Wear -resisting coal powder injection rifle of blast furnace pressure boost

Wear -resisting coal powder injection rifle of blast furnace pressure boost, including the body of a gun, rifle head, the cermet of rifle pretext steel pipe and inside lining constitutes, and rifle head front end is crooked, fixing device is provided to body of a gun periphery, and fixing device includes spray gun checkpost threaded connection's spray gun checkpost nut, chucking piece, provides oily asbestos between spray gun checkpost and the spray gun checkpost nut, installs the cross section between the chucking piece terminal surface relative with the spray gun nut and holds the ring tightly for triangle -shaped's opening metal, and the metal is held the interior anchor ring of ring tightly and is laminated mutually with the coal powder injection long tube of coal powder injection rifle, and internal diameter that the one end of ring was held tightly towards the metal to chucking piece and spray gun nut is lighter than the metal and holds tightly and encircle maximum diameter.