Decarburization roasting device of vanadium extraction by fire for stone coal containing vanadium and processing thereof
A roasting device and decarburization technology, which is applied in the field of vanadium extraction from vanadium-containing stone coal, can solve problems such as unreasonable heat utilization, and achieve the effects of reducing production costs and simplifying procedures
Active Publication Date: 2011-05-18
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
[0005] Aiming at the unreasonable heat utilization problem existing in the vanadium-containing stone coal extraction and roasting process, the purpose of the present invention is to propose a vanadium-containing stone that simplifies the process and rationally utilizes the heat in the vanadium extraction and roasting process without external supplementary heat. Coal-fired vanadium decarburization roasting device and its technology
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[0027] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.
[0028] Such as figure 1 Shown is the schematic structural view of the roasting furnace of the present invention. The roasting furnace is composed of a pre-combustion chamber 1, an annular air distributor 2, a main body 3 and a central pipe 5, wherein the main body 3 is a cylindrical sleeve, the upper part is connected with the pre-combustion chamber 1, and one end of the central pipe 5 is placed in the cylindrical sleeve Inside the main body one 3, one end protrudes outside the main body one 3, a plurality of annular air distributors 2 are assembled on the outer wall of the main body one 3, and the bottom is a tapered discharge port 4.
[0029] Such as figure 2 Schematic diagram of the structure of the annular air distributor of the present invention. The annular air distribution device 2 is composed of an annular air duct 10, an upper air duc...
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The invention belongs to the technical field of vanadium extraction, in particular relates to a decarburization roasting device of vanadium extraction by fire for stone coal containing vanadium and processing thereof dispensed with external heating source. By the processing, after the stone coal and combustion-supporting wind are ignited in a precombustion chamber, the ignited stone coal enters a main body I tangentially, and goes ahead spirally in the main body I, and is mixed uniformly with extrusive hot air from an annular air register, after sufficient decarburization and oxidizing roasting, and through gas-solid segregation in a taper discharge opening, clinker is discharged from the taper discharge opening, and the high temperature smoke upward countercurrent is discharged from a central tube; the clinker enters a cooling device through a charging chamber, drops slowly and is subject to heat exchange with the circulating air upward though a taper ventilation terminal under the distributive effect of a cavernous structure on an elastic damping body, and the heated air enters into the precombustion chamber from a discharge opening through a pipeline to preheat the stone coal; and the cooled clinker is subject to subsequent working procedures of leaching, vanadium deposition, ignition and the like, so that a V2o5 product is extracted. In the invention, the working process is simplified, the heat exists in the working procedure of vanadium extraction and roasting is utilized reasonably, and heat is not required to be supplied externally.
Description
technical field [0001] The invention belongs to the vanadium extraction technology of vanadium-containing stone coal, and in particular relates to a decarburization roasting device and a process for extracting vanadium from vanadium-containing stone coal by fire without an external heat source. technical background [0002] Stone coal is a kind of coal resource stored in ancient rock formations. It is a kind of sapropel peat formed by algae and fungi in the geological period 500 million years ago in a shallow sea environment. Stone coal mostly has the characteristics of high ash, high sulfur and low calorific value. In addition to organic carbon, its composition also contains silicon oxide, calcium oxide and a small amount of iron oxide, aluminum oxide and magnesium oxide. [0003] Typical stone coal contains more elements such as C, V, Ca, Al, Si, etc. Therefore, stone coal can not only be used as fuel for power boilers and cement kilns, but also the slag after combustion c...
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IPC IPC(8): F27B1/00F27B1/10F27B1/16F27B1/24C22B34/22
Inventor 夏德宏张艳徐元博胡羽霍婧舒斌陈良泽
Owner UNIV OF SCI & TECH BEIJING