Quick lime calcination kiln active lime production plant limestone rotary kiln
Introduction
Rotary Kiln belongs to building material equipment, according to different materials, which can be divided into cement kiln, metallurgy chemical kiln and lime kiln. Cement kiln is used for making cement clinker and there are dry and wet methods to make cement clinker. Metallurgy chemical kiln is widely used for magnetic roasting of poor iron ore and oxidizing roasting of chrome and nickel in the steel factory; backing high-alumina mine in the refractory material factory; baking chamotte and alumina in the aluminum factory and baking chrome ore and chrome powder in the chemical plant. The Lime Kiln is used for roasting active lime in steel works and ferroalloy plants and light roasting dolomite.
Working Principle
The main part of the ebullience calciner is composed of small-diameter cooling coil pipes. The
heat transfer oil is piped into coil pipe and releases the heat into the furnace after exchanging
heat. Roots blower is equipped at the bottom of the ebullience calciner, which can blow the cold air into the furnace, making the powder boiling in the furnace. And at certain temperature, the
powder, which has been dried, becomes light that it can flow to the outlet automatically. The
quality of the gypsum powder produced in this way is better and the content of crystallization
water is high, and easy to control the time of solidification. In addition, the machine is equipped with dry electrostatic precipitator, and the dust removal efficiency reaches over 95%, eliminating the dust pollution.
technical parameter
Capacity (tpd) | 150 | 200 | 225 | 250 | 300 | 400 | 500 | 600 | 800 |
Rotary kiln (m) | 2.5×40 | 2.8x43 | 3x50 | 3.2x50 | 3.3x55 | 3.6x55 | 3.8x55 | 4x60 | 4.3x60 |
Slope
(%) | 3.5 | 3.5 | 3.5 | 3.5 | 3 | 3 | 3 | 3 | 3 |
Calcination temp.
(°C) | 1300 | 1300 | 1300 | 1350 | 1350 | 1350 | 1350 | 1350 | 1350 |
Fuel
( coal) | Gas/ Powder
| Gas/ Powder
| Gas/ Powder
| Gas/ Powder
| Gas/ Powder
| Gas/ Powder
| Gas/ Powder
| Gas/ Powder
| Gas/ Powder
|
Fuel consumption
( kJ/kg) | 6670 | 5500 | 5400 | 5400 | 5400 | 5300 | 5250 | 5200 | 5000 |
Preheating equipment
| Square
| Square
| Square
| Square
| Polygonal
| Polygonal
| Polygonal
| Polygonal
| |
Cooling equipment
| Vertical cooling
| Vertical cooling
| Vertical cooling
| Vertical cooling
| Vertical cooling
| Vertical cooling
| Vertical cooling
| Vertical cooling
|