Coal gangue separation online drying system

Abstract

The invention provides a coal gangue separation online drying system which comprises a combustion furnace and a separation system main air blower communicated with a smoke outlet of the combustion furnace through a pipeline. The separation system main air blower is communicated with an air chamber of a combined type dry method horizontal separation machine. The coal gangue separation online drying system is characterized in that the system further comprises a cleaned coal conveyor, a multilevel fan mill, a pulverized coal burner and a combustion air blower; the cleaned coal conveyor is used for conveying cleaned coal fuel, and the multilevel fan mill is used for pulverizing the cleaned coal from the cleaned coal conveyor; the pulverized coal burner is used for blowing pulverized coal from the multilevel fan mill into the combustion furnace, and the combustion air blower is used for blowing air to the combustion finance through an air blowing pipeline; a cyclone dust collector used for removing dust in smoke is mounted on a connection pipeline between the smoke outlet of the combustion furnace and the separation system main air blower. Through the coal gangue separation online drying system, online drying of separation materials is achieved, the problems that large land is occupied and efficiency is low during natural airing are solved, and it is ensured that the separation materials suitable for air separation are provided around the clock.

Description

technical field [0001] The invention belongs to the technical field of coal preparation, and in particular relates to an online drying system in a composite dry coal preparation process, that is, an online drying system for coal gangue separation. Background technique [0002] In the existing traditional coal preparation process, in order to reduce the adverse effects of moisture in the separation material on the coal preparation equipment, system or process, and to improve the efficiency and quality of coal preparation, it is generally necessary to separate the raw coal before separating it. to dry. [0003] The specific method is to stack the crushed raw coal under the shed, and mainly rely on air drying to dry naturally. This method is slow to dry, takes up a lot of land, is inefficient, and is unevenly dried, which increases production costs. [0004] In addition, since modern coal mines all adopt mechanized coal mining, water is required to cool the drill bit during th...

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Problems solved by technology

[0003] The specific method is to stack the crushed raw coal under the shed, and mainly rely on air-drying to dry naturally. This method is slow to dry, takes up a lot of land, is inefficient, and is unevenly dried, which increases production costs.

[0004] In addition, since modern coal mines all adopt mechanized coal mining, water is needed to cool down the drill bit during the coal mining process, and the raw coal out of the mine has a high moisture content, resulting in poor effect of traditional dry separation devices, or even complete failure

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