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سنگ شکن معدن شن و ماسهاستوانه ای که به وسیله یک یا چند استوانه سنگین با سطح صاف یا آجدار صورت می گیرد. حرکت استوانه ای روبرو از خلاف جهت یکدیگر و سرعت چرخشی آنها مساوی یا نزدیک به هم است. فاصله بین استوانه ها قابل تنظیم است و اساس کار این سنگ شکن ها بر مبنای اصطکاک بین سنگ و استوانه ها استوار است. باید توجه داشت که این سنگ شکن ها از نظر تعداد غلطک ...
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