2 results about "Coal preparation plant" patented technology

The invention belongs to a coal slime flotation method in coal mine production and particularly relates to pre-separation process of coal slime flotation. Slime water of a coal preparation plant is evenly mixed, after the slime water is graded through a concentration hydrocyclone, underflow serves as coarse clean coal, overflow slime water passes through an overflow feeding pipe of the concentration hydrocyclone to enter a buffering agitator (3), a coarse separating screen plate (2) arranged in the buffering agitator (3) in an inclined mode is utilized to remove large particles, the overflow slime water enters the buffering agitator (3) after the coarse particles are removed, the overflow slime water is evenly mixed, and the slime water evenly mixed in the buffering agitator (3) is pumped into the left end of a first feeding pressure stabilizing pipe (5) connected with the upper portion of a first hydrocyclone (7) through a feeding slurry pump. Fine pea coal, low ash content fine fraction coal and non-coal mine coenobium parts are discharged from a bottom flow opening (10) of a taper angle hydrocyclone of a first hydrocyclone set and enter a section of a bottom flow buffering pond (11), and high ash content granule minerals are discharged through an overflow pipes (14) at the upper ends of small taper angle hydrocyclones in a second hydrocyclone set. Compared with prior art, the pre-separation process of coal slime flotation can achieve pre-separation before coal slime enters a flotation system.

The present invention provides a method for centralized control system data monitoring, and relates to the technical field of computers. A monitoring layer network and a management layer network in anenterprise are connected, an IISweb server is arranged in the management layer network, a data receiving program is deployed on the IISweb server, a data collection program on an upper computer in the monitoring layer network collects required centralized control system data from man-machine interface software and sends the required centralized control system data to the IISweb server, the data receiving program processes the received data and stores the data to a sharing memory space of the IISweb server, the content of a data display web page is changed with the data content of the sharingmemory space, and finally, a client in the management layer network sends a request to the IISweb server through a web browser and browses the centralized control system data display web page. The method for centralized control system data monitoring can meet the monitoring demand of enterprise managers for production process data of a coal preparation plant and cannot need to install special man-machine interface software on each manager's computer or purchase special man-machine interface webpage publishing software so as to avoid many troubles.