The automatic addition of medicines depends on the type of medicine, the amount of medicine required and whether to measure and detect different types of automatic dosing machines. Common dosing methods in China's mineral processing plants are:
(1) Small-measurement detection and automatic addition of medicines. The demand for medicines is as small as tens of grams per minute. General natural gas flow meters are not suitable for the precise measurement of natural gas flow meters. Based on the basic concept of natural gas flow meters with overflow valves, The level pressure natural gas flow meter is used to form a testing device to accurately measure the flow rate of the drug, and the drug is added through the automatic dosing device using a pulse circuit to control the switch relay.
(2) Quantitative analysis method automatic dosing machine. The dosing range is 3.0-3,000 mL\/min, and the control error is ±3 percentage. For example, add 2 oil, butyrate, kerosene and other general drugs. The dosing machine is based on PLC The control system technology can be expanded to more than 150, and the system can be remotely operated to set the value and automatically add drugs. It can be widely used in mineral processing and flotation reagents, extraction and other production processes that require quantitative analysis to add liquid drugs.
(3) Hydrated lime adding equipment. The automatic dosing machine is currently used in China to adjust the PH value of flotation reagents. The hydrated lime added has always puzzled most mineral processing plants in China. The important reasons are: hydrated lime contains high impurities, is easy to form calcium, and has poor fluidity. , the corrosion is large. Most mineral processing plants choose to add artificially, which not only consumes a lot of quicklime powder and pollutes the air, but also cannot achieve efficient control of the PH value, harming the flotation reagent indicators.
