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$(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p>半精致石英砂，即SiO2�?0�?9% Fe2O3�?.06�?.02%，耐火�?750℃，外观部分大颗粒，表面有黄皮包囊。普通石英砂一般是采用天然石英矿石，经破碎，水洗，烘干，二次筛选而成的一种水处理滤料；该滤料具有：无杂质，无校角，密度大，机械强度高，载污能力线使用周期长的特点，是化学水处理的理想材料。粒度范�?�?20目，可按用户要求粒度生产。主要用途：冶金，墨碳化硅，玻璃及石英砂是一种坚硬、耐磨、化学性能稳定的硅酸盐矿物，其主要矿物成分是SiO2 ，石英砂的颜色为乳白色、或无色半透明状，硬度7，性脆无解理，贝壳状断口，油脂光泽，密度为2.65，堆积密度（1-20目为1.6），20-200目为1.5，其化学、热学和机械性能具有明显的异向性，不溶于酸，微溶于KOH溶液，熔�?750℃� � 半精致石英砂常用规格有：0.5-1mm�?-2mm�?-4mm�?-8mm�?-16mm�?6-32mm�?0-20目�?0-40目�?0-80目�?00-120目玻璃制品，搪瓷，铸钢，水过滤，泡花碱，化工，喷吵等行业、�/p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; margin: 10px 0 0; line-height: 26px;"> 暂无数据� </p> </div>  <div class="xgfa"> <div class="xgfa_tit"> <div> <span></span>相关方案 </div> </div> <div class="xgfa_box" style="display: block;"><div style="padding:10px;">暂无相关方案、�/div> </div> </div> <script> $(function(){ // 切换 $(".xgfa_tit_ul li").hover(function(){ $(".xgfa_tit_ul li").css({"color":"#4F5862","border-bottom-color":"transparent"}); 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