Flotation agent feeding system based on drop type coal slurry pretreatment device

• Main Authors: YANG DONGDONG, XUE PENGCHENG, LI FANG, ZHU JINBO, ZHOU WEI, LUO LAIQIN, ZHENG GANGFENG
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2013
• Subjects: MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TRANSPORTING

The invention belongs to the field of coal slurry pretreatment equipment for coal slime powder pretreatment, and specifically relates to a flotation agent feeding system based on a drop type coal slurry pretreatment device. The flotation agent feeding system at least comprises a water jetting sprayer for mixing water and a flotation agent, and further comprises a secondary mixing unit; and the liquid inlet end of the secondary mixing unit is fixedly connected with the mixed liquid outlet of the water jetting sprayer, and a flowing section on the secondary mixing unit is a variable cross-section structure. Through the variable cross-section structure of the flowing section on the secondary mixing unit, namely, the flowing section gradually or suddenly varies on a mixed liquid dropping path, when the primarily mixed liquid sprayed by the water jetting sprayer, namely the generally said emulsion, passes through the secondary mixing unit, the mixed liquid generates turbulent flow, eddy even onflow phenomenon on t