3 Shifts / Day 600kg/M3 AAC Brick Making Machine

plant type :tilt cake system
product range-actual
-blocks :100%(optionally profiled)
dry density range : 500 - 600 kg/m3

Mould type
gross size :4120×1260×670
net size cake : 4000×1200×600
net cake volume :2.88 m³

Production data
-shifts/day :3shifts/day(7.5hours effective per shift)
-Cakes/day :122
-Production rate (cycle time) :5.5min/cake
Theoretical capacity :350 m^³/day
Basic assumptions
-working days/year :300
-rising time :2hours
-autoclaving cycle : 12 hours (incl. loading/unloading)

Remarks:
The above mentioned theoretical capacity does not include possible production waste, broken material, reduction in net volume, etc.
This capacity is calculated on the basis that above mentioned rising and autoclaving times can be met and is considered at a 100% mould utilisation. These times are very depending on the quality of the raw materials and other conditions which are under the responsibility of the Purchaser. These times might also extend in case of increased future reinforced element production.

1. product range and pack sizes
   1. range -blocks

The following products to be manufactured and packed on wooden pallet (pallet type wooden pallet of 1200 x 1200 mm) according following table:

1. Dimensional accuracy

Accuracy of cutting:
- length of the block : ± d2 mm (repetitive)
- height of the block : ± d1,0 mm (repetitive)
- thickness of the block : ± d1,0 mm (repetitive)


5. Indication general labour force plan
An indication of man power required to operate the plant is shown in the labour force plan below:

Standard raw material specification and consumption values
1. Requirements for raw materials
The following raw material specifications are standard values as used in several aerated concrete plants.
1.1 Quartz Sand

1.2 Ground quick lime

CaO values below 92% by weight increase the lime consumption correspondingly.
Typical reactivity:

(Test conditions: 600 ccm distilled water at 20°C ± 0.5°C and 150 g ± 0.1 g of unslaked lime).

1.3 Portland Cement 45 N/ mm²

1.4 Ground, natural anhydrite
CaSO4 min. 80 % by weigh
t 98 % passing through 150 µ sieve
Gypsum or synthetic anhydrite may be used as an alternative; properties have to be established by appropriate tests.
1.6 Aluminium powder
Metal content 90 - 95 %
Max. oversize with 45 µ 20 - 50 %
Average grain size 20 - 45 mµ
Specific surface area acc. to Blaine Fatty acids 10,000 - 20,000 cm^²/g max. 1.5 %

1.7 Water
Potable water without any components that are detrimental to concrete. In order to obtain the right mix temperature the water shall be supplied from a cold as well as a hot water source.
1.8 Assumed temperature of raw materials

2. Consumption values
According to our experience following consumption values may be used as indicative values. The specific raw material consumption will depend on the quality of the raw materials and the desired dry density and compressive strength of the finished product.For various dry density classes from 500 to 600 kg/m^³ and average raw material quality, following typical consumption values may serve as a guideline for the production of 1 m3 AAC blocks:

For the production of AAC panels additives (e.g. MgO) are needed to adjust the shrinkage of the AAC relative to the steel reinforcement . Further it is not advisable to produce AAC panels using flyash.