Qt4-25 Automatic Concrete Cement Brick Making Machine Production Line

Qt4-25 Automatic Concrete Cement Brick Making Machine Production Line

The plasticity index of common brick clay is relatively stable.In terms of this type of material, which depends on crushing process reducing particle size to obtain plasticity, its plasticity index is variable during processing.For example, when a certain coal gangue is crushed below 0.9 mm in the laboratory, according to geotechnical test method, the plasticity index is measured as only 7.2%.However, after adding 40% of excessively fired vermiculite (essentially no plasticity),then adding water, aging, and crushing on the roller, vacuum extrusion,plasticity index of the small sample actually reached 10.5%.For example, when other shales were crushed to less 0.9 mm, the plasticity index is measured as 8.4% according to geotechnical test method.However, after adding 40% (by weight) of fly ash,then mixing with water, aging, and crushing,plasticity index of the small sample extruded by the vacuum extruder reached 9.5%.

Qt4-25 Automatic Concrete Cement Brick Making Machine Production Line

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.

Qt4-25 Automatic Concrete Cement Brick Making Machine Production Line

some time , we find that if we adopt  Fe-Cr-B wear - resistant electrode to repair auger,we get can 1.8 million green bricks while previously we only got 400,000 green bricks by carbom steel one time

repairing. The auger service life extends 4.5 times. The 2/3 repairing material cost is saved.It is proved by pratice that adopting wear resistant material to repair easy wear parts is an effective way to improve efficiency,extend working life and reduce cost .

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