Slime water mixed dosing and filter press linkage system and method for coal dressing

Abstract

The invention relates to a slime water mixed dosing and filter press linkage system and method for coal dressing. According to the invention, a first automatic dosing belt is used for adding an anionic agent into a first funnel, and a second automatic dosing belt is used for adding a cationic agent into a second funnel; the first funnel, a gas ring vacuum pump, a mixing device, a stirring barrel,a chemical storage box, a dosing device, a concentration tank, a filter pressing feeding barrel and a filter press are sequentially connected through connecting pipelines; the second funnel is connected with the stirring barrel; a slime water main pipe is connected with the concentration tank; a feeding concentration meter and a first flow meter are installed on the slime water main pipe; an interface instrument, an underflow concentration meter and a second flow meter are installed in the concentration tank; and an electromagnetic valve, a current measuring meter and a filtrate water flow meter are installed on the filter press. According to the invention, automatic combined dosing is achieved, manpower is reduced, and labor intensity is reduced; agent waste can be effectively reduced, and a dosing process can be more accurately controlled; equipment investment can be reduced, and cost is effectively reduced; and dosing time is shortened and working efficiency is improved.

Description

Technical field[0001]The present invention relates to the technical field of coal washing, in particular to a system and method for mixing and dosing of coal cleaning slime water and filter press linkage.Background technique[0002]In the past 10 years or so, although the coal industry has achieved rapid development, the average labor productivity of China's large coal enterprises is much lower than that of their overseas counterparts. In the coal washing and processing link, labor productivity is also not high, even though most coal washing plants have achieved centralized control , But production and management still require manual participation in the entire process, highly dependent on manual experience, and lagging behind in information and intelligent construction.[0003]The slime water dosing system is used to prepare and add flocculants and flocculants for purifying slime water to accelerate the sedimentation speed of fine particles in the slime water. Make the clarified overfl...

AI Technical Summary

Problems solved by technology

The traditional dosing process is to manually control the dosing amount, and observe the concentration of the clarified layer of the concentration tank with the naked eye. The operation process cannot be quantified, and it is easy to cause waste of chemicals. In addition, the underflow obtained from the concentrator needs to be transported to the filter press through the underflow workshop For processing, but it is necessary to manually check back and forth the storage situation of the underflow in the underflow tank, and it is necessary to communicate with the filter press workshop frequently, which is time-consuming and laborious, and affects efficiency

Although there are also some devices that adopt intelligent dosing in the prior art, a kind of intelligent dosing mechanism is disclosed in the patent application whose publication number is CN109574172A, but the structure of the whole device is complicated and the control is troublesome.

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