will water fluorite powder raw materials into the rotary kiln, adopting the direction of material movement and heat movement in the opposite direction - current heating mode.

use bituminous coal by - a series of raw coal burner burning, in order to make sure no black particles - black smoke, then the combustion gas by tertiary type high temperature purification room dust purification, combustion gas in ash content decreased to 80%, reached in keeping the combustion gas high temperature (1200 ℃ ~) under the premise of combustion gas purification (ash content of 50 mg/standard cubic meters or less), to ensure that the fluorite powder is not contaminated.

fluorite powder dryer conditions of use

1, the coal quality condition:

bituminous coal, low calorific value q p 5500 kcal/kg, volatile a 25% or greater, t2 slag melting point 1250 ℃ or higher, the particle size is less than 40 mm, but the powder must not exceed 30% of the total.

type 2, and the furnace condition:

preheater draught of enough; the hopper as little as possible leakage.