Zinc oxide rotary kiln price in China

Zinc oxide is an inorganic compound with the formula ZnO. ZnO is a white powder that is insoluble in water, and it is widely used as an additive in numerous materials and products including rubbers, plastics, ceramics, glass, cement, lubricants,[5] paints, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants, and first-aid tapes. It occurs naturally as the mineral zincite, but most zinc oxide is produced synthetically

Zinc oxide rotary kiln working process:

1.Raw material preparation, batching, blending and feeding process
The raw material , such as EAF dust and coal is transported into stock yard.

There are two receiving hoppers, the materials are feeding into receiving hopper by loader. At the bottom of hopper, there are constant weight feeder to supply each materials quantitatively, after mixing by mixer and then are send into kiln end by belt conveyor to blend the materials together.

2.Oxidation-reduction process in kiln

The blended materials are feeding into rotary kiln by belt conveyor, because there is coal added in the blended materials, when the materials are moving to the kiln end, the coal is burning and creating heat, so the material temperature is getting higher and higher.
At the temperature of 1150+/50 degree celsius, with help of coal as reducing agent, the valuable metal such as Zn will be reduced and volatilized as metal vapor int the dust collecting system.

3.ZnO powder recovery system

The fume from kiln end will firstly enter into settling chamber and then enter into surface cooler for cooling to 300 degree celsius under and then enter into bag type dust collector, then exhaust into air.

The dust collected in surface cooler and bag type dust collector are final ZnO powder products.

The quality of coarse materials from settling chamber and the former part of surface cooler are not meeting requirement, these materials will be sent back to the feeding hopper at the kiln end for re-calcination.

4.Finished products storage and package

At the bottom of the bag type dust collector, there are screw conveyor to collect and send the final products via bucket elevator into intermediate silo.
At the bottom of silo, there is fixed type packing machine for packaging.

5.Kiln slag treatment

At the kiln head, there is water cooling pool. The kiln slag is directly discharged into water pool for cooling, and then is transported by loader to the stock yard for sale or for further process. The cooling water is entering to water recycling system.

The kiln slag is transported into pit hopper by loader .The crushed slag is entering into ball mill for grinding and then entering into two stage magnetic separators for separation , of which, one is for roughing, the other is for cleaning, then get final Fe concentrate.

The waste water will be recycled after sediment, there is no waste water discharging in this process and no harm to environment protection.

The waste after magnetic separation can be used for construction materials. It is no harm to environment.

 Shipping of zinc oxide rotary kiln:

Installation and guidance:When the machine arrives at your company, we will dispatch our technicians to your company to guide the installation and commissioning at site. User should pay for the following fees air tickets, boarding and lodging and traffic in client’s factory. Allowance is about 70USD per day.

Technical training:We provide free technical training service to your stuff. Training content contains the main work principle of machine, operating regulations, maintenance methods and steps, safety, etc.

Warranty: one year (not include man-made damaged).

Derui machinery Co.,Ltd is located in Zhengzhou,Henan province, China(Mainland).Our main product include following:

Rotary kiln equipment: cement rotary kiln, lime rotary kiln, bauxite rotary kiln, zinc oxide rotary kiln, etc.

Dryer equipment: Rotary dryer, silica sand rotary dryer, sawdust dryer, mineral rotary dryer, slag rotary dryer, coal dryer, fly ash dryer, etc.

Stone crusher series: jaw crusher, impact crusher, cone crusher, hammer crusher, roller crusher etc.

Beneficiation equipment series : gold flotation machine, spiral classifier, rotary dryer, etc.

Grinding mill series: ball mill, raymond mill, rod ball mill, overflow ball mill, etc.

Feeding and screening equipment series: vibrating screen, vibrating feeder, etc.

Accessory equipment: belt conveyor, bucket elevator, screw conveyor, coal powder spraying machine, etc.