Autoclaved Aerated Concrete Block Production Line
1.Production technology of Autoclaved Concrete Block Machine
1) Raw materials handling
Fly ash (or sand, rock powder) is transported into the ball mill through feeder and belt conveyor driven by electromagnetic vibrating feeder. After milled, it is sent to the pulp tanks for storage with fly ash pump
1.Production technology of Autoclaved Concrete Block Machine
1) Raw materials handling
Fly ash (or sand, rock powder) is transported into the ball mill through feeder and belt conveyor driven by electromagnetic vibrating feeder. After milled, it is sent to the pulp tanks for storage with fly ash pump
The lime is carried into the jaw crusher for crushing through feeder and belt conveyor driven by electromagnetic vibrating feeder., after crushed, it will hoisted to the lime storage bin with bucket elevator, and then sent to ball mill through screw conveyor, and the milled materials will be put into the batch bin through screw conveyor and bucket elevator.
Chemicals are made into a certain concentration of solution according to a certain proportion after the artificial measurement, and sent into the storage tanks for storing
Chemicals are made into a certain concentration of solution according to a certain proportion after the artificial measurement, and sent into the storage tanks for storing
2) Raw material storage and feeding of Autoclaved Aerated Concrete (AAC)block
Raw materials are transported into the factory in the automobiles, fly ash (or sand, rock powder) is concentrated in raw material field, when using, packed and shipped to the hopper .Bagged cement or bulk cement is stored in cement silo, when using, packed and shipped to the hopper. Chemicals and aluminium powders are stored in chemical warehouse and aluminum warehouse, when using, respectively shipped to production workshop
3) batching, mixing, pouring
The lime, cement is transported to automatic quantitive scale for cummulative metering in turn by the screw conveyor under the batch bin. The screw conveyor can add materials uniformly into the pouring mixer.
Fly ash (or sand, rock flour) and waste pulp are put into measuring cylinder for measuring, when all kinds of materials are measured, and the mould already in place, then begin to mix the slurry, before pouring it should reach process requirements (about 40℃), if not enough temperature, make the steam heating in measuring tank. The materials are added into the aluminum suspension 0.5 ~ 1 minute before pouring.
The lime, cement is transported to automatic quantitive scale for cummulative metering in turn by the screw conveyor under the batch bin. The screw conveyor can add materials uniformly into the pouring mixer.
Fly ash (or sand, rock flour) and waste pulp are put into measuring cylinder for measuring, when all kinds of materials are measured, and the mould already in place, then begin to mix the slurry, before pouring it should reach process requirements (about 40℃), if not enough temperature, make the steam heating in measuring tank. The materials are added into the aluminum suspension 0.5 ~ 1 minute before pouring.
4) primary curing and cutting
After pouring, the mould is pushed into the curing room for initial setting with the conveying chain, room temperature 50～70℃, curing time 1．5-2 hours(According to the geographical advantages, the process can be avoided).After primary curing, hang the mould frame and body together on the cutting table placed with kettle floor in advance by negative pressure sling, pull off the frame, and the cutting machine makes the crosscutting and lengthcutting of the body. The frame is hoisted to the mould carriage for artificial cleaning and oil removing, and then group the mould for the next pouring. The cut body along with the kettle floor is hoisted to kettle car and put into two layers with the crown wheel, between which there are four supports, and several kettles is made up into 1 group.
After pouring, the mould is pushed into the curing room for initial setting with the conveying chain, room temperature 50～70℃, curing time 1．5-2 hours(According to the geographical advantages, the process can be avoided).After primary curing, hang the mould frame and body together on the cutting table placed with kettle floor in advance by negative pressure sling, pull off the frame, and the cutting machine makes the crosscutting and lengthcutting of the body. The frame is hoisted to the mould carriage for artificial cleaning and oil removing, and then group the mould for the next pouring. The cut body along with the kettle floor is hoisted to kettle car and put into two layers with the crown wheel, between which there are four supports, and several kettles is made up into 1 group.
The waste materials generated from cutting are shipped to the slurry mixer beside the cutting machine through the screw conveyor, and made into waste slurry, by adding water, for the use of matching materials.
5) Autoclaved and finished product
After the body finishes the grouping on the stop line before the kettle, open the autoclave door, firstly pull out the finished kettle car with the hoist, and then pull the kettle car to be autoclaved into the autoclaved kettle for curing with the hoist. The finished products on the kettle car are hoisted to the finished-products storage with overhead crane, and then shipped to finished-products storage yard with the forklift. The empty kettle car and the kettle floor are hoisted back to the turn-around, after cleaned, pulled back to the parking yard with the hoist for the next use.
After the body finishes the grouping on the stop line before the kettle, open the autoclave door, firstly pull out the finished kettle car with the hoist, and then pull the kettle car to be autoclaved into the autoclaved kettle for curing with the hoist. The finished products on the kettle car are hoisted to the finished-products storage with overhead crane, and then shipped to finished-products storage yard with the forklift. The empty kettle car and the kettle floor are hoisted back to the turn-around, after cleaned, pulled back to the parking yard with the hoist for the next use.
2.Features of Autoclaved Aerated Concrete (AAC)
The aerated concrete is characterized by the advantages of light weight, high heat preservation, good sound isolation, high strength, processable property and so on, what’s more, the raw materials of AAC are abundant. Especially, adopting fly ash as the raw material of AAC block and board it can not only make use of industrial waste residue, improve environmental pollution, and protect tillable field, but also create favorable social and economic benefits.
Aerated concrete is the perfect wall material to replace the traditional solid clay brick.. Autoclaved Aerated Concrete (AAC) products have become the important component of new-type building materials, and possess wide market development prospects.
The aerated concrete is characterized by the advantages of light weight, high heat preservation, good sound isolation, high strength, processable property and so on, what’s more, the raw materials of AAC are abundant. Especially, adopting fly ash as the raw material of AAC block and board it can not only make use of industrial waste residue, improve environmental pollution, and protect tillable field, but also create favorable social and economic benefits.
Aerated concrete is the perfect wall material to replace the traditional solid clay brick.. Autoclaved Aerated Concrete (AAC) products have become the important component of new-type building materials, and possess wide market development prospects.