采用普通設備,不僅磨損快,能耗高,而且粒度形狀大多呈片狀和針狀,對進一步深加工產品的質量提高帶來一定困難。?ú?ù?ü?a￡?×??üú?òò??±?úìá?·￠?μíì??ú???·±￡￡????oì?ê??òú??òa?-??à′?′??ò?￡??ú×ê?′′óá??aéμ?yì?D￡?±?è?úéúá?ò?D?·??ú???￡???oí·êˉ?óòμìì?·???μ?ò????￡???oí·êˉμ?úéú?á??aé?oì?￡??óD?ú?′?o§μ??′í·?￠?oì?éúú?Dμ?ê???í·?￠°??o??oí?ò???ò???D???μ??ooí?òêˉò??°oí?oí·êˉò??e??·?μ??o?μ??íaμ?°×í·μèμ??ìo????￡。?Y?à?êy?Y??ê?￡????°à?????′?á?ò??yòú??￡????ò???êè?ò?òú?à??μ??ù?èμY???￡è???????oí·êˉ?ú???ó?￡???ó?′ó??íáμ??￡?oí·êˉ?Dμ?áò?ˉ??òY??ò?t??á??è?′ó???￠??ì?oí??ì??￡í·êˉé???á×?è?·￠éú?e??￡??ò?úóê??±à?ú￡?óùè?oóá÷?ìé??o|?￡°é???oì?ú???￡μ?à?′ó,?oí·êˉúá???????ó,?ìéμ??·??êìaè?ò?í??￡???àíè???è?ò??è?T,?oí·êˉμ?′|àíoíà?ó?￡?ò?é?aoü?à?oì??óòμ·￠???ì?D??áùμ?í???êìa??ò??￡。????óúμ±???-???ü?′D?ê??￡?ú￡??òú?t??ò??±??μ÷oí??êó?ú???ü?′￡?′ù??×ê?′μ?×?o?à?ó?￡?·￠?μíì??-??￡??¨éè?ú??Díé??á￡?±￡?¤éúì??·??￡?￡?Y?Y°??úDμ×°±?óD?T???????μ±?°?oí·êˉμ???ê??ùà?ó??ê?a?ò??μáDμ?′|àí?D????μ???′óí???￡??D·￠′ò?ìμ?′óDíò|ê????é?ú￡?·′?÷ê????é?úò??°?×????é?ú￡??éò????oí·êˉ??DD?ó¤???é?ú￡?à?′ó??à?ó?μ?·??§￡????éó?óú??×??￠·￠μ?￡??-??·??ú?￠?￥·??ú??·?oó?éó?óú???à?￠?ì?yíáéúúμèμè￡??oí·êˉ???é?ú×÷ó???′ó￡?′|àí?oí·êˉà?ó??ê??′?%ò?é?￡????yμ???à???±?·??a±|?￡。?oí·êˉê?ìì?·??ú????ò?￡???o?óD′óá?μ?ó??ˉ???ê￡??oí·êˉμ?′óá???·????y￡????à?·?×ê?′￡?????íáμ?￡???è??·??￡??êóoí?a???oì??óòμ?oí·êˉ×?o?à?ó??êìa￡???±