Fluidized bed furnace used for one-step roasting of stone coal

Abstract

The invention relates to a fluidized bed furnace used for one-step roasting of stone coal. According to the technical scheme, a first wind chamber (17), a second wind chamber (16) and a third wind chamber (15) which are arranged below a first fluidized bed (1), a second fluidized bed (2) and a third fluidized bed (14) in sequence communicate with a first fan (22), a second fan (23) and a third fan (24) correspondingly through pipelines. A furnace body (10) is provided with a first gas burner (4), a second gas burner (5) and a third gas burner (13). A first discharging outlet (19), a second discharging outlet (20) and a third discharging outlet (26) are sequentially arranged between a first overflow plate (18) and the front side wall of the furnace body (10), between a second overflow plate (21) and the front side wall of the furnace body (10) as well as between a third overflow plate (25) and the front side wall of the furnace body (10). A tuyere (7) is formed in the upper portion of the left side wall of the furnace body (10) and communicates with a fourth fan (6). A feeding inlet (8) is formed in the top of the furnace body (10), and the central extension line of the feeding inlet (8) intersects with the central extension line of the tuyere (7). The fluidized bed furnace used for one-step roasting of stone coal has the characteristics of being high in raw material adaptability, easy to operate, high in roasting material yield, high in roasting efficiency and high in energy utilization rate.

Description

technical field [0001] The invention belongs to the technical field of fluidized fluidized furnaces. Specifically relates to a fluidized fluidized furnace for one-step roasting of stone coal. Background technique [0002] As the traditional sodium roasting-water leaching vanadium extraction process of stone coal is gradually replaced by a new vanadium extraction process, the research on the equipment and technology of the blank roasting link in the process of vanadium extraction from stone coal is increasingly in-depth. In recent years, based on the characteristics of high roasting efficiency, strong fuel adaptability and fast adjustment speed of fluidized roasting technology, as well as the wide application of this technology in the field of nonferrous metallurgy, fluidized roasting technology and equipment have been widely used in the field of vanadium extraction from stone coal. It has also been deeply researched and widely used. [0003] Due to the special movement sta...

AI Technical Summary

Problems solved by technology

Although this method can obtain a yield of more than 80% of the roasted material, the implementation process is relatively complicated. Before the stone coal is put into the furnace, operations such as classification and granulation are required.

[0004] To sum up, the existing stone coal roasting methods still have problems such as poor adaptability of raw materials, complicated treatment process, low yield of roasted materials, low roasting efficiency and low energy utilization rate.

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