CN103846165A - Beneficiation reagent adding method and device - Google Patents

Abstract

The invention provides a beneficiation reagent adding method and device. According to the beneficiation reagent adding device, a liquid level meter which is arranged on a reagent buffering box and an adjusting valve which is arranged on a pipeline form into a control closed circuit to guarantee constant liquid level in the reagent buffering box and the adding amount of the beneficiation reagent is controlled, stable addition of the beneficiation reagent is guaranteed, and production is continuously and stably operated due to adjustment of the number of opening and closing times of magnetic valves which are arranged on the pipeline under the premise that the reagent buffering box liquid level is constant. The beneficiation reagent adding device has the advantages of being low in cost, accurate in metering, simple in maintenance and the like.

Description

A method and device for adding ore dressing agent

technical field

The invention relates to a medicament adding method, which belongs to the technical field of mineral processing.

Background technique

Mineral beneficiation is a technology that achieves the difference in hydrophilicity between useful minerals and impurity minerals by adding beneficiation agents, thereby further realizing solid-liquid separation. Whether beneficiation can achieve sufficient separation of useful minerals and impurity minerals depends not only on the grinding particle size of the ore, flotation temperature, type of reagent, etc., but also depends on the amount of reagent added. Whether the beneficiation agent can be added stably and quantitatively for a long time is an important factor affecting the beneficiation index. In the mineral processing production process, it is necessary to use a wide variety of mineral processing agents, including collectors, regulators, foaming agents, activators, inhibitors and so on.

Concentrators usually use screw pumps or metering pumps to add beneficiation agents. In the actual production process, the operator adjusts the speed of the screw pump or metering pump according to the amount of different chemicals added to control the amount of beneficiation chemicals added. The beneficiation agent scheme for any kind of mineral is a combination of various agents, which involves a variety of beneficiation agents. Therefore, the above-mentioned chemical addition method needs to set up multiple screw pumps or metering pumps to transport different types of beneficiation chemicals. This method not only wastes a lot of electricity, but also requires high equipment investment, and the transmission equipment is prone to failure, which will cause interruption of reagent addition, resulting in fluctuations in flotation indicators, and affecting the stable operation of production.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a method for adding mineral dressing reagents, which can realize stable addition of mineral dressing reagents. The specific plan is:

.A method for adding mineral dressing reagents, by adopting the ladder arrangement of reagent buffer stirring tank and reagent buffer box, the mineral dressing reagent will flow to each reagent adding point by its own gravity; the liquid level in the reagent buffer tank is kept constant; the outflow of the reagent is controlled by the valve Open and close to control.

The invention also discloses a device for realizing the method, including a buffer stirring tank, a chemical buffer tank, and a PLC; the beneficiation reagent is transported to the chemical buffer stirring tank through a pipeline; the chemical buffer stirring tank and the chemical buffer tank are arranged in steps; the chemical buffer and stirring The tank is connected to the medicine buffer tank through a pipeline, and the pipeline is provided with a regulating valve; the medicine buffer tank is provided with a liquid level gauge, and the liquid level signal of the liquid level gauge is fed back to the PLC, and the PLC controls the regulating valve according to the liquid level signal ; The drug buffer tank is provided with an outflow pipeline, and the outflow pipeline is provided with a solenoid valve, and the opening and closing of the solenoid valve is controlled by PLC.

When the same mineral dressing agent needs to be added at multiple points, there are multiple solenoid valves. Multi-point medicaments can be added separately by setting different solenoid valve opening and closing times respectively.

The present invention is provided with a medicament buffer stirring tank and a medicament buffer box, which are arranged in steps. The prepared beneficiation agent is transported through the pipeline to the agent buffer stirring tank for storage. The beneficiation agent flows into the agent buffer box through the pipeline. A regulating valve is provided in the connecting pipeline between the chemical buffer stirring tank and the chemical buffer tank. The medicine buffer tank is equipped with a liquid level gauge, and the liquid level gauge is interlocked with the regulating valve. When the liquid level in the chemical buffer tank changes, the opening of the regulating valve is adjusted through the liquid level signal to ensure that the liquid level of the chemical buffer tank is constant. Since the liquid level in the chemical buffer tank is always in a constant state, the flow rate of the beneficiation chemical in the pipeline is also constant, so that the addition amount of the chemical can be precisely controlled to achieve a stable addition.

