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<title><![CDATA[yuwenhua'职业博客]]></title>
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<modified>2009-02-14T11-31-29 CST</modified>
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<entry>
<title></title>
<link rel="alternate" type="text/html" href="http://www.bokee.net/blogmodule/weblogcomment_viewEntry/2608497.html"/>
<issued>2009-02-13T21-57-50 CST</issued> 
<created>2009-02-13T21-57-50 CST</created>
<modified>2009-02-13T21-57-50Z</modified>
<id>tag:yuwenhua.blogchina.com,2005://2608497</id>
<author>
<name>yuwenhua</name>
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<dc:subject>Default Cloumn</dc:subject>
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<entry>
<title>石英砂</title>
<link rel="alternate" type="text/html" href="http://www.bokee.net/blogmodule/weblogcomment_viewEntry/2608480.html"/>
<issued>2009-02-13T21-55-41 CST</issued> 
<created>2009-02-13T21-55-41 CST</created>
<modified>2009-02-13T21-55-34Z</modified>
<id>tag:yuwenhua.blogchina.com,2005://2608480</id>
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<name>yuwenhua</name>
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<dc:subject>Default Cloumn</dc:subject>
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<![CDATA[<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><strong><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">石英砂</span></strong><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">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</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: black"><font face="Times New Roman">SiO2 </font></span><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，石英砂的颜色为乳白色或无色半透明状，硬度</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: black"><font face="Times New Roman">7</font></span><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，性脆无解理，贝壳状断口，油脂光泽，相对密度为</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: black"><font face="Times New Roman">2.65</font></span><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，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</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: black"><font face="Times New Roman">KOH</font></span><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">溶液，熔点</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: black"><font face="Times New Roman">1750</font></span><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体">℃</span><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。颜色呈乳白色、淡黄、褐色及灰色，石英有较高的耐火性能。</span><span class="style41"><span style="COLOR: windowtext; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><font size="3">广泛用于电子、光学玻璃、治金砂轮、精密铸造、耐磨辅助材料、工频、中频感应电炉及其它炉衬、涂料、喷砂、除锈滤水，化工科学研究及国防工业等领域。</font></span></span><span lang="EN-US" style="FONT-SIZE: 7pt"><o:p></o:p></span></p>]]>
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