An energy-saving and environment-friendly coal slime dryer and its application method

Abstract

The invention discloses an energy-saving and environment-friendly coal slime drying machine and a use method thereof. The energy-saving and environment-friendly coal slime drying machine comprises a roller arranged obliquely, and driving mechanisms and a limiting mechanism are arranged at the bottom end of the roller; an air inlet mechanism is arranged at a side end of the roller, and a feeding mechanism is fixed to the top of one end of the roller; a fixing disc is welded to one end of the inner wall of the roller, a drainage mechanism is rotatably arranged at the middle position of the fixing disc, the drainage mechanism comprises a drainage rod, a first limiting plate is arranged at one end of the drainage rod, and a second limiting plate is arranged at the other end of the drainage rod; an air outlet pipe connected to tail gas treatment equipment is arranged at the side end of the second limiting plate; and discharging mechanisms distributed parallelly are arranged at the bottom ofthe roller, and the discharging mechanisms are arranged right below drainage paddles. According to the energy-saving and environment-friendly coal slime drying machine and the use method thereof, through the transmission of third gears and racks, and under the action of gravity and spiral material leading paddles, materials with small particle sizes can be obtained, and the purpose of screening in the roller is finally realized; and the structure is simple, the manufacturing cost is reduced, and the energy-saving and environment-friendly coal slime drying machine and the use method thereof are suitable for small-scale production and have good popularization practicability.

Description

technical field [0001] The invention relates to the field of coal slime drying, in particular to an energy-saving and environment-friendly coal slime dryer and a usage method thereof. Background technique [0002] Coal slime is a by-product produced in the process of coal washing in coal preparation plants. It has the characteristics of high moisture content, high viscosity, and high water holding capacity, so it is difficult to realize industrial application. Most of it is used for coal slime boiler combustion power generation, etc. In order to prevent the coal slime from bringing too much water into the boiler, it is necessary to dry the coal slime first, and then the dried coal slime enters the boiler together with other raw coal for combustion, which improves the production efficiency. [0003] In the prior art, the equipment used for the drying of coal slime is bulky, heavy, and occupies a large area, so the investment cost of the plant and infrastructure is high, and i...

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Problems solved by technology

[0003] In the prior art, the equipment used for the drying of coal slime is bulky, heavy, and covers a large area, so the investment cost of the plant and infrastructure is high, and it cannot meet the needs of small-scale production.

At the same time, the internal structure of the dryer in the existing equipment is cumbersome, and the discharge of materials is prone to accumulation, so the materials can only be discharged at one time, but the calorific value produced by the coal slime with different particle sizes during combustion is also different, which will affect the subsequent coal. Mud burning is inconvenient and likely to cause waste of materials

If the material is discharged and then screened, the difficulty of screening is greatly increased and the work efficiency is reduced. Now an energy-saving and environment-friendly coal slime dryer and its use method are proposed.

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