Mineral dressing equipment, such as flotation machines, are installed below the system, and the mineral dressing reagents flow out of the solenoid valve and flow to each reagent adding point under the action of gravity.

Advantages and effects of the present invention are as follows:

The invention adopts a constant liquid level device to ensure that the liquid level of the medicine is always constant, and the medicine relies on its own gravity to flow automatically, which ensures the accurate, continuous and stable addition of the mineral dressing medicine. The method has the characteristics of low cost, accurate measurement, simple maintenance and high degree of automation.

Description of drawings

Fig. 1 is the accompanying drawing of the addition method of a kind of ore dressing agent of the present invention.

In the drawings: 1. Inlet pipeline; 2. Chemical buffer stirring tank; 3. Pipeline; 4. Regulating valve; 5. Chemical buffer tank; 6. Liquid level gauge; 7. Outflow pipeline; 8. Solenoid valve; 9. PLC.

Detailed ways

The present invention is specifically described below in conjunction with accompanying drawing, as shown in Figure 1, the present invention comprises and comprises buffer stirring tank 2, medicament buffer box 5, PLC9; Mineral dressing medicament is delivered in the medicament buffer stirring tank 2 through entering pipeline 1; 2 and the drug buffer tank 5 are arranged in steps; the drug buffer stirring tank 2 is connected to the drug buffer tank 5 through a pipeline 3, and the pipeline 3 is provided with a regulating valve 4; the drug buffer tank 5 is provided with a liquid level gauge 6, and the liquid level The liquid level signal of the meter 6 is fed back to PLC9, and the PLC9 controls the regulating valve 4 according to the liquid level signal. When the liquid level in the drug buffer tank 5 is low, the opening of the regulating valve 4 increases; , the opening of the regulating valve 4 is reduced to ensure that the liquid level in the medicament buffer tank 5 is always in a constant state; PLC9 control.

There are multiple solenoid valves 8 .

Each reagent addition point is set at the bottom of the system, and the ore dressing reagent flowing out through the solenoid valve 8 flows to each reagent addition point by its own gravity.

In the present invention, a liquid level gauge is arranged in the medicine buffer tank and a regulating valve arranged on the pipeline constitutes a control closed circuit, which always ensures a constant liquid level in the medicine buffer tank. On the premise that the liquid level of the chemical buffer tank is constant, by adjusting the opening and closing times of the solenoid valve on the pipeline, the addition amount of the mineral dressing chemical is controlled to ensure the stable addition of the mineral dressing chemical, so that the production continues to run stably.

Claims (3)

1. the adding method of a beneficiation reagent, is characterized in that: by adopting medicament buffering tank diameter and medicament baffle-box ladder to arrange, beneficiation reagent relies on self gravitation to add point from flowing to each medicament; In described medicament baffle-box, liquid level keeps constant; Controlling medicament discharge is controlled by valve opening and closing.

2. a device of realizing method described in claim 1, is characterized in that: comprise buffering tank diameter, medicament baffle-box, PLC; Beneficiation reagent is delivered in medicament buffering tank diameter through pipeline; Medicament buffering tank diameter and medicament baffle-box ladder are arranged; Medicament buffering tank diameter is connected by pipeline with medicament baffle-box, described install pipeline control valve; Described medicament baffle-box is provided with liquid level gauge, and the liquid level signal of described liquid level gauge feeds back to PLC, and described PLC controls to adjust valve according to liquid level signal; Medicament baffle-box arranges outflow pipeline, described outflow install pipeline magnetic valve, and the switching of described magnetic valve is controlled by PLC.

3. device according to claim 2, is characterized in that: described magnetic valve is multiple.

Images