Energy-saving high-efficiency inclined vanadium-nitrogen alloy furnace

Abstract

The invention discloses an energy-saving high-efficiency inclined vanadium-nitrogen alloy furnace which can solve the problems of low production efficiency and great loss. The energy-saving high-efficiency inclined vanadium-nitrogen alloy furnace comprises a vanadium-nitrogen alloy furnace body, a smoke outlet, a low temperature section, a medium temperature section, a high temperature section, a cooling section, a nitrogen gas inlet, a discharge outlet, a feed inlet, heating elements and a furnace inclined supporting frame, wherein the vanadium-nitrogen alloy furnace body is sequentially provided with the low temperature section, the medium temperature section, the high temperature section and the cooling section; the heating elements comprise an upper heating element and a lower heating element, the upper heating element is arranged at the upper portion of an intermediate furnace charge main passage, and the lower heating element is arranged at the lower portion of the intermediate furnace charge main passage; and the vanadium-nitrogen alloy furnace body and the ground form an included angle alpha which is 0 to 14.47 degrees.

Description

[0001] The invention relates to a vanadium-nitrogen alloy heating device, in particular to an energy-saving high-efficiency inclined vanadium-nitrogen alloy kiln. Background technique [0002] As a new type of steel additive, vanadium-nitrogen alloy can replace ferro-vanadium in the production of microalloyed steel. It can be added to steel to improve the comprehensive mechanical properties of steel, such as strength, toughness, ductility and thermal fatigue resistance. Steel has good weldability; under the same strength, the addition of vanadium-nitrogen alloy can save 30% to 40% of vanadium compared with vanadium addition, reducing the cost; vanadium-nitrogen alloy has been widely used by domestic and foreign steel plants, and its production process is The production equipment has been developed rapidly. [0003] At present, the heating furnace equipment used in the production of vanadium-nitrogen alloys on the market is roughly as follows: vacuum electric furnaces for intermitte...

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Problems solved by technology

[0003] At present, the heating kiln equipment used in the production of vanadium-nitrogen alloys in the market generally has the following types: vacuum electric furnace intermittent production; Panzhihua Iron and Steel adopts electric heating tunnel kiln, intermediate frequency electric heating There are defects in all kilns, vacuum electric furnace intermittent production, low production efficiency; electric heating tunnel kiln, the gas in the kiln cannot be discharged in time, and eddy currents are formed in the kiln, and water vapor and other corrosive gases in the kiln have harmful effects on the refractory materials in the kiln. A certain degree of corrosiveness affects the life of the furnace body, and at the same time hinders the entry of nitrogen into the reaction, affecting the quality of the product; the intermediate frequency electric heating shaft furnace, the material expands with heat and contracts with cold in the kiln, which is easy to block the kiln and cause damage to the inner wall of the kiln. Affects the service life of the furnace; tube furnaces and microwave ovens are not suitable for large-scale industrial production, and currently only a few of them are used in the country

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