Flotation automatic dosing machine measurement verification and flotation agent control

　　Flotation automatic dosing machineIn the mineral processing production process, the addition of flotation agent can be reasonably measured, verified and controlled. Some mineral processing plants may manually make dosing valves based on the operator's work experience, resulting in a relatively large amount of flotation agent used; in foreign flotation The chemical machine does not have a flotation agent detection instrument, but only some indirect physical quantities. Such indirect signals cannot truly and accurately reflect the actual increase in flotation agent. Therefore, it is necessary to develop a type of flotation agent that can accurately measure and verify the flotation agent. It is inevitable to select drugs and add equipment automatically. The automatic addition of drugs depends on the type of drug, the amount of drug and whether it is measured and calibrated. The common dosing methods in China's mineral processing plants are:

(1) Automatic increase in small-measurement calibration of drugs. The amount of drugs is as small as tens of grams per minute. The ordinary flow meter is not suitable for monitoring this kind of fine flow. According to the working principle of the throttle flow meter, the micro-differential pressure can be used The flow meter is combined with monitoring equipment to monitor the fine flow of medicine, and the pulse power circuit is used to switch the solenoid valve on and off according to the dosing equipment to add medicine.

(2) Flotation automatic dosing machine, quantitative dosing machine. Dosing range is 3.0-3000mL\/min, control error ±3%, such as adding 2 oil, butyrate, kerosene and other common drugs. SMCJ series products have multiple floating points The program-controlled reagent dosing machine is a system based on PLC control technology that can be expanded to more than 200 points to realize remote control and setting of fully automatic adding of medicaments. It can be widely used in mineral processing, flotation reagents, extraction and other liquid medicaments that need to be quantitatively added. The production process flow.

(3) Lime milk addition equipment for flotation automatic dosing machine. At present, lime milk added by adjusting the pH value of flotation reagents in China has always puzzled most mineral processing plants in my country. The main reasons are: lime milk contains high impurities and is easy to form. Calcium has poor fluidity and high corrosiveness. Most mineral processing plants use artificial addition, which not only consumes a lot of lime powder and pollutes the environment, but also the pH value cannot be reasonably controlled, interfering with the flotation agent index value.