Media Center
HomeMedia CenterZBG Info

Sand Lime Brick/Fly Ash Brick Curing Autoclave

2016-07-08 16:21:58

Building materials like fly ash brick, lime-sand brick need high temperature and pressure curing in autoclave. High temperature and steam curing process is the most important step during lime-sand brick and fly ash brick production, the curing environmental condition and curing time have a great influence on brick quality. ZBG provides the essetial autoclave equipment for your production.

industrial autoclave

The curing principle as follow:

Lime-sand (fly ash) brick is mainly rely on quick lime the effective CaO and sand of SiO2 0.8 Mpa above pressure with steam (174.5 ℃ above), under the condition to go on the thermal synthetic reaction. To create all kinds of silicate gel material, for the most part for hydrated calcium silicate and a small amount of magnesium silicate etc, with aggregate sand firmly cement together, forming a certain structure strength. In the above process after equipment pressure molding for high strength lime-sand (fly ash) brick.
The reaction process:
CaO + H2O - Ca (OH) 2 + 15.5 kilocalorie
Ca (OH) 2 + SiO2 + (n-1) H2O 174.5 ℃ saturated steam
CaO * SiO2 * nH2O (calcium silicate)

Autoclaved Fly ash(lime-sand) brick advantages:

Compared with common cement brick manufacturing process, lime-sand brick and fly ash brick making process is more complex, but it is save material and environmental friendly, can add max ratio fly ash, lime-sand, tail slag etc raw material, to up to low energy consumption, waste re-clcyle, high quality of end bricks, tyde shape, high strength; due to lime-sand (fly ash) brick high volume, the sound insulation performance is special superior. In addition lime-sand (fly ash) brick belongs to no combustible building material. Lime-sand (fly ash) brick can’t bear heat above 200 degree, and quick heat quench and acid or hard building parts for a long time. It is suitable for bearing wall of multilayer composite structure building.

Products Recommended
DHL Corner Tube Biomass Fired Bo
DHL Corner Tube Biomass Fired Bo 10-160 t/7-112 MW
Pressure: ≤5.29MPa
Biomass Power Plant Boiler
Biomass Power Plant Boiler 10 - 75 t/ 7-52.5 MW
Pressure: ≤5.29MPa
Biomass Fired CFB Boiler
Biomass Fired CFB Boiler 20-280 t/ 14-196 MW
Pressure: ≤5.29MPa
DZL Packaged Biomass Steam Boile
DZL Packaged Biomass Steam Boile 2-10 t/1.4-7 MW
Pressure: ≤1.6MPa
Success Stories
3 Tons Gas Fired Boiler Exported
3 Tons Gas Fired Boiler Exported Application: Building materials industry
Capacity: 3 tons
49 Tons Waste Heat Steam Boiler
49 Tons Waste Heat Steam Boiler Application: Chemical industry
Capacity: 49 tons
Indonesia Customer Ordered 2 Set
Indonesia Customer Ordered 2 Set Application: Dry cleaning industry
Capacity: 8 ton
60 Ton CFB Power Plant Boiler Pr
60 Ton CFB Power Plant Boiler Pr Application: Power plant
Capacity: 60 tons
Checking Order Quality Test Before Delivery Check Items When Packing Packaging And Transport
Get An Instant Quotation

For all inquiries, please fill in the form below (* are required) to send us a brief message, and we will get back to you as soon as possible.

* Email:
Boiler fuel:
  • Gas
  • Oil
  • Biomass
  • Coal
  • Waste Heat
  • Other
  • Textile Industry
  • Central Heating
  • Food Plant
  • Power Plant
  • Chemical Industry
  • Waste Heat Recovery
  • AAC Block Plant
  • Hotel & Resort
  • CHP
  • Other