed port of the first-stage second flotation cell (13).

4. The device for aluminum separation from phosphate ore according to claim 3, characterized in that: It also includes a suppressant injector, wherein the suppressant injector (14) is connected to the first flotation tank (1) and the second flotation tank (13).

5. The device for aluminum separation from phosphate ore according to claim 1 or 2, characterized in that: A liquid level sensor (21) is provided in the first flotation tank (1).

6. The device for separating aluminum from phosphate ore according to claim 1 or 2, characterized in that: The filter (11) is a ceramic plate filter (11).

7. The device for aluminum separation from phosphate ore according to claim 1 or 2, characterized in that: The yard house (12) has a sun roof.

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