Zinc oxide rotary kiln is a rotary kiln designed for zinc oxide. Because zinc oxide is a fine powder, we must make a specific rotary kiln for zinc oxide, so we are talking about zinc oxide rotary kiln. The zinc oxide rotary kiln is widely used not only for zinc oxide but also for the production of secondary zinc oxide.

Materials for refining zinc oxide: zinc soil, zinc ore, steel mill, medium frequency furnace, blast furnace zinc-containing dust ash, gas ash, gas mud, imported flue ash, zinc oxide and its lead plant slag, zinc sulphate mud, Immerse the mud and other zinc-containing waste.

Characteristics of zinc oxide rotary kiln:

   (1) After adding active zinc oxide to the rubber compound, the rubber can have good wear resistance, tear resistance and elasticity.

   (2) Zinc oxide is used as a white pigment. Due to the good activation properties of active zinc oxide, it has been widely used in rubber products, such as not only replacing the ordinary zinc oxide in the V-belt, but also reducing the 1/2-1/3. The dosage makes the various performance indexes of the rubber stable, the vulcanization performance is not affected, and the production cost is lowered.

   (3) Fine-grained zinc oxide can be used as a pharmaceutical.

   (4) Because zinc oxide has strong ultraviolet absorption capacity, people are increasingly used for coloring paints, inks, varnishes, printing and dyeing agents for printing and dyeing industries, and used in the match industry to neutralize the acidity of kraft rubber and increase adhesion. The effect is used by the pharmaceutical industry as a raw material for adhesive plasters, and also for pigments.

   (5) Zinc oxide is also used in the fields of pressure sensitivity, photocatalysis, photoelectrode, paint, color TV development and the like.

 

Fuel for calcining zinc oxide in rotary kiln

 

    According to its state, it can be divided into: 1, solid fuel, such as coal, coke, etc.; 2, liquid fuel, such as heavy oil, kerosene, diesel, etc.; 3, gaseous fuel, such as liquefied petroleum gas, producer gas, natural gas, etc.

The zinc oxide rotary kiln is a chemical process for modification, purification, decomposition, oxidation and reduction. During the calcination process, the material is statically and dynamically moved in the zinc oxide rotary kiln. The larger the specific surface area of ​​the calcination time, the faster the heat transfer rate and the calcination. The shorter the time, the dynamic calcination of the swirling is to mix the powdery material with the heated hot air and then form the hot and turbulent flow in the same direction. The surface is instantaneously calcined to ensure sufficient heat exchange, decomposition and product quality in the rotary kiln. Process equipment. The zinc oxide rotary kiln is mainly composed of a gas heater, a gas-solid mixer, a rotary kiln body, and a gas-solid separation collector. The pre-calcined material is sent into the zinc oxide rotary kiln by the gas-solid mixer, and is mixed with the air heated by the gas heater to be in a swirling state. After the calcination process is completed in an instant, the gas-solid separator is separated from the outlet of the kiln, and separated. Solids and gases are discharged from the discharge port and the exhaust port, respectively.