I. Kev ua haujlwm ntawm Green Sand Moulding Tshuab Raw Khoom Ua Haujlwm Cov xuab zeb tshiab yuav tsum tau kho kom qhuav (qhib noo tswj hauv qab 2%) Siv cov xuab zeb xav tau crushing, sib nqus sib cais, thiab txias (txog li 25 ° C) Cov khoom siv pob zeb nyuaj dua, feem ntau pib crushed siv lub puab tsaig crushers los yog c ...