A large mine bolted steel structure cylinder used in the mixing and mixing industry, including wall plates, bottom plates, embedded plates, ore inlets, ore discharge ports, fillers, bolts, and the wall plates of the cylinder body are composed of multi-section cylinders The barrel section is arranged coaxially and is composed of bolts; the barrel section is composed of multi-section steel plates with flange surfaces, and fillers are added to the flange surfaces between the barrel sections and the barrel sections are connected by bolts to form the barrel body. Wall plate; fillers are added to the joints of each flange surface of the wall plate, and the adjacent flanges and fillers are connected and fixed with bolts; the wall plate of the cylinder is provided with an ore feeding port and a mine discharge port; The buried plate, the bottom plate and the embedded plate are connected to the ground with anchor bolts; the wall plate, the bottom plate, and the embedded plate are connected to the ground with anchor bolts to form a complete cylinder. The device is easy to install, has various transportation methods, high installation quality, high installation safety and short installation period.