Specifications

1.Fully automatic
2.Raw material:Sand/lime/fly ash
3.High production capacity.
4.High strenght block

  2013 New desgin   autoclaved sand lime brick machine

 

1.Dongyue Machinery Group is a company specialized in producing SAND LIME BRICK MAKING MACHINE,AAC BLOCK MACHINE,AAC PANEL MAKING MACHINE,The capacity is between per year.

With technology cooperation with Germany company AAC CONCEPT,Our aac block machine inherits germany technology.So far we have 15 line of AAC block machine in Indonesia,10 lines in india,5 lines in Vietnam,2 lines in Buma,2 lines in Mongolia ,1 line in Kazakhstan ,1 one in Bulgaria

2.Sand lime brick plant introduction

 

Sand Lime Bricks (SLB):   Sand lime bricks are manufactured by mixing sand, fly ash and lime in desired proportion that may be followed by chemical accelerator during wet mixing.

 

This mixture is moulded under pressure.  The green bricks can be air cured for 24-48 hours and then steam cured in autoclave at desired pressure and temperature.

 

The green bricks may be steam / hot water cured at atmospheric pressure also.  In presence of moisture, fly ash reacts with lime at ordinary temperature and forms a compound possessing cementitious properties.

After reactions between lime and fly ash, calcium silicate hydrates are produced which are responsible for the high strength of the compound. Bricks made by mixing lime and fly ash are,

 

therefore, chemically bonded bricks.

 

3.Sand lime brick advantages

 

These bricks are suitable for use in masonry just like common burnt clay bricks.

 

These bricks have the following advantages over the clay bricks:

 

1. Possess adequate crushing strength as a load-bearing member.

 

2. Have cement colour in appearance, are uniform in shape and smooth in finish and require no plastering for building work.

 

4.Sand lime brick machine working process

 

1.Raw materials sand,lime,fly ash are  loaded into three bin batching machine.If lime is in stone shape,it will be crushed into powder and stocked in lime silo.Three raw materials will be dosed and mixed in the bin under the batching machine.

 

2.The dosed material will be transported into mixer through belt conveyor.

 

3.After mixing,the mixed raw material will be stocked in silo for digestion thorugh bucket elevator.it will last around 2hrs

 

4.The digested raw material will come into wheel mill and be grinded into powder.

 

5.The powder material will come into host machine mould area,be pressed into block shape.The common block shape is 240mm × 115mm × 53mm , : 240mm × 115mm × 90mm (or 115mm ) 240mm × 1 90 mm × 90 mm (or115mm )

 

6.The automatic stacker will stack the block and transport to the steam trolley.

 

7.The block will be steamed 8hrs in autoclave.After that,the whole production line is finished

 

 

5Sand lime brick plant raw material requests

 

Item	LIME Grade
	superior product	top-quality product	quality products
A(CaO+MgO)mass fraction,%  ≥	90	75	65
MgO mass fraction,% ≤	2	5	8
SiO2 mass fraction,% ≤	2	5	8
CO2 mass fraction,% ≤	2	5	7
digestion rate,min  ≤	15
digestion rate, °C  ≥	60

 

 

Item	Sand Grade
	High-class product	First-grade product	qualified product
SiO2  Quality Score,%       ≥	85	75	65
K2O+NaO Quality Score,%    ≤	1.5	3.0	5.0
organics	Passed
Mica Quality Score,%        ≤	0.5		1.0
Sulfide and sulfate(accounted with SO3)Quality Score,%              ≤	1.0		2.0
Mud Quality Score,%          ≤	3.0	5.0	8.0
water ratio,%              ≤	8
impurity(bark,grass root, ect.)	None

6.Sand lime brick plant picture overview

Sand lime brick making machine 3D plant picture

Raw material batching machine

Raw material mixing machine

Sand lime forming host machine

Block coming into autolcave for curing