What the steps of manufacturing Fly Ash Bricks?
Mixing Process
During the first step raw material is fed to the batching machine or hopper box and using a conveyor belt it over to the pan, here cement and water are added and mixing is done for five minutes. Inside the pan skipper and roller help in mixing the material efficiently as this is the most important step for fly ash brick making.
Pressing
Now raw material using conveyor belt move to the hopper and there is PLC which controls the amount of raw material fed into press machine and this material fed into a momouldade with high-grade EN31 material and pressed in brick making machine. These machines can run both manually and automatically.
Curing
The brick is kept in the chamber for 24 hours. And then the bricks are kept for 15 to 18 days where the bricks are watered ice a day. Now the fly ash bricks are ready.
There are three ratios used in manufacturing and cost depends on which manufacturing ratio is used. But with any type of mixing ratio used, we have to maintain the quality of the product. This is a business of making a profit by using a suitable mixing ratio at a low cost.
(a) Mix Proportion
Fly Ash – 55 to 60%
Sand (Stone dust) – 20 to 25%
Sludge Lime – 15 to 22%
Gypsum – 5%
(b) Mix Proportion for Fly Ash Brick Manufacturing
Fly Ash – 57 to 65%
River Sand (Stone dust) – 18 to 27%
Hydrated Lime – 9 to 12%
Gypsum – 5%
(C ) Mix Proportion for Manufacturing of Fly Ash using cement instead of gypsum and Lime
Fly Ash – 50 to 60%
River Sand (Stone Dust) – 30 to 40%
Cement – 8 to 12%
