CN201580996U - Nano zinc oxide roasting furnace - Google Patents

Abstract

The utility model relates to a nanometer zinc oxide bakes burning furnace over a slow fire, relates to the equipment of preparation nanometer zinc oxide, and specifically speaking is a nanometer zinc oxide bakes burning furnace over a slow fire, provides a simple structure, can guarantee that thermal decomposition fully accomplishes, can the effective control nanometer zinc oxide particle diameter appearance under the lower temperature condition bakes burning furnace over a slow fire. The roasting furnace consists of a furnace body, a heat source, a rotating device and a sieve plate, wherein the rotating device consists of a rotating chain and at least two rotating wheels, the rotating chain is wound on the rotating wheels arranged at two sides in the furnace body, and the sieve plate is wound on the rotating chain; an air outlet is also arranged on the furnace body, and the position of the air outlet is lower than the upper plane of the sieve plate. The utility model discloses be provided with the air outlet with vacuum pump connection, make the precursor be in negative pressure state in the roaster all the time through the vacuum pump, calcination temperature and particle diameter are easily controlled, and the product particle diameter is less, and specific surface area is big, chemical activity is high, and product quality is high.

Description

A kind of nano zinc oxide roasting furnace

technical field

The utility model relates to equipment for preparing nano zinc oxide, in particular to a nano zinc oxide roasting furnace.

background content

At present, most of the nano-zinc oxide roasting equipment adopts kilns and brick kilns, and coal is used as energy source. The production process has high pollution and high energy consumption. It is difficult to control the temperature during the roasting process. It is effectively controlled, and the obtained nanometer zinc oxide particle size is larger, the specific surface area is smaller, and the chemical activity is lower.

Utility model content

The technical problem to be solved by the utility model is to propose a nano-zinc oxide roasting furnace with a simple structure, which can fully complete thermal decomposition under relatively low temperature conditions, and can effectively control the particle size and shape of nano-zinc oxide.

The technical solution of the utility model to solve the technical problem is: the roasting furnace is composed of a furnace body, a heat source, a rotating device and a sieve plate, the heat source is arranged above the furnace body, the rotating device is arranged below the furnace body, and the rotating device is composed of a rotating chain and at least Composed of two rotating wheels, the rotating chain is wound on the rotating wheels arranged on both sides of the furnace body, and the sieve plate is disposed on the rotating chain; The feed openings are respectively arranged on the sides of the furnace body with the rotating wheels, and an air outlet is also arranged on the furnace body, and the air outlet is arranged at a position lower than the plane on the sieve plate.

The heat source described in the utility model is an electric heat source.

The electric heating source is an electric heating tube or an electric heating wire.

The usage method of the utility model: 1. Turn on the transmission and rotation device, and the material enters the furnace through the transmission from the feed port. 2. Set the temperature to a constant value and turn on the power to heat up. 3. When the temperature reaches the set value, turn on the vacuum pump to make the roaster in a negative pressure state. 4. When the set time is reached, the transmission device is turned on, and the materials in the furnace are discharged from the discharge port.

The beneficial effects of the utility model are: the utility model is provided with an air outlet connected to a vacuum pump, and the precursor is always in a negative pressure state in the roasting furnace through the vacuum pump: the roasting reaction is greatly improved without increasing the roasting temperature. The second is to strengthen the heat transfer of materials during the roasting process and provide sufficient energy to the roasting process. The third is to inhibit the possible reverse reaction during roasting to ensure that the product particles will not grow up. The fourth is to use roasting The generated exhaust gas preheats the materials that have not been roasted to improve the thermal efficiency of the equipment. Therefore, the utility model has the following advantages:

1. The roaster uses electric energy, saves energy, has no pollution, and has a clean operating environment.

2. Calcination temperature and particle size are easy to control, the product has small particle size, large specific surface area, high chemical activity and high product quality.

3. Shorten the roasting time, because the system is in a negative pressure state, which is conducive to the reaction.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

In the figure: 1, furnace body, 2, electric heating tube, 3, feed inlet, 4, discharge outlet, 5, transmission wheel, 6, rotating chain, 7, sieve plate, 8, air outlet.

Detailed ways

Below in conjunction with embodiment and with reference to accompanying drawing, the utility model is described in further detail.

Referring to Fig. 1, an electric heating tube 2 is arranged above the furnace body 1, and a rotating device composed of two rotating wheels 5 and a rotating chain 6 is arranged below the furnace body 1, and the two rotating wheels 5 are arranged on In the side of the furnace body of the feed port 3 and the discharge port 4, the rotating chain 6 is arranged around the rotating wheel, and the sieve plate 7 is arranged around the rotating chain; the furnace body 1 is provided with a feed port 3 and a discharge port 4 , the air outlet 8 is arranged below the feed port 3 and between the upper and lower layers of the sieve plate 7 surrounding the furnace body 1 .

Claims (3)

1. A nano-zinc oxide roasting furnace is composed of a body of furnace, a heat source, a rotating device and a sieve plate, and is characterized in that: the heat source is arranged above the body of a furnace, and the rotating device is arranged at the bottom of the body of a furnace, and the rotating device consists of a rotating chain and a It consists of at least two rotating wheels, the rotating chain is wound on the rotating wheels arranged on both sides of the furnace body, and the sieve plate is disposed on the rotating chain; The material outlets are respectively arranged on the sides of the furnace body with the rotating wheels, and an air outlet is also arranged on the furnace body, and the air outlet is arranged at a position lower than the plane on the sieve plate. 2. The roasting furnace according to claim 1, characterized in that: said heat source is an electric heat source. 3. The roasting furnace according to claim 2, characterized in that: said electric heating source is an electric heating tube or an electric heating wire.

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