Cheap Block Machine/Interlocking Brick Machine In Sri Lanka/Paving Brick Making Machine South Africa Qt4-25bh

Cheap Block Machine/Interlocking Brick Machine In Sri Lanka/Paving Brick Making Machine South Africa Qt4-25bh

This method has been widely used for many years in the fields of soil science and engineering geology.Although China's brick and tile industry has been using it for many years, it is only for soft and dispersed clay raw materials.For coal gangue, shale, etc., which rely on reducing particle size to obtain plasticity, there is a great deal of deviation in using this method.For example, the plasticity of raw materials such as coal gangue and shale depends on crushing to reduce the particle size to a certain degree, adding water to the particles after decomposing (aging), and it is changeable during processing.If the hard clayey shale or coal gangue rich in illite is ground to a sufficiently fine degree (such as cement fineness),the plasticity index may reach a pretty high level.And formed moisture content and drying shrinkage may be larger than common clay materials, which totally differ from common brick clay.

Cheap Block Machine/Interlocking Brick Machine In Sri Lanka/Paving Brick Making Machine South Africa Qt4-25bh

Soft plastic vacuum extruder is suitable for the raw materials with moisture content higher than 19%;the allowed extrusion pressure is 0.4~1.8 MPa.

Semi hard vacuum extruder is suitable for the raw materials with moisture content between 16%~19%;the allowed extrusion pressure is 1.8~2.5 MPa.

Hard plastic vacuum extruder is suitable for the raw materials with moisture content lower than 16%;the allowed extrusion pressure is 2.5~4.5 MPa.

Cheap Block Machine/Interlocking Brick Machine In Sri Lanka/Paving Brick Making Machine South Africa Qt4-25bh

Split Double stage vacuum extruder is composed of mixing part, extruding part, and vacuum system. The above mixing stage is to add and mix raw material; the lower stage is for conveying, squeezing, extruding; Such extruder takes two motors , or we can say each stage takes one motor, such extruder is called split double stage vacuum extruder.

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