The productive technology of limesand brick include several main process such as raw materials preparation,mixture preparation,air brick moulding, Autoclaved maintenance .
1. Raw materials preparation
Sand and lime are the main raw materials to produce limesand brick.The sand can use river sand,sea sand,aeolian sand, deposit sand and tailings sand of dressing plant.We can use different methods to mine according to the different kinds of sand and characteristics of mine.The production of lime mainly adopts the method of calcination.
2. Mixture preparation
Before produce the mixture,we should design the mix proportion.Designing the mix proportion should consider to make the air brick has enough strength and make the products reach the certain performance decided in advance,sush as strength,durability,freezing resistance and stability in the erode medium.It is not right to say that the higher strength the better,because the higher the strength is ,the more lime will be used and the better the sand grading,this means the more cost.So,mix design actually is to find the optimized critical between technology and economy.When we design the mix proportion,we should consider these initial condition:performance of raw materials(mineral and grain composition of sand,chemical composition of lime,active calcium oxide content in the lime,hydratation speed and temperature and so on),quality requirements and suppress to the products,conserve condition.The preparation of mixture include many processes such as digestion of lime,measure and stir of mixture,digest of mixture,dispose of digestive mixture.
3. air brick moulding
Moulding is one of the most important steps in the process of producting limesand brick, it including four working procedure: feeding, pressure, cake out, take cake and board. Charging is to put loose particles mixture forcibly in prescribed size and plane shapes of pressure brick making hole.
Pressure is to give pressure on the mixture in model hole, force is applied to a cake’s surface or two opposite surface,at this moment, the four side is foced by formwork,the up and down is forced by stamping dies,so all the sides is under pressure.Cake out is pull out the cake. Take cake is to take it out from the model and board on hardening car. In the four processes, the first three can be done by bricking making machine, but cake out, take cake and board can be artificially operation, i.e., also can use machinery to complete.
Now the brick making machine inland has the defect of low pressure compared with the foreign products.Only when the pressure is sufficient,the strength of limesand brick can be ensured,oridinary the pressure is over 8Bar,and best is 10Bar.The suppress time also has influence on the strength of air brick.If the suppress time is too short, the strength of air brick will be too low,but if the suppress time is too long,there is no meaning.
This series of crushers can be used for middle and fine crush of various ores and rocks under high and middle hardnes in many industrid departments such as mineral separation,chemical industry,cement,fireproofing materials,grinding materials,building materials,especially in the building material industry used to produce peastone and mung bean sand,has better effect than normal crush machine.
YMZ200-8E disc rotation brick making machine is used to suppress standard building load-bearing brick whose main raw materials are river sand,flyash,slag,tailing sand,gangue and many other industried waste residue,it can also be used to suppress cement brick,fireproofing brick and baking-free brick.Using this equipment,we can turn the waste to treasure,save energy and reduce the consumption,protect the land,it has obvious economic benefits and social benefits.
Automatic discharging wheel mill
Successive slaking tank
Slaking tank has an important position in all kinds of autoclaved brick products,its operation concerns the successive dispel of mixture.It is also directly related to quality,output and rate of finished products. The equipment has the advantages of high-capacity,fee from the top and discharge from the down,successive dispel. Automatic mechanical power gear scraper next makings, overcome the domestic generally use vibration-type next makings, disk of material easy tent storehouse shortcomings. For anufacturers inland in north winter not normal to negate production of...