A vacuum calciner

Abstract

The invention discloses a vacuum calcination furnace, which relates to the technical field of calcination, comprising: a cylinder, which includes a first cylinder part and a third cylinder part arranged at one end of the first cylinder part; a vacuum suction head, which is arranged laterally In the cylinder, for vacuuming the inside of the cylinder, one end of the vacuum suction head is arranged in the third cylinder part, and the vacuum suction head is located in the third cylinder part One end has an exhaust port for exhausting the gas in the cylinder. The beneficial effect of the present invention is that it can reduce or even prevent the powdery raw materials from being sucked away in the calciner, improve the service life of the vacuum device, reduce raw material loss, and save production costs; It leads to the loss of raw materials, and avoids the situation of blocking the vent hole. It can also drive the flow of gas, so that the raw materials can be mixed evenly, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of vacuum furnaces, in particular to a vacuum calciner. Background technique [0002] At present, in the nonferrous metallurgy industry, calcination furnaces are often used to smelt nonferrous metal raw materials under vacuum conditions. Therefore, it is necessary to use a vacuum device to extract the gas inside the calcination furnace, so that a vacuum state is formed in the calcination furnace. However, due to the The raw materials are generally in the form of powder. When the vacuuming device in the prior art vacuumizes the calciner, it will also take away the non-ferrous metal raw materials in the calciner, causing the non-ferrous metal raw materials to be pumped into the vacuum pump, which is not only easy Damage the vacuum pump, reduce the service life of the vacuum pump; and increase the loss of non-ferrous metal raw materials, resulting in an increase in production costs. And if the non-ferrous meta...

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Problems solved by technology

[0002] At present, in the nonferrous metallurgy industry, calcination furnaces are often used to smelt nonferrous metal raw materials under vacuum conditions. Therefore, it is necessary to use a vacuum device to extract the gas inside the calcination furnace, so that a vacuum state is formed in the calcination furnace. However, due to the The raw materials are generally in the form of powder. When the vacuuming device in the prior art vacuumizes the calciner, it will also take away the non-ferrous metal raw materials in the calciner, causing the non-ferrous metal raw materials to be pumped into the vacuum pump, which is not only easy Damage the vacuum pump, reduce the service life of the vacuum pump; and increase the loss of non-ferrous metal raw materials, resulting in an increase in production costs

And if the non-ferrous metal raw materials are directly discharged to the outside along with the air, it will also pollute the environment to a certain extent

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