Zimbabwe Automatic Interlocking Brick And Block Making Machine Wt1-20m

Zimbabwe Automatic Interlocking Brick And Block Making Machine Wt1-20m

 1: Investigate the market and confirm the demand

To determine new plant production scale should refer to the local market conditions.First of all, we shall thoroughly investigate local brick and tile market conditions and grasp following situation:current market demand,actual production volume of existing companies, how big the market gap is,current selling price of brick and tile products and the demand and price trend.Besides,is there the same new brick factory to be built?What is the production scale?After mastering above conditions, the new plant can be determined.

Zimbabwe Automatic Interlocking Brick And Block Making Machine Wt1-20m

The plasticity expressing in China’s brick and tile industry is now proposed by the Swedish A. Aterberg in 1911.Plasticity index is expressed as the range of water content when the clay is in a plastic state,whose value is equal to the difference between flow limit and plastic limit.Flow limit, also known as liquid limit, is water amount that clay enters a flowing state.Plastic limit is water amount that clay can be rolled into 3mm diameter.

Zimbabwe Automatic Interlocking Brick And Block Making Machine Wt1-20m

This is still the result after revalidation according to the geotechnical test method,which fully demonstrates that the current geotechnical test method used in the brick and tile industry can’t correctly reflect the characteristics of raw materials such as coal gangue and shale during processing and forming.In order to further prove the fact that raw materials such as shale or coal gangue relys on reducing the particles size to obtain plasticity, the hard shale in a place near Shijiazhuang was crushed into two groups in the laboratory.One group all can pass 0.9 mm sieve; the other can all pass 0.5 mm sieve.However, the shale of the same mineral composition differs greatly in its plasticity index only due to its different grain sizes, one being 4.8% (0.9 mm) and the other being 8.9% (0.5 mm).In order to further verify this phenomenon, this two groups were blended together in different proportions to determine their plasticity index, drying line shrinkage rate and drying sensitivity index. The results are shown in the following table.

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